[proj4js] 01/02: Imported Upstream version 2.3.3
Bas Couwenberg
sebastic at xs4all.nl
Sun Dec 28 22:02:45 UTC 2014
This is an automated email from the git hooks/post-receive script.
sebastic-guest pushed a commit to branch master
in repository proj4js.
commit a008cd4e1c90c1bf6784cd10365143fda2e4a6bb
Author: Bas Couwenberg <sebastic at xs4all.nl>
Date: Sun Dec 28 22:47:25 2014 +0100
Imported Upstream version 2.3.3
---
.gitignore | 7 +
.jshintrc | 11 +
.npmignore | 4 +
.travis.yml | 4 +
AUTHORS | 25 +
Gruntfile.js | 110 +
LICENSE.md | 29 +
PUBLISHING.md | 17 +
README.md | 153 ++
REFERENCES.md | 29 +
bower.json | 24 +
changelog.md | 21 +
component.json | 17 +
dist/proj4-src.js | 5458 ++++++++++++++++++++++++++++++++++++++++
dist/proj4.js | 3 +
lib/Point.js | 35 +
lib/Proj.js | 33 +
lib/adjust_axis.js | 51 +
lib/common/acosh.js | 3 +
lib/common/adjust_lat.js | 6 +
lib/common/adjust_lon.js | 11 +
lib/common/asinh.js | 4 +
lib/common/asinz.js | 6 +
lib/common/atanh.js | 3 +
lib/common/cosh.js | 5 +
lib/common/e0fn.js | 3 +
lib/common/e1fn.js | 3 +
lib/common/e2fn.js | 3 +
lib/common/e3fn.js | 3 +
lib/common/fL.js | 5 +
lib/common/gN.js | 4 +
lib/common/imlfn.js | 16 +
lib/common/inverseNadCvt.js | 30 +
lib/common/invlatiso.js | 13 +
lib/common/iqsfnz.js | 32 +
lib/common/latiso.js | 16 +
lib/common/mlfn.js | 3 +
lib/common/msfnz.js | 4 +
lib/common/nadInterBreakout.js | 26 +
lib/common/nad_cvt.js | 31 +
lib/common/nad_intr.js | 67 +
lib/common/phi2z.js | 16 +
lib/common/pj_enfn.js | 24 +
lib/common/pj_inv_mlfn.js | 20 +
lib/common/pj_mlfn.js | 5 +
lib/common/qsfnz.js | 10 +
lib/common/sign.js | 3 +
lib/common/sinh.js | 5 +
lib/common/srat.js | 3 +
lib/common/tanh.js | 5 +
lib/common/toPoint.js | 13 +
lib/common/tsfnz.js | 8 +
lib/constants/Datum.js | 80 +
lib/constants/Ellipsoid.js | 215 ++
lib/constants/PrimeMeridian.js | 13 +
lib/constants/grids.js | 23 +
lib/core.js | 64 +
lib/datum.js | 404 +++
lib/datum_transform.js | 99 +
lib/defs.js | 55 +
lib/deriveConstants.js | 56 +
lib/extend.js | 14 +
lib/global.js | 11 +
lib/includedProjections.js | 29 +
lib/index.js | 12 +
lib/parseCode.js | 36 +
lib/projString.js | 125 +
lib/projections.js | 34 +
lib/projections/aea.js | 121 +
lib/projections/aeqd.js | 197 ++
lib/projections/cass.js | 103 +
lib/projections/cea.js | 63 +
lib/projections/eqc.js | 41 +
lib/projections/eqdc.js | 110 +
lib/projections/equi.js | 44 +
lib/projections/gauss.js | 45 +
lib/projections/gnom.js | 99 +
lib/projections/gstmerc.js | 56 +
lib/projections/krovak.js | 98 +
lib/projections/laea.js | 288 +++
lib/projections/lcc.js | 135 +
lib/projections/longlat.js | 10 +
lib/projections/merc.js | 97 +
lib/projections/mill.js | 45 +
lib/projections/moll.js | 77 +
lib/projections/nzmg.js | 219 ++
lib/projections/omerc.js | 168 ++
lib/projections/ortho.js | 86 +
lib/projections/poly.js | 128 +
lib/projections/sinu.js | 106 +
lib/projections/somerc.js | 80 +
lib/projections/stere.js | 166 ++
lib/projections/sterea.js | 57 +
lib/projections/tmerc.js | 135 +
lib/projections/utm.js | 18 +
lib/projections/vandg.js | 120 +
lib/transform.js | 72 +
lib/wkt.js | 213 ++
package.json | 46 +
publish.sh | 22 +
test/amd.html | 63 +
test/opt.html | 25 +
test/package.json.js | 1 +
test/test.js | 242 ++
test/testData.js | 306 +++
105 files changed, 11612 insertions(+)
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..312583b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+*~
+node_modules
+.c9revisions
+coverage
+projs.js
+.DS_STORE
+dist
\ No newline at end of file
diff --git a/.jshintrc b/.jshintrc
new file mode 100644
index 0000000..c076384
--- /dev/null
+++ b/.jshintrc
@@ -0,0 +1,11 @@
+{
+ "curly": true,
+ "eqeqeq": true,
+ "latedef": "nofunc",
+ "undef": true,
+ "unused": true,
+ "trailing": true,
+ "indent": 2,
+ "browser": true,
+ "node": true
+}
\ No newline at end of file
diff --git a/.npmignore b/.npmignore
new file mode 100644
index 0000000..f8c19ef
--- /dev/null
+++ b/.npmignore
@@ -0,0 +1,4 @@
+*~
+.c9revisions
+coverage
+projs.js
\ No newline at end of file
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..f714fc0
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,4 @@
+language: node_js
+
+node_js:
+ - "0.10"
\ No newline at end of file
diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..1d39107
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,25 @@
+Mike Adair <madair at dmsolutions.ca>
+Richard Greenwood <rich at greenwoodmap.com>
+Calvin Metcalf <calvin.metcalf at gmail.com>
+Richard Marsden (http://www.winwaed.com)
+#credit for
+#src/projCode/gnom.js
+#src/projCode/cea.js
+T. Mittan
+#credit for
+#src/projCode/eqdc.js
+#src/projCode/equi.js
+#src/projCode/merc.js
+#src/projCode/mill.js
+#src/projCode/omerc.js
+#src/projCode/ortho.js
+#src/projCode/poly.js
+#src/projCode/poly.js
+D. Steinwand
+#credit for
+#src/projCode/merc.js
+#src/projCode/laea.js
+#src/projCode/moll.js
+S. Nelson
+#credit for
+#src/projCode/moll.js
\ No newline at end of file
diff --git a/Gruntfile.js b/Gruntfile.js
new file mode 100644
index 0000000..00e7466
--- /dev/null
+++ b/Gruntfile.js
@@ -0,0 +1,110 @@
+var projs = [
+ 'tmerc',
+ 'utm',
+ 'sterea',
+ 'stere',
+ 'somerc',
+ 'omerc',
+ 'lcc',
+ 'krovak',
+ 'cass',
+ 'laea',
+ 'aea',
+ 'gnom',
+ 'cea',
+ 'eqc',
+ 'poly',
+ 'nzmg',
+ 'mill',
+ 'sinu',
+ 'moll',
+ 'eqdc',
+ 'vandg',
+ 'aeqd'
+];
+module.exports = function(grunt) {
+ grunt.initConfig({
+ pkg: grunt.file.readJSON('package.json'),
+ connect: {
+ server: {
+ options: {
+ port: process.env.PORT || 8080,
+ base: '.'
+ }
+ }
+ },
+ mocha_phantomjs: {
+ all: {
+ options: {
+ reporter: "dot",
+ urls: [ //my ide requries process.env.IP and PORT
+ "http://" + (process.env.IP || "127.0.0.1") + ":" + (process.env.PORT || "8080") + "/test/amd.html",
+ "http://" + (process.env.IP || "127.0.0.1") + ":" + (process.env.PORT || "8080") + "/test/opt.html"
+ ]
+ }
+ }
+ },
+ jshint: {
+ options: {
+ jshintrc: "./.jshintrc"
+ },
+ all: ['./lib/*.js', './lib/*/*.js']
+ },
+ browserify: {
+ all: {
+ files: {
+ 'dist/proj4-src.js': ['lib/index.js'],
+ },
+ options: {
+ standalone: 'proj4',
+ alias: [
+ './projs:./includedProjections'
+ ]
+ }
+ }
+ },
+ uglify: {
+ options: {
+ report: 'gzip',
+ mangle:{
+ except: ['proj4','Projection','Point']
+ },
+ },
+ all: {
+ src: 'dist/proj4-src.js',
+ dest: 'dist/proj4.js'
+ }
+ }
+ });
+ grunt.loadNpmTasks('grunt-browserify');
+ grunt.loadNpmTasks('grunt-contrib-uglify');
+ grunt.loadNpmTasks('grunt-contrib-jshint');
+ grunt.loadNpmTasks('grunt-contrib-connect');
+ grunt.loadNpmTasks('grunt-mocha-phantomjs');
+ grunt.registerTask('custom',function(){
+ grunt.task.run('browserify', 'uglify');
+ var projections = this.args;
+ if(projections[0]==='default'){
+ grunt.file.write('./projs.js','module.exports = function(){}');
+ return;
+ }
+ if(projections[0]==='all'){
+ projections = projs;
+ }
+ grunt.file.write('./projs.js',[
+ "var projs = [",
+ " require('./lib/projections/"+projections.join("'),\n\trequire('./lib/projections/")+"')",
+ "];",
+ "module.exports = function(proj4){",
+ " projs.forEach(function(proj){",
+ " proj4.Proj.projections.add(proj);",
+ " });",
+ "}"
+ ].join("\n"));
+ });
+ grunt.registerTask('build',function(){
+ var args = this.args.length?this.args[0].split(','):['default'];
+ grunt.task.run('jshint', 'custom:'+args.join(':'));
+ });
+ grunt.registerTask('default', ['build:all', 'connect','mocha_phantomjs']);
+};
diff --git a/LICENSE.md b/LICENSE.md
new file mode 100644
index 0000000..b692416
--- /dev/null
+++ b/LICENSE.md
@@ -0,0 +1,29 @@
+##Proj4js -- Javascript reprojection library.
+
+Authors:
+- Mike Adair madairATdmsolutions.ca
+- Richard Greenwood richATgreenwoodmap.com
+- Didier Richard didier.richardATign.fr
+- Stephen Irons stephen.ironsATclear.net.nz
+- Olivier Terral oterralATgmail.com
+- Calvin Metcalf cmetcalfATappgeo.com
+
+Copyright (c) 2014, Mike Adair, Richard Greenwood, Didier Richard, Stephen Irons, Olivier Terral and Calvin Metcalf
+
+ Permission is hereby granted, free of charge, to any person obtaining a
+ copy of this software and associated documentation files (the "Software"),
+ to deal in the Software without restriction, including without limitation
+ the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ and/or sell copies of the Software, and to permit persons to whom the
+ Software is furnished to do so, subject to the following conditions:
+
+ The above copyright notice and this permission notice shall be included
+ in all copies or substantial portions of the Software.
+
+ _THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ DEALINGS IN THE SOFTWARE._
\ No newline at end of file
diff --git a/PUBLISHING.md b/PUBLISHING.md
new file mode 100644
index 0000000..b311173
--- /dev/null
+++ b/PUBLISHING.md
@@ -0,0 +1,17 @@
+Publishing
+===
+
+Use `tin` to update the version number in the `package.json`, `component.json` & `bower.json`.
+
+ tin -v x.y.z
+
+Then run the publish script
+
+ ./publish.sh
+
+afterwards don't forget to update the versions to be a prerelease of the next version, so if you just published 1.1.1 then:
+
+ tin -v 1.1.2-alpha
+ git add package.json component.json bower.json
+ git commit -m 'update version to 1.1.2-alpha'
+ git push origin master
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..d487ad4
--- /dev/null
+++ b/README.md
@@ -0,0 +1,153 @@
+#PROJ4JS [](https://travis-ci.org/proj4js/proj4js)
+
+Proj4js is a JavaScript library to transform point coordinates from one coordinate system to another, including datum transformations.
+Originally a port of [PROJ.4](http://trac.osgeo.org/proj/) and [GCTCP C](http://edcftp.cr.usgs.gov/pub//software/gctpc) it is
+a part of the [MetaCRS](http://wiki.osgeo.org/wiki/MetaCRS) group of projects.
+
+##Installing
+
+Depending on your preferences
+
+```bash
+npm install proj4
+bower install proj4
+jam install proj4
+component install proj4js/proj4js
+```
+
+or just manually grab the file `proj4.js` from the [latest release](https://github.com/proj4js/proj4js/releases).
+
+if you do not want to download anything, Proj4js is also hosted on [cdnjs](http://www.cdnjs.com/libraries/proj4js) for direct use in your browser applications.
+
+##Using
+
+the basic signature is:
+
+```javascript
+proj4(fromProjection[, toProjection2, coordinates])
+```
+
+Projections can be proj or wkt strings.
+
+Coordinates may an object of the form `{x:x,y:y}` or an array of the form `[x,y]`.
+
+When all 3 arguments are given, the result is that the coordinates are transformed from projection1 to projection 2. And returned in the same format that they were given in.
+
+```javascript
+var firstProjection = 'PROJCS["NAD83 / Massachusetts Mainland",GEOGCS["NAD83",DATUM["North_American_Datum_1983",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","6269"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4269"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["standard_parallel_1",42.68333333333333],PARAMETER["standard [...]
+var secondProjection = "+proj=gnom +lat_0=90 +lon_0=0 +x_0=6300000 +y_0=6300000 +ellps=WGS84 +datum=WGS84 +units=m +no_defs";
+//I'm not going to redefine those two in latter examples.
+proj4(firstProjection,secondProjection,[2,5]);
+// [-2690666.2977344505, 3662659.885459918]
+```
+
+If only 1 projection is given then it is assumed that it is being projected *from* WGS84 (fromProjection is WGS84).
+
+```javascript
+proj4(firstProjection,[-71,41]);
+// [242075.00535055372, 750123.32090043]
+```
+
+If no coordinates are given an object with two methods is returned, its methods are `forward` which projects from the first projection to the second and `inverse` which projects from the second to the first.
+
+```javascript
+proj4(firstProjection,secondProjection).forward([2,5]);
+// [-2690666.2977344505, 3662659.885459918]
+proj4(secondProjection,firstProjection).inverse([2,5]);
+// [-2690666.2977344505, 3662659.885459918]
+```
+
+and as above if only one projection is given, it's assumed to be coming from wgs84
+
+```javascript
+proj4(firstProjection).forward([-71,41]);
+// [242075.00535055372, 750123.32090043]
+proj4(firstProjection).inverse([242075.00535055372, 750123.32090043]);
+//[-71, 40.99999999999986]
+//the floating points to answer your question
+```
+
+## Named Projections
+
+If you prefer to define a projection as a string and reference it that way, you may use the proj4.defs method which can be called 2 ways, with a name and projection:
+
+```js
+proj4.defs('WGS84', "+title=WGS 84 (long/lat) +proj=longlat +ellps=WGS84 +datum=WGS84 +units=degrees");
+```
+
+or with an array
+
+```js
+proj4.defs([
+ [
+ 'EPSG:4326',
+ '+title=WGS 84 (long/lat) +proj=longlat +ellps=WGS84 +datum=WGS84 +units=degrees'],
+ [
+ 'EPSG:4269',
+ '+title=NAD83 (long/lat) +proj=longlat +a=6378137.0 +b=6356752.31414036 +ellps=GRS80 +datum=NAD83 +units=degrees'
+ ]
+]);
+```
+
+you can then do
+
+```js
+proj4('EPSG:4326');
+```
+
+instead of writing out the whole proj definition, by default proj4 has the following projections predefined:
+
+- 'EPSG:4326', which has the following alias
+ - 'WGS84'
+- 'EPSG:4269'
+- 'EPSG:3857', which has the following aliases
+ - 'EPSG:3785'
+ - 'GOOGLE'
+ - 'EPSG:900913'
+ - 'EPSG:102113'
+
+defined projections can also be accessed through the proj4.defs function (`proj4.defs('EPSG:4326')`).
+
+proj4.defs can also be used to define a named alias:
+
+```javascript
+proj4.defs('urn:x-ogc:def:crs:EPSG:4326', proj4.defs('EPSG:4326'));
+```
+
+##Developing
+to set up build tools make sure you have node and grunt-cli installed and then run `npm install`
+
+to do the complete build and browser tests run
+
+```bash
+grunt
+```
+
+to run node tests run
+
+```bash
+npm test
+```
+
+to run node tests with coverage run
+
+```bash
+node test --coverage
+```
+
+to create a build with only default projections (latlon and Mercator) run
+
+```bash
+grunt build
+```
+
+to create a build with only custom projections include a comma separated list of projections codes (the file name in 'lib/projections' without the '.js') after a colon, e.g.
+
+```bash
+grunt build:tmerc
+#includes transverse Mercator
+grunt build:lcc
+#includes lambert conformal conic
+grunt build:omerc,moll
+#includes oblique Mercator and Mollweide
+```
diff --git a/REFERENCES.md b/REFERENCES.md
new file mode 100644
index 0000000..a620fd0
--- /dev/null
+++ b/REFERENCES.md
@@ -0,0 +1,29 @@
+1. Snyder, John P., "Map Projections--A Working Manual", U.S. Geological Survey
+ Professional Paper 1395 (Supersedes USGS Bulletin 1532),
+ United State Government Printing Office, Washington D.C., 1987.
+2. Snyder, John P. and Voxland, Philip M., "An Album of Map Projections",
+ U.S. Geological Survey Professional Paper 1453 ,
+ United State Government Printing Office, Washington D.C., 1989.
+3. "Cartographic Projection Procedures for the UNIX Environment-
+ A User's Manual" by Gerald I. Evenden,
+ USGS Open File Report 90-284and Release 4 Interim Reports (2003)
+4. Snyder, John P., "Flattening the Earth -
+ Two Thousand Years of Map Projections", Univ. Chicago Press, 1993
+5. Wolfram Mathworld "Gnomonic Projection"
+ http://mathworld.wolfram.com/GnomonicProjection.html
+ Accessed: 12th November 2009
+6. "New Equal-Area Map Projections for Noncircular Regions", John P. Snyder,
+ The American Cartographer, Vol 15, No. 4, October 1988, pp. 341-355.
+7. Snyder, John P., "Map Projections--A Working Manual", U.S. Geological
+ Survey Professional Paper 1395 (Supersedes USGS Bulletin 1532), United
+ State Government Printing Office, Washington D.C., 1987.
+8. "Software Documentation for GCTP General Cartographic Transformation
+ Package", U.S. Geological Survey National Mapping Division, May 1982.
+9. Department of Land and Survey Technical Circular 1973/32
+ http://www.linz.govt.nz/docs/miscellaneous/nz-map-definition.pdf
+10. OSG Technical Report 4.1
+ http://www.linz.govt.nz/docs/miscellaneous/nzmg.pdf
+11. Formules et constantes pour le Calcul pour la
+ projection cylindrique conforme à axe oblique et pour la transformation entre
+ des systèmes de référence.
+ http://www.swisstopo.admin.ch/internet/swisstopo/fr/home/topics/survey/sys/refsys/switzerland.parsysrelated1.31216.downloadList.77004.DownloadFile.tmp/swissprojectionfr.pdf
\ No newline at end of file
diff --git a/bower.json b/bower.json
new file mode 100644
index 0000000..8ebebef
--- /dev/null
+++ b/bower.json
@@ -0,0 +1,24 @@
+{
+ "name": "proj4",
+ "version": "2.3.3",
+ "description": "Proj4js is a JavaScript library to transform point coordinates from one coordinate system to another, including datum transformations.",
+ "homepage": "https://github.com/proj4js/proj4js",
+ "main": "dist/proj4.js",
+ "keywords": [
+ "gis",
+ "projections",
+ "geospatial",
+ "transform",
+ "datum"
+ ],
+ "license": "MIT",
+ "ignore": [
+ "**/.*",
+ "node_modules",
+ "bower_components",
+ "test",
+ "tests",
+ "almond",
+ "src"
+ ]
+}
diff --git a/changelog.md b/changelog.md
new file mode 100644
index 0000000..7901d49
--- /dev/null
+++ b/changelog.md
@@ -0,0 +1,21 @@
+Change log
+===
+- 2.2.1: Documentation fixes and added proj4.defs('name') as an alias for proj4.defs['name'];
+
+- 2.1.4: dist folder is added back in after accidentally omitting it in 2.1.1
+
+- 2.1.3: skipped as issues with the dist folder are ironed out.
+
+- 2.1.2: added sensible defaults for false eastings/northings
+
+- 2.1.1: tweaks to how we publish it, fixes related to errors with the OSGB36 and Reseau National Belge 1972 datums, we took the first steps towards depreciating the proj4.Point class.
+
+- 2.1.0: targeted builds for projections are now supported, and internally projection creation is more modular.
+
+- 2.0.3: mgrs is broken out into it's own module loaded via npm.
+
+- 2.0.2: module common is broken up into a collection of smaller modules.
+
+- 2.0.1: fix typo in eqc projection.
+
+- 2.0.0: we start the change log.
\ No newline at end of file
diff --git a/component.json b/component.json
new file mode 100644
index 0000000..4e1852f
--- /dev/null
+++ b/component.json
@@ -0,0 +1,17 @@
+{
+ "name": "proj4",
+ "version": "2.3.3",
+ "description": "Proj4js is a JavaScript library to transform point coordinates from one coordinate system to another, including datum transformations.",
+ "repo": "proj4js/proj4js",
+ "keywords": [
+ "projections",
+ "proj4",
+ "transform",
+ "crs"
+ ],
+ "license": "MIT",
+ "main": "dist/proj4.js",
+ "scripts": [
+ "dist/proj4.js"
+ ]
+}
diff --git a/dist/proj4-src.js b/dist/proj4-src.js
new file mode 100644
index 0000000..5261070
--- /dev/null
+++ b/dist/proj4-src.js
@@ -0,0 +1,5458 @@
+!function(e){if("object"==typeof exports)module.exports=e();else if("function"==typeof define&&define.amd)define(e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.proj4=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={e [...]
+var mgrs = _dereq_('mgrs');
+
+function Point(x, y, z) {
+ if (!(this instanceof Point)) {
+ return new Point(x, y, z);
+ }
+ if (Array.isArray(x)) {
+ this.x = x[0];
+ this.y = x[1];
+ this.z = x[2] || 0.0;
+ }else if(typeof x === 'object'){
+ this.x = x.x;
+ this.y = x.y;
+ this.z = x.z || 0.0;
+ } else if (typeof x === 'string' && typeof y === 'undefined') {
+ var coords = x.split(',');
+ this.x = parseFloat(coords[0], 10);
+ this.y = parseFloat(coords[1], 10);
+ this.z = parseFloat(coords[2], 10) || 0.0;
+ }
+ else {
+ this.x = x;
+ this.y = y;
+ this.z = z || 0.0;
+ }
+ console.warn('proj4.Point will be removed in version 3, use proj4.toPoint');
+}
+
+Point.fromMGRS = function(mgrsStr) {
+ return new Point(mgrs.toPoint(mgrsStr));
+};
+Point.prototype.toMGRS = function(accuracy) {
+ return mgrs.forward([this.x, this.y], accuracy);
+};
+module.exports = Point;
+},{"mgrs":66}],2:[function(_dereq_,module,exports){
+var parseCode = _dereq_("./parseCode");
+var extend = _dereq_('./extend');
+var projections = _dereq_('./projections');
+var deriveConstants = _dereq_('./deriveConstants');
+
+function Projection(srsCode,callback) {
+ if (!(this instanceof Projection)) {
+ return new Projection(srsCode);
+ }
+ callback = callback || function(error){
+ if(error){
+ throw error;
+ }
+ };
+ var json = parseCode(srsCode);
+ if(typeof json !== 'object'){
+ callback(srsCode);
+ return;
+ }
+ var modifiedJSON = deriveConstants(json);
+ var ourProj = Projection.projections.get(modifiedJSON.projName);
+ if(ourProj){
+ extend(this, modifiedJSON);
+ extend(this, ourProj);
+ this.init();
+ callback(null, this);
+ }else{
+ callback(srsCode);
+ }
+}
+Projection.projections = projections;
+Projection.projections.start();
+module.exports = Projection;
+
+},{"./deriveConstants":32,"./extend":33,"./parseCode":36,"./projections":38}],3:[function(_dereq_,module,exports){
+module.exports = function(crs, denorm, point) {
+ var xin = point.x,
+ yin = point.y,
+ zin = point.z || 0.0;
+ var v, t, i;
+ for (i = 0; i < 3; i++) {
+ if (denorm && i === 2 && point.z === undefined) {
+ continue;
+ }
+ if (i === 0) {
+ v = xin;
+ t = 'x';
+ }
+ else if (i === 1) {
+ v = yin;
+ t = 'y';
+ }
+ else {
+ v = zin;
+ t = 'z';
+ }
+ switch (crs.axis[i]) {
+ case 'e':
+ point[t] = v;
+ break;
+ case 'w':
+ point[t] = -v;
+ break;
+ case 'n':
+ point[t] = v;
+ break;
+ case 's':
+ point[t] = -v;
+ break;
+ case 'u':
+ if (point[t] !== undefined) {
+ point.z = v;
+ }
+ break;
+ case 'd':
+ if (point[t] !== undefined) {
+ point.z = -v;
+ }
+ break;
+ default:
+ //console.log("ERROR: unknow axis ("+crs.axis[i]+") - check definition of "+crs.projName);
+ return null;
+ }
+ }
+ return point;
+};
+
+},{}],4:[function(_dereq_,module,exports){
+var HALF_PI = Math.PI/2;
+var sign = _dereq_('./sign');
+
+module.exports = function(x) {
+ return (Math.abs(x) < HALF_PI) ? x : (x - (sign(x) * Math.PI));
+};
+},{"./sign":21}],5:[function(_dereq_,module,exports){
+var TWO_PI = Math.PI * 2;
+// SPI is slightly greater than Math.PI, so values that exceed the -180..180
+// degree range by a tiny amount don't get wrapped. This prevents points that
+// have drifted from their original location along the 180th meridian (due to
+// floating point error) from changing their sign.
+var SPI = 3.14159265359;
+var sign = _dereq_('./sign');
+
+module.exports = function(x) {
+ return (Math.abs(x) <= SPI) ? x : (x - (sign(x) * TWO_PI));
+};
+},{"./sign":21}],6:[function(_dereq_,module,exports){
+module.exports = function(x) {
+ if (Math.abs(x) > 1) {
+ x = (x > 1) ? 1 : -1;
+ }
+ return Math.asin(x);
+};
+},{}],7:[function(_dereq_,module,exports){
+module.exports = function(x) {
+ return (1 - 0.25 * x * (1 + x / 16 * (3 + 1.25 * x)));
+};
+},{}],8:[function(_dereq_,module,exports){
+module.exports = function(x) {
+ return (0.375 * x * (1 + 0.25 * x * (1 + 0.46875 * x)));
+};
+},{}],9:[function(_dereq_,module,exports){
+module.exports = function(x) {
+ return (0.05859375 * x * x * (1 + 0.75 * x));
+};
+},{}],10:[function(_dereq_,module,exports){
+module.exports = function(x) {
+ return (x * x * x * (35 / 3072));
+};
+},{}],11:[function(_dereq_,module,exports){
+module.exports = function(a, e, sinphi) {
+ var temp = e * sinphi;
+ return a / Math.sqrt(1 - temp * temp);
+};
+},{}],12:[function(_dereq_,module,exports){
+module.exports = function(ml, e0, e1, e2, e3) {
+ var phi;
+ var dphi;
+
+ phi = ml / e0;
+ for (var i = 0; i < 15; i++) {
+ dphi = (ml - (e0 * phi - e1 * Math.sin(2 * phi) + e2 * Math.sin(4 * phi) - e3 * Math.sin(6 * phi))) / (e0 - 2 * e1 * Math.cos(2 * phi) + 4 * e2 * Math.cos(4 * phi) - 6 * e3 * Math.cos(6 * phi));
+ phi += dphi;
+ if (Math.abs(dphi) <= 0.0000000001) {
+ return phi;
+ }
+ }
+
+ //..reportError("IMLFN-CONV:Latitude failed to converge after 15 iterations");
+ return NaN;
+};
+},{}],13:[function(_dereq_,module,exports){
+var HALF_PI = Math.PI/2;
+
+module.exports = function(eccent, q) {
+ var temp = 1 - (1 - eccent * eccent) / (2 * eccent) * Math.log((1 - eccent) / (1 + eccent));
+ if (Math.abs(Math.abs(q) - temp) < 1.0E-6) {
+ if (q < 0) {
+ return (-1 * HALF_PI);
+ }
+ else {
+ return HALF_PI;
+ }
+ }
+ //var phi = 0.5* q/(1-eccent*eccent);
+ var phi = Math.asin(0.5 * q);
+ var dphi;
+ var sin_phi;
+ var cos_phi;
+ var con;
+ for (var i = 0; i < 30; i++) {
+ sin_phi = Math.sin(phi);
+ cos_phi = Math.cos(phi);
+ con = eccent * sin_phi;
+ dphi = Math.pow(1 - con * con, 2) / (2 * cos_phi) * (q / (1 - eccent * eccent) - sin_phi / (1 - con * con) + 0.5 / eccent * Math.log((1 - con) / (1 + con)));
+ phi += dphi;
+ if (Math.abs(dphi) <= 0.0000000001) {
+ return phi;
+ }
+ }
+
+ //console.log("IQSFN-CONV:Latitude failed to converge after 30 iterations");
+ return NaN;
+};
+},{}],14:[function(_dereq_,module,exports){
+module.exports = function(e0, e1, e2, e3, phi) {
+ return (e0 * phi - e1 * Math.sin(2 * phi) + e2 * Math.sin(4 * phi) - e3 * Math.sin(6 * phi));
+};
+},{}],15:[function(_dereq_,module,exports){
+module.exports = function(eccent, sinphi, cosphi) {
+ var con = eccent * sinphi;
+ return cosphi / (Math.sqrt(1 - con * con));
+};
+},{}],16:[function(_dereq_,module,exports){
+var HALF_PI = Math.PI/2;
+module.exports = function(eccent, ts) {
+ var eccnth = 0.5 * eccent;
+ var con, dphi;
+ var phi = HALF_PI - 2 * Math.atan(ts);
+ for (var i = 0; i <= 15; i++) {
+ con = eccent * Math.sin(phi);
+ dphi = HALF_PI - 2 * Math.atan(ts * (Math.pow(((1 - con) / (1 + con)), eccnth))) - phi;
+ phi += dphi;
+ if (Math.abs(dphi) <= 0.0000000001) {
+ return phi;
+ }
+ }
+ //console.log("phi2z has NoConvergence");
+ return -9999;
+};
+},{}],17:[function(_dereq_,module,exports){
+var C00 = 1;
+var C02 = 0.25;
+var C04 = 0.046875;
+var C06 = 0.01953125;
+var C08 = 0.01068115234375;
+var C22 = 0.75;
+var C44 = 0.46875;
+var C46 = 0.01302083333333333333;
+var C48 = 0.00712076822916666666;
+var C66 = 0.36458333333333333333;
+var C68 = 0.00569661458333333333;
+var C88 = 0.3076171875;
+
+module.exports = function(es) {
+ var en = [];
+ en[0] = C00 - es * (C02 + es * (C04 + es * (C06 + es * C08)));
+ en[1] = es * (C22 - es * (C04 + es * (C06 + es * C08)));
+ var t = es * es;
+ en[2] = t * (C44 - es * (C46 + es * C48));
+ t *= es;
+ en[3] = t * (C66 - es * C68);
+ en[4] = t * es * C88;
+ return en;
+};
+},{}],18:[function(_dereq_,module,exports){
+var pj_mlfn = _dereq_("./pj_mlfn");
+var EPSLN = 1.0e-10;
+var MAX_ITER = 20;
+module.exports = function(arg, es, en) {
+ var k = 1 / (1 - es);
+ var phi = arg;
+ for (var i = MAX_ITER; i; --i) { /* rarely goes over 2 iterations */
+ var s = Math.sin(phi);
+ var t = 1 - es * s * s;
+ //t = this.pj_mlfn(phi, s, Math.cos(phi), en) - arg;
+ //phi -= t * (t * Math.sqrt(t)) * k;
+ t = (pj_mlfn(phi, s, Math.cos(phi), en) - arg) * (t * Math.sqrt(t)) * k;
+ phi -= t;
+ if (Math.abs(t) < EPSLN) {
+ return phi;
+ }
+ }
+ //..reportError("cass:pj_inv_mlfn: Convergence error");
+ return phi;
+};
+},{"./pj_mlfn":19}],19:[function(_dereq_,module,exports){
+module.exports = function(phi, sphi, cphi, en) {
+ cphi *= sphi;
+ sphi *= sphi;
+ return (en[0] * phi - cphi * (en[1] + sphi * (en[2] + sphi * (en[3] + sphi * en[4]))));
+};
+},{}],20:[function(_dereq_,module,exports){
+module.exports = function(eccent, sinphi) {
+ var con;
+ if (eccent > 1.0e-7) {
+ con = eccent * sinphi;
+ return ((1 - eccent * eccent) * (sinphi / (1 - con * con) - (0.5 / eccent) * Math.log((1 - con) / (1 + con))));
+ }
+ else {
+ return (2 * sinphi);
+ }
+};
+},{}],21:[function(_dereq_,module,exports){
+module.exports = function(x) {
+ return x<0 ? -1 : 1;
+};
+},{}],22:[function(_dereq_,module,exports){
+module.exports = function(esinp, exp) {
+ return (Math.pow((1 - esinp) / (1 + esinp), exp));
+};
+},{}],23:[function(_dereq_,module,exports){
+module.exports = function (array){
+ var out = {
+ x: array[0],
+ y: array[1]
+ };
+ if (array.length>2) {
+ out.z = array[2];
+ }
+ if (array.length>3) {
+ out.m = array[3];
+ }
+ return out;
+};
+},{}],24:[function(_dereq_,module,exports){
+var HALF_PI = Math.PI/2;
+
+module.exports = function(eccent, phi, sinphi) {
+ var con = eccent * sinphi;
+ var com = 0.5 * eccent;
+ con = Math.pow(((1 - con) / (1 + con)), com);
+ return (Math.tan(0.5 * (HALF_PI - phi)) / con);
+};
+},{}],25:[function(_dereq_,module,exports){
+exports.wgs84 = {
+ towgs84: "0,0,0",
+ ellipse: "WGS84",
+ datumName: "WGS84"
+};
+exports.ch1903 = {
+ towgs84: "674.374,15.056,405.346",
+ ellipse: "bessel",
+ datumName: "swiss"
+};
+exports.ggrs87 = {
+ towgs84: "-199.87,74.79,246.62",
+ ellipse: "GRS80",
+ datumName: "Greek_Geodetic_Reference_System_1987"
+};
+exports.nad83 = {
+ towgs84: "0,0,0",
+ ellipse: "GRS80",
+ datumName: "North_American_Datum_1983"
+};
+exports.nad27 = {
+ nadgrids: "@conus, at alaska, at ntv2_0.gsb, at ntv1_can.dat",
+ ellipse: "clrk66",
+ datumName: "North_American_Datum_1927"
+};
+exports.potsdam = {
+ towgs84: "606.0,23.0,413.0",
+ ellipse: "bessel",
+ datumName: "Potsdam Rauenberg 1950 DHDN"
+};
+exports.carthage = {
+ towgs84: "-263.0,6.0,431.0",
+ ellipse: "clark80",
+ datumName: "Carthage 1934 Tunisia"
+};
+exports.hermannskogel = {
+ towgs84: "653.0,-212.0,449.0",
+ ellipse: "bessel",
+ datumName: "Hermannskogel"
+};
+exports.ire65 = {
+ towgs84: "482.530,-130.596,564.557,-1.042,-0.214,-0.631,8.15",
+ ellipse: "mod_airy",
+ datumName: "Ireland 1965"
+};
+exports.rassadiran = {
+ towgs84: "-133.63,-157.5,-158.62",
+ ellipse: "intl",
+ datumName: "Rassadiran"
+};
+exports.nzgd49 = {
+ towgs84: "59.47,-5.04,187.44,0.47,-0.1,1.024,-4.5993",
+ ellipse: "intl",
+ datumName: "New Zealand Geodetic Datum 1949"
+};
+exports.osgb36 = {
+ towgs84: "446.448,-125.157,542.060,0.1502,0.2470,0.8421,-20.4894",
+ ellipse: "airy",
+ datumName: "Airy 1830"
+};
+exports.s_jtsk = {
+ towgs84: "589,76,480",
+ ellipse: 'bessel',
+ datumName: 'S-JTSK (Ferro)'
+};
+exports.beduaram = {
+ towgs84: '-106,-87,188',
+ ellipse: 'clrk80',
+ datumName: 'Beduaram'
+};
+exports.gunung_segara = {
+ towgs84: '-403,684,41',
+ ellipse: 'bessel',
+ datumName: 'Gunung Segara Jakarta'
+};
+exports.rnb72 = {
+ towgs84: "106.869,-52.2978,103.724,-0.33657,0.456955,-1.84218,1",
+ ellipse: "intl",
+ datumName: "Reseau National Belge 1972"
+};
+},{}],26:[function(_dereq_,module,exports){
+exports.MERIT = {
+ a: 6378137.0,
+ rf: 298.257,
+ ellipseName: "MERIT 1983"
+};
+exports.SGS85 = {
+ a: 6378136.0,
+ rf: 298.257,
+ ellipseName: "Soviet Geodetic System 85"
+};
+exports.GRS80 = {
+ a: 6378137.0,
+ rf: 298.257222101,
+ ellipseName: "GRS 1980(IUGG, 1980)"
+};
+exports.IAU76 = {
+ a: 6378140.0,
+ rf: 298.257,
+ ellipseName: "IAU 1976"
+};
+exports.airy = {
+ a: 6377563.396,
+ b: 6356256.910,
+ ellipseName: "Airy 1830"
+};
+exports.APL4 = {
+ a: 6378137,
+ rf: 298.25,
+ ellipseName: "Appl. Physics. 1965"
+};
+exports.NWL9D = {
+ a: 6378145.0,
+ rf: 298.25,
+ ellipseName: "Naval Weapons Lab., 1965"
+};
+exports.mod_airy = {
+ a: 6377340.189,
+ b: 6356034.446,
+ ellipseName: "Modified Airy"
+};
+exports.andrae = {
+ a: 6377104.43,
+ rf: 300.0,
+ ellipseName: "Andrae 1876 (Den., Iclnd.)"
+};
+exports.aust_SA = {
+ a: 6378160.0,
+ rf: 298.25,
+ ellipseName: "Australian Natl & S. Amer. 1969"
+};
+exports.GRS67 = {
+ a: 6378160.0,
+ rf: 298.2471674270,
+ ellipseName: "GRS 67(IUGG 1967)"
+};
+exports.bessel = {
+ a: 6377397.155,
+ rf: 299.1528128,
+ ellipseName: "Bessel 1841"
+};
+exports.bess_nam = {
+ a: 6377483.865,
+ rf: 299.1528128,
+ ellipseName: "Bessel 1841 (Namibia)"
+};
+exports.clrk66 = {
+ a: 6378206.4,
+ b: 6356583.8,
+ ellipseName: "Clarke 1866"
+};
+exports.clrk80 = {
+ a: 6378249.145,
+ rf: 293.4663,
+ ellipseName: "Clarke 1880 mod."
+};
+exports.clrk58 = {
+ a: 6378293.645208759,
+ rf: 294.2606763692654,
+ ellipseName: "Clarke 1858"
+};
+exports.CPM = {
+ a: 6375738.7,
+ rf: 334.29,
+ ellipseName: "Comm. des Poids et Mesures 1799"
+};
+exports.delmbr = {
+ a: 6376428.0,
+ rf: 311.5,
+ ellipseName: "Delambre 1810 (Belgium)"
+};
+exports.engelis = {
+ a: 6378136.05,
+ rf: 298.2566,
+ ellipseName: "Engelis 1985"
+};
+exports.evrst30 = {
+ a: 6377276.345,
+ rf: 300.8017,
+ ellipseName: "Everest 1830"
+};
+exports.evrst48 = {
+ a: 6377304.063,
+ rf: 300.8017,
+ ellipseName: "Everest 1948"
+};
+exports.evrst56 = {
+ a: 6377301.243,
+ rf: 300.8017,
+ ellipseName: "Everest 1956"
+};
+exports.evrst69 = {
+ a: 6377295.664,
+ rf: 300.8017,
+ ellipseName: "Everest 1969"
+};
+exports.evrstSS = {
+ a: 6377298.556,
+ rf: 300.8017,
+ ellipseName: "Everest (Sabah & Sarawak)"
+};
+exports.fschr60 = {
+ a: 6378166.0,
+ rf: 298.3,
+ ellipseName: "Fischer (Mercury Datum) 1960"
+};
+exports.fschr60m = {
+ a: 6378155.0,
+ rf: 298.3,
+ ellipseName: "Fischer 1960"
+};
+exports.fschr68 = {
+ a: 6378150.0,
+ rf: 298.3,
+ ellipseName: "Fischer 1968"
+};
+exports.helmert = {
+ a: 6378200.0,
+ rf: 298.3,
+ ellipseName: "Helmert 1906"
+};
+exports.hough = {
+ a: 6378270.0,
+ rf: 297.0,
+ ellipseName: "Hough"
+};
+exports.intl = {
+ a: 6378388.0,
+ rf: 297.0,
+ ellipseName: "International 1909 (Hayford)"
+};
+exports.kaula = {
+ a: 6378163.0,
+ rf: 298.24,
+ ellipseName: "Kaula 1961"
+};
+exports.lerch = {
+ a: 6378139.0,
+ rf: 298.257,
+ ellipseName: "Lerch 1979"
+};
+exports.mprts = {
+ a: 6397300.0,
+ rf: 191.0,
+ ellipseName: "Maupertius 1738"
+};
+exports.new_intl = {
+ a: 6378157.5,
+ b: 6356772.2,
+ ellipseName: "New International 1967"
+};
+exports.plessis = {
+ a: 6376523.0,
+ rf: 6355863.0,
+ ellipseName: "Plessis 1817 (France)"
+};
+exports.krass = {
+ a: 6378245.0,
+ rf: 298.3,
+ ellipseName: "Krassovsky, 1942"
+};
+exports.SEasia = {
+ a: 6378155.0,
+ b: 6356773.3205,
+ ellipseName: "Southeast Asia"
+};
+exports.walbeck = {
+ a: 6376896.0,
+ b: 6355834.8467,
+ ellipseName: "Walbeck"
+};
+exports.WGS60 = {
+ a: 6378165.0,
+ rf: 298.3,
+ ellipseName: "WGS 60"
+};
+exports.WGS66 = {
+ a: 6378145.0,
+ rf: 298.25,
+ ellipseName: "WGS 66"
+};
+exports.WGS7 = {
+ a: 6378135.0,
+ rf: 298.26,
+ ellipseName: "WGS 72"
+};
+exports.WGS84 = {
+ a: 6378137.0,
+ rf: 298.257223563,
+ ellipseName: "WGS 84"
+};
+exports.sphere = {
+ a: 6370997.0,
+ b: 6370997.0,
+ ellipseName: "Normal Sphere (r=6370997)"
+};
+},{}],27:[function(_dereq_,module,exports){
+exports.greenwich = 0.0; //"0dE",
+exports.lisbon = -9.131906111111; //"9d07'54.862\"W",
+exports.paris = 2.337229166667; //"2d20'14.025\"E",
+exports.bogota = -74.080916666667; //"74d04'51.3\"W",
+exports.madrid = -3.687938888889; //"3d41'16.58\"W",
+exports.rome = 12.452333333333; //"12d27'8.4\"E",
+exports.bern = 7.439583333333; //"7d26'22.5\"E",
+exports.jakarta = 106.807719444444; //"106d48'27.79\"E",
+exports.ferro = -17.666666666667; //"17d40'W",
+exports.brussels = 4.367975; //"4d22'4.71\"E",
+exports.stockholm = 18.058277777778; //"18d3'29.8\"E",
+exports.athens = 23.7163375; //"23d42'58.815\"E",
+exports.oslo = 10.722916666667; //"10d43'22.5\"E"
+},{}],28:[function(_dereq_,module,exports){
+var proj = _dereq_('./Proj');
+var transform = _dereq_('./transform');
+var wgs84 = proj('WGS84');
+
+function transformer(from, to, coords) {
+ var transformedArray;
+ if (Array.isArray(coords)) {
+ transformedArray = transform(from, to, coords);
+ if (coords.length === 3) {
+ return [transformedArray.x, transformedArray.y, transformedArray.z];
+ }
+ else {
+ return [transformedArray.x, transformedArray.y];
+ }
+ }
+ else {
+ return transform(from, to, coords);
+ }
+}
+
+function checkProj(item) {
+ if (item instanceof proj) {
+ return item;
+ }
+ if (item.oProj) {
+ return item.oProj;
+ }
+ return proj(item);
+}
+function proj4(fromProj, toProj, coord) {
+ fromProj = checkProj(fromProj);
+ var single = false;
+ var obj;
+ if (typeof toProj === 'undefined') {
+ toProj = fromProj;
+ fromProj = wgs84;
+ single = true;
+ }
+ else if (typeof toProj.x !== 'undefined' || Array.isArray(toProj)) {
+ coord = toProj;
+ toProj = fromProj;
+ fromProj = wgs84;
+ single = true;
+ }
+ toProj = checkProj(toProj);
+ if (coord) {
+ return transformer(fromProj, toProj, coord);
+ }
+ else {
+ obj = {
+ forward: function(coords) {
+ return transformer(fromProj, toProj, coords);
+ },
+ inverse: function(coords) {
+ return transformer(toProj, fromProj, coords);
+ }
+ };
+ if (single) {
+ obj.oProj = toProj;
+ }
+ return obj;
+ }
+}
+module.exports = proj4;
+},{"./Proj":2,"./transform":64}],29:[function(_dereq_,module,exports){
+var HALF_PI = Math.PI/2;
+var PJD_3PARAM = 1;
+var PJD_7PARAM = 2;
+var PJD_GRIDSHIFT = 3;
+var PJD_WGS84 = 4; // WGS84 or equivalent
+var PJD_NODATUM = 5; // WGS84 or equivalent
+var SEC_TO_RAD = 4.84813681109535993589914102357e-6;
+var AD_C = 1.0026000;
+var COS_67P5 = 0.38268343236508977;
+var datum = function(proj) {
+ if (!(this instanceof datum)) {
+ return new datum(proj);
+ }
+ this.datum_type = PJD_WGS84; //default setting
+ if (!proj) {
+ return;
+ }
+ if (proj.datumCode && proj.datumCode === 'none') {
+ this.datum_type = PJD_NODATUM;
+ }
+ if (proj.datum_params) {
+ for (var i = 0; i < proj.datum_params.length; i++) {
+ proj.datum_params[i] = parseFloat(proj.datum_params[i]);
+ }
+ if (proj.datum_params[0] !== 0 || proj.datum_params[1] !== 0 || proj.datum_params[2] !== 0) {
+ this.datum_type = PJD_3PARAM;
+ }
+ if (proj.datum_params.length > 3) {
+ if (proj.datum_params[3] !== 0 || proj.datum_params[4] !== 0 || proj.datum_params[5] !== 0 || proj.datum_params[6] !== 0) {
+ this.datum_type = PJD_7PARAM;
+ proj.datum_params[3] *= SEC_TO_RAD;
+ proj.datum_params[4] *= SEC_TO_RAD;
+ proj.datum_params[5] *= SEC_TO_RAD;
+ proj.datum_params[6] = (proj.datum_params[6] / 1000000.0) + 1.0;
+ }
+ }
+ }
+ // DGR 2011-03-21 : nadgrids support
+ this.datum_type = proj.grids ? PJD_GRIDSHIFT : this.datum_type;
+
+ this.a = proj.a; //datum object also uses these values
+ this.b = proj.b;
+ this.es = proj.es;
+ this.ep2 = proj.ep2;
+ this.datum_params = proj.datum_params;
+ if (this.datum_type === PJD_GRIDSHIFT) {
+ this.grids = proj.grids;
+ }
+};
+datum.prototype = {
+
+
+ /****************************************************************/
+ // cs_compare_datums()
+ // Returns TRUE if the two datums match, otherwise FALSE.
+ compare_datums: function(dest) {
+ if (this.datum_type !== dest.datum_type) {
+ return false; // false, datums are not equal
+ }
+ else if (this.a !== dest.a || Math.abs(this.es - dest.es) > 0.000000000050) {
+ // the tolerence for es is to ensure that GRS80 and WGS84
+ // are considered identical
+ return false;
+ }
+ else if (this.datum_type === PJD_3PARAM) {
+ return (this.datum_params[0] === dest.datum_params[0] && this.datum_params[1] === dest.datum_params[1] && this.datum_params[2] === dest.datum_params[2]);
+ }
+ else if (this.datum_type === PJD_7PARAM) {
+ return (this.datum_params[0] === dest.datum_params[0] && this.datum_params[1] === dest.datum_params[1] && this.datum_params[2] === dest.datum_params[2] && this.datum_params[3] === dest.datum_params[3] && this.datum_params[4] === dest.datum_params[4] && this.datum_params[5] === dest.datum_params[5] && this.datum_params[6] === dest.datum_params[6]);
+ }
+ else if (this.datum_type === PJD_GRIDSHIFT || dest.datum_type === PJD_GRIDSHIFT) {
+ //alert("ERROR: Grid shift transformations are not implemented.");
+ //return false
+ //DGR 2012-07-29 lazy ...
+ return this.nadgrids === dest.nadgrids;
+ }
+ else {
+ return true; // datums are equal
+ }
+ }, // cs_compare_datums()
+
+ /*
+ * The function Convert_Geodetic_To_Geocentric converts geodetic coordinates
+ * (latitude, longitude, and height) to geocentric coordinates (X, Y, Z),
+ * according to the current ellipsoid parameters.
+ *
+ * Latitude : Geodetic latitude in radians (input)
+ * Longitude : Geodetic longitude in radians (input)
+ * Height : Geodetic height, in meters (input)
+ * X : Calculated Geocentric X coordinate, in meters (output)
+ * Y : Calculated Geocentric Y coordinate, in meters (output)
+ * Z : Calculated Geocentric Z coordinate, in meters (output)
+ *
+ */
+ geodetic_to_geocentric: function(p) {
+ var Longitude = p.x;
+ var Latitude = p.y;
+ var Height = p.z ? p.z : 0; //Z value not always supplied
+ var X; // output
+ var Y;
+ var Z;
+
+ var Error_Code = 0; // GEOCENT_NO_ERROR;
+ var Rn; /* Earth radius at location */
+ var Sin_Lat; /* Math.sin(Latitude) */
+ var Sin2_Lat; /* Square of Math.sin(Latitude) */
+ var Cos_Lat; /* Math.cos(Latitude) */
+
+ /*
+ ** Don't blow up if Latitude is just a little out of the value
+ ** range as it may just be a rounding issue. Also removed longitude
+ ** test, it should be wrapped by Math.cos() and Math.sin(). NFW for PROJ.4, Sep/2001.
+ */
+ if (Latitude < -HALF_PI && Latitude > -1.001 * HALF_PI) {
+ Latitude = -HALF_PI;
+ }
+ else if (Latitude > HALF_PI && Latitude < 1.001 * HALF_PI) {
+ Latitude = HALF_PI;
+ }
+ else if ((Latitude < -HALF_PI) || (Latitude > HALF_PI)) {
+ /* Latitude out of range */
+ //..reportError('geocent:lat out of range:' + Latitude);
+ return null;
+ }
+
+ if (Longitude > Math.PI) {
+ Longitude -= (2 * Math.PI);
+ }
+ Sin_Lat = Math.sin(Latitude);
+ Cos_Lat = Math.cos(Latitude);
+ Sin2_Lat = Sin_Lat * Sin_Lat;
+ Rn = this.a / (Math.sqrt(1.0e0 - this.es * Sin2_Lat));
+ X = (Rn + Height) * Cos_Lat * Math.cos(Longitude);
+ Y = (Rn + Height) * Cos_Lat * Math.sin(Longitude);
+ Z = ((Rn * (1 - this.es)) + Height) * Sin_Lat;
+
+ p.x = X;
+ p.y = Y;
+ p.z = Z;
+ return Error_Code;
+ }, // cs_geodetic_to_geocentric()
+
+
+ geocentric_to_geodetic: function(p) {
+ /* local defintions and variables */
+ /* end-criterium of loop, accuracy of sin(Latitude) */
+ var genau = 1e-12;
+ var genau2 = (genau * genau);
+ var maxiter = 30;
+
+ var P; /* distance between semi-minor axis and location */
+ var RR; /* distance between center and location */
+ var CT; /* sin of geocentric latitude */
+ var ST; /* cos of geocentric latitude */
+ var RX;
+ var RK;
+ var RN; /* Earth radius at location */
+ var CPHI0; /* cos of start or old geodetic latitude in iterations */
+ var SPHI0; /* sin of start or old geodetic latitude in iterations */
+ var CPHI; /* cos of searched geodetic latitude */
+ var SPHI; /* sin of searched geodetic latitude */
+ var SDPHI; /* end-criterium: addition-theorem of sin(Latitude(iter)-Latitude(iter-1)) */
+ var At_Pole; /* indicates location is in polar region */
+ var iter; /* # of continous iteration, max. 30 is always enough (s.a.) */
+
+ var X = p.x;
+ var Y = p.y;
+ var Z = p.z ? p.z : 0.0; //Z value not always supplied
+ var Longitude;
+ var Latitude;
+ var Height;
+
+ At_Pole = false;
+ P = Math.sqrt(X * X + Y * Y);
+ RR = Math.sqrt(X * X + Y * Y + Z * Z);
+
+ /* special cases for latitude and longitude */
+ if (P / this.a < genau) {
+
+ /* special case, if P=0. (X=0., Y=0.) */
+ At_Pole = true;
+ Longitude = 0.0;
+
+ /* if (X,Y,Z)=(0.,0.,0.) then Height becomes semi-minor axis
+ * of ellipsoid (=center of mass), Latitude becomes PI/2 */
+ if (RR / this.a < genau) {
+ Latitude = HALF_PI;
+ Height = -this.b;
+ return;
+ }
+ }
+ else {
+ /* ellipsoidal (geodetic) longitude
+ * interval: -PI < Longitude <= +PI */
+ Longitude = Math.atan2(Y, X);
+ }
+
+ /* --------------------------------------------------------------
+ * Following iterative algorithm was developped by
+ * "Institut for Erdmessung", University of Hannover, July 1988.
+ * Internet: www.ife.uni-hannover.de
+ * Iterative computation of CPHI,SPHI and Height.
+ * Iteration of CPHI and SPHI to 10**-12 radian resp.
+ * 2*10**-7 arcsec.
+ * --------------------------------------------------------------
+ */
+ CT = Z / RR;
+ ST = P / RR;
+ RX = 1.0 / Math.sqrt(1.0 - this.es * (2.0 - this.es) * ST * ST);
+ CPHI0 = ST * (1.0 - this.es) * RX;
+ SPHI0 = CT * RX;
+ iter = 0;
+
+ /* loop to find sin(Latitude) resp. Latitude
+ * until |sin(Latitude(iter)-Latitude(iter-1))| < genau */
+ do {
+ iter++;
+ RN = this.a / Math.sqrt(1.0 - this.es * SPHI0 * SPHI0);
+
+ /* ellipsoidal (geodetic) height */
+ Height = P * CPHI0 + Z * SPHI0 - RN * (1.0 - this.es * SPHI0 * SPHI0);
+
+ RK = this.es * RN / (RN + Height);
+ RX = 1.0 / Math.sqrt(1.0 - RK * (2.0 - RK) * ST * ST);
+ CPHI = ST * (1.0 - RK) * RX;
+ SPHI = CT * RX;
+ SDPHI = SPHI * CPHI0 - CPHI * SPHI0;
+ CPHI0 = CPHI;
+ SPHI0 = SPHI;
+ }
+ while (SDPHI * SDPHI > genau2 && iter < maxiter);
+
+ /* ellipsoidal (geodetic) latitude */
+ Latitude = Math.atan(SPHI / Math.abs(CPHI));
+
+ p.x = Longitude;
+ p.y = Latitude;
+ p.z = Height;
+ return p;
+ }, // cs_geocentric_to_geodetic()
+
+ /** Convert_Geocentric_To_Geodetic
+ * The method used here is derived from 'An Improved Algorithm for
+ * Geocentric to Geodetic Coordinate Conversion', by Ralph Toms, Feb 1996
+ */
+ geocentric_to_geodetic_noniter: function(p) {
+ var X = p.x;
+ var Y = p.y;
+ var Z = p.z ? p.z : 0; //Z value not always supplied
+ var Longitude;
+ var Latitude;
+ var Height;
+
+ var W; /* distance from Z axis */
+ var W2; /* square of distance from Z axis */
+ var T0; /* initial estimate of vertical component */
+ var T1; /* corrected estimate of vertical component */
+ var S0; /* initial estimate of horizontal component */
+ var S1; /* corrected estimate of horizontal component */
+ var Sin_B0; /* Math.sin(B0), B0 is estimate of Bowring aux variable */
+ var Sin3_B0; /* cube of Math.sin(B0) */
+ var Cos_B0; /* Math.cos(B0) */
+ var Sin_p1; /* Math.sin(phi1), phi1 is estimated latitude */
+ var Cos_p1; /* Math.cos(phi1) */
+ var Rn; /* Earth radius at location */
+ var Sum; /* numerator of Math.cos(phi1) */
+ var At_Pole; /* indicates location is in polar region */
+
+ X = parseFloat(X); // cast from string to float
+ Y = parseFloat(Y);
+ Z = parseFloat(Z);
+
+ At_Pole = false;
+ if (X !== 0.0) {
+ Longitude = Math.atan2(Y, X);
+ }
+ else {
+ if (Y > 0) {
+ Longitude = HALF_PI;
+ }
+ else if (Y < 0) {
+ Longitude = -HALF_PI;
+ }
+ else {
+ At_Pole = true;
+ Longitude = 0.0;
+ if (Z > 0.0) { /* north pole */
+ Latitude = HALF_PI;
+ }
+ else if (Z < 0.0) { /* south pole */
+ Latitude = -HALF_PI;
+ }
+ else { /* center of earth */
+ Latitude = HALF_PI;
+ Height = -this.b;
+ return;
+ }
+ }
+ }
+ W2 = X * X + Y * Y;
+ W = Math.sqrt(W2);
+ T0 = Z * AD_C;
+ S0 = Math.sqrt(T0 * T0 + W2);
+ Sin_B0 = T0 / S0;
+ Cos_B0 = W / S0;
+ Sin3_B0 = Sin_B0 * Sin_B0 * Sin_B0;
+ T1 = Z + this.b * this.ep2 * Sin3_B0;
+ Sum = W - this.a * this.es * Cos_B0 * Cos_B0 * Cos_B0;
+ S1 = Math.sqrt(T1 * T1 + Sum * Sum);
+ Sin_p1 = T1 / S1;
+ Cos_p1 = Sum / S1;
+ Rn = this.a / Math.sqrt(1.0 - this.es * Sin_p1 * Sin_p1);
+ if (Cos_p1 >= COS_67P5) {
+ Height = W / Cos_p1 - Rn;
+ }
+ else if (Cos_p1 <= -COS_67P5) {
+ Height = W / -Cos_p1 - Rn;
+ }
+ else {
+ Height = Z / Sin_p1 + Rn * (this.es - 1.0);
+ }
+ if (At_Pole === false) {
+ Latitude = Math.atan(Sin_p1 / Cos_p1);
+ }
+
+ p.x = Longitude;
+ p.y = Latitude;
+ p.z = Height;
+ return p;
+ }, // geocentric_to_geodetic_noniter()
+
+ /****************************************************************/
+ // pj_geocentic_to_wgs84( p )
+ // p = point to transform in geocentric coordinates (x,y,z)
+ geocentric_to_wgs84: function(p) {
+
+ if (this.datum_type === PJD_3PARAM) {
+ // if( x[io] === HUGE_VAL )
+ // continue;
+ p.x += this.datum_params[0];
+ p.y += this.datum_params[1];
+ p.z += this.datum_params[2];
+
+ }
+ else if (this.datum_type === PJD_7PARAM) {
+ var Dx_BF = this.datum_params[0];
+ var Dy_BF = this.datum_params[1];
+ var Dz_BF = this.datum_params[2];
+ var Rx_BF = this.datum_params[3];
+ var Ry_BF = this.datum_params[4];
+ var Rz_BF = this.datum_params[5];
+ var M_BF = this.datum_params[6];
+ // if( x[io] === HUGE_VAL )
+ // continue;
+ var x_out = M_BF * (p.x - Rz_BF * p.y + Ry_BF * p.z) + Dx_BF;
+ var y_out = M_BF * (Rz_BF * p.x + p.y - Rx_BF * p.z) + Dy_BF;
+ var z_out = M_BF * (-Ry_BF * p.x + Rx_BF * p.y + p.z) + Dz_BF;
+ p.x = x_out;
+ p.y = y_out;
+ p.z = z_out;
+ }
+ }, // cs_geocentric_to_wgs84
+
+ /****************************************************************/
+ // pj_geocentic_from_wgs84()
+ // coordinate system definition,
+ // point to transform in geocentric coordinates (x,y,z)
+ geocentric_from_wgs84: function(p) {
+
+ if (this.datum_type === PJD_3PARAM) {
+ //if( x[io] === HUGE_VAL )
+ // continue;
+ p.x -= this.datum_params[0];
+ p.y -= this.datum_params[1];
+ p.z -= this.datum_params[2];
+
+ }
+ else if (this.datum_type === PJD_7PARAM) {
+ var Dx_BF = this.datum_params[0];
+ var Dy_BF = this.datum_params[1];
+ var Dz_BF = this.datum_params[2];
+ var Rx_BF = this.datum_params[3];
+ var Ry_BF = this.datum_params[4];
+ var Rz_BF = this.datum_params[5];
+ var M_BF = this.datum_params[6];
+ var x_tmp = (p.x - Dx_BF) / M_BF;
+ var y_tmp = (p.y - Dy_BF) / M_BF;
+ var z_tmp = (p.z - Dz_BF) / M_BF;
+ //if( x[io] === HUGE_VAL )
+ // continue;
+
+ p.x = x_tmp + Rz_BF * y_tmp - Ry_BF * z_tmp;
+ p.y = -Rz_BF * x_tmp + y_tmp + Rx_BF * z_tmp;
+ p.z = Ry_BF * x_tmp - Rx_BF * y_tmp + z_tmp;
+ } //cs_geocentric_from_wgs84()
+ }
+};
+
+/** point object, nothing fancy, just allows values to be
+ passed back and forth by reference rather than by value.
+ Other point classes may be used as long as they have
+ x and y properties, which will get modified in the transform method.
+*/
+module.exports = datum;
+
+},{}],30:[function(_dereq_,module,exports){
+var PJD_3PARAM = 1;
+var PJD_7PARAM = 2;
+var PJD_GRIDSHIFT = 3;
+var PJD_NODATUM = 5; // WGS84 or equivalent
+var SRS_WGS84_SEMIMAJOR = 6378137; // only used in grid shift transforms
+var SRS_WGS84_ESQUARED = 0.006694379990141316; //DGR: 2012-07-29
+module.exports = function(source, dest, point) {
+ var wp, i, l;
+
+ function checkParams(fallback) {
+ return (fallback === PJD_3PARAM || fallback === PJD_7PARAM);
+ }
+ // Short cut if the datums are identical.
+ if (source.compare_datums(dest)) {
+ return point; // in this case, zero is sucess,
+ // whereas cs_compare_datums returns 1 to indicate TRUE
+ // confusing, should fix this
+ }
+
+ // Explicitly skip datum transform by setting 'datum=none' as parameter for either source or dest
+ if (source.datum_type === PJD_NODATUM || dest.datum_type === PJD_NODATUM) {
+ return point;
+ }
+
+ //DGR: 2012-07-29 : add nadgrids support (begin)
+ var src_a = source.a;
+ var src_es = source.es;
+
+ var dst_a = dest.a;
+ var dst_es = dest.es;
+
+ var fallback = source.datum_type;
+ // If this datum requires grid shifts, then apply it to geodetic coordinates.
+ if (fallback === PJD_GRIDSHIFT) {
+ if (this.apply_gridshift(source, 0, point) === 0) {
+ source.a = SRS_WGS84_SEMIMAJOR;
+ source.es = SRS_WGS84_ESQUARED;
+ }
+ else {
+ // try 3 or 7 params transformation or nothing ?
+ if (!source.datum_params) {
+ source.a = src_a;
+ source.es = source.es;
+ return point;
+ }
+ wp = 1;
+ for (i = 0, l = source.datum_params.length; i < l; i++) {
+ wp *= source.datum_params[i];
+ }
+ if (wp === 0) {
+ source.a = src_a;
+ source.es = source.es;
+ return point;
+ }
+ if (source.datum_params.length > 3) {
+ fallback = PJD_7PARAM;
+ }
+ else {
+ fallback = PJD_3PARAM;
+ }
+ }
+ }
+ if (dest.datum_type === PJD_GRIDSHIFT) {
+ dest.a = SRS_WGS84_SEMIMAJOR;
+ dest.es = SRS_WGS84_ESQUARED;
+ }
+ // Do we need to go through geocentric coordinates?
+ if (source.es !== dest.es || source.a !== dest.a || checkParams(fallback) || checkParams(dest.datum_type)) {
+ //DGR: 2012-07-29 : add nadgrids support (end)
+ // Convert to geocentric coordinates.
+ source.geodetic_to_geocentric(point);
+ // CHECK_RETURN;
+ // Convert between datums
+ if (checkParams(source.datum_type)) {
+ source.geocentric_to_wgs84(point);
+ // CHECK_RETURN;
+ }
+ if (checkParams(dest.datum_type)) {
+ dest.geocentric_from_wgs84(point);
+ // CHECK_RETURN;
+ }
+ // Convert back to geodetic coordinates
+ dest.geocentric_to_geodetic(point);
+ // CHECK_RETURN;
+ }
+ // Apply grid shift to destination if required
+ if (dest.datum_type === PJD_GRIDSHIFT) {
+ this.apply_gridshift(dest, 1, point);
+ // CHECK_RETURN;
+ }
+
+ source.a = src_a;
+ source.es = src_es;
+ dest.a = dst_a;
+ dest.es = dst_es;
+
+ return point;
+};
+
+
+},{}],31:[function(_dereq_,module,exports){
+var globals = _dereq_('./global');
+var parseProj = _dereq_('./projString');
+var wkt = _dereq_('./wkt');
+
+function defs(name) {
+ /*global console*/
+ var that = this;
+ if (arguments.length === 2) {
+ var def = arguments[1];
+ if (typeof def === 'string') {
+ if (def.charAt(0) === '+') {
+ defs[name] = parseProj(arguments[1]);
+ }
+ else {
+ defs[name] = wkt(arguments[1]);
+ }
+ } else {
+ defs[name] = def;
+ }
+ }
+ else if (arguments.length === 1) {
+ if (Array.isArray(name)) {
+ return name.map(function(v) {
+ if (Array.isArray(v)) {
+ defs.apply(that, v);
+ }
+ else {
+ defs(v);
+ }
+ });
+ }
+ else if (typeof name === 'string') {
+ if (name in defs) {
+ return defs[name];
+ }
+ }
+ else if ('EPSG' in name) {
+ defs['EPSG:' + name.EPSG] = name;
+ }
+ else if ('ESRI' in name) {
+ defs['ESRI:' + name.ESRI] = name;
+ }
+ else if ('IAU2000' in name) {
+ defs['IAU2000:' + name.IAU2000] = name;
+ }
+ else {
+ console.log(name);
+ }
+ return;
+ }
+
+
+}
+globals(defs);
+module.exports = defs;
+
+},{"./global":34,"./projString":37,"./wkt":65}],32:[function(_dereq_,module,exports){
+var Datum = _dereq_('./constants/Datum');
+var Ellipsoid = _dereq_('./constants/Ellipsoid');
+var extend = _dereq_('./extend');
+var datum = _dereq_('./datum');
+var EPSLN = 1.0e-10;
+// ellipoid pj_set_ell.c
+var SIXTH = 0.1666666666666666667;
+/* 1/6 */
+var RA4 = 0.04722222222222222222;
+/* 17/360 */
+var RA6 = 0.02215608465608465608;
+module.exports = function(json) {
+ // DGR 2011-03-20 : nagrids -> nadgrids
+ if (json.datumCode && json.datumCode !== 'none') {
+ var datumDef = Datum[json.datumCode];
+ if (datumDef) {
+ json.datum_params = datumDef.towgs84 ? datumDef.towgs84.split(',') : null;
+ json.ellps = datumDef.ellipse;
+ json.datumName = datumDef.datumName ? datumDef.datumName : json.datumCode;
+ }
+ }
+ if (!json.a) { // do we have an ellipsoid?
+ var ellipse = Ellipsoid[json.ellps] ? Ellipsoid[json.ellps] : Ellipsoid.WGS84;
+ extend(json, ellipse);
+ }
+ if (json.rf && !json.b) {
+ json.b = (1.0 - 1.0 / json.rf) * json.a;
+ }
+ if (json.rf === 0 || Math.abs(json.a - json.b) < EPSLN) {
+ json.sphere = true;
+ json.b = json.a;
+ }
+ json.a2 = json.a * json.a; // used in geocentric
+ json.b2 = json.b * json.b; // used in geocentric
+ json.es = (json.a2 - json.b2) / json.a2; // e ^ 2
+ json.e = Math.sqrt(json.es); // eccentricity
+ if (json.R_A) {
+ json.a *= 1 - json.es * (SIXTH + json.es * (RA4 + json.es * RA6));
+ json.a2 = json.a * json.a;
+ json.b2 = json.b * json.b;
+ json.es = 0;
+ }
+ json.ep2 = (json.a2 - json.b2) / json.b2; // used in geocentric
+ if (!json.k0) {
+ json.k0 = 1.0; //default value
+ }
+ //DGR 2010-11-12: axis
+ if (!json.axis) {
+ json.axis = "enu";
+ }
+
+ if (!json.datum) {
+ json.datum = datum(json);
+ }
+ return json;
+};
+
+},{"./constants/Datum":25,"./constants/Ellipsoid":26,"./datum":29,"./extend":33}],33:[function(_dereq_,module,exports){
+module.exports = function(destination, source) {
+ destination = destination || {};
+ var value, property;
+ if (!source) {
+ return destination;
+ }
+ for (property in source) {
+ value = source[property];
+ if (value !== undefined) {
+ destination[property] = value;
+ }
+ }
+ return destination;
+};
+
+},{}],34:[function(_dereq_,module,exports){
+module.exports = function(defs) {
+ defs('EPSG:4326', "+title=WGS 84 (long/lat) +proj=longlat +ellps=WGS84 +datum=WGS84 +units=degrees");
+ defs('EPSG:4269', "+title=NAD83 (long/lat) +proj=longlat +a=6378137.0 +b=6356752.31414036 +ellps=GRS80 +datum=NAD83 +units=degrees");
+ defs('EPSG:3857', "+title=WGS 84 / Pseudo-Mercator +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs");
+
+ defs.WGS84 = defs['EPSG:4326'];
+ defs['EPSG:3785'] = defs['EPSG:3857']; // maintain backward compat, official code is 3857
+ defs.GOOGLE = defs['EPSG:3857'];
+ defs['EPSG:900913'] = defs['EPSG:3857'];
+ defs['EPSG:102113'] = defs['EPSG:3857'];
+};
+
+},{}],35:[function(_dereq_,module,exports){
+var proj4 = _dereq_('./core');
+proj4.defaultDatum = 'WGS84'; //default datum
+proj4.Proj = _dereq_('./Proj');
+proj4.WGS84 = new proj4.Proj('WGS84');
+proj4.Point = _dereq_('./Point');
+proj4.toPoint = _dereq_("./common/toPoint");
+proj4.defs = _dereq_('./defs');
+proj4.transform = _dereq_('./transform');
+proj4.mgrs = _dereq_('mgrs');
+proj4.version = _dereq_('../package.json').version;
+_dereq_('./includedProjections')(proj4);
+module.exports = proj4;
+},{"../package.json":67,"./Point":1,"./Proj":2,"./common/toPoint":23,"./core":28,"./defs":31,"./includedProjections":"gWUPNW","./transform":64,"mgrs":66}],36:[function(_dereq_,module,exports){
+var defs = _dereq_('./defs');
+var wkt = _dereq_('./wkt');
+var projStr = _dereq_('./projString');
+function testObj(code){
+ return typeof code === 'string';
+}
+function testDef(code){
+ return code in defs;
+}
+function testWKT(code){
+ var codeWords = ['GEOGCS','GEOCCS','PROJCS','LOCAL_CS'];
+ return codeWords.reduce(function(a,b){
+ return a+1+code.indexOf(b);
+ },0);
+}
+function testProj(code){
+ return code[0] === '+';
+}
+function parse(code){
+ if (testObj(code)) {
+ //check to see if this is a WKT string
+ if (testDef(code)) {
+ return defs[code];
+ }
+ else if (testWKT(code)) {
+ return wkt(code);
+ }
+ else if (testProj(code)) {
+ return projStr(code);
+ }
+ }else{
+ return code;
+ }
+}
+
+module.exports = parse;
+},{"./defs":31,"./projString":37,"./wkt":65}],37:[function(_dereq_,module,exports){
+var D2R = 0.01745329251994329577;
+var PrimeMeridian = _dereq_('./constants/PrimeMeridian');
+
+module.exports = function(defData) {
+ var self = {};
+ var paramObj = {};
+ defData.split("+").map(function(v) {
+ return v.trim();
+ }).filter(function(a) {
+ return a;
+ }).forEach(function(a) {
+ var split = a.split("=");
+ split.push(true);
+ paramObj[split[0].toLowerCase()] = split[1];
+ });
+ var paramName, paramVal, paramOutname;
+ var params = {
+ proj: 'projName',
+ datum: 'datumCode',
+ rf: function(v) {
+ self.rf = parseFloat(v);
+ },
+ lat_0: function(v) {
+ self.lat0 = v * D2R;
+ },
+ lat_1: function(v) {
+ self.lat1 = v * D2R;
+ },
+ lat_2: function(v) {
+ self.lat2 = v * D2R;
+ },
+ lat_ts: function(v) {
+ self.lat_ts = v * D2R;
+ },
+ lon_0: function(v) {
+ self.long0 = v * D2R;
+ },
+ lon_1: function(v) {
+ self.long1 = v * D2R;
+ },
+ lon_2: function(v) {
+ self.long2 = v * D2R;
+ },
+ alpha: function(v) {
+ self.alpha = parseFloat(v) * D2R;
+ },
+ lonc: function(v) {
+ self.longc = v * D2R;
+ },
+ x_0: function(v) {
+ self.x0 = parseFloat(v);
+ },
+ y_0: function(v) {
+ self.y0 = parseFloat(v);
+ },
+ k_0: function(v) {
+ self.k0 = parseFloat(v);
+ },
+ k: function(v) {
+ self.k0 = parseFloat(v);
+ },
+ a: function(v) {
+ self.a = parseFloat(v);
+ },
+ b: function(v) {
+ self.b = parseFloat(v);
+ },
+ r_a: function() {
+ self.R_A = true;
+ },
+ zone: function(v) {
+ self.zone = parseInt(v, 10);
+ },
+ south: function() {
+ self.utmSouth = true;
+ },
+ towgs84: function(v) {
+ self.datum_params = v.split(",").map(function(a) {
+ return parseFloat(a);
+ });
+ },
+ to_meter: function(v) {
+ self.to_meter = parseFloat(v);
+ },
+ from_greenwich: function(v) {
+ self.from_greenwich = v * D2R;
+ },
+ pm: function(v) {
+ self.from_greenwich = (PrimeMeridian[v] ? PrimeMeridian[v] : parseFloat(v)) * D2R;
+ },
+ nadgrids: function(v) {
+ if (v === '@null') {
+ self.datumCode = 'none';
+ }
+ else {
+ self.nadgrids = v;
+ }
+ },
+ axis: function(v) {
+ var legalAxis = "ewnsud";
+ if (v.length === 3 && legalAxis.indexOf(v.substr(0, 1)) !== -1 && legalAxis.indexOf(v.substr(1, 1)) !== -1 && legalAxis.indexOf(v.substr(2, 1)) !== -1) {
+ self.axis = v;
+ }
+ }
+ };
+ for (paramName in paramObj) {
+ paramVal = paramObj[paramName];
+ if (paramName in params) {
+ paramOutname = params[paramName];
+ if (typeof paramOutname === 'function') {
+ paramOutname(paramVal);
+ }
+ else {
+ self[paramOutname] = paramVal;
+ }
+ }
+ else {
+ self[paramName] = paramVal;
+ }
+ }
+ if(typeof self.datumCode === 'string' && self.datumCode !== "WGS84"){
+ self.datumCode = self.datumCode.toLowerCase();
+ }
+ return self;
+};
+
+},{"./constants/PrimeMeridian":27}],38:[function(_dereq_,module,exports){
+var projs = [
+ _dereq_('./projections/merc'),
+ _dereq_('./projections/longlat')
+];
+var names = {};
+var projStore = [];
+
+function add(proj, i) {
+ var len = projStore.length;
+ if (!proj.names) {
+ console.log(i);
+ return true;
+ }
+ projStore[len] = proj;
+ proj.names.forEach(function(n) {
+ names[n.toLowerCase()] = len;
+ });
+ return this;
+}
+
+exports.add = add;
+
+exports.get = function(name) {
+ if (!name) {
+ return false;
+ }
+ var n = name.toLowerCase();
+ if (typeof names[n] !== 'undefined' && projStore[names[n]]) {
+ return projStore[names[n]];
+ }
+};
+exports.start = function() {
+ projs.forEach(add);
+};
+
+},{"./projections/longlat":50,"./projections/merc":51}],39:[function(_dereq_,module,exports){
+var EPSLN = 1.0e-10;
+var msfnz = _dereq_('../common/msfnz');
+var qsfnz = _dereq_('../common/qsfnz');
+var adjust_lon = _dereq_('../common/adjust_lon');
+var asinz = _dereq_('../common/asinz');
+exports.init = function() {
+
+ if (Math.abs(this.lat1 + this.lat2) < EPSLN) {
+ return;
+ }
+ this.temp = this.b / this.a;
+ this.es = 1 - Math.pow(this.temp, 2);
+ this.e3 = Math.sqrt(this.es);
+
+ this.sin_po = Math.sin(this.lat1);
+ this.cos_po = Math.cos(this.lat1);
+ this.t1 = this.sin_po;
+ this.con = this.sin_po;
+ this.ms1 = msfnz(this.e3, this.sin_po, this.cos_po);
+ this.qs1 = qsfnz(this.e3, this.sin_po, this.cos_po);
+
+ this.sin_po = Math.sin(this.lat2);
+ this.cos_po = Math.cos(this.lat2);
+ this.t2 = this.sin_po;
+ this.ms2 = msfnz(this.e3, this.sin_po, this.cos_po);
+ this.qs2 = qsfnz(this.e3, this.sin_po, this.cos_po);
+
+ this.sin_po = Math.sin(this.lat0);
+ this.cos_po = Math.cos(this.lat0);
+ this.t3 = this.sin_po;
+ this.qs0 = qsfnz(this.e3, this.sin_po, this.cos_po);
+
+ if (Math.abs(this.lat1 - this.lat2) > EPSLN) {
+ this.ns0 = (this.ms1 * this.ms1 - this.ms2 * this.ms2) / (this.qs2 - this.qs1);
+ }
+ else {
+ this.ns0 = this.con;
+ }
+ this.c = this.ms1 * this.ms1 + this.ns0 * this.qs1;
+ this.rh = this.a * Math.sqrt(this.c - this.ns0 * this.qs0) / this.ns0;
+};
+
+/* Albers Conical Equal Area forward equations--mapping lat,long to x,y
+ -------------------------------------------------------------------*/
+exports.forward = function(p) {
+
+ var lon = p.x;
+ var lat = p.y;
+
+ this.sin_phi = Math.sin(lat);
+ this.cos_phi = Math.cos(lat);
+
+ var qs = qsfnz(this.e3, this.sin_phi, this.cos_phi);
+ var rh1 = this.a * Math.sqrt(this.c - this.ns0 * qs) / this.ns0;
+ var theta = this.ns0 * adjust_lon(lon - this.long0);
+ var x = rh1 * Math.sin(theta) + this.x0;
+ var y = this.rh - rh1 * Math.cos(theta) + this.y0;
+
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+
+exports.inverse = function(p) {
+ var rh1, qs, con, theta, lon, lat;
+
+ p.x -= this.x0;
+ p.y = this.rh - p.y + this.y0;
+ if (this.ns0 >= 0) {
+ rh1 = Math.sqrt(p.x * p.x + p.y * p.y);
+ con = 1;
+ }
+ else {
+ rh1 = -Math.sqrt(p.x * p.x + p.y * p.y);
+ con = -1;
+ }
+ theta = 0;
+ if (rh1 !== 0) {
+ theta = Math.atan2(con * p.x, con * p.y);
+ }
+ con = rh1 * this.ns0 / this.a;
+ if (this.sphere) {
+ lat = Math.asin((this.c - con * con) / (2 * this.ns0));
+ }
+ else {
+ qs = (this.c - con * con) / this.ns0;
+ lat = this.phi1z(this.e3, qs);
+ }
+
+ lon = adjust_lon(theta / this.ns0 + this.long0);
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+
+/* Function to compute phi1, the latitude for the inverse of the
+ Albers Conical Equal-Area projection.
+-------------------------------------------*/
+exports.phi1z = function(eccent, qs) {
+ var sinphi, cosphi, con, com, dphi;
+ var phi = asinz(0.5 * qs);
+ if (eccent < EPSLN) {
+ return phi;
+ }
+
+ var eccnts = eccent * eccent;
+ for (var i = 1; i <= 25; i++) {
+ sinphi = Math.sin(phi);
+ cosphi = Math.cos(phi);
+ con = eccent * sinphi;
+ com = 1 - con * con;
+ dphi = 0.5 * com * com / cosphi * (qs / (1 - eccnts) - sinphi / com + 0.5 / eccent * Math.log((1 - con) / (1 + con)));
+ phi = phi + dphi;
+ if (Math.abs(dphi) <= 1e-7) {
+ return phi;
+ }
+ }
+ return null;
+};
+exports.names = ["Albers_Conic_Equal_Area", "Albers", "aea"];
+
+},{"../common/adjust_lon":5,"../common/asinz":6,"../common/msfnz":15,"../common/qsfnz":20}],40:[function(_dereq_,module,exports){
+var adjust_lon = _dereq_('../common/adjust_lon');
+var HALF_PI = Math.PI/2;
+var EPSLN = 1.0e-10;
+var mlfn = _dereq_('../common/mlfn');
+var e0fn = _dereq_('../common/e0fn');
+var e1fn = _dereq_('../common/e1fn');
+var e2fn = _dereq_('../common/e2fn');
+var e3fn = _dereq_('../common/e3fn');
+var gN = _dereq_('../common/gN');
+var asinz = _dereq_('../common/asinz');
+var imlfn = _dereq_('../common/imlfn');
+exports.init = function() {
+ this.sin_p12 = Math.sin(this.lat0);
+ this.cos_p12 = Math.cos(this.lat0);
+};
+
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+ var sinphi = Math.sin(p.y);
+ var cosphi = Math.cos(p.y);
+ var dlon = adjust_lon(lon - this.long0);
+ var e0, e1, e2, e3, Mlp, Ml, tanphi, Nl1, Nl, psi, Az, G, H, GH, Hs, c, kp, cos_c, s, s2, s3, s4, s5;
+ if (this.sphere) {
+ if (Math.abs(this.sin_p12 - 1) <= EPSLN) {
+ //North Pole case
+ p.x = this.x0 + this.a * (HALF_PI - lat) * Math.sin(dlon);
+ p.y = this.y0 - this.a * (HALF_PI - lat) * Math.cos(dlon);
+ return p;
+ }
+ else if (Math.abs(this.sin_p12 + 1) <= EPSLN) {
+ //South Pole case
+ p.x = this.x0 + this.a * (HALF_PI + lat) * Math.sin(dlon);
+ p.y = this.y0 + this.a * (HALF_PI + lat) * Math.cos(dlon);
+ return p;
+ }
+ else {
+ //default case
+ cos_c = this.sin_p12 * sinphi + this.cos_p12 * cosphi * Math.cos(dlon);
+ c = Math.acos(cos_c);
+ kp = c / Math.sin(c);
+ p.x = this.x0 + this.a * kp * cosphi * Math.sin(dlon);
+ p.y = this.y0 + this.a * kp * (this.cos_p12 * sinphi - this.sin_p12 * cosphi * Math.cos(dlon));
+ return p;
+ }
+ }
+ else {
+ e0 = e0fn(this.es);
+ e1 = e1fn(this.es);
+ e2 = e2fn(this.es);
+ e3 = e3fn(this.es);
+ if (Math.abs(this.sin_p12 - 1) <= EPSLN) {
+ //North Pole case
+ Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI);
+ Ml = this.a * mlfn(e0, e1, e2, e3, lat);
+ p.x = this.x0 + (Mlp - Ml) * Math.sin(dlon);
+ p.y = this.y0 - (Mlp - Ml) * Math.cos(dlon);
+ return p;
+ }
+ else if (Math.abs(this.sin_p12 + 1) <= EPSLN) {
+ //South Pole case
+ Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI);
+ Ml = this.a * mlfn(e0, e1, e2, e3, lat);
+ p.x = this.x0 + (Mlp + Ml) * Math.sin(dlon);
+ p.y = this.y0 + (Mlp + Ml) * Math.cos(dlon);
+ return p;
+ }
+ else {
+ //Default case
+ tanphi = sinphi / cosphi;
+ Nl1 = gN(this.a, this.e, this.sin_p12);
+ Nl = gN(this.a, this.e, sinphi);
+ psi = Math.atan((1 - this.es) * tanphi + this.es * Nl1 * this.sin_p12 / (Nl * cosphi));
+ Az = Math.atan2(Math.sin(dlon), this.cos_p12 * Math.tan(psi) - this.sin_p12 * Math.cos(dlon));
+ if (Az === 0) {
+ s = Math.asin(this.cos_p12 * Math.sin(psi) - this.sin_p12 * Math.cos(psi));
+ }
+ else if (Math.abs(Math.abs(Az) - Math.PI) <= EPSLN) {
+ s = -Math.asin(this.cos_p12 * Math.sin(psi) - this.sin_p12 * Math.cos(psi));
+ }
+ else {
+ s = Math.asin(Math.sin(dlon) * Math.cos(psi) / Math.sin(Az));
+ }
+ G = this.e * this.sin_p12 / Math.sqrt(1 - this.es);
+ H = this.e * this.cos_p12 * Math.cos(Az) / Math.sqrt(1 - this.es);
+ GH = G * H;
+ Hs = H * H;
+ s2 = s * s;
+ s3 = s2 * s;
+ s4 = s3 * s;
+ s5 = s4 * s;
+ c = Nl1 * s * (1 - s2 * Hs * (1 - Hs) / 6 + s3 / 8 * GH * (1 - 2 * Hs) + s4 / 120 * (Hs * (4 - 7 * Hs) - 3 * G * G * (1 - 7 * Hs)) - s5 / 48 * GH);
+ p.x = this.x0 + c * Math.sin(Az);
+ p.y = this.y0 + c * Math.cos(Az);
+ return p;
+ }
+ }
+
+
+};
+
+exports.inverse = function(p) {
+ p.x -= this.x0;
+ p.y -= this.y0;
+ var rh, z, sinz, cosz, lon, lat, con, e0, e1, e2, e3, Mlp, M, N1, psi, Az, cosAz, tmp, A, B, D, Ee, F;
+ if (this.sphere) {
+ rh = Math.sqrt(p.x * p.x + p.y * p.y);
+ if (rh > (2 * HALF_PI * this.a)) {
+ return;
+ }
+ z = rh / this.a;
+
+ sinz = Math.sin(z);
+ cosz = Math.cos(z);
+
+ lon = this.long0;
+ if (Math.abs(rh) <= EPSLN) {
+ lat = this.lat0;
+ }
+ else {
+ lat = asinz(cosz * this.sin_p12 + (p.y * sinz * this.cos_p12) / rh);
+ con = Math.abs(this.lat0) - HALF_PI;
+ if (Math.abs(con) <= EPSLN) {
+ if (this.lat0 >= 0) {
+ lon = adjust_lon(this.long0 + Math.atan2(p.x, - p.y));
+ }
+ else {
+ lon = adjust_lon(this.long0 - Math.atan2(-p.x, p.y));
+ }
+ }
+ else {
+ /*con = cosz - this.sin_p12 * Math.sin(lat);
+ if ((Math.abs(con) < EPSLN) && (Math.abs(p.x) < EPSLN)) {
+ //no-op, just keep the lon value as is
+ } else {
+ var temp = Math.atan2((p.x * sinz * this.cos_p12), (con * rh));
+ lon = adjust_lon(this.long0 + Math.atan2((p.x * sinz * this.cos_p12), (con * rh)));
+ }*/
+ lon = adjust_lon(this.long0 + Math.atan2(p.x * sinz, rh * this.cos_p12 * cosz - p.y * this.sin_p12 * sinz));
+ }
+ }
+
+ p.x = lon;
+ p.y = lat;
+ return p;
+ }
+ else {
+ e0 = e0fn(this.es);
+ e1 = e1fn(this.es);
+ e2 = e2fn(this.es);
+ e3 = e3fn(this.es);
+ if (Math.abs(this.sin_p12 - 1) <= EPSLN) {
+ //North pole case
+ Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI);
+ rh = Math.sqrt(p.x * p.x + p.y * p.y);
+ M = Mlp - rh;
+ lat = imlfn(M / this.a, e0, e1, e2, e3);
+ lon = adjust_lon(this.long0 + Math.atan2(p.x, - 1 * p.y));
+ p.x = lon;
+ p.y = lat;
+ return p;
+ }
+ else if (Math.abs(this.sin_p12 + 1) <= EPSLN) {
+ //South pole case
+ Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI);
+ rh = Math.sqrt(p.x * p.x + p.y * p.y);
+ M = rh - Mlp;
+
+ lat = imlfn(M / this.a, e0, e1, e2, e3);
+ lon = adjust_lon(this.long0 + Math.atan2(p.x, p.y));
+ p.x = lon;
+ p.y = lat;
+ return p;
+ }
+ else {
+ //default case
+ rh = Math.sqrt(p.x * p.x + p.y * p.y);
+ Az = Math.atan2(p.x, p.y);
+ N1 = gN(this.a, this.e, this.sin_p12);
+ cosAz = Math.cos(Az);
+ tmp = this.e * this.cos_p12 * cosAz;
+ A = -tmp * tmp / (1 - this.es);
+ B = 3 * this.es * (1 - A) * this.sin_p12 * this.cos_p12 * cosAz / (1 - this.es);
+ D = rh / N1;
+ Ee = D - A * (1 + A) * Math.pow(D, 3) / 6 - B * (1 + 3 * A) * Math.pow(D, 4) / 24;
+ F = 1 - A * Ee * Ee / 2 - D * Ee * Ee * Ee / 6;
+ psi = Math.asin(this.sin_p12 * Math.cos(Ee) + this.cos_p12 * Math.sin(Ee) * cosAz);
+ lon = adjust_lon(this.long0 + Math.asin(Math.sin(Az) * Math.sin(Ee) / Math.cos(psi)));
+ lat = Math.atan((1 - this.es * F * this.sin_p12 / Math.sin(psi)) * Math.tan(psi) / (1 - this.es));
+ p.x = lon;
+ p.y = lat;
+ return p;
+ }
+ }
+
+};
+exports.names = ["Azimuthal_Equidistant", "aeqd"];
+
+},{"../common/adjust_lon":5,"../common/asinz":6,"../common/e0fn":7,"../common/e1fn":8,"../common/e2fn":9,"../common/e3fn":10,"../common/gN":11,"../common/imlfn":12,"../common/mlfn":14}],41:[function(_dereq_,module,exports){
+var mlfn = _dereq_('../common/mlfn');
+var e0fn = _dereq_('../common/e0fn');
+var e1fn = _dereq_('../common/e1fn');
+var e2fn = _dereq_('../common/e2fn');
+var e3fn = _dereq_('../common/e3fn');
+var gN = _dereq_('../common/gN');
+var adjust_lon = _dereq_('../common/adjust_lon');
+var adjust_lat = _dereq_('../common/adjust_lat');
+var imlfn = _dereq_('../common/imlfn');
+var HALF_PI = Math.PI/2;
+var EPSLN = 1.0e-10;
+exports.init = function() {
+ if (!this.sphere) {
+ this.e0 = e0fn(this.es);
+ this.e1 = e1fn(this.es);
+ this.e2 = e2fn(this.es);
+ this.e3 = e3fn(this.es);
+ this.ml0 = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, this.lat0);
+ }
+};
+
+
+
+/* Cassini forward equations--mapping lat,long to x,y
+ -----------------------------------------------------------------------*/
+exports.forward = function(p) {
+
+ /* Forward equations
+ -----------------*/
+ var x, y;
+ var lam = p.x;
+ var phi = p.y;
+ lam = adjust_lon(lam - this.long0);
+
+ if (this.sphere) {
+ x = this.a * Math.asin(Math.cos(phi) * Math.sin(lam));
+ y = this.a * (Math.atan2(Math.tan(phi), Math.cos(lam)) - this.lat0);
+ }
+ else {
+ //ellipsoid
+ var sinphi = Math.sin(phi);
+ var cosphi = Math.cos(phi);
+ var nl = gN(this.a, this.e, sinphi);
+ var tl = Math.tan(phi) * Math.tan(phi);
+ var al = lam * Math.cos(phi);
+ var asq = al * al;
+ var cl = this.es * cosphi * cosphi / (1 - this.es);
+ var ml = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, phi);
+
+ x = nl * al * (1 - asq * tl * (1 / 6 - (8 - tl + 8 * cl) * asq / 120));
+ y = ml - this.ml0 + nl * sinphi / cosphi * asq * (0.5 + (5 - tl + 6 * cl) * asq / 24);
+
+
+ }
+
+ p.x = x + this.x0;
+ p.y = y + this.y0;
+ return p;
+};
+
+/* Inverse equations
+ -----------------*/
+exports.inverse = function(p) {
+ p.x -= this.x0;
+ p.y -= this.y0;
+ var x = p.x / this.a;
+ var y = p.y / this.a;
+ var phi, lam;
+
+ if (this.sphere) {
+ var dd = y + this.lat0;
+ phi = Math.asin(Math.sin(dd) * Math.cos(x));
+ lam = Math.atan2(Math.tan(x), Math.cos(dd));
+ }
+ else {
+ /* ellipsoid */
+ var ml1 = this.ml0 / this.a + y;
+ var phi1 = imlfn(ml1, this.e0, this.e1, this.e2, this.e3);
+ if (Math.abs(Math.abs(phi1) - HALF_PI) <= EPSLN) {
+ p.x = this.long0;
+ p.y = HALF_PI;
+ if (y < 0) {
+ p.y *= -1;
+ }
+ return p;
+ }
+ var nl1 = gN(this.a, this.e, Math.sin(phi1));
+
+ var rl1 = nl1 * nl1 * nl1 / this.a / this.a * (1 - this.es);
+ var tl1 = Math.pow(Math.tan(phi1), 2);
+ var dl = x * this.a / nl1;
+ var dsq = dl * dl;
+ phi = phi1 - nl1 * Math.tan(phi1) / rl1 * dl * dl * (0.5 - (1 + 3 * tl1) * dl * dl / 24);
+ lam = dl * (1 - dsq * (tl1 / 3 + (1 + 3 * tl1) * tl1 * dsq / 15)) / Math.cos(phi1);
+
+ }
+
+ p.x = adjust_lon(lam + this.long0);
+ p.y = adjust_lat(phi);
+ return p;
+
+};
+exports.names = ["Cassini", "Cassini_Soldner", "cass"];
+},{"../common/adjust_lat":4,"../common/adjust_lon":5,"../common/e0fn":7,"../common/e1fn":8,"../common/e2fn":9,"../common/e3fn":10,"../common/gN":11,"../common/imlfn":12,"../common/mlfn":14}],42:[function(_dereq_,module,exports){
+var adjust_lon = _dereq_('../common/adjust_lon');
+var qsfnz = _dereq_('../common/qsfnz');
+var msfnz = _dereq_('../common/msfnz');
+var iqsfnz = _dereq_('../common/iqsfnz');
+/*
+ reference:
+ "Cartographic Projection Procedures for the UNIX Environment-
+ A User's Manual" by Gerald I. Evenden,
+ USGS Open File Report 90-284and Release 4 Interim Reports (2003)
+*/
+exports.init = function() {
+ //no-op
+ if (!this.sphere) {
+ this.k0 = msfnz(this.e, Math.sin(this.lat_ts), Math.cos(this.lat_ts));
+ }
+};
+
+
+/* Cylindrical Equal Area forward equations--mapping lat,long to x,y
+ ------------------------------------------------------------*/
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+ var x, y;
+ /* Forward equations
+ -----------------*/
+ var dlon = adjust_lon(lon - this.long0);
+ if (this.sphere) {
+ x = this.x0 + this.a * dlon * Math.cos(this.lat_ts);
+ y = this.y0 + this.a * Math.sin(lat) / Math.cos(this.lat_ts);
+ }
+ else {
+ var qs = qsfnz(this.e, Math.sin(lat));
+ x = this.x0 + this.a * this.k0 * dlon;
+ y = this.y0 + this.a * qs * 0.5 / this.k0;
+ }
+
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+/* Cylindrical Equal Area inverse equations--mapping x,y to lat/long
+ ------------------------------------------------------------*/
+exports.inverse = function(p) {
+ p.x -= this.x0;
+ p.y -= this.y0;
+ var lon, lat;
+
+ if (this.sphere) {
+ lon = adjust_lon(this.long0 + (p.x / this.a) / Math.cos(this.lat_ts));
+ lat = Math.asin((p.y / this.a) * Math.cos(this.lat_ts));
+ }
+ else {
+ lat = iqsfnz(this.e, 2 * p.y * this.k0 / this.a);
+ lon = adjust_lon(this.long0 + p.x / (this.a * this.k0));
+ }
+
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["cea"];
+
+},{"../common/adjust_lon":5,"../common/iqsfnz":13,"../common/msfnz":15,"../common/qsfnz":20}],43:[function(_dereq_,module,exports){
+var adjust_lon = _dereq_('../common/adjust_lon');
+var adjust_lat = _dereq_('../common/adjust_lat');
+exports.init = function() {
+
+ this.x0 = this.x0 || 0;
+ this.y0 = this.y0 || 0;
+ this.lat0 = this.lat0 || 0;
+ this.long0 = this.long0 || 0;
+ this.lat_ts = this.lat_ts || 0;
+ this.title = this.title || "Equidistant Cylindrical (Plate Carre)";
+
+ this.rc = Math.cos(this.lat_ts);
+};
+
+
+// forward equations--mapping lat,long to x,y
+// -----------------------------------------------------------------
+exports.forward = function(p) {
+
+ var lon = p.x;
+ var lat = p.y;
+
+ var dlon = adjust_lon(lon - this.long0);
+ var dlat = adjust_lat(lat - this.lat0);
+ p.x = this.x0 + (this.a * dlon * this.rc);
+ p.y = this.y0 + (this.a * dlat);
+ return p;
+};
+
+// inverse equations--mapping x,y to lat/long
+// -----------------------------------------------------------------
+exports.inverse = function(p) {
+
+ var x = p.x;
+ var y = p.y;
+
+ p.x = adjust_lon(this.long0 + ((x - this.x0) / (this.a * this.rc)));
+ p.y = adjust_lat(this.lat0 + ((y - this.y0) / (this.a)));
+ return p;
+};
+exports.names = ["Equirectangular", "Equidistant_Cylindrical", "eqc"];
+
+},{"../common/adjust_lat":4,"../common/adjust_lon":5}],44:[function(_dereq_,module,exports){
+var e0fn = _dereq_('../common/e0fn');
+var e1fn = _dereq_('../common/e1fn');
+var e2fn = _dereq_('../common/e2fn');
+var e3fn = _dereq_('../common/e3fn');
+var msfnz = _dereq_('../common/msfnz');
+var mlfn = _dereq_('../common/mlfn');
+var adjust_lon = _dereq_('../common/adjust_lon');
+var adjust_lat = _dereq_('../common/adjust_lat');
+var imlfn = _dereq_('../common/imlfn');
+var EPSLN = 1.0e-10;
+exports.init = function() {
+
+ /* Place parameters in static storage for common use
+ -------------------------------------------------*/
+ // Standard Parallels cannot be equal and on opposite sides of the equator
+ if (Math.abs(this.lat1 + this.lat2) < EPSLN) {
+ return;
+ }
+ this.lat2 = this.lat2 || this.lat1;
+ this.temp = this.b / this.a;
+ this.es = 1 - Math.pow(this.temp, 2);
+ this.e = Math.sqrt(this.es);
+ this.e0 = e0fn(this.es);
+ this.e1 = e1fn(this.es);
+ this.e2 = e2fn(this.es);
+ this.e3 = e3fn(this.es);
+
+ this.sinphi = Math.sin(this.lat1);
+ this.cosphi = Math.cos(this.lat1);
+
+ this.ms1 = msfnz(this.e, this.sinphi, this.cosphi);
+ this.ml1 = mlfn(this.e0, this.e1, this.e2, this.e3, this.lat1);
+
+ if (Math.abs(this.lat1 - this.lat2) < EPSLN) {
+ this.ns = this.sinphi;
+ }
+ else {
+ this.sinphi = Math.sin(this.lat2);
+ this.cosphi = Math.cos(this.lat2);
+ this.ms2 = msfnz(this.e, this.sinphi, this.cosphi);
+ this.ml2 = mlfn(this.e0, this.e1, this.e2, this.e3, this.lat2);
+ this.ns = (this.ms1 - this.ms2) / (this.ml2 - this.ml1);
+ }
+ this.g = this.ml1 + this.ms1 / this.ns;
+ this.ml0 = mlfn(this.e0, this.e1, this.e2, this.e3, this.lat0);
+ this.rh = this.a * (this.g - this.ml0);
+};
+
+
+/* Equidistant Conic forward equations--mapping lat,long to x,y
+ -----------------------------------------------------------*/
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+ var rh1;
+
+ /* Forward equations
+ -----------------*/
+ if (this.sphere) {
+ rh1 = this.a * (this.g - lat);
+ }
+ else {
+ var ml = mlfn(this.e0, this.e1, this.e2, this.e3, lat);
+ rh1 = this.a * (this.g - ml);
+ }
+ var theta = this.ns * adjust_lon(lon - this.long0);
+ var x = this.x0 + rh1 * Math.sin(theta);
+ var y = this.y0 + this.rh - rh1 * Math.cos(theta);
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+/* Inverse equations
+ -----------------*/
+exports.inverse = function(p) {
+ p.x -= this.x0;
+ p.y = this.rh - p.y + this.y0;
+ var con, rh1, lat, lon;
+ if (this.ns >= 0) {
+ rh1 = Math.sqrt(p.x * p.x + p.y * p.y);
+ con = 1;
+ }
+ else {
+ rh1 = -Math.sqrt(p.x * p.x + p.y * p.y);
+ con = -1;
+ }
+ var theta = 0;
+ if (rh1 !== 0) {
+ theta = Math.atan2(con * p.x, con * p.y);
+ }
+
+ if (this.sphere) {
+ lon = adjust_lon(this.long0 + theta / this.ns);
+ lat = adjust_lat(this.g - rh1 / this.a);
+ p.x = lon;
+ p.y = lat;
+ return p;
+ }
+ else {
+ var ml = this.g - rh1 / this.a;
+ lat = imlfn(ml, this.e0, this.e1, this.e2, this.e3);
+ lon = adjust_lon(this.long0 + theta / this.ns);
+ p.x = lon;
+ p.y = lat;
+ return p;
+ }
+
+};
+exports.names = ["Equidistant_Conic", "eqdc"];
+
+},{"../common/adjust_lat":4,"../common/adjust_lon":5,"../common/e0fn":7,"../common/e1fn":8,"../common/e2fn":9,"../common/e3fn":10,"../common/imlfn":12,"../common/mlfn":14,"../common/msfnz":15}],45:[function(_dereq_,module,exports){
+var FORTPI = Math.PI/4;
+var srat = _dereq_('../common/srat');
+var HALF_PI = Math.PI/2;
+var MAX_ITER = 20;
+exports.init = function() {
+ var sphi = Math.sin(this.lat0);
+ var cphi = Math.cos(this.lat0);
+ cphi *= cphi;
+ this.rc = Math.sqrt(1 - this.es) / (1 - this.es * sphi * sphi);
+ this.C = Math.sqrt(1 + this.es * cphi * cphi / (1 - this.es));
+ this.phic0 = Math.asin(sphi / this.C);
+ this.ratexp = 0.5 * this.C * this.e;
+ this.K = Math.tan(0.5 * this.phic0 + FORTPI) / (Math.pow(Math.tan(0.5 * this.lat0 + FORTPI), this.C) * srat(this.e * sphi, this.ratexp));
+};
+
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+
+ p.y = 2 * Math.atan(this.K * Math.pow(Math.tan(0.5 * lat + FORTPI), this.C) * srat(this.e * Math.sin(lat), this.ratexp)) - HALF_PI;
+ p.x = this.C * lon;
+ return p;
+};
+
+exports.inverse = function(p) {
+ var DEL_TOL = 1e-14;
+ var lon = p.x / this.C;
+ var lat = p.y;
+ var num = Math.pow(Math.tan(0.5 * lat + FORTPI) / this.K, 1 / this.C);
+ for (var i = MAX_ITER; i > 0; --i) {
+ lat = 2 * Math.atan(num * srat(this.e * Math.sin(p.y), - 0.5 * this.e)) - HALF_PI;
+ if (Math.abs(lat - p.y) < DEL_TOL) {
+ break;
+ }
+ p.y = lat;
+ }
+ /* convergence failed */
+ if (!i) {
+ return null;
+ }
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["gauss"];
+
+},{"../common/srat":22}],46:[function(_dereq_,module,exports){
+var adjust_lon = _dereq_('../common/adjust_lon');
+var EPSLN = 1.0e-10;
+var asinz = _dereq_('../common/asinz');
+
+/*
+ reference:
+ Wolfram Mathworld "Gnomonic Projection"
+ http://mathworld.wolfram.com/GnomonicProjection.html
+ Accessed: 12th November 2009
+ */
+exports.init = function() {
+
+ /* Place parameters in static storage for common use
+ -------------------------------------------------*/
+ this.sin_p14 = Math.sin(this.lat0);
+ this.cos_p14 = Math.cos(this.lat0);
+ // Approximation for projecting points to the horizon (infinity)
+ this.infinity_dist = 1000 * this.a;
+ this.rc = 1;
+};
+
+
+/* Gnomonic forward equations--mapping lat,long to x,y
+ ---------------------------------------------------*/
+exports.forward = function(p) {
+ var sinphi, cosphi; /* sin and cos value */
+ var dlon; /* delta longitude value */
+ var coslon; /* cos of longitude */
+ var ksp; /* scale factor */
+ var g;
+ var x, y;
+ var lon = p.x;
+ var lat = p.y;
+ /* Forward equations
+ -----------------*/
+ dlon = adjust_lon(lon - this.long0);
+
+ sinphi = Math.sin(lat);
+ cosphi = Math.cos(lat);
+
+ coslon = Math.cos(dlon);
+ g = this.sin_p14 * sinphi + this.cos_p14 * cosphi * coslon;
+ ksp = 1;
+ if ((g > 0) || (Math.abs(g) <= EPSLN)) {
+ x = this.x0 + this.a * ksp * cosphi * Math.sin(dlon) / g;
+ y = this.y0 + this.a * ksp * (this.cos_p14 * sinphi - this.sin_p14 * cosphi * coslon) / g;
+ }
+ else {
+
+ // Point is in the opposing hemisphere and is unprojectable
+ // We still need to return a reasonable point, so we project
+ // to infinity, on a bearing
+ // equivalent to the northern hemisphere equivalent
+ // This is a reasonable approximation for short shapes and lines that
+ // straddle the horizon.
+
+ x = this.x0 + this.infinity_dist * cosphi * Math.sin(dlon);
+ y = this.y0 + this.infinity_dist * (this.cos_p14 * sinphi - this.sin_p14 * cosphi * coslon);
+
+ }
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+
+exports.inverse = function(p) {
+ var rh; /* Rho */
+ var sinc, cosc;
+ var c;
+ var lon, lat;
+
+ /* Inverse equations
+ -----------------*/
+ p.x = (p.x - this.x0) / this.a;
+ p.y = (p.y - this.y0) / this.a;
+
+ p.x /= this.k0;
+ p.y /= this.k0;
+
+ if ((rh = Math.sqrt(p.x * p.x + p.y * p.y))) {
+ c = Math.atan2(rh, this.rc);
+ sinc = Math.sin(c);
+ cosc = Math.cos(c);
+
+ lat = asinz(cosc * this.sin_p14 + (p.y * sinc * this.cos_p14) / rh);
+ lon = Math.atan2(p.x * sinc, rh * this.cos_p14 * cosc - p.y * this.sin_p14 * sinc);
+ lon = adjust_lon(this.long0 + lon);
+ }
+ else {
+ lat = this.phic0;
+ lon = 0;
+ }
+
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["gnom"];
+
+},{"../common/adjust_lon":5,"../common/asinz":6}],47:[function(_dereq_,module,exports){
+var adjust_lon = _dereq_('../common/adjust_lon');
+exports.init = function() {
+ this.a = 6377397.155;
+ this.es = 0.006674372230614;
+ this.e = Math.sqrt(this.es);
+ if (!this.lat0) {
+ this.lat0 = 0.863937979737193;
+ }
+ if (!this.long0) {
+ this.long0 = 0.7417649320975901 - 0.308341501185665;
+ }
+ /* if scale not set default to 0.9999 */
+ if (!this.k0) {
+ this.k0 = 0.9999;
+ }
+ this.s45 = 0.785398163397448; /* 45 */
+ this.s90 = 2 * this.s45;
+ this.fi0 = this.lat0;
+ this.e2 = this.es;
+ this.e = Math.sqrt(this.e2);
+ this.alfa = Math.sqrt(1 + (this.e2 * Math.pow(Math.cos(this.fi0), 4)) / (1 - this.e2));
+ this.uq = 1.04216856380474;
+ this.u0 = Math.asin(Math.sin(this.fi0) / this.alfa);
+ this.g = Math.pow((1 + this.e * Math.sin(this.fi0)) / (1 - this.e * Math.sin(this.fi0)), this.alfa * this.e / 2);
+ this.k = Math.tan(this.u0 / 2 + this.s45) / Math.pow(Math.tan(this.fi0 / 2 + this.s45), this.alfa) * this.g;
+ this.k1 = this.k0;
+ this.n0 = this.a * Math.sqrt(1 - this.e2) / (1 - this.e2 * Math.pow(Math.sin(this.fi0), 2));
+ this.s0 = 1.37008346281555;
+ this.n = Math.sin(this.s0);
+ this.ro0 = this.k1 * this.n0 / Math.tan(this.s0);
+ this.ad = this.s90 - this.uq;
+};
+
+/* ellipsoid */
+/* calculate xy from lat/lon */
+/* Constants, identical to inverse transform function */
+exports.forward = function(p) {
+ var gfi, u, deltav, s, d, eps, ro;
+ var lon = p.x;
+ var lat = p.y;
+ var delta_lon = adjust_lon(lon - this.long0);
+ /* Transformation */
+ gfi = Math.pow(((1 + this.e * Math.sin(lat)) / (1 - this.e * Math.sin(lat))), (this.alfa * this.e / 2));
+ u = 2 * (Math.atan(this.k * Math.pow(Math.tan(lat / 2 + this.s45), this.alfa) / gfi) - this.s45);
+ deltav = -delta_lon * this.alfa;
+ s = Math.asin(Math.cos(this.ad) * Math.sin(u) + Math.sin(this.ad) * Math.cos(u) * Math.cos(deltav));
+ d = Math.asin(Math.cos(u) * Math.sin(deltav) / Math.cos(s));
+ eps = this.n * d;
+ ro = this.ro0 * Math.pow(Math.tan(this.s0 / 2 + this.s45), this.n) / Math.pow(Math.tan(s / 2 + this.s45), this.n);
+ p.y = ro * Math.cos(eps) / 1;
+ p.x = ro * Math.sin(eps) / 1;
+
+ if (!this.czech) {
+ p.y *= -1;
+ p.x *= -1;
+ }
+ return (p);
+};
+
+/* calculate lat/lon from xy */
+exports.inverse = function(p) {
+ var u, deltav, s, d, eps, ro, fi1;
+ var ok;
+
+ /* Transformation */
+ /* revert y, x*/
+ var tmp = p.x;
+ p.x = p.y;
+ p.y = tmp;
+ if (!this.czech) {
+ p.y *= -1;
+ p.x *= -1;
+ }
+ ro = Math.sqrt(p.x * p.x + p.y * p.y);
+ eps = Math.atan2(p.y, p.x);
+ d = eps / Math.sin(this.s0);
+ s = 2 * (Math.atan(Math.pow(this.ro0 / ro, 1 / this.n) * Math.tan(this.s0 / 2 + this.s45)) - this.s45);
+ u = Math.asin(Math.cos(this.ad) * Math.sin(s) - Math.sin(this.ad) * Math.cos(s) * Math.cos(d));
+ deltav = Math.asin(Math.cos(s) * Math.sin(d) / Math.cos(u));
+ p.x = this.long0 - deltav / this.alfa;
+ fi1 = u;
+ ok = 0;
+ var iter = 0;
+ do {
+ p.y = 2 * (Math.atan(Math.pow(this.k, - 1 / this.alfa) * Math.pow(Math.tan(u / 2 + this.s45), 1 / this.alfa) * Math.pow((1 + this.e * Math.sin(fi1)) / (1 - this.e * Math.sin(fi1)), this.e / 2)) - this.s45);
+ if (Math.abs(fi1 - p.y) < 0.0000000001) {
+ ok = 1;
+ }
+ fi1 = p.y;
+ iter += 1;
+ } while (ok === 0 && iter < 15);
+ if (iter >= 15) {
+ return null;
+ }
+
+ return (p);
+};
+exports.names = ["Krovak", "krovak"];
+
+},{"../common/adjust_lon":5}],48:[function(_dereq_,module,exports){
+var HALF_PI = Math.PI/2;
+var FORTPI = Math.PI/4;
+var EPSLN = 1.0e-10;
+var qsfnz = _dereq_('../common/qsfnz');
+var adjust_lon = _dereq_('../common/adjust_lon');
+/*
+ reference
+ "New Equal-Area Map Projections for Noncircular Regions", John P. Snyder,
+ The American Cartographer, Vol 15, No. 4, October 1988, pp. 341-355.
+ */
+
+exports.S_POLE = 1;
+exports.N_POLE = 2;
+exports.EQUIT = 3;
+exports.OBLIQ = 4;
+
+
+/* Initialize the Lambert Azimuthal Equal Area projection
+ ------------------------------------------------------*/
+exports.init = function() {
+ var t = Math.abs(this.lat0);
+ if (Math.abs(t - HALF_PI) < EPSLN) {
+ this.mode = this.lat0 < 0 ? this.S_POLE : this.N_POLE;
+ }
+ else if (Math.abs(t) < EPSLN) {
+ this.mode = this.EQUIT;
+ }
+ else {
+ this.mode = this.OBLIQ;
+ }
+ if (this.es > 0) {
+ var sinphi;
+
+ this.qp = qsfnz(this.e, 1);
+ this.mmf = 0.5 / (1 - this.es);
+ this.apa = this.authset(this.es);
+ switch (this.mode) {
+ case this.N_POLE:
+ this.dd = 1;
+ break;
+ case this.S_POLE:
+ this.dd = 1;
+ break;
+ case this.EQUIT:
+ this.rq = Math.sqrt(0.5 * this.qp);
+ this.dd = 1 / this.rq;
+ this.xmf = 1;
+ this.ymf = 0.5 * this.qp;
+ break;
+ case this.OBLIQ:
+ this.rq = Math.sqrt(0.5 * this.qp);
+ sinphi = Math.sin(this.lat0);
+ this.sinb1 = qsfnz(this.e, sinphi) / this.qp;
+ this.cosb1 = Math.sqrt(1 - this.sinb1 * this.sinb1);
+ this.dd = Math.cos(this.lat0) / (Math.sqrt(1 - this.es * sinphi * sinphi) * this.rq * this.cosb1);
+ this.ymf = (this.xmf = this.rq) / this.dd;
+ this.xmf *= this.dd;
+ break;
+ }
+ }
+ else {
+ if (this.mode === this.OBLIQ) {
+ this.sinph0 = Math.sin(this.lat0);
+ this.cosph0 = Math.cos(this.lat0);
+ }
+ }
+};
+
+/* Lambert Azimuthal Equal Area forward equations--mapping lat,long to x,y
+ -----------------------------------------------------------------------*/
+exports.forward = function(p) {
+
+ /* Forward equations
+ -----------------*/
+ var x, y, coslam, sinlam, sinphi, q, sinb, cosb, b, cosphi;
+ var lam = p.x;
+ var phi = p.y;
+
+ lam = adjust_lon(lam - this.long0);
+
+ if (this.sphere) {
+ sinphi = Math.sin(phi);
+ cosphi = Math.cos(phi);
+ coslam = Math.cos(lam);
+ if (this.mode === this.OBLIQ || this.mode === this.EQUIT) {
+ y = (this.mode === this.EQUIT) ? 1 + cosphi * coslam : 1 + this.sinph0 * sinphi + this.cosph0 * cosphi * coslam;
+ if (y <= EPSLN) {
+ return null;
+ }
+ y = Math.sqrt(2 / y);
+ x = y * cosphi * Math.sin(lam);
+ y *= (this.mode === this.EQUIT) ? sinphi : this.cosph0 * sinphi - this.sinph0 * cosphi * coslam;
+ }
+ else if (this.mode === this.N_POLE || this.mode === this.S_POLE) {
+ if (this.mode === this.N_POLE) {
+ coslam = -coslam;
+ }
+ if (Math.abs(phi + this.phi0) < EPSLN) {
+ return null;
+ }
+ y = FORTPI - phi * 0.5;
+ y = 2 * ((this.mode === this.S_POLE) ? Math.cos(y) : Math.sin(y));
+ x = y * Math.sin(lam);
+ y *= coslam;
+ }
+ }
+ else {
+ sinb = 0;
+ cosb = 0;
+ b = 0;
+ coslam = Math.cos(lam);
+ sinlam = Math.sin(lam);
+ sinphi = Math.sin(phi);
+ q = qsfnz(this.e, sinphi);
+ if (this.mode === this.OBLIQ || this.mode === this.EQUIT) {
+ sinb = q / this.qp;
+ cosb = Math.sqrt(1 - sinb * sinb);
+ }
+ switch (this.mode) {
+ case this.OBLIQ:
+ b = 1 + this.sinb1 * sinb + this.cosb1 * cosb * coslam;
+ break;
+ case this.EQUIT:
+ b = 1 + cosb * coslam;
+ break;
+ case this.N_POLE:
+ b = HALF_PI + phi;
+ q = this.qp - q;
+ break;
+ case this.S_POLE:
+ b = phi - HALF_PI;
+ q = this.qp + q;
+ break;
+ }
+ if (Math.abs(b) < EPSLN) {
+ return null;
+ }
+ switch (this.mode) {
+ case this.OBLIQ:
+ case this.EQUIT:
+ b = Math.sqrt(2 / b);
+ if (this.mode === this.OBLIQ) {
+ y = this.ymf * b * (this.cosb1 * sinb - this.sinb1 * cosb * coslam);
+ }
+ else {
+ y = (b = Math.sqrt(2 / (1 + cosb * coslam))) * sinb * this.ymf;
+ }
+ x = this.xmf * b * cosb * sinlam;
+ break;
+ case this.N_POLE:
+ case this.S_POLE:
+ if (q >= 0) {
+ x = (b = Math.sqrt(q)) * sinlam;
+ y = coslam * ((this.mode === this.S_POLE) ? b : -b);
+ }
+ else {
+ x = y = 0;
+ }
+ break;
+ }
+ }
+
+ p.x = this.a * x + this.x0;
+ p.y = this.a * y + this.y0;
+ return p;
+};
+
+/* Inverse equations
+ -----------------*/
+exports.inverse = function(p) {
+ p.x -= this.x0;
+ p.y -= this.y0;
+ var x = p.x / this.a;
+ var y = p.y / this.a;
+ var lam, phi, cCe, sCe, q, rho, ab;
+
+ if (this.sphere) {
+ var cosz = 0,
+ rh, sinz = 0;
+
+ rh = Math.sqrt(x * x + y * y);
+ phi = rh * 0.5;
+ if (phi > 1) {
+ return null;
+ }
+ phi = 2 * Math.asin(phi);
+ if (this.mode === this.OBLIQ || this.mode === this.EQUIT) {
+ sinz = Math.sin(phi);
+ cosz = Math.cos(phi);
+ }
+ switch (this.mode) {
+ case this.EQUIT:
+ phi = (Math.abs(rh) <= EPSLN) ? 0 : Math.asin(y * sinz / rh);
+ x *= sinz;
+ y = cosz * rh;
+ break;
+ case this.OBLIQ:
+ phi = (Math.abs(rh) <= EPSLN) ? this.phi0 : Math.asin(cosz * this.sinph0 + y * sinz * this.cosph0 / rh);
+ x *= sinz * this.cosph0;
+ y = (cosz - Math.sin(phi) * this.sinph0) * rh;
+ break;
+ case this.N_POLE:
+ y = -y;
+ phi = HALF_PI - phi;
+ break;
+ case this.S_POLE:
+ phi -= HALF_PI;
+ break;
+ }
+ lam = (y === 0 && (this.mode === this.EQUIT || this.mode === this.OBLIQ)) ? 0 : Math.atan2(x, y);
+ }
+ else {
+ ab = 0;
+ if (this.mode === this.OBLIQ || this.mode === this.EQUIT) {
+ x /= this.dd;
+ y *= this.dd;
+ rho = Math.sqrt(x * x + y * y);
+ if (rho < EPSLN) {
+ p.x = 0;
+ p.y = this.phi0;
+ return p;
+ }
+ sCe = 2 * Math.asin(0.5 * rho / this.rq);
+ cCe = Math.cos(sCe);
+ x *= (sCe = Math.sin(sCe));
+ if (this.mode === this.OBLIQ) {
+ ab = cCe * this.sinb1 + y * sCe * this.cosb1 / rho;
+ q = this.qp * ab;
+ y = rho * this.cosb1 * cCe - y * this.sinb1 * sCe;
+ }
+ else {
+ ab = y * sCe / rho;
+ q = this.qp * ab;
+ y = rho * cCe;
+ }
+ }
+ else if (this.mode === this.N_POLE || this.mode === this.S_POLE) {
+ if (this.mode === this.N_POLE) {
+ y = -y;
+ }
+ q = (x * x + y * y);
+ if (!q) {
+ p.x = 0;
+ p.y = this.phi0;
+ return p;
+ }
+ ab = 1 - q / this.qp;
+ if (this.mode === this.S_POLE) {
+ ab = -ab;
+ }
+ }
+ lam = Math.atan2(x, y);
+ phi = this.authlat(Math.asin(ab), this.apa);
+ }
+
+
+ p.x = adjust_lon(this.long0 + lam);
+ p.y = phi;
+ return p;
+};
+
+/* determine latitude from authalic latitude */
+exports.P00 = 0.33333333333333333333;
+exports.P01 = 0.17222222222222222222;
+exports.P02 = 0.10257936507936507936;
+exports.P10 = 0.06388888888888888888;
+exports.P11 = 0.06640211640211640211;
+exports.P20 = 0.01641501294219154443;
+
+exports.authset = function(es) {
+ var t;
+ var APA = [];
+ APA[0] = es * this.P00;
+ t = es * es;
+ APA[0] += t * this.P01;
+ APA[1] = t * this.P10;
+ t *= es;
+ APA[0] += t * this.P02;
+ APA[1] += t * this.P11;
+ APA[2] = t * this.P20;
+ return APA;
+};
+
+exports.authlat = function(beta, APA) {
+ var t = beta + beta;
+ return (beta + APA[0] * Math.sin(t) + APA[1] * Math.sin(t + t) + APA[2] * Math.sin(t + t + t));
+};
+exports.names = ["Lambert Azimuthal Equal Area", "Lambert_Azimuthal_Equal_Area", "laea"];
+
+},{"../common/adjust_lon":5,"../common/qsfnz":20}],49:[function(_dereq_,module,exports){
+var EPSLN = 1.0e-10;
+var msfnz = _dereq_('../common/msfnz');
+var tsfnz = _dereq_('../common/tsfnz');
+var HALF_PI = Math.PI/2;
+var sign = _dereq_('../common/sign');
+var adjust_lon = _dereq_('../common/adjust_lon');
+var phi2z = _dereq_('../common/phi2z');
+exports.init = function() {
+
+ // array of: r_maj,r_min,lat1,lat2,c_lon,c_lat,false_east,false_north
+ //double c_lat; /* center latitude */
+ //double c_lon; /* center longitude */
+ //double lat1; /* first standard parallel */
+ //double lat2; /* second standard parallel */
+ //double r_maj; /* major axis */
+ //double r_min; /* minor axis */
+ //double false_east; /* x offset in meters */
+ //double false_north; /* y offset in meters */
+
+ if (!this.lat2) {
+ this.lat2 = this.lat1;
+ } //if lat2 is not defined
+ if (!this.k0) {
+ this.k0 = 1;
+ }
+ this.x0 = this.x0 || 0;
+ this.y0 = this.y0 || 0;
+ // Standard Parallels cannot be equal and on opposite sides of the equator
+ if (Math.abs(this.lat1 + this.lat2) < EPSLN) {
+ return;
+ }
+
+ var temp = this.b / this.a;
+ this.e = Math.sqrt(1 - temp * temp);
+
+ var sin1 = Math.sin(this.lat1);
+ var cos1 = Math.cos(this.lat1);
+ var ms1 = msfnz(this.e, sin1, cos1);
+ var ts1 = tsfnz(this.e, this.lat1, sin1);
+
+ var sin2 = Math.sin(this.lat2);
+ var cos2 = Math.cos(this.lat2);
+ var ms2 = msfnz(this.e, sin2, cos2);
+ var ts2 = tsfnz(this.e, this.lat2, sin2);
+
+ var ts0 = tsfnz(this.e, this.lat0, Math.sin(this.lat0));
+
+ if (Math.abs(this.lat1 - this.lat2) > EPSLN) {
+ this.ns = Math.log(ms1 / ms2) / Math.log(ts1 / ts2);
+ }
+ else {
+ this.ns = sin1;
+ }
+ if (isNaN(this.ns)) {
+ this.ns = sin1;
+ }
+ this.f0 = ms1 / (this.ns * Math.pow(ts1, this.ns));
+ this.rh = this.a * this.f0 * Math.pow(ts0, this.ns);
+ if (!this.title) {
+ this.title = "Lambert Conformal Conic";
+ }
+};
+
+
+// Lambert Conformal conic forward equations--mapping lat,long to x,y
+// -----------------------------------------------------------------
+exports.forward = function(p) {
+
+ var lon = p.x;
+ var lat = p.y;
+
+ // singular cases :
+ if (Math.abs(2 * Math.abs(lat) - Math.PI) <= EPSLN) {
+ lat = sign(lat) * (HALF_PI - 2 * EPSLN);
+ }
+
+ var con = Math.abs(Math.abs(lat) - HALF_PI);
+ var ts, rh1;
+ if (con > EPSLN) {
+ ts = tsfnz(this.e, lat, Math.sin(lat));
+ rh1 = this.a * this.f0 * Math.pow(ts, this.ns);
+ }
+ else {
+ con = lat * this.ns;
+ if (con <= 0) {
+ return null;
+ }
+ rh1 = 0;
+ }
+ var theta = this.ns * adjust_lon(lon - this.long0);
+ p.x = this.k0 * (rh1 * Math.sin(theta)) + this.x0;
+ p.y = this.k0 * (this.rh - rh1 * Math.cos(theta)) + this.y0;
+
+ return p;
+};
+
+// Lambert Conformal Conic inverse equations--mapping x,y to lat/long
+// -----------------------------------------------------------------
+exports.inverse = function(p) {
+
+ var rh1, con, ts;
+ var lat, lon;
+ var x = (p.x - this.x0) / this.k0;
+ var y = (this.rh - (p.y - this.y0) / this.k0);
+ if (this.ns > 0) {
+ rh1 = Math.sqrt(x * x + y * y);
+ con = 1;
+ }
+ else {
+ rh1 = -Math.sqrt(x * x + y * y);
+ con = -1;
+ }
+ var theta = 0;
+ if (rh1 !== 0) {
+ theta = Math.atan2((con * x), (con * y));
+ }
+ if ((rh1 !== 0) || (this.ns > 0)) {
+ con = 1 / this.ns;
+ ts = Math.pow((rh1 / (this.a * this.f0)), con);
+ lat = phi2z(this.e, ts);
+ if (lat === -9999) {
+ return null;
+ }
+ }
+ else {
+ lat = -HALF_PI;
+ }
+ lon = adjust_lon(theta / this.ns + this.long0);
+
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+
+exports.names = ["Lambert Tangential Conformal Conic Projection", "Lambert_Conformal_Conic", "Lambert_Conformal_Conic_2SP", "lcc"];
+
+},{"../common/adjust_lon":5,"../common/msfnz":15,"../common/phi2z":16,"../common/sign":21,"../common/tsfnz":24}],50:[function(_dereq_,module,exports){
+exports.init = function() {
+ //no-op for longlat
+};
+
+function identity(pt) {
+ return pt;
+}
+exports.forward = identity;
+exports.inverse = identity;
+exports.names = ["longlat", "identity"];
+
+},{}],51:[function(_dereq_,module,exports){
+var msfnz = _dereq_('../common/msfnz');
+var HALF_PI = Math.PI/2;
+var EPSLN = 1.0e-10;
+var R2D = 57.29577951308232088;
+var adjust_lon = _dereq_('../common/adjust_lon');
+var FORTPI = Math.PI/4;
+var tsfnz = _dereq_('../common/tsfnz');
+var phi2z = _dereq_('../common/phi2z');
+exports.init = function() {
+ var con = this.b / this.a;
+ this.es = 1 - con * con;
+ if(!('x0' in this)){
+ this.x0 = 0;
+ }
+ if(!('y0' in this)){
+ this.y0 = 0;
+ }
+ this.e = Math.sqrt(this.es);
+ if (this.lat_ts) {
+ if (this.sphere) {
+ this.k0 = Math.cos(this.lat_ts);
+ }
+ else {
+ this.k0 = msfnz(this.e, Math.sin(this.lat_ts), Math.cos(this.lat_ts));
+ }
+ }
+ else {
+ if (!this.k0) {
+ if (this.k) {
+ this.k0 = this.k;
+ }
+ else {
+ this.k0 = 1;
+ }
+ }
+ }
+};
+
+/* Mercator forward equations--mapping lat,long to x,y
+ --------------------------------------------------*/
+
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+ // convert to radians
+ if (lat * R2D > 90 && lat * R2D < -90 && lon * R2D > 180 && lon * R2D < -180) {
+ return null;
+ }
+
+ var x, y;
+ if (Math.abs(Math.abs(lat) - HALF_PI) <= EPSLN) {
+ return null;
+ }
+ else {
+ if (this.sphere) {
+ x = this.x0 + this.a * this.k0 * adjust_lon(lon - this.long0);
+ y = this.y0 + this.a * this.k0 * Math.log(Math.tan(FORTPI + 0.5 * lat));
+ }
+ else {
+ var sinphi = Math.sin(lat);
+ var ts = tsfnz(this.e, lat, sinphi);
+ x = this.x0 + this.a * this.k0 * adjust_lon(lon - this.long0);
+ y = this.y0 - this.a * this.k0 * Math.log(ts);
+ }
+ p.x = x;
+ p.y = y;
+ return p;
+ }
+};
+
+
+/* Mercator inverse equations--mapping x,y to lat/long
+ --------------------------------------------------*/
+exports.inverse = function(p) {
+
+ var x = p.x - this.x0;
+ var y = p.y - this.y0;
+ var lon, lat;
+
+ if (this.sphere) {
+ lat = HALF_PI - 2 * Math.atan(Math.exp(-y / (this.a * this.k0)));
+ }
+ else {
+ var ts = Math.exp(-y / (this.a * this.k0));
+ lat = phi2z(this.e, ts);
+ if (lat === -9999) {
+ return null;
+ }
+ }
+ lon = adjust_lon(this.long0 + x / (this.a * this.k0));
+
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+
+exports.names = ["Mercator", "Popular Visualisation Pseudo Mercator", "Mercator_1SP", "Mercator_Auxiliary_Sphere", "merc"];
+
+},{"../common/adjust_lon":5,"../common/msfnz":15,"../common/phi2z":16,"../common/tsfnz":24}],52:[function(_dereq_,module,exports){
+var adjust_lon = _dereq_('../common/adjust_lon');
+/*
+ reference
+ "New Equal-Area Map Projections for Noncircular Regions", John P. Snyder,
+ The American Cartographer, Vol 15, No. 4, October 1988, pp. 341-355.
+ */
+
+
+/* Initialize the Miller Cylindrical projection
+ -------------------------------------------*/
+exports.init = function() {
+ //no-op
+};
+
+
+/* Miller Cylindrical forward equations--mapping lat,long to x,y
+ ------------------------------------------------------------*/
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+ /* Forward equations
+ -----------------*/
+ var dlon = adjust_lon(lon - this.long0);
+ var x = this.x0 + this.a * dlon;
+ var y = this.y0 + this.a * Math.log(Math.tan((Math.PI / 4) + (lat / 2.5))) * 1.25;
+
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+/* Miller Cylindrical inverse equations--mapping x,y to lat/long
+ ------------------------------------------------------------*/
+exports.inverse = function(p) {
+ p.x -= this.x0;
+ p.y -= this.y0;
+
+ var lon = adjust_lon(this.long0 + p.x / this.a);
+ var lat = 2.5 * (Math.atan(Math.exp(0.8 * p.y / this.a)) - Math.PI / 4);
+
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["Miller_Cylindrical", "mill"];
+
+},{"../common/adjust_lon":5}],53:[function(_dereq_,module,exports){
+var adjust_lon = _dereq_('../common/adjust_lon');
+var EPSLN = 1.0e-10;
+exports.init = function() {};
+
+/* Mollweide forward equations--mapping lat,long to x,y
+ ----------------------------------------------------*/
+exports.forward = function(p) {
+
+ /* Forward equations
+ -----------------*/
+ var lon = p.x;
+ var lat = p.y;
+
+ var delta_lon = adjust_lon(lon - this.long0);
+ var theta = lat;
+ var con = Math.PI * Math.sin(lat);
+
+ /* Iterate using the Newton-Raphson method to find theta
+ -----------------------------------------------------*/
+ for (var i = 0; true; i++) {
+ var delta_theta = -(theta + Math.sin(theta) - con) / (1 + Math.cos(theta));
+ theta += delta_theta;
+ if (Math.abs(delta_theta) < EPSLN) {
+ break;
+ }
+ }
+ theta /= 2;
+
+ /* If the latitude is 90 deg, force the x coordinate to be "0 + false easting"
+ this is done here because of precision problems with "cos(theta)"
+ --------------------------------------------------------------------------*/
+ if (Math.PI / 2 - Math.abs(lat) < EPSLN) {
+ delta_lon = 0;
+ }
+ var x = 0.900316316158 * this.a * delta_lon * Math.cos(theta) + this.x0;
+ var y = 1.4142135623731 * this.a * Math.sin(theta) + this.y0;
+
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+exports.inverse = function(p) {
+ var theta;
+ var arg;
+
+ /* Inverse equations
+ -----------------*/
+ p.x -= this.x0;
+ p.y -= this.y0;
+ arg = p.y / (1.4142135623731 * this.a);
+
+ /* Because of division by zero problems, 'arg' can not be 1. Therefore
+ a number very close to one is used instead.
+ -------------------------------------------------------------------*/
+ if (Math.abs(arg) > 0.999999999999) {
+ arg = 0.999999999999;
+ }
+ theta = Math.asin(arg);
+ var lon = adjust_lon(this.long0 + (p.x / (0.900316316158 * this.a * Math.cos(theta))));
+ if (lon < (-Math.PI)) {
+ lon = -Math.PI;
+ }
+ if (lon > Math.PI) {
+ lon = Math.PI;
+ }
+ arg = (2 * theta + Math.sin(2 * theta)) / Math.PI;
+ if (Math.abs(arg) > 1) {
+ arg = 1;
+ }
+ var lat = Math.asin(arg);
+
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["Mollweide", "moll"];
+
+},{"../common/adjust_lon":5}],54:[function(_dereq_,module,exports){
+var SEC_TO_RAD = 4.84813681109535993589914102357e-6;
+/*
+ reference
+ Department of Land and Survey Technical Circular 1973/32
+ http://www.linz.govt.nz/docs/miscellaneous/nz-map-definition.pdf
+ OSG Technical Report 4.1
+ http://www.linz.govt.nz/docs/miscellaneous/nzmg.pdf
+ */
+
+/**
+ * iterations: Number of iterations to refine inverse transform.
+ * 0 -> km accuracy
+ * 1 -> m accuracy -- suitable for most mapping applications
+ * 2 -> mm accuracy
+ */
+exports.iterations = 1;
+
+exports.init = function() {
+ this.A = [];
+ this.A[1] = 0.6399175073;
+ this.A[2] = -0.1358797613;
+ this.A[3] = 0.063294409;
+ this.A[4] = -0.02526853;
+ this.A[5] = 0.0117879;
+ this.A[6] = -0.0055161;
+ this.A[7] = 0.0026906;
+ this.A[8] = -0.001333;
+ this.A[9] = 0.00067;
+ this.A[10] = -0.00034;
+
+ this.B_re = [];
+ this.B_im = [];
+ this.B_re[1] = 0.7557853228;
+ this.B_im[1] = 0;
+ this.B_re[2] = 0.249204646;
+ this.B_im[2] = 0.003371507;
+ this.B_re[3] = -0.001541739;
+ this.B_im[3] = 0.041058560;
+ this.B_re[4] = -0.10162907;
+ this.B_im[4] = 0.01727609;
+ this.B_re[5] = -0.26623489;
+ this.B_im[5] = -0.36249218;
+ this.B_re[6] = -0.6870983;
+ this.B_im[6] = -1.1651967;
+
+ this.C_re = [];
+ this.C_im = [];
+ this.C_re[1] = 1.3231270439;
+ this.C_im[1] = 0;
+ this.C_re[2] = -0.577245789;
+ this.C_im[2] = -0.007809598;
+ this.C_re[3] = 0.508307513;
+ this.C_im[3] = -0.112208952;
+ this.C_re[4] = -0.15094762;
+ this.C_im[4] = 0.18200602;
+ this.C_re[5] = 1.01418179;
+ this.C_im[5] = 1.64497696;
+ this.C_re[6] = 1.9660549;
+ this.C_im[6] = 2.5127645;
+
+ this.D = [];
+ this.D[1] = 1.5627014243;
+ this.D[2] = 0.5185406398;
+ this.D[3] = -0.03333098;
+ this.D[4] = -0.1052906;
+ this.D[5] = -0.0368594;
+ this.D[6] = 0.007317;
+ this.D[7] = 0.01220;
+ this.D[8] = 0.00394;
+ this.D[9] = -0.0013;
+};
+
+/**
+ New Zealand Map Grid Forward - long/lat to x/y
+ long/lat in radians
+ */
+exports.forward = function(p) {
+ var n;
+ var lon = p.x;
+ var lat = p.y;
+
+ var delta_lat = lat - this.lat0;
+ var delta_lon = lon - this.long0;
+
+ // 1. Calculate d_phi and d_psi ... // and d_lambda
+ // For this algorithm, delta_latitude is in seconds of arc x 10-5, so we need to scale to those units. Longitude is radians.
+ var d_phi = delta_lat / SEC_TO_RAD * 1E-5;
+ var d_lambda = delta_lon;
+ var d_phi_n = 1; // d_phi^0
+
+ var d_psi = 0;
+ for (n = 1; n <= 10; n++) {
+ d_phi_n = d_phi_n * d_phi;
+ d_psi = d_psi + this.A[n] * d_phi_n;
+ }
+
+ // 2. Calculate theta
+ var th_re = d_psi;
+ var th_im = d_lambda;
+
+ // 3. Calculate z
+ var th_n_re = 1;
+ var th_n_im = 0; // theta^0
+ var th_n_re1;
+ var th_n_im1;
+
+ var z_re = 0;
+ var z_im = 0;
+ for (n = 1; n <= 6; n++) {
+ th_n_re1 = th_n_re * th_re - th_n_im * th_im;
+ th_n_im1 = th_n_im * th_re + th_n_re * th_im;
+ th_n_re = th_n_re1;
+ th_n_im = th_n_im1;
+ z_re = z_re + this.B_re[n] * th_n_re - this.B_im[n] * th_n_im;
+ z_im = z_im + this.B_im[n] * th_n_re + this.B_re[n] * th_n_im;
+ }
+
+ // 4. Calculate easting and northing
+ p.x = (z_im * this.a) + this.x0;
+ p.y = (z_re * this.a) + this.y0;
+
+ return p;
+};
+
+
+/**
+ New Zealand Map Grid Inverse - x/y to long/lat
+ */
+exports.inverse = function(p) {
+ var n;
+ var x = p.x;
+ var y = p.y;
+
+ var delta_x = x - this.x0;
+ var delta_y = y - this.y0;
+
+ // 1. Calculate z
+ var z_re = delta_y / this.a;
+ var z_im = delta_x / this.a;
+
+ // 2a. Calculate theta - first approximation gives km accuracy
+ var z_n_re = 1;
+ var z_n_im = 0; // z^0
+ var z_n_re1;
+ var z_n_im1;
+
+ var th_re = 0;
+ var th_im = 0;
+ for (n = 1; n <= 6; n++) {
+ z_n_re1 = z_n_re * z_re - z_n_im * z_im;
+ z_n_im1 = z_n_im * z_re + z_n_re * z_im;
+ z_n_re = z_n_re1;
+ z_n_im = z_n_im1;
+ th_re = th_re + this.C_re[n] * z_n_re - this.C_im[n] * z_n_im;
+ th_im = th_im + this.C_im[n] * z_n_re + this.C_re[n] * z_n_im;
+ }
+
+ // 2b. Iterate to refine the accuracy of the calculation
+ // 0 iterations gives km accuracy
+ // 1 iteration gives m accuracy -- good enough for most mapping applications
+ // 2 iterations bives mm accuracy
+ for (var i = 0; i < this.iterations; i++) {
+ var th_n_re = th_re;
+ var th_n_im = th_im;
+ var th_n_re1;
+ var th_n_im1;
+
+ var num_re = z_re;
+ var num_im = z_im;
+ for (n = 2; n <= 6; n++) {
+ th_n_re1 = th_n_re * th_re - th_n_im * th_im;
+ th_n_im1 = th_n_im * th_re + th_n_re * th_im;
+ th_n_re = th_n_re1;
+ th_n_im = th_n_im1;
+ num_re = num_re + (n - 1) * (this.B_re[n] * th_n_re - this.B_im[n] * th_n_im);
+ num_im = num_im + (n - 1) * (this.B_im[n] * th_n_re + this.B_re[n] * th_n_im);
+ }
+
+ th_n_re = 1;
+ th_n_im = 0;
+ var den_re = this.B_re[1];
+ var den_im = this.B_im[1];
+ for (n = 2; n <= 6; n++) {
+ th_n_re1 = th_n_re * th_re - th_n_im * th_im;
+ th_n_im1 = th_n_im * th_re + th_n_re * th_im;
+ th_n_re = th_n_re1;
+ th_n_im = th_n_im1;
+ den_re = den_re + n * (this.B_re[n] * th_n_re - this.B_im[n] * th_n_im);
+ den_im = den_im + n * (this.B_im[n] * th_n_re + this.B_re[n] * th_n_im);
+ }
+
+ // Complex division
+ var den2 = den_re * den_re + den_im * den_im;
+ th_re = (num_re * den_re + num_im * den_im) / den2;
+ th_im = (num_im * den_re - num_re * den_im) / den2;
+ }
+
+ // 3. Calculate d_phi ... // and d_lambda
+ var d_psi = th_re;
+ var d_lambda = th_im;
+ var d_psi_n = 1; // d_psi^0
+
+ var d_phi = 0;
+ for (n = 1; n <= 9; n++) {
+ d_psi_n = d_psi_n * d_psi;
+ d_phi = d_phi + this.D[n] * d_psi_n;
+ }
+
+ // 4. Calculate latitude and longitude
+ // d_phi is calcuated in second of arc * 10^-5, so we need to scale back to radians. d_lambda is in radians.
+ var lat = this.lat0 + (d_phi * SEC_TO_RAD * 1E5);
+ var lon = this.long0 + d_lambda;
+
+ p.x = lon;
+ p.y = lat;
+
+ return p;
+};
+exports.names = ["New_Zealand_Map_Grid", "nzmg"];
+},{}],55:[function(_dereq_,module,exports){
+var tsfnz = _dereq_('../common/tsfnz');
+var adjust_lon = _dereq_('../common/adjust_lon');
+var phi2z = _dereq_('../common/phi2z');
+var HALF_PI = Math.PI/2;
+var FORTPI = Math.PI/4;
+var EPSLN = 1.0e-10;
+
+/* Initialize the Oblique Mercator projection
+ ------------------------------------------*/
+exports.init = function() {
+ this.no_off = this.no_off || false;
+ this.no_rot = this.no_rot || false;
+
+ if (isNaN(this.k0)) {
+ this.k0 = 1;
+ }
+ var sinlat = Math.sin(this.lat0);
+ var coslat = Math.cos(this.lat0);
+ var con = this.e * sinlat;
+
+ this.bl = Math.sqrt(1 + this.es / (1 - this.es) * Math.pow(coslat, 4));
+ this.al = this.a * this.bl * this.k0 * Math.sqrt(1 - this.es) / (1 - con * con);
+ var t0 = tsfnz(this.e, this.lat0, sinlat);
+ var dl = this.bl / coslat * Math.sqrt((1 - this.es) / (1 - con * con));
+ if (dl * dl < 1) {
+ dl = 1;
+ }
+ var fl;
+ var gl;
+ if (!isNaN(this.longc)) {
+ //Central point and azimuth method
+
+ if (this.lat0 >= 0) {
+ fl = dl + Math.sqrt(dl * dl - 1);
+ }
+ else {
+ fl = dl - Math.sqrt(dl * dl - 1);
+ }
+ this.el = fl * Math.pow(t0, this.bl);
+ gl = 0.5 * (fl - 1 / fl);
+ this.gamma0 = Math.asin(Math.sin(this.alpha) / dl);
+ this.long0 = this.longc - Math.asin(gl * Math.tan(this.gamma0)) / this.bl;
+
+ }
+ else {
+ //2 points method
+ var t1 = tsfnz(this.e, this.lat1, Math.sin(this.lat1));
+ var t2 = tsfnz(this.e, this.lat2, Math.sin(this.lat2));
+ if (this.lat0 >= 0) {
+ this.el = (dl + Math.sqrt(dl * dl - 1)) * Math.pow(t0, this.bl);
+ }
+ else {
+ this.el = (dl - Math.sqrt(dl * dl - 1)) * Math.pow(t0, this.bl);
+ }
+ var hl = Math.pow(t1, this.bl);
+ var ll = Math.pow(t2, this.bl);
+ fl = this.el / hl;
+ gl = 0.5 * (fl - 1 / fl);
+ var jl = (this.el * this.el - ll * hl) / (this.el * this.el + ll * hl);
+ var pl = (ll - hl) / (ll + hl);
+ var dlon12 = adjust_lon(this.long1 - this.long2);
+ this.long0 = 0.5 * (this.long1 + this.long2) - Math.atan(jl * Math.tan(0.5 * this.bl * (dlon12)) / pl) / this.bl;
+ this.long0 = adjust_lon(this.long0);
+ var dlon10 = adjust_lon(this.long1 - this.long0);
+ this.gamma0 = Math.atan(Math.sin(this.bl * (dlon10)) / gl);
+ this.alpha = Math.asin(dl * Math.sin(this.gamma0));
+ }
+
+ if (this.no_off) {
+ this.uc = 0;
+ }
+ else {
+ if (this.lat0 >= 0) {
+ this.uc = this.al / this.bl * Math.atan2(Math.sqrt(dl * dl - 1), Math.cos(this.alpha));
+ }
+ else {
+ this.uc = -1 * this.al / this.bl * Math.atan2(Math.sqrt(dl * dl - 1), Math.cos(this.alpha));
+ }
+ }
+
+};
+
+
+/* Oblique Mercator forward equations--mapping lat,long to x,y
+ ----------------------------------------------------------*/
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+ var dlon = adjust_lon(lon - this.long0);
+ var us, vs;
+ var con;
+ if (Math.abs(Math.abs(lat) - HALF_PI) <= EPSLN) {
+ if (lat > 0) {
+ con = -1;
+ }
+ else {
+ con = 1;
+ }
+ vs = this.al / this.bl * Math.log(Math.tan(FORTPI + con * this.gamma0 * 0.5));
+ us = -1 * con * HALF_PI * this.al / this.bl;
+ }
+ else {
+ var t = tsfnz(this.e, lat, Math.sin(lat));
+ var ql = this.el / Math.pow(t, this.bl);
+ var sl = 0.5 * (ql - 1 / ql);
+ var tl = 0.5 * (ql + 1 / ql);
+ var vl = Math.sin(this.bl * (dlon));
+ var ul = (sl * Math.sin(this.gamma0) - vl * Math.cos(this.gamma0)) / tl;
+ if (Math.abs(Math.abs(ul) - 1) <= EPSLN) {
+ vs = Number.POSITIVE_INFINITY;
+ }
+ else {
+ vs = 0.5 * this.al * Math.log((1 - ul) / (1 + ul)) / this.bl;
+ }
+ if (Math.abs(Math.cos(this.bl * (dlon))) <= EPSLN) {
+ us = this.al * this.bl * (dlon);
+ }
+ else {
+ us = this.al * Math.atan2(sl * Math.cos(this.gamma0) + vl * Math.sin(this.gamma0), Math.cos(this.bl * dlon)) / this.bl;
+ }
+ }
+
+ if (this.no_rot) {
+ p.x = this.x0 + us;
+ p.y = this.y0 + vs;
+ }
+ else {
+
+ us -= this.uc;
+ p.x = this.x0 + vs * Math.cos(this.alpha) + us * Math.sin(this.alpha);
+ p.y = this.y0 + us * Math.cos(this.alpha) - vs * Math.sin(this.alpha);
+ }
+ return p;
+};
+
+exports.inverse = function(p) {
+ var us, vs;
+ if (this.no_rot) {
+ vs = p.y - this.y0;
+ us = p.x - this.x0;
+ }
+ else {
+ vs = (p.x - this.x0) * Math.cos(this.alpha) - (p.y - this.y0) * Math.sin(this.alpha);
+ us = (p.y - this.y0) * Math.cos(this.alpha) + (p.x - this.x0) * Math.sin(this.alpha);
+ us += this.uc;
+ }
+ var qp = Math.exp(-1 * this.bl * vs / this.al);
+ var sp = 0.5 * (qp - 1 / qp);
+ var tp = 0.5 * (qp + 1 / qp);
+ var vp = Math.sin(this.bl * us / this.al);
+ var up = (vp * Math.cos(this.gamma0) + sp * Math.sin(this.gamma0)) / tp;
+ var ts = Math.pow(this.el / Math.sqrt((1 + up) / (1 - up)), 1 / this.bl);
+ if (Math.abs(up - 1) < EPSLN) {
+ p.x = this.long0;
+ p.y = HALF_PI;
+ }
+ else if (Math.abs(up + 1) < EPSLN) {
+ p.x = this.long0;
+ p.y = -1 * HALF_PI;
+ }
+ else {
+ p.y = phi2z(this.e, ts);
+ p.x = adjust_lon(this.long0 - Math.atan2(sp * Math.cos(this.gamma0) - vp * Math.sin(this.gamma0), Math.cos(this.bl * us / this.al)) / this.bl);
+ }
+ return p;
+};
+
+exports.names = ["Hotine_Oblique_Mercator", "Hotine Oblique Mercator", "Hotine_Oblique_Mercator_Azimuth_Natural_Origin", "Hotine_Oblique_Mercator_Azimuth_Center", "omerc"];
+},{"../common/adjust_lon":5,"../common/phi2z":16,"../common/tsfnz":24}],56:[function(_dereq_,module,exports){
+var e0fn = _dereq_('../common/e0fn');
+var e1fn = _dereq_('../common/e1fn');
+var e2fn = _dereq_('../common/e2fn');
+var e3fn = _dereq_('../common/e3fn');
+var adjust_lon = _dereq_('../common/adjust_lon');
+var adjust_lat = _dereq_('../common/adjust_lat');
+var mlfn = _dereq_('../common/mlfn');
+var EPSLN = 1.0e-10;
+var gN = _dereq_('../common/gN');
+var MAX_ITER = 20;
+exports.init = function() {
+ /* Place parameters in static storage for common use
+ -------------------------------------------------*/
+ this.temp = this.b / this.a;
+ this.es = 1 - Math.pow(this.temp, 2); // devait etre dans tmerc.js mais n y est pas donc je commente sinon retour de valeurs nulles
+ this.e = Math.sqrt(this.es);
+ this.e0 = e0fn(this.es);
+ this.e1 = e1fn(this.es);
+ this.e2 = e2fn(this.es);
+ this.e3 = e3fn(this.es);
+ this.ml0 = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, this.lat0); //si que des zeros le calcul ne se fait pas
+};
+
+
+/* Polyconic forward equations--mapping lat,long to x,y
+ ---------------------------------------------------*/
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+ var x, y, el;
+ var dlon = adjust_lon(lon - this.long0);
+ el = dlon * Math.sin(lat);
+ if (this.sphere) {
+ if (Math.abs(lat) <= EPSLN) {
+ x = this.a * dlon;
+ y = -1 * this.a * this.lat0;
+ }
+ else {
+ x = this.a * Math.sin(el) / Math.tan(lat);
+ y = this.a * (adjust_lat(lat - this.lat0) + (1 - Math.cos(el)) / Math.tan(lat));
+ }
+ }
+ else {
+ if (Math.abs(lat) <= EPSLN) {
+ x = this.a * dlon;
+ y = -1 * this.ml0;
+ }
+ else {
+ var nl = gN(this.a, this.e, Math.sin(lat)) / Math.tan(lat);
+ x = nl * Math.sin(el);
+ y = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, lat) - this.ml0 + nl * (1 - Math.cos(el));
+ }
+
+ }
+ p.x = x + this.x0;
+ p.y = y + this.y0;
+ return p;
+};
+
+
+/* Inverse equations
+ -----------------*/
+exports.inverse = function(p) {
+ var lon, lat, x, y, i;
+ var al, bl;
+ var phi, dphi;
+ x = p.x - this.x0;
+ y = p.y - this.y0;
+
+ if (this.sphere) {
+ if (Math.abs(y + this.a * this.lat0) <= EPSLN) {
+ lon = adjust_lon(x / this.a + this.long0);
+ lat = 0;
+ }
+ else {
+ al = this.lat0 + y / this.a;
+ bl = x * x / this.a / this.a + al * al;
+ phi = al;
+ var tanphi;
+ for (i = MAX_ITER; i; --i) {
+ tanphi = Math.tan(phi);
+ dphi = -1 * (al * (phi * tanphi + 1) - phi - 0.5 * (phi * phi + bl) * tanphi) / ((phi - al) / tanphi - 1);
+ phi += dphi;
+ if (Math.abs(dphi) <= EPSLN) {
+ lat = phi;
+ break;
+ }
+ }
+ lon = adjust_lon(this.long0 + (Math.asin(x * Math.tan(phi) / this.a)) / Math.sin(lat));
+ }
+ }
+ else {
+ if (Math.abs(y + this.ml0) <= EPSLN) {
+ lat = 0;
+ lon = adjust_lon(this.long0 + x / this.a);
+ }
+ else {
+
+ al = (this.ml0 + y) / this.a;
+ bl = x * x / this.a / this.a + al * al;
+ phi = al;
+ var cl, mln, mlnp, ma;
+ var con;
+ for (i = MAX_ITER; i; --i) {
+ con = this.e * Math.sin(phi);
+ cl = Math.sqrt(1 - con * con) * Math.tan(phi);
+ mln = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, phi);
+ mlnp = this.e0 - 2 * this.e1 * Math.cos(2 * phi) + 4 * this.e2 * Math.cos(4 * phi) - 6 * this.e3 * Math.cos(6 * phi);
+ ma = mln / this.a;
+ dphi = (al * (cl * ma + 1) - ma - 0.5 * cl * (ma * ma + bl)) / (this.es * Math.sin(2 * phi) * (ma * ma + bl - 2 * al * ma) / (4 * cl) + (al - ma) * (cl * mlnp - 2 / Math.sin(2 * phi)) - mlnp);
+ phi -= dphi;
+ if (Math.abs(dphi) <= EPSLN) {
+ lat = phi;
+ break;
+ }
+ }
+
+ //lat=phi4z(this.e,this.e0,this.e1,this.e2,this.e3,al,bl,0,0);
+ cl = Math.sqrt(1 - this.es * Math.pow(Math.sin(lat), 2)) * Math.tan(lat);
+ lon = adjust_lon(this.long0 + Math.asin(x * cl / this.a) / Math.sin(lat));
+ }
+ }
+
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["Polyconic", "poly"];
+},{"../common/adjust_lat":4,"../common/adjust_lon":5,"../common/e0fn":7,"../common/e1fn":8,"../common/e2fn":9,"../common/e3fn":10,"../common/gN":11,"../common/mlfn":14}],57:[function(_dereq_,module,exports){
+var adjust_lon = _dereq_('../common/adjust_lon');
+var adjust_lat = _dereq_('../common/adjust_lat');
+var pj_enfn = _dereq_('../common/pj_enfn');
+var MAX_ITER = 20;
+var pj_mlfn = _dereq_('../common/pj_mlfn');
+var pj_inv_mlfn = _dereq_('../common/pj_inv_mlfn');
+var HALF_PI = Math.PI/2;
+var EPSLN = 1.0e-10;
+var asinz = _dereq_('../common/asinz');
+exports.init = function() {
+ /* Place parameters in static storage for common use
+ -------------------------------------------------*/
+
+
+ if (!this.sphere) {
+ this.en = pj_enfn(this.es);
+ }
+ else {
+ this.n = 1;
+ this.m = 0;
+ this.es = 0;
+ this.C_y = Math.sqrt((this.m + 1) / this.n);
+ this.C_x = this.C_y / (this.m + 1);
+ }
+
+};
+
+/* Sinusoidal forward equations--mapping lat,long to x,y
+ -----------------------------------------------------*/
+exports.forward = function(p) {
+ var x, y;
+ var lon = p.x;
+ var lat = p.y;
+ /* Forward equations
+ -----------------*/
+ lon = adjust_lon(lon - this.long0);
+
+ if (this.sphere) {
+ if (!this.m) {
+ lat = this.n !== 1 ? Math.asin(this.n * Math.sin(lat)) : lat;
+ }
+ else {
+ var k = this.n * Math.sin(lat);
+ for (var i = MAX_ITER; i; --i) {
+ var V = (this.m * lat + Math.sin(lat) - k) / (this.m + Math.cos(lat));
+ lat -= V;
+ if (Math.abs(V) < EPSLN) {
+ break;
+ }
+ }
+ }
+ x = this.a * this.C_x * lon * (this.m + Math.cos(lat));
+ y = this.a * this.C_y * lat;
+
+ }
+ else {
+
+ var s = Math.sin(lat);
+ var c = Math.cos(lat);
+ y = this.a * pj_mlfn(lat, s, c, this.en);
+ x = this.a * lon * c / Math.sqrt(1 - this.es * s * s);
+ }
+
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+exports.inverse = function(p) {
+ var lat, temp, lon, s;
+
+ p.x -= this.x0;
+ lon = p.x / this.a;
+ p.y -= this.y0;
+ lat = p.y / this.a;
+
+ if (this.sphere) {
+ lat /= this.C_y;
+ lon = lon / (this.C_x * (this.m + Math.cos(lat)));
+ if (this.m) {
+ lat = asinz((this.m * lat + Math.sin(lat)) / this.n);
+ }
+ else if (this.n !== 1) {
+ lat = asinz(Math.sin(lat) / this.n);
+ }
+ lon = adjust_lon(lon + this.long0);
+ lat = adjust_lat(lat);
+ }
+ else {
+ lat = pj_inv_mlfn(p.y / this.a, this.es, this.en);
+ s = Math.abs(lat);
+ if (s < HALF_PI) {
+ s = Math.sin(lat);
+ temp = this.long0 + p.x * Math.sqrt(1 - this.es * s * s) / (this.a * Math.cos(lat));
+ //temp = this.long0 + p.x / (this.a * Math.cos(lat));
+ lon = adjust_lon(temp);
+ }
+ else if ((s - EPSLN) < HALF_PI) {
+ lon = this.long0;
+ }
+ }
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["Sinusoidal", "sinu"];
+},{"../common/adjust_lat":4,"../common/adjust_lon":5,"../common/asinz":6,"../common/pj_enfn":17,"../common/pj_inv_mlfn":18,"../common/pj_mlfn":19}],58:[function(_dereq_,module,exports){
+/*
+ references:
+ Formules et constantes pour le Calcul pour la
+ projection cylindrique conforme à axe oblique et pour la transformation entre
+ des systèmes de référence.
+ http://www.swisstopo.admin.ch/internet/swisstopo/fr/home/topics/survey/sys/refsys/switzerland.parsysrelated1.31216.downloadList.77004.DownloadFile.tmp/swissprojectionfr.pdf
+ */
+exports.init = function() {
+ var phy0 = this.lat0;
+ this.lambda0 = this.long0;
+ var sinPhy0 = Math.sin(phy0);
+ var semiMajorAxis = this.a;
+ var invF = this.rf;
+ var flattening = 1 / invF;
+ var e2 = 2 * flattening - Math.pow(flattening, 2);
+ var e = this.e = Math.sqrt(e2);
+ this.R = this.k0 * semiMajorAxis * Math.sqrt(1 - e2) / (1 - e2 * Math.pow(sinPhy0, 2));
+ this.alpha = Math.sqrt(1 + e2 / (1 - e2) * Math.pow(Math.cos(phy0), 4));
+ this.b0 = Math.asin(sinPhy0 / this.alpha);
+ var k1 = Math.log(Math.tan(Math.PI / 4 + this.b0 / 2));
+ var k2 = Math.log(Math.tan(Math.PI / 4 + phy0 / 2));
+ var k3 = Math.log((1 + e * sinPhy0) / (1 - e * sinPhy0));
+ this.K = k1 - this.alpha * k2 + this.alpha * e / 2 * k3;
+};
+
+
+exports.forward = function(p) {
+ var Sa1 = Math.log(Math.tan(Math.PI / 4 - p.y / 2));
+ var Sa2 = this.e / 2 * Math.log((1 + this.e * Math.sin(p.y)) / (1 - this.e * Math.sin(p.y)));
+ var S = -this.alpha * (Sa1 + Sa2) + this.K;
+
+ // spheric latitude
+ var b = 2 * (Math.atan(Math.exp(S)) - Math.PI / 4);
+
+ // spheric longitude
+ var I = this.alpha * (p.x - this.lambda0);
+
+ // psoeudo equatorial rotation
+ var rotI = Math.atan(Math.sin(I) / (Math.sin(this.b0) * Math.tan(b) + Math.cos(this.b0) * Math.cos(I)));
+
+ var rotB = Math.asin(Math.cos(this.b0) * Math.sin(b) - Math.sin(this.b0) * Math.cos(b) * Math.cos(I));
+
+ p.y = this.R / 2 * Math.log((1 + Math.sin(rotB)) / (1 - Math.sin(rotB))) + this.y0;
+ p.x = this.R * rotI + this.x0;
+ return p;
+};
+
+exports.inverse = function(p) {
+ var Y = p.x - this.x0;
+ var X = p.y - this.y0;
+
+ var rotI = Y / this.R;
+ var rotB = 2 * (Math.atan(Math.exp(X / this.R)) - Math.PI / 4);
+
+ var b = Math.asin(Math.cos(this.b0) * Math.sin(rotB) + Math.sin(this.b0) * Math.cos(rotB) * Math.cos(rotI));
+ var I = Math.atan(Math.sin(rotI) / (Math.cos(this.b0) * Math.cos(rotI) - Math.sin(this.b0) * Math.tan(rotB)));
+
+ var lambda = this.lambda0 + I / this.alpha;
+
+ var S = 0;
+ var phy = b;
+ var prevPhy = -1000;
+ var iteration = 0;
+ while (Math.abs(phy - prevPhy) > 0.0000001) {
+ if (++iteration > 20) {
+ //...reportError("omercFwdInfinity");
+ return;
+ }
+ //S = Math.log(Math.tan(Math.PI / 4 + phy / 2));
+ S = 1 / this.alpha * (Math.log(Math.tan(Math.PI / 4 + b / 2)) - this.K) + this.e * Math.log(Math.tan(Math.PI / 4 + Math.asin(this.e * Math.sin(phy)) / 2));
+ prevPhy = phy;
+ phy = 2 * Math.atan(Math.exp(S)) - Math.PI / 2;
+ }
+
+ p.x = lambda;
+ p.y = phy;
+ return p;
+};
+
+exports.names = ["somerc"];
+
+},{}],59:[function(_dereq_,module,exports){
+var HALF_PI = Math.PI/2;
+var EPSLN = 1.0e-10;
+var sign = _dereq_('../common/sign');
+var msfnz = _dereq_('../common/msfnz');
+var tsfnz = _dereq_('../common/tsfnz');
+var phi2z = _dereq_('../common/phi2z');
+var adjust_lon = _dereq_('../common/adjust_lon');
+exports.ssfn_ = function(phit, sinphi, eccen) {
+ sinphi *= eccen;
+ return (Math.tan(0.5 * (HALF_PI + phit)) * Math.pow((1 - sinphi) / (1 + sinphi), 0.5 * eccen));
+};
+
+exports.init = function() {
+ this.coslat0 = Math.cos(this.lat0);
+ this.sinlat0 = Math.sin(this.lat0);
+ if (this.sphere) {
+ if (this.k0 === 1 && !isNaN(this.lat_ts) && Math.abs(this.coslat0) <= EPSLN) {
+ this.k0 = 0.5 * (1 + sign(this.lat0) * Math.sin(this.lat_ts));
+ }
+ }
+ else {
+ if (Math.abs(this.coslat0) <= EPSLN) {
+ if (this.lat0 > 0) {
+ //North pole
+ //trace('stere:north pole');
+ this.con = 1;
+ }
+ else {
+ //South pole
+ //trace('stere:south pole');
+ this.con = -1;
+ }
+ }
+ this.cons = Math.sqrt(Math.pow(1 + this.e, 1 + this.e) * Math.pow(1 - this.e, 1 - this.e));
+ if (this.k0 === 1 && !isNaN(this.lat_ts) && Math.abs(this.coslat0) <= EPSLN) {
+ this.k0 = 0.5 * this.cons * msfnz(this.e, Math.sin(this.lat_ts), Math.cos(this.lat_ts)) / tsfnz(this.e, this.con * this.lat_ts, this.con * Math.sin(this.lat_ts));
+ }
+ this.ms1 = msfnz(this.e, this.sinlat0, this.coslat0);
+ this.X0 = 2 * Math.atan(this.ssfn_(this.lat0, this.sinlat0, this.e)) - HALF_PI;
+ this.cosX0 = Math.cos(this.X0);
+ this.sinX0 = Math.sin(this.X0);
+ }
+};
+
+// Stereographic forward equations--mapping lat,long to x,y
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+ var sinlat = Math.sin(lat);
+ var coslat = Math.cos(lat);
+ var A, X, sinX, cosX, ts, rh;
+ var dlon = adjust_lon(lon - this.long0);
+
+ if (Math.abs(Math.abs(lon - this.long0) - Math.PI) <= EPSLN && Math.abs(lat + this.lat0) <= EPSLN) {
+ //case of the origine point
+ //trace('stere:this is the origin point');
+ p.x = NaN;
+ p.y = NaN;
+ return p;
+ }
+ if (this.sphere) {
+ //trace('stere:sphere case');
+ A = 2 * this.k0 / (1 + this.sinlat0 * sinlat + this.coslat0 * coslat * Math.cos(dlon));
+ p.x = this.a * A * coslat * Math.sin(dlon) + this.x0;
+ p.y = this.a * A * (this.coslat0 * sinlat - this.sinlat0 * coslat * Math.cos(dlon)) + this.y0;
+ return p;
+ }
+ else {
+ X = 2 * Math.atan(this.ssfn_(lat, sinlat, this.e)) - HALF_PI;
+ cosX = Math.cos(X);
+ sinX = Math.sin(X);
+ if (Math.abs(this.coslat0) <= EPSLN) {
+ ts = tsfnz(this.e, lat * this.con, this.con * sinlat);
+ rh = 2 * this.a * this.k0 * ts / this.cons;
+ p.x = this.x0 + rh * Math.sin(lon - this.long0);
+ p.y = this.y0 - this.con * rh * Math.cos(lon - this.long0);
+ //trace(p.toString());
+ return p;
+ }
+ else if (Math.abs(this.sinlat0) < EPSLN) {
+ //Eq
+ //trace('stere:equateur');
+ A = 2 * this.a * this.k0 / (1 + cosX * Math.cos(dlon));
+ p.y = A * sinX;
+ }
+ else {
+ //other case
+ //trace('stere:normal case');
+ A = 2 * this.a * this.k0 * this.ms1 / (this.cosX0 * (1 + this.sinX0 * sinX + this.cosX0 * cosX * Math.cos(dlon)));
+ p.y = A * (this.cosX0 * sinX - this.sinX0 * cosX * Math.cos(dlon)) + this.y0;
+ }
+ p.x = A * cosX * Math.sin(dlon) + this.x0;
+ }
+ //trace(p.toString());
+ return p;
+};
+
+
+//* Stereographic inverse equations--mapping x,y to lat/long
+exports.inverse = function(p) {
+ p.x -= this.x0;
+ p.y -= this.y0;
+ var lon, lat, ts, ce, Chi;
+ var rh = Math.sqrt(p.x * p.x + p.y * p.y);
+ if (this.sphere) {
+ var c = 2 * Math.atan(rh / (0.5 * this.a * this.k0));
+ lon = this.long0;
+ lat = this.lat0;
+ if (rh <= EPSLN) {
+ p.x = lon;
+ p.y = lat;
+ return p;
+ }
+ lat = Math.asin(Math.cos(c) * this.sinlat0 + p.y * Math.sin(c) * this.coslat0 / rh);
+ if (Math.abs(this.coslat0) < EPSLN) {
+ if (this.lat0 > 0) {
+ lon = adjust_lon(this.long0 + Math.atan2(p.x, - 1 * p.y));
+ }
+ else {
+ lon = adjust_lon(this.long0 + Math.atan2(p.x, p.y));
+ }
+ }
+ else {
+ lon = adjust_lon(this.long0 + Math.atan2(p.x * Math.sin(c), rh * this.coslat0 * Math.cos(c) - p.y * this.sinlat0 * Math.sin(c)));
+ }
+ p.x = lon;
+ p.y = lat;
+ return p;
+ }
+ else {
+ if (Math.abs(this.coslat0) <= EPSLN) {
+ if (rh <= EPSLN) {
+ lat = this.lat0;
+ lon = this.long0;
+ p.x = lon;
+ p.y = lat;
+ //trace(p.toString());
+ return p;
+ }
+ p.x *= this.con;
+ p.y *= this.con;
+ ts = rh * this.cons / (2 * this.a * this.k0);
+ lat = this.con * phi2z(this.e, ts);
+ lon = this.con * adjust_lon(this.con * this.long0 + Math.atan2(p.x, - 1 * p.y));
+ }
+ else {
+ ce = 2 * Math.atan(rh * this.cosX0 / (2 * this.a * this.k0 * this.ms1));
+ lon = this.long0;
+ if (rh <= EPSLN) {
+ Chi = this.X0;
+ }
+ else {
+ Chi = Math.asin(Math.cos(ce) * this.sinX0 + p.y * Math.sin(ce) * this.cosX0 / rh);
+ lon = adjust_lon(this.long0 + Math.atan2(p.x * Math.sin(ce), rh * this.cosX0 * Math.cos(ce) - p.y * this.sinX0 * Math.sin(ce)));
+ }
+ lat = -1 * phi2z(this.e, Math.tan(0.5 * (HALF_PI + Chi)));
+ }
+ }
+ p.x = lon;
+ p.y = lat;
+
+ //trace(p.toString());
+ return p;
+
+};
+exports.names = ["stere"];
+},{"../common/adjust_lon":5,"../common/msfnz":15,"../common/phi2z":16,"../common/sign":21,"../common/tsfnz":24}],60:[function(_dereq_,module,exports){
+var gauss = _dereq_('./gauss');
+var adjust_lon = _dereq_('../common/adjust_lon');
+exports.init = function() {
+ gauss.init.apply(this);
+ if (!this.rc) {
+ return;
+ }
+ this.sinc0 = Math.sin(this.phic0);
+ this.cosc0 = Math.cos(this.phic0);
+ this.R2 = 2 * this.rc;
+ if (!this.title) {
+ this.title = "Oblique Stereographic Alternative";
+ }
+};
+
+exports.forward = function(p) {
+ var sinc, cosc, cosl, k;
+ p.x = adjust_lon(p.x - this.long0);
+ gauss.forward.apply(this, [p]);
+ sinc = Math.sin(p.y);
+ cosc = Math.cos(p.y);
+ cosl = Math.cos(p.x);
+ k = this.k0 * this.R2 / (1 + this.sinc0 * sinc + this.cosc0 * cosc * cosl);
+ p.x = k * cosc * Math.sin(p.x);
+ p.y = k * (this.cosc0 * sinc - this.sinc0 * cosc * cosl);
+ p.x = this.a * p.x + this.x0;
+ p.y = this.a * p.y + this.y0;
+ return p;
+};
+
+exports.inverse = function(p) {
+ var sinc, cosc, lon, lat, rho;
+ p.x = (p.x - this.x0) / this.a;
+ p.y = (p.y - this.y0) / this.a;
+
+ p.x /= this.k0;
+ p.y /= this.k0;
+ if ((rho = Math.sqrt(p.x * p.x + p.y * p.y))) {
+ var c = 2 * Math.atan2(rho, this.R2);
+ sinc = Math.sin(c);
+ cosc = Math.cos(c);
+ lat = Math.asin(cosc * this.sinc0 + p.y * sinc * this.cosc0 / rho);
+ lon = Math.atan2(p.x * sinc, rho * this.cosc0 * cosc - p.y * this.sinc0 * sinc);
+ }
+ else {
+ lat = this.phic0;
+ lon = 0;
+ }
+
+ p.x = lon;
+ p.y = lat;
+ gauss.inverse.apply(this, [p]);
+ p.x = adjust_lon(p.x + this.long0);
+ return p;
+};
+
+exports.names = ["Stereographic_North_Pole", "Oblique_Stereographic", "Polar_Stereographic", "sterea","Oblique Stereographic Alternative"];
+
+},{"../common/adjust_lon":5,"./gauss":45}],61:[function(_dereq_,module,exports){
+var e0fn = _dereq_('../common/e0fn');
+var e1fn = _dereq_('../common/e1fn');
+var e2fn = _dereq_('../common/e2fn');
+var e3fn = _dereq_('../common/e3fn');
+var mlfn = _dereq_('../common/mlfn');
+var adjust_lon = _dereq_('../common/adjust_lon');
+var HALF_PI = Math.PI/2;
+var EPSLN = 1.0e-10;
+var sign = _dereq_('../common/sign');
+var asinz = _dereq_('../common/asinz');
+
+exports.init = function() {
+ this.e0 = e0fn(this.es);
+ this.e1 = e1fn(this.es);
+ this.e2 = e2fn(this.es);
+ this.e3 = e3fn(this.es);
+ this.ml0 = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, this.lat0);
+};
+
+/**
+ Transverse Mercator Forward - long/lat to x/y
+ long/lat in radians
+ */
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+
+ var delta_lon = adjust_lon(lon - this.long0);
+ var con;
+ var x, y;
+ var sin_phi = Math.sin(lat);
+ var cos_phi = Math.cos(lat);
+
+ if (this.sphere) {
+ var b = cos_phi * Math.sin(delta_lon);
+ if ((Math.abs(Math.abs(b) - 1)) < 0.0000000001) {
+ return (93);
+ }
+ else {
+ x = 0.5 * this.a * this.k0 * Math.log((1 + b) / (1 - b));
+ con = Math.acos(cos_phi * Math.cos(delta_lon) / Math.sqrt(1 - b * b));
+ if (lat < 0) {
+ con = -con;
+ }
+ y = this.a * this.k0 * (con - this.lat0);
+ }
+ }
+ else {
+ var al = cos_phi * delta_lon;
+ var als = Math.pow(al, 2);
+ var c = this.ep2 * Math.pow(cos_phi, 2);
+ var tq = Math.tan(lat);
+ var t = Math.pow(tq, 2);
+ con = 1 - this.es * Math.pow(sin_phi, 2);
+ var n = this.a / Math.sqrt(con);
+ var ml = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, lat);
+
+ x = this.k0 * n * al * (1 + als / 6 * (1 - t + c + als / 20 * (5 - 18 * t + Math.pow(t, 2) + 72 * c - 58 * this.ep2))) + this.x0;
+ y = this.k0 * (ml - this.ml0 + n * tq * (als * (0.5 + als / 24 * (5 - t + 9 * c + 4 * Math.pow(c, 2) + als / 30 * (61 - 58 * t + Math.pow(t, 2) + 600 * c - 330 * this.ep2))))) + this.y0;
+
+ }
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+/**
+ Transverse Mercator Inverse - x/y to long/lat
+ */
+exports.inverse = function(p) {
+ var con, phi;
+ var delta_phi;
+ var i;
+ var max_iter = 6;
+ var lat, lon;
+
+ if (this.sphere) {
+ var f = Math.exp(p.x / (this.a * this.k0));
+ var g = 0.5 * (f - 1 / f);
+ var temp = this.lat0 + p.y / (this.a * this.k0);
+ var h = Math.cos(temp);
+ con = Math.sqrt((1 - h * h) / (1 + g * g));
+ lat = asinz(con);
+ if (temp < 0) {
+ lat = -lat;
+ }
+ if ((g === 0) && (h === 0)) {
+ lon = this.long0;
+ }
+ else {
+ lon = adjust_lon(Math.atan2(g, h) + this.long0);
+ }
+ }
+ else { // ellipsoidal form
+ var x = p.x - this.x0;
+ var y = p.y - this.y0;
+
+ con = (this.ml0 + y / this.k0) / this.a;
+ phi = con;
+ for (i = 0; true; i++) {
+ delta_phi = ((con + this.e1 * Math.sin(2 * phi) - this.e2 * Math.sin(4 * phi) + this.e3 * Math.sin(6 * phi)) / this.e0) - phi;
+ phi += delta_phi;
+ if (Math.abs(delta_phi) <= EPSLN) {
+ break;
+ }
+ if (i >= max_iter) {
+ return (95);
+ }
+ } // for()
+ if (Math.abs(phi) < HALF_PI) {
+ var sin_phi = Math.sin(phi);
+ var cos_phi = Math.cos(phi);
+ var tan_phi = Math.tan(phi);
+ var c = this.ep2 * Math.pow(cos_phi, 2);
+ var cs = Math.pow(c, 2);
+ var t = Math.pow(tan_phi, 2);
+ var ts = Math.pow(t, 2);
+ con = 1 - this.es * Math.pow(sin_phi, 2);
+ var n = this.a / Math.sqrt(con);
+ var r = n * (1 - this.es) / con;
+ var d = x / (n * this.k0);
+ var ds = Math.pow(d, 2);
+ lat = phi - (n * tan_phi * ds / r) * (0.5 - ds / 24 * (5 + 3 * t + 10 * c - 4 * cs - 9 * this.ep2 - ds / 30 * (61 + 90 * t + 298 * c + 45 * ts - 252 * this.ep2 - 3 * cs)));
+ lon = adjust_lon(this.long0 + (d * (1 - ds / 6 * (1 + 2 * t + c - ds / 20 * (5 - 2 * c + 28 * t - 3 * cs + 8 * this.ep2 + 24 * ts))) / cos_phi));
+ }
+ else {
+ lat = HALF_PI * sign(y);
+ lon = this.long0;
+ }
+ }
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["Transverse_Mercator", "Transverse Mercator", "tmerc"];
+
+},{"../common/adjust_lon":5,"../common/asinz":6,"../common/e0fn":7,"../common/e1fn":8,"../common/e2fn":9,"../common/e3fn":10,"../common/mlfn":14,"../common/sign":21}],62:[function(_dereq_,module,exports){
+var D2R = 0.01745329251994329577;
+var tmerc = _dereq_('./tmerc');
+exports.dependsOn = 'tmerc';
+exports.init = function() {
+ if (!this.zone) {
+ return;
+ }
+ this.lat0 = 0;
+ this.long0 = ((6 * Math.abs(this.zone)) - 183) * D2R;
+ this.x0 = 500000;
+ this.y0 = this.utmSouth ? 10000000 : 0;
+ this.k0 = 0.9996;
+
+ tmerc.init.apply(this);
+ this.forward = tmerc.forward;
+ this.inverse = tmerc.inverse;
+};
+exports.names = ["Universal Transverse Mercator System", "utm"];
+
+},{"./tmerc":61}],63:[function(_dereq_,module,exports){
+var adjust_lon = _dereq_('../common/adjust_lon');
+var HALF_PI = Math.PI/2;
+var EPSLN = 1.0e-10;
+var asinz = _dereq_('../common/asinz');
+/* Initialize the Van Der Grinten projection
+ ----------------------------------------*/
+exports.init = function() {
+ //this.R = 6370997; //Radius of earth
+ this.R = this.a;
+};
+
+exports.forward = function(p) {
+
+ var lon = p.x;
+ var lat = p.y;
+
+ /* Forward equations
+ -----------------*/
+ var dlon = adjust_lon(lon - this.long0);
+ var x, y;
+
+ if (Math.abs(lat) <= EPSLN) {
+ x = this.x0 + this.R * dlon;
+ y = this.y0;
+ }
+ var theta = asinz(2 * Math.abs(lat / Math.PI));
+ if ((Math.abs(dlon) <= EPSLN) || (Math.abs(Math.abs(lat) - HALF_PI) <= EPSLN)) {
+ x = this.x0;
+ if (lat >= 0) {
+ y = this.y0 + Math.PI * this.R * Math.tan(0.5 * theta);
+ }
+ else {
+ y = this.y0 + Math.PI * this.R * -Math.tan(0.5 * theta);
+ }
+ // return(OK);
+ }
+ var al = 0.5 * Math.abs((Math.PI / dlon) - (dlon / Math.PI));
+ var asq = al * al;
+ var sinth = Math.sin(theta);
+ var costh = Math.cos(theta);
+
+ var g = costh / (sinth + costh - 1);
+ var gsq = g * g;
+ var m = g * (2 / sinth - 1);
+ var msq = m * m;
+ var con = Math.PI * this.R * (al * (g - msq) + Math.sqrt(asq * (g - msq) * (g - msq) - (msq + asq) * (gsq - msq))) / (msq + asq);
+ if (dlon < 0) {
+ con = -con;
+ }
+ x = this.x0 + con;
+ //con = Math.abs(con / (Math.PI * this.R));
+ var q = asq + g;
+ con = Math.PI * this.R * (m * q - al * Math.sqrt((msq + asq) * (asq + 1) - q * q)) / (msq + asq);
+ if (lat >= 0) {
+ //y = this.y0 + Math.PI * this.R * Math.sqrt(1 - con * con - 2 * al * con);
+ y = this.y0 + con;
+ }
+ else {
+ //y = this.y0 - Math.PI * this.R * Math.sqrt(1 - con * con - 2 * al * con);
+ y = this.y0 - con;
+ }
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+/* Van Der Grinten inverse equations--mapping x,y to lat/long
+ ---------------------------------------------------------*/
+exports.inverse = function(p) {
+ var lon, lat;
+ var xx, yy, xys, c1, c2, c3;
+ var a1;
+ var m1;
+ var con;
+ var th1;
+ var d;
+
+ /* inverse equations
+ -----------------*/
+ p.x -= this.x0;
+ p.y -= this.y0;
+ con = Math.PI * this.R;
+ xx = p.x / con;
+ yy = p.y / con;
+ xys = xx * xx + yy * yy;
+ c1 = -Math.abs(yy) * (1 + xys);
+ c2 = c1 - 2 * yy * yy + xx * xx;
+ c3 = -2 * c1 + 1 + 2 * yy * yy + xys * xys;
+ d = yy * yy / c3 + (2 * c2 * c2 * c2 / c3 / c3 / c3 - 9 * c1 * c2 / c3 / c3) / 27;
+ a1 = (c1 - c2 * c2 / 3 / c3) / c3;
+ m1 = 2 * Math.sqrt(-a1 / 3);
+ con = ((3 * d) / a1) / m1;
+ if (Math.abs(con) > 1) {
+ if (con >= 0) {
+ con = 1;
+ }
+ else {
+ con = -1;
+ }
+ }
+ th1 = Math.acos(con) / 3;
+ if (p.y >= 0) {
+ lat = (-m1 * Math.cos(th1 + Math.PI / 3) - c2 / 3 / c3) * Math.PI;
+ }
+ else {
+ lat = -(-m1 * Math.cos(th1 + Math.PI / 3) - c2 / 3 / c3) * Math.PI;
+ }
+
+ if (Math.abs(xx) < EPSLN) {
+ lon = this.long0;
+ }
+ else {
+ lon = adjust_lon(this.long0 + Math.PI * (xys - 1 + Math.sqrt(1 + 2 * (xx * xx - yy * yy) + xys * xys)) / 2 / xx);
+ }
+
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["Van_der_Grinten_I", "VanDerGrinten", "vandg"];
+},{"../common/adjust_lon":5,"../common/asinz":6}],64:[function(_dereq_,module,exports){
+var D2R = 0.01745329251994329577;
+var R2D = 57.29577951308232088;
+var PJD_3PARAM = 1;
+var PJD_7PARAM = 2;
+var datum_transform = _dereq_('./datum_transform');
+var adjust_axis = _dereq_('./adjust_axis');
+var proj = _dereq_('./Proj');
+var toPoint = _dereq_('./common/toPoint');
+module.exports = function transform(source, dest, point) {
+ var wgs84;
+ if (Array.isArray(point)) {
+ point = toPoint(point);
+ }
+ function checkNotWGS(source, dest) {
+ return ((source.datum.datum_type === PJD_3PARAM || source.datum.datum_type === PJD_7PARAM) && dest.datumCode !== "WGS84");
+ }
+
+ // Workaround for datum shifts towgs84, if either source or destination projection is not wgs84
+ if (source.datum && dest.datum && (checkNotWGS(source, dest) || checkNotWGS(dest, source))) {
+ wgs84 = new proj('WGS84');
+ transform(source, wgs84, point);
+ source = wgs84;
+ }
+ // DGR, 2010/11/12
+ if (source.axis !== "enu") {
+ adjust_axis(source, false, point);
+ }
+ // Transform source points to long/lat, if they aren't already.
+ if (source.projName === "longlat") {
+ point.x *= D2R; // convert degrees to radians
+ point.y *= D2R;
+ }
+ else {
+ if (source.to_meter) {
+ point.x *= source.to_meter;
+ point.y *= source.to_meter;
+ }
+ source.inverse(point); // Convert Cartesian to longlat
+ }
+ // Adjust for the prime meridian if necessary
+ if (source.from_greenwich) {
+ point.x += source.from_greenwich;
+ }
+
+ // Convert datums if needed, and if possible.
+ point = datum_transform(source.datum, dest.datum, point);
+
+ // Adjust for the prime meridian if necessary
+ if (dest.from_greenwich) {
+ point.x -= dest.from_greenwich;
+ }
+
+ if (dest.projName === "longlat") {
+ // convert radians to decimal degrees
+ point.x *= R2D;
+ point.y *= R2D;
+ }
+ else { // else project
+ dest.forward(point);
+ if (dest.to_meter) {
+ point.x /= dest.to_meter;
+ point.y /= dest.to_meter;
+ }
+ }
+
+ // DGR, 2010/11/12
+ if (dest.axis !== "enu") {
+ adjust_axis(dest, true, point);
+ }
+
+ return point;
+};
+},{"./Proj":2,"./adjust_axis":3,"./common/toPoint":23,"./datum_transform":30}],65:[function(_dereq_,module,exports){
+var D2R = 0.01745329251994329577;
+var extend = _dereq_('./extend');
+
+function mapit(obj, key, v) {
+ obj[key] = v.map(function(aa) {
+ var o = {};
+ sExpr(aa, o);
+ return o;
+ }).reduce(function(a, b) {
+ return extend(a, b);
+ }, {});
+}
+
+function sExpr(v, obj) {
+ var key;
+ if (!Array.isArray(v)) {
+ obj[v] = true;
+ return;
+ }
+ else {
+ key = v.shift();
+ if (key === 'PARAMETER') {
+ key = v.shift();
+ }
+ if (v.length === 1) {
+ if (Array.isArray(v[0])) {
+ obj[key] = {};
+ sExpr(v[0], obj[key]);
+ }
+ else {
+ obj[key] = v[0];
+ }
+ }
+ else if (!v.length) {
+ obj[key] = true;
+ }
+ else if (key === 'TOWGS84') {
+ obj[key] = v;
+ }
+ else {
+ obj[key] = {};
+ if (['UNIT', 'PRIMEM', 'VERT_DATUM'].indexOf(key) > -1) {
+ obj[key] = {
+ name: v[0].toLowerCase(),
+ convert: v[1]
+ };
+ if (v.length === 3) {
+ obj[key].auth = v[2];
+ }
+ }
+ else if (key === 'SPHEROID') {
+ obj[key] = {
+ name: v[0],
+ a: v[1],
+ rf: v[2]
+ };
+ if (v.length === 4) {
+ obj[key].auth = v[3];
+ }
+ }
+ else if (['GEOGCS', 'GEOCCS', 'DATUM', 'VERT_CS', 'COMPD_CS', 'LOCAL_CS', 'FITTED_CS', 'LOCAL_DATUM'].indexOf(key) > -1) {
+ v[0] = ['name', v[0]];
+ mapit(obj, key, v);
+ }
+ else if (v.every(function(aa) {
+ return Array.isArray(aa);
+ })) {
+ mapit(obj, key, v);
+ }
+ else {
+ sExpr(v, obj[key]);
+ }
+ }
+ }
+}
+
+function rename(obj, params) {
+ var outName = params[0];
+ var inName = params[1];
+ if (!(outName in obj) && (inName in obj)) {
+ obj[outName] = obj[inName];
+ if (params.length === 3) {
+ obj[outName] = params[2](obj[outName]);
+ }
+ }
+}
+
+function d2r(input) {
+ return input * D2R;
+}
+
+function cleanWKT(wkt) {
+ if (wkt.type === 'GEOGCS') {
+ wkt.projName = 'longlat';
+ }
+ else if (wkt.type === 'LOCAL_CS') {
+ wkt.projName = 'identity';
+ wkt.local = true;
+ }
+ else {
+ if (typeof wkt.PROJECTION === "object") {
+ wkt.projName = Object.keys(wkt.PROJECTION)[0];
+ }
+ else {
+ wkt.projName = wkt.PROJECTION;
+ }
+ }
+ if (wkt.UNIT) {
+ wkt.units = wkt.UNIT.name.toLowerCase();
+ if (wkt.units === 'metre') {
+ wkt.units = 'meter';
+ }
+ if (wkt.UNIT.convert) {
+ wkt.to_meter = parseFloat(wkt.UNIT.convert, 10);
+ }
+ }
+
+ if (wkt.GEOGCS) {
+ //if(wkt.GEOGCS.PRIMEM&&wkt.GEOGCS.PRIMEM.convert){
+ // wkt.from_greenwich=wkt.GEOGCS.PRIMEM.convert*D2R;
+ //}
+ if (wkt.GEOGCS.DATUM) {
+ wkt.datumCode = wkt.GEOGCS.DATUM.name.toLowerCase();
+ }
+ else {
+ wkt.datumCode = wkt.GEOGCS.name.toLowerCase();
+ }
+ if (wkt.datumCode.slice(0, 2) === 'd_') {
+ wkt.datumCode = wkt.datumCode.slice(2);
+ }
+ if (wkt.datumCode === 'new_zealand_geodetic_datum_1949' || wkt.datumCode === 'new_zealand_1949') {
+ wkt.datumCode = 'nzgd49';
+ }
+ if (wkt.datumCode === "wgs_1984") {
+ if (wkt.PROJECTION === 'Mercator_Auxiliary_Sphere') {
+ wkt.sphere = true;
+ }
+ wkt.datumCode = 'wgs84';
+ }
+ if (wkt.datumCode.slice(-6) === '_ferro') {
+ wkt.datumCode = wkt.datumCode.slice(0, - 6);
+ }
+ if (wkt.datumCode.slice(-8) === '_jakarta') {
+ wkt.datumCode = wkt.datumCode.slice(0, - 8);
+ }
+ if (~wkt.datumCode.indexOf('belge')) {
+ wkt.datumCode = "rnb72";
+ }
+ if (wkt.GEOGCS.DATUM && wkt.GEOGCS.DATUM.SPHEROID) {
+ wkt.ellps = wkt.GEOGCS.DATUM.SPHEROID.name.replace('_19', '').replace(/[Cc]larke\_18/, 'clrk');
+ if (wkt.ellps.toLowerCase().slice(0, 13) === "international") {
+ wkt.ellps = 'intl';
+ }
+
+ wkt.a = wkt.GEOGCS.DATUM.SPHEROID.a;
+ wkt.rf = parseFloat(wkt.GEOGCS.DATUM.SPHEROID.rf, 10);
+ }
+ if (~wkt.datumCode.indexOf('osgb_1936')) {
+ wkt.datumCode = "osgb36";
+ }
+ }
+ if (wkt.b && !isFinite(wkt.b)) {
+ wkt.b = wkt.a;
+ }
+
+ function toMeter(input) {
+ var ratio = wkt.to_meter || 1;
+ return parseFloat(input, 10) * ratio;
+ }
+ var renamer = function(a) {
+ return rename(wkt, a);
+ };
+ var list = [
+ ['standard_parallel_1', 'Standard_Parallel_1'],
+ ['standard_parallel_2', 'Standard_Parallel_2'],
+ ['false_easting', 'False_Easting'],
+ ['false_northing', 'False_Northing'],
+ ['central_meridian', 'Central_Meridian'],
+ ['latitude_of_origin', 'Latitude_Of_Origin'],
+ ['latitude_of_origin', 'Central_Parallel'],
+ ['scale_factor', 'Scale_Factor'],
+ ['k0', 'scale_factor'],
+ ['latitude_of_center', 'Latitude_of_center'],
+ ['lat0', 'latitude_of_center', d2r],
+ ['longitude_of_center', 'Longitude_Of_Center'],
+ ['longc', 'longitude_of_center', d2r],
+ ['x0', 'false_easting', toMeter],
+ ['y0', 'false_northing', toMeter],
+ ['long0', 'central_meridian', d2r],
+ ['lat0', 'latitude_of_origin', d2r],
+ ['lat0', 'standard_parallel_1', d2r],
+ ['lat1', 'standard_parallel_1', d2r],
+ ['lat2', 'standard_parallel_2', d2r],
+ ['alpha', 'azimuth', d2r],
+ ['srsCode', 'name']
+ ];
+ list.forEach(renamer);
+ if (!wkt.long0 && wkt.longc && (wkt.PROJECTION === 'Albers_Conic_Equal_Area' || wkt.PROJECTION === "Lambert_Azimuthal_Equal_Area")) {
+ wkt.long0 = wkt.longc;
+ }
+}
+module.exports = function(wkt, self) {
+ var lisp = JSON.parse(("," + wkt).replace(/\s*\,\s*([A-Z_0-9]+?)(\[)/g, ',["$1",').slice(1).replace(/\s*\,\s*([A-Z_0-9]+?)\]/g, ',"$1"]').replace(/,\["VERTCS".+/,''));
+ var type = lisp.shift();
+ var name = lisp.shift();
+ lisp.unshift(['name', name]);
+ lisp.unshift(['type', type]);
+ lisp.unshift('output');
+ var obj = {};
+ sExpr(lisp, obj);
+ cleanWKT(obj.output);
+ return extend(self, obj.output);
+};
+
+},{"./extend":33}],66:[function(_dereq_,module,exports){
+
+
+
+/**
+ * UTM zones are grouped, and assigned to one of a group of 6
+ * sets.
+ *
+ * {int} @private
+ */
+var NUM_100K_SETS = 6;
+
+/**
+ * The column letters (for easting) of the lower left value, per
+ * set.
+ *
+ * {string} @private
+ */
+var SET_ORIGIN_COLUMN_LETTERS = 'AJSAJS';
+
+/**
+ * The row letters (for northing) of the lower left value, per
+ * set.
+ *
+ * {string} @private
+ */
+var SET_ORIGIN_ROW_LETTERS = 'AFAFAF';
+
+var A = 65; // A
+var I = 73; // I
+var O = 79; // O
+var V = 86; // V
+var Z = 90; // Z
+
+/**
+ * Conversion of lat/lon to MGRS.
+ *
+ * @param {object} ll Object literal with lat and lon properties on a
+ * WGS84 ellipsoid.
+ * @param {int} accuracy Accuracy in digits (5 for 1 m, 4 for 10 m, 3 for
+ * 100 m, 4 for 1000 m or 5 for 10000 m). Optional, default is 5.
+ * @return {string} the MGRS string for the given location and accuracy.
+ */
+exports.forward = function(ll, accuracy) {
+ accuracy = accuracy || 5; // default accuracy 1m
+ return encode(LLtoUTM({
+ lat: ll[1],
+ lon: ll[0]
+ }), accuracy);
+};
+
+/**
+ * Conversion of MGRS to lat/lon.
+ *
+ * @param {string} mgrs MGRS string.
+ * @return {array} An array with left (longitude), bottom (latitude), right
+ * (longitude) and top (latitude) values in WGS84, representing the
+ * bounding box for the provided MGRS reference.
+ */
+exports.inverse = function(mgrs) {
+ var bbox = UTMtoLL(decode(mgrs.toUpperCase()));
+ return [bbox.left, bbox.bottom, bbox.right, bbox.top];
+};
+
+exports.toPoint = function(mgrsStr) {
+ var llbbox = exports.inverse(mgrsStr);
+ return [(llbbox[2] + llbbox[0]) / 2, (llbbox[3] + llbbox[1]) / 2];
+};
+/**
+ * Conversion from degrees to radians.
+ *
+ * @private
+ * @param {number} deg the angle in degrees.
+ * @return {number} the angle in radians.
+ */
+function degToRad(deg) {
+ return (deg * (Math.PI / 180.0));
+}
+
+/**
+ * Conversion from radians to degrees.
+ *
+ * @private
+ * @param {number} rad the angle in radians.
+ * @return {number} the angle in degrees.
+ */
+function radToDeg(rad) {
+ return (180.0 * (rad / Math.PI));
+}
+
+/**
+ * Converts a set of Longitude and Latitude co-ordinates to UTM
+ * using the WGS84 ellipsoid.
+ *
+ * @private
+ * @param {object} ll Object literal with lat and lon properties
+ * representing the WGS84 coordinate to be converted.
+ * @return {object} Object literal containing the UTM value with easting,
+ * northing, zoneNumber and zoneLetter properties, and an optional
+ * accuracy property in digits. Returns null if the conversion failed.
+ */
+function LLtoUTM(ll) {
+ var Lat = ll.lat;
+ var Long = ll.lon;
+ var a = 6378137.0; //ellip.radius;
+ var eccSquared = 0.00669438; //ellip.eccsq;
+ var k0 = 0.9996;
+ var LongOrigin;
+ var eccPrimeSquared;
+ var N, T, C, A, M;
+ var LatRad = degToRad(Lat);
+ var LongRad = degToRad(Long);
+ var LongOriginRad;
+ var ZoneNumber;
+ // (int)
+ ZoneNumber = Math.floor((Long + 180) / 6) + 1;
+
+ //Make sure the longitude 180.00 is in Zone 60
+ if (Long === 180) {
+ ZoneNumber = 60;
+ }
+
+ // Special zone for Norway
+ if (Lat >= 56.0 && Lat < 64.0 && Long >= 3.0 && Long < 12.0) {
+ ZoneNumber = 32;
+ }
+
+ // Special zones for Svalbard
+ if (Lat >= 72.0 && Lat < 84.0) {
+ if (Long >= 0.0 && Long < 9.0) {
+ ZoneNumber = 31;
+ }
+ else if (Long >= 9.0 && Long < 21.0) {
+ ZoneNumber = 33;
+ }
+ else if (Long >= 21.0 && Long < 33.0) {
+ ZoneNumber = 35;
+ }
+ else if (Long >= 33.0 && Long < 42.0) {
+ ZoneNumber = 37;
+ }
+ }
+
+ LongOrigin = (ZoneNumber - 1) * 6 - 180 + 3; //+3 puts origin
+ // in middle of
+ // zone
+ LongOriginRad = degToRad(LongOrigin);
+
+ eccPrimeSquared = (eccSquared) / (1 - eccSquared);
+
+ N = a / Math.sqrt(1 - eccSquared * Math.sin(LatRad) * Math.sin(LatRad));
+ T = Math.tan(LatRad) * Math.tan(LatRad);
+ C = eccPrimeSquared * Math.cos(LatRad) * Math.cos(LatRad);
+ A = Math.cos(LatRad) * (LongRad - LongOriginRad);
+
+ M = a * ((1 - eccSquared / 4 - 3 * eccSquared * eccSquared / 64 - 5 * eccSquared * eccSquared * eccSquared / 256) * LatRad - (3 * eccSquared / 8 + 3 * eccSquared * eccSquared / 32 + 45 * eccSquared * eccSquared * eccSquared / 1024) * Math.sin(2 * LatRad) + (15 * eccSquared * eccSquared / 256 + 45 * eccSquared * eccSquared * eccSquared / 1024) * Math.sin(4 * LatRad) - (35 * eccSquared * eccSquared * eccSquared / 3072) * Math.sin(6 * LatRad));
+
+ var UTMEasting = (k0 * N * (A + (1 - T + C) * A * A * A / 6.0 + (5 - 18 * T + T * T + 72 * C - 58 * eccPrimeSquared) * A * A * A * A * A / 120.0) + 500000.0);
+
+ var UTMNorthing = (k0 * (M + N * Math.tan(LatRad) * (A * A / 2 + (5 - T + 9 * C + 4 * C * C) * A * A * A * A / 24.0 + (61 - 58 * T + T * T + 600 * C - 330 * eccPrimeSquared) * A * A * A * A * A * A / 720.0)));
+ if (Lat < 0.0) {
+ UTMNorthing += 10000000.0; //10000000 meter offset for
+ // southern hemisphere
+ }
+
+ return {
+ northing: Math.round(UTMNorthing),
+ easting: Math.round(UTMEasting),
+ zoneNumber: ZoneNumber,
+ zoneLetter: getLetterDesignator(Lat)
+ };
+}
+
+/**
+ * Converts UTM coords to lat/long, using the WGS84 ellipsoid. This is a convenience
+ * class where the Zone can be specified as a single string eg."60N" which
+ * is then broken down into the ZoneNumber and ZoneLetter.
+ *
+ * @private
+ * @param {object} utm An object literal with northing, easting, zoneNumber
+ * and zoneLetter properties. If an optional accuracy property is
+ * provided (in meters), a bounding box will be returned instead of
+ * latitude and longitude.
+ * @return {object} An object literal containing either lat and lon values
+ * (if no accuracy was provided), or top, right, bottom and left values
+ * for the bounding box calculated according to the provided accuracy.
+ * Returns null if the conversion failed.
+ */
+function UTMtoLL(utm) {
+
+ var UTMNorthing = utm.northing;
+ var UTMEasting = utm.easting;
+ var zoneLetter = utm.zoneLetter;
+ var zoneNumber = utm.zoneNumber;
+ // check the ZoneNummber is valid
+ if (zoneNumber < 0 || zoneNumber > 60) {
+ return null;
+ }
+
+ var k0 = 0.9996;
+ var a = 6378137.0; //ellip.radius;
+ var eccSquared = 0.00669438; //ellip.eccsq;
+ var eccPrimeSquared;
+ var e1 = (1 - Math.sqrt(1 - eccSquared)) / (1 + Math.sqrt(1 - eccSquared));
+ var N1, T1, C1, R1, D, M;
+ var LongOrigin;
+ var mu, phi1Rad;
+
+ // remove 500,000 meter offset for longitude
+ var x = UTMEasting - 500000.0;
+ var y = UTMNorthing;
+
+ // We must know somehow if we are in the Northern or Southern
+ // hemisphere, this is the only time we use the letter So even
+ // if the Zone letter isn't exactly correct it should indicate
+ // the hemisphere correctly
+ if (zoneLetter < 'N') {
+ y -= 10000000.0; // remove 10,000,000 meter offset used
+ // for southern hemisphere
+ }
+
+ // There are 60 zones with zone 1 being at West -180 to -174
+ LongOrigin = (zoneNumber - 1) * 6 - 180 + 3; // +3 puts origin
+ // in middle of
+ // zone
+
+ eccPrimeSquared = (eccSquared) / (1 - eccSquared);
+
+ M = y / k0;
+ mu = M / (a * (1 - eccSquared / 4 - 3 * eccSquared * eccSquared / 64 - 5 * eccSquared * eccSquared * eccSquared / 256));
+
+ phi1Rad = mu + (3 * e1 / 2 - 27 * e1 * e1 * e1 / 32) * Math.sin(2 * mu) + (21 * e1 * e1 / 16 - 55 * e1 * e1 * e1 * e1 / 32) * Math.sin(4 * mu) + (151 * e1 * e1 * e1 / 96) * Math.sin(6 * mu);
+ // double phi1 = ProjMath.radToDeg(phi1Rad);
+
+ N1 = a / Math.sqrt(1 - eccSquared * Math.sin(phi1Rad) * Math.sin(phi1Rad));
+ T1 = Math.tan(phi1Rad) * Math.tan(phi1Rad);
+ C1 = eccPrimeSquared * Math.cos(phi1Rad) * Math.cos(phi1Rad);
+ R1 = a * (1 - eccSquared) / Math.pow(1 - eccSquared * Math.sin(phi1Rad) * Math.sin(phi1Rad), 1.5);
+ D = x / (N1 * k0);
+
+ var lat = phi1Rad - (N1 * Math.tan(phi1Rad) / R1) * (D * D / 2 - (5 + 3 * T1 + 10 * C1 - 4 * C1 * C1 - 9 * eccPrimeSquared) * D * D * D * D / 24 + (61 + 90 * T1 + 298 * C1 + 45 * T1 * T1 - 252 * eccPrimeSquared - 3 * C1 * C1) * D * D * D * D * D * D / 720);
+ lat = radToDeg(lat);
+
+ var lon = (D - (1 + 2 * T1 + C1) * D * D * D / 6 + (5 - 2 * C1 + 28 * T1 - 3 * C1 * C1 + 8 * eccPrimeSquared + 24 * T1 * T1) * D * D * D * D * D / 120) / Math.cos(phi1Rad);
+ lon = LongOrigin + radToDeg(lon);
+
+ var result;
+ if (utm.accuracy) {
+ var topRight = UTMtoLL({
+ northing: utm.northing + utm.accuracy,
+ easting: utm.easting + utm.accuracy,
+ zoneLetter: utm.zoneLetter,
+ zoneNumber: utm.zoneNumber
+ });
+ result = {
+ top: topRight.lat,
+ right: topRight.lon,
+ bottom: lat,
+ left: lon
+ };
+ }
+ else {
+ result = {
+ lat: lat,
+ lon: lon
+ };
+ }
+ return result;
+}
+
+/**
+ * Calculates the MGRS letter designator for the given latitude.
+ *
+ * @private
+ * @param {number} lat The latitude in WGS84 to get the letter designator
+ * for.
+ * @return {char} The letter designator.
+ */
+function getLetterDesignator(lat) {
+ //This is here as an error flag to show that the Latitude is
+ //outside MGRS limits
+ var LetterDesignator = 'Z';
+
+ if ((84 >= lat) && (lat >= 72)) {
+ LetterDesignator = 'X';
+ }
+ else if ((72 > lat) && (lat >= 64)) {
+ LetterDesignator = 'W';
+ }
+ else if ((64 > lat) && (lat >= 56)) {
+ LetterDesignator = 'V';
+ }
+ else if ((56 > lat) && (lat >= 48)) {
+ LetterDesignator = 'U';
+ }
+ else if ((48 > lat) && (lat >= 40)) {
+ LetterDesignator = 'T';
+ }
+ else if ((40 > lat) && (lat >= 32)) {
+ LetterDesignator = 'S';
+ }
+ else if ((32 > lat) && (lat >= 24)) {
+ LetterDesignator = 'R';
+ }
+ else if ((24 > lat) && (lat >= 16)) {
+ LetterDesignator = 'Q';
+ }
+ else if ((16 > lat) && (lat >= 8)) {
+ LetterDesignator = 'P';
+ }
+ else if ((8 > lat) && (lat >= 0)) {
+ LetterDesignator = 'N';
+ }
+ else if ((0 > lat) && (lat >= -8)) {
+ LetterDesignator = 'M';
+ }
+ else if ((-8 > lat) && (lat >= -16)) {
+ LetterDesignator = 'L';
+ }
+ else if ((-16 > lat) && (lat >= -24)) {
+ LetterDesignator = 'K';
+ }
+ else if ((-24 > lat) && (lat >= -32)) {
+ LetterDesignator = 'J';
+ }
+ else if ((-32 > lat) && (lat >= -40)) {
+ LetterDesignator = 'H';
+ }
+ else if ((-40 > lat) && (lat >= -48)) {
+ LetterDesignator = 'G';
+ }
+ else if ((-48 > lat) && (lat >= -56)) {
+ LetterDesignator = 'F';
+ }
+ else if ((-56 > lat) && (lat >= -64)) {
+ LetterDesignator = 'E';
+ }
+ else if ((-64 > lat) && (lat >= -72)) {
+ LetterDesignator = 'D';
+ }
+ else if ((-72 > lat) && (lat >= -80)) {
+ LetterDesignator = 'C';
+ }
+ return LetterDesignator;
+}
+
+/**
+ * Encodes a UTM location as MGRS string.
+ *
+ * @private
+ * @param {object} utm An object literal with easting, northing,
+ * zoneLetter, zoneNumber
+ * @param {number} accuracy Accuracy in digits (1-5).
+ * @return {string} MGRS string for the given UTM location.
+ */
+function encode(utm, accuracy) {
+ var seasting = "" + utm.easting,
+ snorthing = "" + utm.northing;
+
+ return utm.zoneNumber + utm.zoneLetter + get100kID(utm.easting, utm.northing, utm.zoneNumber) + seasting.substr(seasting.length - 5, accuracy) + snorthing.substr(snorthing.length - 5, accuracy);
+}
+
+/**
+ * Get the two letter 100k designator for a given UTM easting,
+ * northing and zone number value.
+ *
+ * @private
+ * @param {number} easting
+ * @param {number} northing
+ * @param {number} zoneNumber
+ * @return the two letter 100k designator for the given UTM location.
+ */
+function get100kID(easting, northing, zoneNumber) {
+ var setParm = get100kSetForZone(zoneNumber);
+ var setColumn = Math.floor(easting / 100000);
+ var setRow = Math.floor(northing / 100000) % 20;
+ return getLetter100kID(setColumn, setRow, setParm);
+}
+
+/**
+ * Given a UTM zone number, figure out the MGRS 100K set it is in.
+ *
+ * @private
+ * @param {number} i An UTM zone number.
+ * @return {number} the 100k set the UTM zone is in.
+ */
+function get100kSetForZone(i) {
+ var setParm = i % NUM_100K_SETS;
+ if (setParm === 0) {
+ setParm = NUM_100K_SETS;
+ }
+
+ return setParm;
+}
+
+/**
+ * Get the two-letter MGRS 100k designator given information
+ * translated from the UTM northing, easting and zone number.
+ *
+ * @private
+ * @param {number} column the column index as it relates to the MGRS
+ * 100k set spreadsheet, created from the UTM easting.
+ * Values are 1-8.
+ * @param {number} row the row index as it relates to the MGRS 100k set
+ * spreadsheet, created from the UTM northing value. Values
+ * are from 0-19.
+ * @param {number} parm the set block, as it relates to the MGRS 100k set
+ * spreadsheet, created from the UTM zone. Values are from
+ * 1-60.
+ * @return two letter MGRS 100k code.
+ */
+function getLetter100kID(column, row, parm) {
+ // colOrigin and rowOrigin are the letters at the origin of the set
+ var index = parm - 1;
+ var colOrigin = SET_ORIGIN_COLUMN_LETTERS.charCodeAt(index);
+ var rowOrigin = SET_ORIGIN_ROW_LETTERS.charCodeAt(index);
+
+ // colInt and rowInt are the letters to build to return
+ var colInt = colOrigin + column - 1;
+ var rowInt = rowOrigin + row;
+ var rollover = false;
+
+ if (colInt > Z) {
+ colInt = colInt - Z + A - 1;
+ rollover = true;
+ }
+
+ if (colInt === I || (colOrigin < I && colInt > I) || ((colInt > I || colOrigin < I) && rollover)) {
+ colInt++;
+ }
+
+ if (colInt === O || (colOrigin < O && colInt > O) || ((colInt > O || colOrigin < O) && rollover)) {
+ colInt++;
+
+ if (colInt === I) {
+ colInt++;
+ }
+ }
+
+ if (colInt > Z) {
+ colInt = colInt - Z + A - 1;
+ }
+
+ if (rowInt > V) {
+ rowInt = rowInt - V + A - 1;
+ rollover = true;
+ }
+ else {
+ rollover = false;
+ }
+
+ if (((rowInt === I) || ((rowOrigin < I) && (rowInt > I))) || (((rowInt > I) || (rowOrigin < I)) && rollover)) {
+ rowInt++;
+ }
+
+ if (((rowInt === O) || ((rowOrigin < O) && (rowInt > O))) || (((rowInt > O) || (rowOrigin < O)) && rollover)) {
+ rowInt++;
+
+ if (rowInt === I) {
+ rowInt++;
+ }
+ }
+
+ if (rowInt > V) {
+ rowInt = rowInt - V + A - 1;
+ }
+
+ var twoLetter = String.fromCharCode(colInt) + String.fromCharCode(rowInt);
+ return twoLetter;
+}
+
+/**
+ * Decode the UTM parameters from a MGRS string.
+ *
+ * @private
+ * @param {string} mgrsString an UPPERCASE coordinate string is expected.
+ * @return {object} An object literal with easting, northing, zoneLetter,
+ * zoneNumber and accuracy (in meters) properties.
+ */
+function decode(mgrsString) {
+
+ if (mgrsString && mgrsString.length === 0) {
+ throw ("MGRSPoint coverting from nothing");
+ }
+
+ var length = mgrsString.length;
+
+ var hunK = null;
+ var sb = "";
+ var testChar;
+ var i = 0;
+
+ // get Zone number
+ while (!(/[A-Z]/).test(testChar = mgrsString.charAt(i))) {
+ if (i >= 2) {
+ throw ("MGRSPoint bad conversion from: " + mgrsString);
+ }
+ sb += testChar;
+ i++;
+ }
+
+ var zoneNumber = parseInt(sb, 10);
+
+ if (i === 0 || i + 3 > length) {
+ // A good MGRS string has to be 4-5 digits long,
+ // ##AAA/#AAA at least.
+ throw ("MGRSPoint bad conversion from: " + mgrsString);
+ }
+
+ var zoneLetter = mgrsString.charAt(i++);
+
+ // Should we check the zone letter here? Why not.
+ if (zoneLetter <= 'A' || zoneLetter === 'B' || zoneLetter === 'Y' || zoneLetter >= 'Z' || zoneLetter === 'I' || zoneLetter === 'O') {
+ throw ("MGRSPoint zone letter " + zoneLetter + " not handled: " + mgrsString);
+ }
+
+ hunK = mgrsString.substring(i, i += 2);
+
+ var set = get100kSetForZone(zoneNumber);
+
+ var east100k = getEastingFromChar(hunK.charAt(0), set);
+ var north100k = getNorthingFromChar(hunK.charAt(1), set);
+
+ // We have a bug where the northing may be 2000000 too low.
+ // How
+ // do we know when to roll over?
+
+ while (north100k < getMinNorthing(zoneLetter)) {
+ north100k += 2000000;
+ }
+
+ // calculate the char index for easting/northing separator
+ var remainder = length - i;
+
+ if (remainder % 2 !== 0) {
+ throw ("MGRSPoint has to have an even number \nof digits after the zone letter and two 100km letters - front \nhalf for easting meters, second half for \nnorthing meters" + mgrsString);
+ }
+
+ var sep = remainder / 2;
+
+ var sepEasting = 0.0;
+ var sepNorthing = 0.0;
+ var accuracyBonus, sepEastingString, sepNorthingString, easting, northing;
+ if (sep > 0) {
+ accuracyBonus = 100000.0 / Math.pow(10, sep);
+ sepEastingString = mgrsString.substring(i, i + sep);
+ sepEasting = parseFloat(sepEastingString) * accuracyBonus;
+ sepNorthingString = mgrsString.substring(i + sep);
+ sepNorthing = parseFloat(sepNorthingString) * accuracyBonus;
+ }
+
+ easting = sepEasting + east100k;
+ northing = sepNorthing + north100k;
+
+ return {
+ easting: easting,
+ northing: northing,
+ zoneLetter: zoneLetter,
+ zoneNumber: zoneNumber,
+ accuracy: accuracyBonus
+ };
+}
+
+/**
+ * Given the first letter from a two-letter MGRS 100k zone, and given the
+ * MGRS table set for the zone number, figure out the easting value that
+ * should be added to the other, secondary easting value.
+ *
+ * @private
+ * @param {char} e The first letter from a two-letter MGRS 100´k zone.
+ * @param {number} set The MGRS table set for the zone number.
+ * @return {number} The easting value for the given letter and set.
+ */
+function getEastingFromChar(e, set) {
+ // colOrigin is the letter at the origin of the set for the
+ // column
+ var curCol = SET_ORIGIN_COLUMN_LETTERS.charCodeAt(set - 1);
+ var eastingValue = 100000.0;
+ var rewindMarker = false;
+
+ while (curCol !== e.charCodeAt(0)) {
+ curCol++;
+ if (curCol === I) {
+ curCol++;
+ }
+ if (curCol === O) {
+ curCol++;
+ }
+ if (curCol > Z) {
+ if (rewindMarker) {
+ throw ("Bad character: " + e);
+ }
+ curCol = A;
+ rewindMarker = true;
+ }
+ eastingValue += 100000.0;
+ }
+
+ return eastingValue;
+}
+
+/**
+ * Given the second letter from a two-letter MGRS 100k zone, and given the
+ * MGRS table set for the zone number, figure out the northing value that
+ * should be added to the other, secondary northing value. You have to
+ * remember that Northings are determined from the equator, and the vertical
+ * cycle of letters mean a 2000000 additional northing meters. This happens
+ * approx. every 18 degrees of latitude. This method does *NOT* count any
+ * additional northings. You have to figure out how many 2000000 meters need
+ * to be added for the zone letter of the MGRS coordinate.
+ *
+ * @private
+ * @param {char} n Second letter of the MGRS 100k zone
+ * @param {number} set The MGRS table set number, which is dependent on the
+ * UTM zone number.
+ * @return {number} The northing value for the given letter and set.
+ */
+function getNorthingFromChar(n, set) {
+
+ if (n > 'V') {
+ throw ("MGRSPoint given invalid Northing " + n);
+ }
+
+ // rowOrigin is the letter at the origin of the set for the
+ // column
+ var curRow = SET_ORIGIN_ROW_LETTERS.charCodeAt(set - 1);
+ var northingValue = 0.0;
+ var rewindMarker = false;
+
+ while (curRow !== n.charCodeAt(0)) {
+ curRow++;
+ if (curRow === I) {
+ curRow++;
+ }
+ if (curRow === O) {
+ curRow++;
+ }
+ // fixing a bug making whole application hang in this loop
+ // when 'n' is a wrong character
+ if (curRow > V) {
+ if (rewindMarker) { // making sure that this loop ends
+ throw ("Bad character: " + n);
+ }
+ curRow = A;
+ rewindMarker = true;
+ }
+ northingValue += 100000.0;
+ }
+
+ return northingValue;
+}
+
+/**
+ * The function getMinNorthing returns the minimum northing value of a MGRS
+ * zone.
+ *
+ * Ported from Geotrans' c Lattitude_Band_Value structure table.
+ *
+ * @private
+ * @param {char} zoneLetter The MGRS zone to get the min northing for.
+ * @return {number}
+ */
+function getMinNorthing(zoneLetter) {
+ var northing;
+ switch (zoneLetter) {
+ case 'C':
+ northing = 1100000.0;
+ break;
+ case 'D':
+ northing = 2000000.0;
+ break;
+ case 'E':
+ northing = 2800000.0;
+ break;
+ case 'F':
+ northing = 3700000.0;
+ break;
+ case 'G':
+ northing = 4600000.0;
+ break;
+ case 'H':
+ northing = 5500000.0;
+ break;
+ case 'J':
+ northing = 6400000.0;
+ break;
+ case 'K':
+ northing = 7300000.0;
+ break;
+ case 'L':
+ northing = 8200000.0;
+ break;
+ case 'M':
+ northing = 9100000.0;
+ break;
+ case 'N':
+ northing = 0.0;
+ break;
+ case 'P':
+ northing = 800000.0;
+ break;
+ case 'Q':
+ northing = 1700000.0;
+ break;
+ case 'R':
+ northing = 2600000.0;
+ break;
+ case 'S':
+ northing = 3500000.0;
+ break;
+ case 'T':
+ northing = 4400000.0;
+ break;
+ case 'U':
+ northing = 5300000.0;
+ break;
+ case 'V':
+ northing = 6200000.0;
+ break;
+ case 'W':
+ northing = 7000000.0;
+ break;
+ case 'X':
+ northing = 7900000.0;
+ break;
+ default:
+ northing = -1.0;
+ }
+ if (northing >= 0.0) {
+ return northing;
+ }
+ else {
+ throw ("Invalid zone letter: " + zoneLetter);
+ }
+
+}
+
+},{}],67:[function(_dereq_,module,exports){
+module.exports={
+ "name": "proj4",
+ "version": "2.3.3",
+ "description": "Proj4js is a JavaScript library to transform point coordinates from one coordinate system to another, including datum transformations.",
+ "main": "lib/index.js",
+ "directories": {
+ "test": "test",
+ "doc": "docs"
+ },
+ "scripts": {
+ "test": "./node_modules/istanbul/lib/cli.js test ./node_modules/mocha/bin/_mocha test/test.js"
+ },
+ "repository": {
+ "type": "git",
+ "url": "git://github.com/proj4js/proj4js.git"
+ },
+ "author": "",
+ "license": "MIT",
+ "jam": {
+ "main": "dist/proj4.js",
+ "include": [
+ "dist/proj4.js",
+ "README.md",
+ "AUTHORS",
+ "LICENSE.md"
+ ]
+ },
+ "devDependencies": {
+ "grunt-cli": "~0.1.13",
+ "grunt": "~0.4.2",
+ "grunt-contrib-connect": "~0.6.0",
+ "grunt-contrib-jshint": "~0.8.0",
+ "chai": "~1.8.1",
+ "mocha": "~1.17.1",
+ "grunt-mocha-phantomjs": "~0.4.0",
+ "browserify": "~3.24.5",
+ "grunt-browserify": "~1.3.0",
+ "grunt-contrib-uglify": "~0.3.2",
+ "curl": "git://github.com/cujojs/curl.git",
+ "istanbul": "~0.2.4",
+ "tin": "~0.4.0"
+ },
+ "dependencies": {
+ "mgrs": "0.0.0"
+ }
+}
+
+},{}],"./includedProjections":[function(_dereq_,module,exports){
+module.exports=_dereq_('gWUPNW');
+},{}],"gWUPNW":[function(_dereq_,module,exports){
+var projs = [
+ _dereq_('./lib/projections/tmerc'),
+ _dereq_('./lib/projections/utm'),
+ _dereq_('./lib/projections/sterea'),
+ _dereq_('./lib/projections/stere'),
+ _dereq_('./lib/projections/somerc'),
+ _dereq_('./lib/projections/omerc'),
+ _dereq_('./lib/projections/lcc'),
+ _dereq_('./lib/projections/krovak'),
+ _dereq_('./lib/projections/cass'),
+ _dereq_('./lib/projections/laea'),
+ _dereq_('./lib/projections/aea'),
+ _dereq_('./lib/projections/gnom'),
+ _dereq_('./lib/projections/cea'),
+ _dereq_('./lib/projections/eqc'),
+ _dereq_('./lib/projections/poly'),
+ _dereq_('./lib/projections/nzmg'),
+ _dereq_('./lib/projections/mill'),
+ _dereq_('./lib/projections/sinu'),
+ _dereq_('./lib/projections/moll'),
+ _dereq_('./lib/projections/eqdc'),
+ _dereq_('./lib/projections/vandg'),
+ _dereq_('./lib/projections/aeqd')
+];
+module.exports = function(proj4){
+ projs.forEach(function(proj){
+ proj4.Proj.projections.add(proj);
+ });
+}
+},{"./lib/projections/aea":39,"./lib/projections/aeqd":40,"./lib/projections/cass":41,"./lib/projections/cea":42,"./lib/projections/eqc":43,"./lib/projections/eqdc":44,"./lib/projections/gnom":46,"./lib/projections/krovak":47,"./lib/projections/laea":48,"./lib/projections/lcc":49,"./lib/projections/mill":52,"./lib/projections/moll":53,"./lib/projections/nzmg":54,"./lib/projections/omerc":55,"./lib/projections/poly":56,"./lib/projections/sinu":57,"./lib/projections/somerc":58,"./lib/proje [...]
+(35)
+});
\ No newline at end of file
diff --git a/dist/proj4.js b/dist/proj4.js
new file mode 100644
index 0000000..e947345
--- /dev/null
+++ b/dist/proj4.js
@@ -0,0 +1,3 @@
+!function(a){if("object"==typeof exports)module.exports=a();else if("function"==typeof define&&define.amd)define(a);else{var b;"undefined"!=typeof window?b=window:"undefined"!=typeof global?b=global:"undefined"!=typeof self&&(b=self),b.proj4=a()}}(function(){return function a(b,c,d){function e(g,h){if(!c[g]){if(!b[g]){var i="function"==typeof require&&require;if(!h&&i)return i(g,!0);if(f)return f(g,!0);throw new Error("Cannot find module '"+g+"'")}var j=c[g]={exports:{}};b[g][0].call(j.e [...]
+},c.inverse=function(a){var b,c,e,g,h,i;return a.x=(a.x-this.x0)/this.a,a.y=(a.y-this.y0)/this.a,a.x/=this.k0,a.y/=this.k0,(b=Math.sqrt(a.x*a.x+a.y*a.y))?(g=Math.atan2(b,this.rc),c=Math.sin(g),e=Math.cos(g),i=f(e*this.sin_p14+a.y*c*this.cos_p14/b),h=Math.atan2(a.x*c,b*this.cos_p14*e-a.y*this.sin_p14*c),h=d(this.long0+h)):(i=this.phic0,h=0),a.x=h,a.y=i,a},c.names=["gnom"]},{"../common/adjust_lon":5,"../common/asinz":6}],47:[function(a,b,c){var d=a("../common/adjust_lon");c.init=function() [...]
+var c=function(b){return e(a,b)},d=[["standard_parallel_1","Standard_Parallel_1"],["standard_parallel_2","Standard_Parallel_2"],["false_easting","False_Easting"],["false_northing","False_Northing"],["central_meridian","Central_Meridian"],["latitude_of_origin","Latitude_Of_Origin"],["latitude_of_origin","Central_Parallel"],["scale_factor","Scale_Factor"],["k0","scale_factor"],["latitude_of_center","Latitude_of_center"],["lat0","latitude_of_center",f],["longitude_of_center","Longitude_Of_C [...]
\ No newline at end of file
diff --git a/lib/Point.js b/lib/Point.js
new file mode 100644
index 0000000..f4073df
--- /dev/null
+++ b/lib/Point.js
@@ -0,0 +1,35 @@
+var mgrs = require('mgrs');
+
+function Point(x, y, z) {
+ if (!(this instanceof Point)) {
+ return new Point(x, y, z);
+ }
+ if (Array.isArray(x)) {
+ this.x = x[0];
+ this.y = x[1];
+ this.z = x[2] || 0.0;
+ }else if(typeof x === 'object'){
+ this.x = x.x;
+ this.y = x.y;
+ this.z = x.z || 0.0;
+ } else if (typeof x === 'string' && typeof y === 'undefined') {
+ var coords = x.split(',');
+ this.x = parseFloat(coords[0], 10);
+ this.y = parseFloat(coords[1], 10);
+ this.z = parseFloat(coords[2], 10) || 0.0;
+ }
+ else {
+ this.x = x;
+ this.y = y;
+ this.z = z || 0.0;
+ }
+ console.warn('proj4.Point will be removed in version 3, use proj4.toPoint');
+}
+
+Point.fromMGRS = function(mgrsStr) {
+ return new Point(mgrs.toPoint(mgrsStr));
+};
+Point.prototype.toMGRS = function(accuracy) {
+ return mgrs.forward([this.x, this.y], accuracy);
+};
+module.exports = Point;
\ No newline at end of file
diff --git a/lib/Proj.js b/lib/Proj.js
new file mode 100644
index 0000000..f4a55bd
--- /dev/null
+++ b/lib/Proj.js
@@ -0,0 +1,33 @@
+var parseCode = require("./parseCode");
+var extend = require('./extend');
+var projections = require('./projections');
+var deriveConstants = require('./deriveConstants');
+
+function Projection(srsCode,callback) {
+ if (!(this instanceof Projection)) {
+ return new Projection(srsCode);
+ }
+ callback = callback || function(error){
+ if(error){
+ throw error;
+ }
+ };
+ var json = parseCode(srsCode);
+ if(typeof json !== 'object'){
+ callback(srsCode);
+ return;
+ }
+ var modifiedJSON = deriveConstants(json);
+ var ourProj = Projection.projections.get(modifiedJSON.projName);
+ if(ourProj){
+ extend(this, modifiedJSON);
+ extend(this, ourProj);
+ this.init();
+ callback(null, this);
+ }else{
+ callback(srsCode);
+ }
+}
+Projection.projections = projections;
+Projection.projections.start();
+module.exports = Projection;
diff --git a/lib/adjust_axis.js b/lib/adjust_axis.js
new file mode 100644
index 0000000..1690be1
--- /dev/null
+++ b/lib/adjust_axis.js
@@ -0,0 +1,51 @@
+module.exports = function(crs, denorm, point) {
+ var xin = point.x,
+ yin = point.y,
+ zin = point.z || 0.0;
+ var v, t, i;
+ for (i = 0; i < 3; i++) {
+ if (denorm && i === 2 && point.z === undefined) {
+ continue;
+ }
+ if (i === 0) {
+ v = xin;
+ t = 'x';
+ }
+ else if (i === 1) {
+ v = yin;
+ t = 'y';
+ }
+ else {
+ v = zin;
+ t = 'z';
+ }
+ switch (crs.axis[i]) {
+ case 'e':
+ point[t] = v;
+ break;
+ case 'w':
+ point[t] = -v;
+ break;
+ case 'n':
+ point[t] = v;
+ break;
+ case 's':
+ point[t] = -v;
+ break;
+ case 'u':
+ if (point[t] !== undefined) {
+ point.z = v;
+ }
+ break;
+ case 'd':
+ if (point[t] !== undefined) {
+ point.z = -v;
+ }
+ break;
+ default:
+ //console.log("ERROR: unknow axis ("+crs.axis[i]+") - check definition of "+crs.projName);
+ return null;
+ }
+ }
+ return point;
+};
diff --git a/lib/common/acosh.js b/lib/common/acosh.js
new file mode 100644
index 0000000..eaf13d3
--- /dev/null
+++ b/lib/common/acosh.js
@@ -0,0 +1,3 @@
+module.exports = function(x) {
+ return 2 * Math.log(Math.sqrt((x + 1) / 2) + Math.sqrt((x - 1) / 2));
+};
\ No newline at end of file
diff --git a/lib/common/adjust_lat.js b/lib/common/adjust_lat.js
new file mode 100644
index 0000000..057410c
--- /dev/null
+++ b/lib/common/adjust_lat.js
@@ -0,0 +1,6 @@
+var HALF_PI = Math.PI/2;
+var sign = require('./sign');
+
+module.exports = function(x) {
+ return (Math.abs(x) < HALF_PI) ? x : (x - (sign(x) * Math.PI));
+};
\ No newline at end of file
diff --git a/lib/common/adjust_lon.js b/lib/common/adjust_lon.js
new file mode 100644
index 0000000..371f642
--- /dev/null
+++ b/lib/common/adjust_lon.js
@@ -0,0 +1,11 @@
+var TWO_PI = Math.PI * 2;
+// SPI is slightly greater than Math.PI, so values that exceed the -180..180
+// degree range by a tiny amount don't get wrapped. This prevents points that
+// have drifted from their original location along the 180th meridian (due to
+// floating point error) from changing their sign.
+var SPI = 3.14159265359;
+var sign = require('./sign');
+
+module.exports = function(x) {
+ return (Math.abs(x) <= SPI) ? x : (x - (sign(x) * TWO_PI));
+};
\ No newline at end of file
diff --git a/lib/common/asinh.js b/lib/common/asinh.js
new file mode 100644
index 0000000..93cba42
--- /dev/null
+++ b/lib/common/asinh.js
@@ -0,0 +1,4 @@
+module.exports = function(x) {
+ var s = (x >= 0 ? 1 : -1);
+ return s * (Math.log(Math.abs(x) + Math.sqrt(x * x + 1)));
+};
\ No newline at end of file
diff --git a/lib/common/asinz.js b/lib/common/asinz.js
new file mode 100644
index 0000000..5a6ef16
--- /dev/null
+++ b/lib/common/asinz.js
@@ -0,0 +1,6 @@
+module.exports = function(x) {
+ if (Math.abs(x) > 1) {
+ x = (x > 1) ? 1 : -1;
+ }
+ return Math.asin(x);
+};
\ No newline at end of file
diff --git a/lib/common/atanh.js b/lib/common/atanh.js
new file mode 100644
index 0000000..15ed016
--- /dev/null
+++ b/lib/common/atanh.js
@@ -0,0 +1,3 @@
+module.exports = function(x) {
+ return Math.log((x - 1) / (x + 1)) / 2;
+};
\ No newline at end of file
diff --git a/lib/common/cosh.js b/lib/common/cosh.js
new file mode 100644
index 0000000..fcb1363
--- /dev/null
+++ b/lib/common/cosh.js
@@ -0,0 +1,5 @@
+module.exports = function(x) {
+ var r = Math.exp(x);
+ r = (r + 1 / r) / 2;
+ return r;
+};
\ No newline at end of file
diff --git a/lib/common/e0fn.js b/lib/common/e0fn.js
new file mode 100644
index 0000000..e880467
--- /dev/null
+++ b/lib/common/e0fn.js
@@ -0,0 +1,3 @@
+module.exports = function(x) {
+ return (1 - 0.25 * x * (1 + x / 16 * (3 + 1.25 * x)));
+};
\ No newline at end of file
diff --git a/lib/common/e1fn.js b/lib/common/e1fn.js
new file mode 100644
index 0000000..32b46f5
--- /dev/null
+++ b/lib/common/e1fn.js
@@ -0,0 +1,3 @@
+module.exports = function(x) {
+ return (0.375 * x * (1 + 0.25 * x * (1 + 0.46875 * x)));
+};
\ No newline at end of file
diff --git a/lib/common/e2fn.js b/lib/common/e2fn.js
new file mode 100644
index 0000000..756135f
--- /dev/null
+++ b/lib/common/e2fn.js
@@ -0,0 +1,3 @@
+module.exports = function(x) {
+ return (0.05859375 * x * x * (1 + 0.75 * x));
+};
\ No newline at end of file
diff --git a/lib/common/e3fn.js b/lib/common/e3fn.js
new file mode 100644
index 0000000..d7ffc88
--- /dev/null
+++ b/lib/common/e3fn.js
@@ -0,0 +1,3 @@
+module.exports = function(x) {
+ return (x * x * x * (35 / 3072));
+};
\ No newline at end of file
diff --git a/lib/common/fL.js b/lib/common/fL.js
new file mode 100644
index 0000000..f834d9a
--- /dev/null
+++ b/lib/common/fL.js
@@ -0,0 +1,5 @@
+var HALF_PI = Math.PI/2;
+
+module.exports = function(x, L) {
+ return 2 * Math.atan(x * Math.exp(L)) - HALF_PI;
+};
\ No newline at end of file
diff --git a/lib/common/gN.js b/lib/common/gN.js
new file mode 100644
index 0000000..85dec88
--- /dev/null
+++ b/lib/common/gN.js
@@ -0,0 +1,4 @@
+module.exports = function(a, e, sinphi) {
+ var temp = e * sinphi;
+ return a / Math.sqrt(1 - temp * temp);
+};
\ No newline at end of file
diff --git a/lib/common/imlfn.js b/lib/common/imlfn.js
new file mode 100644
index 0000000..a8e2a08
--- /dev/null
+++ b/lib/common/imlfn.js
@@ -0,0 +1,16 @@
+module.exports = function(ml, e0, e1, e2, e3) {
+ var phi;
+ var dphi;
+
+ phi = ml / e0;
+ for (var i = 0; i < 15; i++) {
+ dphi = (ml - (e0 * phi - e1 * Math.sin(2 * phi) + e2 * Math.sin(4 * phi) - e3 * Math.sin(6 * phi))) / (e0 - 2 * e1 * Math.cos(2 * phi) + 4 * e2 * Math.cos(4 * phi) - 6 * e3 * Math.cos(6 * phi));
+ phi += dphi;
+ if (Math.abs(dphi) <= 0.0000000001) {
+ return phi;
+ }
+ }
+
+ //..reportError("IMLFN-CONV:Latitude failed to converge after 15 iterations");
+ return NaN;
+};
\ No newline at end of file
diff --git a/lib/common/inverseNadCvt.js b/lib/common/inverseNadCvt.js
new file mode 100644
index 0000000..d90e0f2
--- /dev/null
+++ b/lib/common/inverseNadCvt.js
@@ -0,0 +1,30 @@
+var nad_intr = require('./nad_intr');
+var adjust_lon = require('./adjust_lon');
+module.exports = function(t, val, tb, ct) {
+ if (isNaN(t.x)) {
+ return val;
+ }
+ t.x = tb.x + t.x;
+ t.y = tb.y - t.y;
+ var i = 9,
+ tol = 1e-12;
+ var dif, del;
+ do {
+ del = nad_intr(t, ct);
+ if (isNaN(del.x)) {
+ break;
+ }
+ dif = {
+ "x": t.x - del.x - tb.x,
+ "y": t.y + del.y - tb.y
+ };
+ t.x -= dif.x;
+ t.y -= dif.y;
+ } while (i-- && Math.abs(dif.x) > tol && Math.abs(dif.y) > tol);
+ if (i < 0) {
+ return val;
+ }
+ val.x = adjust_lon(t.x + ct.ll[0]);
+ val.y = t.y + ct.ll[1];
+ return val;
+};
\ No newline at end of file
diff --git a/lib/common/invlatiso.js b/lib/common/invlatiso.js
new file mode 100644
index 0000000..e0e2ce5
--- /dev/null
+++ b/lib/common/invlatiso.js
@@ -0,0 +1,13 @@
+var fL = require('./fL');
+
+module.exports = function(eccent, ts) {
+ var phi = fL(1, ts);
+ var Iphi = 0;
+ var con = 0;
+ do {
+ Iphi = phi;
+ con = eccent * Math.sin(Iphi);
+ phi = fL(Math.exp(eccent * Math.log((1 + con) / (1 - con)) / 2), ts);
+ } while (Math.abs(phi - Iphi) > 1.0e-12);
+ return phi;
+};
\ No newline at end of file
diff --git a/lib/common/iqsfnz.js b/lib/common/iqsfnz.js
new file mode 100644
index 0000000..6c8c952
--- /dev/null
+++ b/lib/common/iqsfnz.js
@@ -0,0 +1,32 @@
+var HALF_PI = Math.PI/2;
+
+module.exports = function(eccent, q) {
+ var temp = 1 - (1 - eccent * eccent) / (2 * eccent) * Math.log((1 - eccent) / (1 + eccent));
+ if (Math.abs(Math.abs(q) - temp) < 1.0E-6) {
+ if (q < 0) {
+ return (-1 * HALF_PI);
+ }
+ else {
+ return HALF_PI;
+ }
+ }
+ //var phi = 0.5* q/(1-eccent*eccent);
+ var phi = Math.asin(0.5 * q);
+ var dphi;
+ var sin_phi;
+ var cos_phi;
+ var con;
+ for (var i = 0; i < 30; i++) {
+ sin_phi = Math.sin(phi);
+ cos_phi = Math.cos(phi);
+ con = eccent * sin_phi;
+ dphi = Math.pow(1 - con * con, 2) / (2 * cos_phi) * (q / (1 - eccent * eccent) - sin_phi / (1 - con * con) + 0.5 / eccent * Math.log((1 - con) / (1 + con)));
+ phi += dphi;
+ if (Math.abs(dphi) <= 0.0000000001) {
+ return phi;
+ }
+ }
+
+ //console.log("IQSFN-CONV:Latitude failed to converge after 30 iterations");
+ return NaN;
+};
\ No newline at end of file
diff --git a/lib/common/latiso.js b/lib/common/latiso.js
new file mode 100644
index 0000000..f60d06c
--- /dev/null
+++ b/lib/common/latiso.js
@@ -0,0 +1,16 @@
+var HALF_PI = Math.PI/2;
+
+module.exports = function(eccent, phi, sinphi) {
+ if (Math.abs(phi) > HALF_PI) {
+ return Number.NaN;
+ }
+ if (phi === HALF_PI) {
+ return Number.POSITIVE_INFINITY;
+ }
+ if (phi === -1 * HALF_PI) {
+ return Number.NEGATIVE_INFINITY;
+ }
+
+ var con = eccent * sinphi;
+ return Math.log(Math.tan((HALF_PI + phi) / 2)) + eccent * Math.log((1 - con) / (1 + con)) / 2;
+};
\ No newline at end of file
diff --git a/lib/common/mlfn.js b/lib/common/mlfn.js
new file mode 100644
index 0000000..f84d02e
--- /dev/null
+++ b/lib/common/mlfn.js
@@ -0,0 +1,3 @@
+module.exports = function(e0, e1, e2, e3, phi) {
+ return (e0 * phi - e1 * Math.sin(2 * phi) + e2 * Math.sin(4 * phi) - e3 * Math.sin(6 * phi));
+};
\ No newline at end of file
diff --git a/lib/common/msfnz.js b/lib/common/msfnz.js
new file mode 100644
index 0000000..18ce51a
--- /dev/null
+++ b/lib/common/msfnz.js
@@ -0,0 +1,4 @@
+module.exports = function(eccent, sinphi, cosphi) {
+ var con = eccent * sinphi;
+ return cosphi / (Math.sqrt(1 - con * con));
+};
\ No newline at end of file
diff --git a/lib/common/nadInterBreakout.js b/lib/common/nadInterBreakout.js
new file mode 100644
index 0000000..f37a967
--- /dev/null
+++ b/lib/common/nadInterBreakout.js
@@ -0,0 +1,26 @@
+module.exports = function(indx, frct, letter, number, ct) {
+ var inx;
+ if (indx[letter] < 0) {
+ if (!(indx[letter] === -1 && frct[letter] > 0.99999999999)) {
+ return false;
+ }
+ indx[letter]++;
+ frct[letter] = 0;
+ }
+ else {
+ inx = indx[letter] + 1;
+ if (inx >= ct.lim[number]) {
+ if (!(inx === ct.lim[number] && frct[letter] < 1e-11)) {
+ return false;
+ }
+ if (letter === 'x') {
+ indx[letter]--;
+ }
+ else {
+ indx[letter]++;
+ }
+ frct[letter] = 1;
+ }
+ }
+ return [indx, frct];
+};
\ No newline at end of file
diff --git a/lib/common/nad_cvt.js b/lib/common/nad_cvt.js
new file mode 100644
index 0000000..158ccff
--- /dev/null
+++ b/lib/common/nad_cvt.js
@@ -0,0 +1,31 @@
+var adjust_lon = require('./adjust_lon');
+var nad_intr = require('./nad_intr');
+var inverseNadCvt = require('./inverseNadCvt');
+
+module.exports = function(pin, inverse, ct) {
+ var val = {
+ "x": Number.NaN,
+ "y": Number.NaN
+ };
+ if (isNaN(pin.x)) {
+ return val;
+ }
+ var tb = {
+ "x": pin.x,
+ "y": pin.y
+ };
+ tb.x -= ct.ll[0];
+ tb.y -= ct.ll[1];
+ tb.x = adjust_lon(tb.x - Math.PI) + Math.PI;
+ var t = nad_intr(tb, ct);
+ if (inverse) {
+ return inverseNadCvt(t, val, tb, ct);
+ }
+ else {
+ if (!isNaN(t.x)) {
+ val.x = pin.x - t.x;
+ val.y = pin.y + t.y;
+ }
+ }
+ return val;
+};
\ No newline at end of file
diff --git a/lib/common/nad_intr.js b/lib/common/nad_intr.js
new file mode 100644
index 0000000..f10bdcc
--- /dev/null
+++ b/lib/common/nad_intr.js
@@ -0,0 +1,67 @@
+var nadInterBreakout = require("./nadInterBreakout");
+
+module.exports = function(pin, ct) {
+ // force computation by decreasing by 1e-7 to be as closed as possible
+ // from computation under C:C++ by leveraging rounding problems ...
+ var t = {
+ x: (pin.x - 1e-7) / ct.del[0],
+ y: (pin.y - 1e-7) / ct.del[1]
+ };
+ var indx = {
+ x: Math.floor(t.x),
+ y: Math.floor(t.y)
+ };
+ var frct = {
+ x: t.x - 1 * indx.x,
+ y: t.y - 1 * indx.y
+ };
+ var val = {
+ x: Number.NaN,
+ y: Number.NaN
+ };
+
+
+ var temp = nadInterBreakout(indx, frct, 'x', 0, ct);
+ if (temp) {
+ indx = temp[0];
+ frct = temp[1];
+ }
+ else {
+ return val;
+ }
+ temp = nadInterBreakout(indx, frct, 'y', 1, ct);
+ if (temp) {
+ indx = temp[0];
+ frct = temp[1];
+ }
+ else {
+ return val;
+ }
+ var inx = (indx.y * ct.lim[0]) + indx.x;
+ var f00 = {
+ x: ct.cvs[inx][0],
+ y: ct.cvs[inx][1]
+ };
+ inx++;
+ var f10 = {
+ x: ct.cvs[inx][0],
+ y: ct.cvs[inx][1]
+ };
+ inx += ct.lim[0];
+ var f11 = {
+ x: ct.cvs[inx][0],
+ y: ct.cvs[inx][1]
+ };
+ inx--;
+ var f01 = {
+ x: ct.cvs[inx][0],
+ y: ct.cvs[inx][1]
+ };
+ var m11 = frct.x * frct.y,
+ m10 = frct.x * (1 - frct.y),
+ m00 = (1 - frct.x) * (1 - frct.y),
+ m01 = (1 - frct.x) * frct.y;
+ val.x = (m00 * f00.x + m10 * f10.x + m01 * f01.x + m11 * f11.x);
+ val.y = (m00 * f00.y + m10 * f10.y + m01 * f01.y + m11 * f11.y);
+ return val;
+};
\ No newline at end of file
diff --git a/lib/common/phi2z.js b/lib/common/phi2z.js
new file mode 100644
index 0000000..a29e8a3
--- /dev/null
+++ b/lib/common/phi2z.js
@@ -0,0 +1,16 @@
+var HALF_PI = Math.PI/2;
+module.exports = function(eccent, ts) {
+ var eccnth = 0.5 * eccent;
+ var con, dphi;
+ var phi = HALF_PI - 2 * Math.atan(ts);
+ for (var i = 0; i <= 15; i++) {
+ con = eccent * Math.sin(phi);
+ dphi = HALF_PI - 2 * Math.atan(ts * (Math.pow(((1 - con) / (1 + con)), eccnth))) - phi;
+ phi += dphi;
+ if (Math.abs(dphi) <= 0.0000000001) {
+ return phi;
+ }
+ }
+ //console.log("phi2z has NoConvergence");
+ return -9999;
+};
\ No newline at end of file
diff --git a/lib/common/pj_enfn.js b/lib/common/pj_enfn.js
new file mode 100644
index 0000000..d71c565
--- /dev/null
+++ b/lib/common/pj_enfn.js
@@ -0,0 +1,24 @@
+var C00 = 1;
+var C02 = 0.25;
+var C04 = 0.046875;
+var C06 = 0.01953125;
+var C08 = 0.01068115234375;
+var C22 = 0.75;
+var C44 = 0.46875;
+var C46 = 0.01302083333333333333;
+var C48 = 0.00712076822916666666;
+var C66 = 0.36458333333333333333;
+var C68 = 0.00569661458333333333;
+var C88 = 0.3076171875;
+
+module.exports = function(es) {
+ var en = [];
+ en[0] = C00 - es * (C02 + es * (C04 + es * (C06 + es * C08)));
+ en[1] = es * (C22 - es * (C04 + es * (C06 + es * C08)));
+ var t = es * es;
+ en[2] = t * (C44 - es * (C46 + es * C48));
+ t *= es;
+ en[3] = t * (C66 - es * C68);
+ en[4] = t * es * C88;
+ return en;
+};
\ No newline at end of file
diff --git a/lib/common/pj_inv_mlfn.js b/lib/common/pj_inv_mlfn.js
new file mode 100644
index 0000000..64aaa31
--- /dev/null
+++ b/lib/common/pj_inv_mlfn.js
@@ -0,0 +1,20 @@
+var pj_mlfn = require("./pj_mlfn");
+var EPSLN = 1.0e-10;
+var MAX_ITER = 20;
+module.exports = function(arg, es, en) {
+ var k = 1 / (1 - es);
+ var phi = arg;
+ for (var i = MAX_ITER; i; --i) { /* rarely goes over 2 iterations */
+ var s = Math.sin(phi);
+ var t = 1 - es * s * s;
+ //t = this.pj_mlfn(phi, s, Math.cos(phi), en) - arg;
+ //phi -= t * (t * Math.sqrt(t)) * k;
+ t = (pj_mlfn(phi, s, Math.cos(phi), en) - arg) * (t * Math.sqrt(t)) * k;
+ phi -= t;
+ if (Math.abs(t) < EPSLN) {
+ return phi;
+ }
+ }
+ //..reportError("cass:pj_inv_mlfn: Convergence error");
+ return phi;
+};
\ No newline at end of file
diff --git a/lib/common/pj_mlfn.js b/lib/common/pj_mlfn.js
new file mode 100644
index 0000000..01156b9
--- /dev/null
+++ b/lib/common/pj_mlfn.js
@@ -0,0 +1,5 @@
+module.exports = function(phi, sphi, cphi, en) {
+ cphi *= sphi;
+ sphi *= sphi;
+ return (en[0] * phi - cphi * (en[1] + sphi * (en[2] + sphi * (en[3] + sphi * en[4]))));
+};
\ No newline at end of file
diff --git a/lib/common/qsfnz.js b/lib/common/qsfnz.js
new file mode 100644
index 0000000..bd6e515
--- /dev/null
+++ b/lib/common/qsfnz.js
@@ -0,0 +1,10 @@
+module.exports = function(eccent, sinphi) {
+ var con;
+ if (eccent > 1.0e-7) {
+ con = eccent * sinphi;
+ return ((1 - eccent * eccent) * (sinphi / (1 - con * con) - (0.5 / eccent) * Math.log((1 - con) / (1 + con))));
+ }
+ else {
+ return (2 * sinphi);
+ }
+};
\ No newline at end of file
diff --git a/lib/common/sign.js b/lib/common/sign.js
new file mode 100644
index 0000000..e31dc08
--- /dev/null
+++ b/lib/common/sign.js
@@ -0,0 +1,3 @@
+module.exports = function(x) {
+ return x<0 ? -1 : 1;
+};
\ No newline at end of file
diff --git a/lib/common/sinh.js b/lib/common/sinh.js
new file mode 100644
index 0000000..fa57607
--- /dev/null
+++ b/lib/common/sinh.js
@@ -0,0 +1,5 @@
+module.exports = function(x) {
+ var r = Math.exp(x);
+ r = (r - 1 / r) / 2;
+ return r;
+};
\ No newline at end of file
diff --git a/lib/common/srat.js b/lib/common/srat.js
new file mode 100644
index 0000000..c7db8e0
--- /dev/null
+++ b/lib/common/srat.js
@@ -0,0 +1,3 @@
+module.exports = function(esinp, exp) {
+ return (Math.pow((1 - esinp) / (1 + esinp), exp));
+};
\ No newline at end of file
diff --git a/lib/common/tanh.js b/lib/common/tanh.js
new file mode 100644
index 0000000..bc05c42
--- /dev/null
+++ b/lib/common/tanh.js
@@ -0,0 +1,5 @@
+module.exports = function(x) {
+ var r = Math.exp(x);
+ r = (r - 1 / r) / (r + 1 / r);
+ return r;
+};
\ No newline at end of file
diff --git a/lib/common/toPoint.js b/lib/common/toPoint.js
new file mode 100644
index 0000000..d76dec8
--- /dev/null
+++ b/lib/common/toPoint.js
@@ -0,0 +1,13 @@
+module.exports = function (array){
+ var out = {
+ x: array[0],
+ y: array[1]
+ };
+ if (array.length>2) {
+ out.z = array[2];
+ }
+ if (array.length>3) {
+ out.m = array[3];
+ }
+ return out;
+};
\ No newline at end of file
diff --git a/lib/common/tsfnz.js b/lib/common/tsfnz.js
new file mode 100644
index 0000000..ad7c66a
--- /dev/null
+++ b/lib/common/tsfnz.js
@@ -0,0 +1,8 @@
+var HALF_PI = Math.PI/2;
+
+module.exports = function(eccent, phi, sinphi) {
+ var con = eccent * sinphi;
+ var com = 0.5 * eccent;
+ con = Math.pow(((1 - con) / (1 + con)), com);
+ return (Math.tan(0.5 * (HALF_PI - phi)) / con);
+};
\ No newline at end of file
diff --git a/lib/constants/Datum.js b/lib/constants/Datum.js
new file mode 100644
index 0000000..a112b32
--- /dev/null
+++ b/lib/constants/Datum.js
@@ -0,0 +1,80 @@
+exports.wgs84 = {
+ towgs84: "0,0,0",
+ ellipse: "WGS84",
+ datumName: "WGS84"
+};
+exports.ch1903 = {
+ towgs84: "674.374,15.056,405.346",
+ ellipse: "bessel",
+ datumName: "swiss"
+};
+exports.ggrs87 = {
+ towgs84: "-199.87,74.79,246.62",
+ ellipse: "GRS80",
+ datumName: "Greek_Geodetic_Reference_System_1987"
+};
+exports.nad83 = {
+ towgs84: "0,0,0",
+ ellipse: "GRS80",
+ datumName: "North_American_Datum_1983"
+};
+exports.nad27 = {
+ nadgrids: "@conus, at alaska, at ntv2_0.gsb, at ntv1_can.dat",
+ ellipse: "clrk66",
+ datumName: "North_American_Datum_1927"
+};
+exports.potsdam = {
+ towgs84: "606.0,23.0,413.0",
+ ellipse: "bessel",
+ datumName: "Potsdam Rauenberg 1950 DHDN"
+};
+exports.carthage = {
+ towgs84: "-263.0,6.0,431.0",
+ ellipse: "clark80",
+ datumName: "Carthage 1934 Tunisia"
+};
+exports.hermannskogel = {
+ towgs84: "653.0,-212.0,449.0",
+ ellipse: "bessel",
+ datumName: "Hermannskogel"
+};
+exports.ire65 = {
+ towgs84: "482.530,-130.596,564.557,-1.042,-0.214,-0.631,8.15",
+ ellipse: "mod_airy",
+ datumName: "Ireland 1965"
+};
+exports.rassadiran = {
+ towgs84: "-133.63,-157.5,-158.62",
+ ellipse: "intl",
+ datumName: "Rassadiran"
+};
+exports.nzgd49 = {
+ towgs84: "59.47,-5.04,187.44,0.47,-0.1,1.024,-4.5993",
+ ellipse: "intl",
+ datumName: "New Zealand Geodetic Datum 1949"
+};
+exports.osgb36 = {
+ towgs84: "446.448,-125.157,542.060,0.1502,0.2470,0.8421,-20.4894",
+ ellipse: "airy",
+ datumName: "Airy 1830"
+};
+exports.s_jtsk = {
+ towgs84: "589,76,480",
+ ellipse: 'bessel',
+ datumName: 'S-JTSK (Ferro)'
+};
+exports.beduaram = {
+ towgs84: '-106,-87,188',
+ ellipse: 'clrk80',
+ datumName: 'Beduaram'
+};
+exports.gunung_segara = {
+ towgs84: '-403,684,41',
+ ellipse: 'bessel',
+ datumName: 'Gunung Segara Jakarta'
+};
+exports.rnb72 = {
+ towgs84: "106.869,-52.2978,103.724,-0.33657,0.456955,-1.84218,1",
+ ellipse: "intl",
+ datumName: "Reseau National Belge 1972"
+};
\ No newline at end of file
diff --git a/lib/constants/Ellipsoid.js b/lib/constants/Ellipsoid.js
new file mode 100644
index 0000000..51afef8
--- /dev/null
+++ b/lib/constants/Ellipsoid.js
@@ -0,0 +1,215 @@
+exports.MERIT = {
+ a: 6378137.0,
+ rf: 298.257,
+ ellipseName: "MERIT 1983"
+};
+exports.SGS85 = {
+ a: 6378136.0,
+ rf: 298.257,
+ ellipseName: "Soviet Geodetic System 85"
+};
+exports.GRS80 = {
+ a: 6378137.0,
+ rf: 298.257222101,
+ ellipseName: "GRS 1980(IUGG, 1980)"
+};
+exports.IAU76 = {
+ a: 6378140.0,
+ rf: 298.257,
+ ellipseName: "IAU 1976"
+};
+exports.airy = {
+ a: 6377563.396,
+ b: 6356256.910,
+ ellipseName: "Airy 1830"
+};
+exports.APL4 = {
+ a: 6378137,
+ rf: 298.25,
+ ellipseName: "Appl. Physics. 1965"
+};
+exports.NWL9D = {
+ a: 6378145.0,
+ rf: 298.25,
+ ellipseName: "Naval Weapons Lab., 1965"
+};
+exports.mod_airy = {
+ a: 6377340.189,
+ b: 6356034.446,
+ ellipseName: "Modified Airy"
+};
+exports.andrae = {
+ a: 6377104.43,
+ rf: 300.0,
+ ellipseName: "Andrae 1876 (Den., Iclnd.)"
+};
+exports.aust_SA = {
+ a: 6378160.0,
+ rf: 298.25,
+ ellipseName: "Australian Natl & S. Amer. 1969"
+};
+exports.GRS67 = {
+ a: 6378160.0,
+ rf: 298.2471674270,
+ ellipseName: "GRS 67(IUGG 1967)"
+};
+exports.bessel = {
+ a: 6377397.155,
+ rf: 299.1528128,
+ ellipseName: "Bessel 1841"
+};
+exports.bess_nam = {
+ a: 6377483.865,
+ rf: 299.1528128,
+ ellipseName: "Bessel 1841 (Namibia)"
+};
+exports.clrk66 = {
+ a: 6378206.4,
+ b: 6356583.8,
+ ellipseName: "Clarke 1866"
+};
+exports.clrk80 = {
+ a: 6378249.145,
+ rf: 293.4663,
+ ellipseName: "Clarke 1880 mod."
+};
+exports.clrk58 = {
+ a: 6378293.645208759,
+ rf: 294.2606763692654,
+ ellipseName: "Clarke 1858"
+};
+exports.CPM = {
+ a: 6375738.7,
+ rf: 334.29,
+ ellipseName: "Comm. des Poids et Mesures 1799"
+};
+exports.delmbr = {
+ a: 6376428.0,
+ rf: 311.5,
+ ellipseName: "Delambre 1810 (Belgium)"
+};
+exports.engelis = {
+ a: 6378136.05,
+ rf: 298.2566,
+ ellipseName: "Engelis 1985"
+};
+exports.evrst30 = {
+ a: 6377276.345,
+ rf: 300.8017,
+ ellipseName: "Everest 1830"
+};
+exports.evrst48 = {
+ a: 6377304.063,
+ rf: 300.8017,
+ ellipseName: "Everest 1948"
+};
+exports.evrst56 = {
+ a: 6377301.243,
+ rf: 300.8017,
+ ellipseName: "Everest 1956"
+};
+exports.evrst69 = {
+ a: 6377295.664,
+ rf: 300.8017,
+ ellipseName: "Everest 1969"
+};
+exports.evrstSS = {
+ a: 6377298.556,
+ rf: 300.8017,
+ ellipseName: "Everest (Sabah & Sarawak)"
+};
+exports.fschr60 = {
+ a: 6378166.0,
+ rf: 298.3,
+ ellipseName: "Fischer (Mercury Datum) 1960"
+};
+exports.fschr60m = {
+ a: 6378155.0,
+ rf: 298.3,
+ ellipseName: "Fischer 1960"
+};
+exports.fschr68 = {
+ a: 6378150.0,
+ rf: 298.3,
+ ellipseName: "Fischer 1968"
+};
+exports.helmert = {
+ a: 6378200.0,
+ rf: 298.3,
+ ellipseName: "Helmert 1906"
+};
+exports.hough = {
+ a: 6378270.0,
+ rf: 297.0,
+ ellipseName: "Hough"
+};
+exports.intl = {
+ a: 6378388.0,
+ rf: 297.0,
+ ellipseName: "International 1909 (Hayford)"
+};
+exports.kaula = {
+ a: 6378163.0,
+ rf: 298.24,
+ ellipseName: "Kaula 1961"
+};
+exports.lerch = {
+ a: 6378139.0,
+ rf: 298.257,
+ ellipseName: "Lerch 1979"
+};
+exports.mprts = {
+ a: 6397300.0,
+ rf: 191.0,
+ ellipseName: "Maupertius 1738"
+};
+exports.new_intl = {
+ a: 6378157.5,
+ b: 6356772.2,
+ ellipseName: "New International 1967"
+};
+exports.plessis = {
+ a: 6376523.0,
+ rf: 6355863.0,
+ ellipseName: "Plessis 1817 (France)"
+};
+exports.krass = {
+ a: 6378245.0,
+ rf: 298.3,
+ ellipseName: "Krassovsky, 1942"
+};
+exports.SEasia = {
+ a: 6378155.0,
+ b: 6356773.3205,
+ ellipseName: "Southeast Asia"
+};
+exports.walbeck = {
+ a: 6376896.0,
+ b: 6355834.8467,
+ ellipseName: "Walbeck"
+};
+exports.WGS60 = {
+ a: 6378165.0,
+ rf: 298.3,
+ ellipseName: "WGS 60"
+};
+exports.WGS66 = {
+ a: 6378145.0,
+ rf: 298.25,
+ ellipseName: "WGS 66"
+};
+exports.WGS7 = {
+ a: 6378135.0,
+ rf: 298.26,
+ ellipseName: "WGS 72"
+};
+exports.WGS84 = {
+ a: 6378137.0,
+ rf: 298.257223563,
+ ellipseName: "WGS 84"
+};
+exports.sphere = {
+ a: 6370997.0,
+ b: 6370997.0,
+ ellipseName: "Normal Sphere (r=6370997)"
+};
\ No newline at end of file
diff --git a/lib/constants/PrimeMeridian.js b/lib/constants/PrimeMeridian.js
new file mode 100644
index 0000000..ae6556f
--- /dev/null
+++ b/lib/constants/PrimeMeridian.js
@@ -0,0 +1,13 @@
+exports.greenwich = 0.0; //"0dE",
+exports.lisbon = -9.131906111111; //"9d07'54.862\"W",
+exports.paris = 2.337229166667; //"2d20'14.025\"E",
+exports.bogota = -74.080916666667; //"74d04'51.3\"W",
+exports.madrid = -3.687938888889; //"3d41'16.58\"W",
+exports.rome = 12.452333333333; //"12d27'8.4\"E",
+exports.bern = 7.439583333333; //"7d26'22.5\"E",
+exports.jakarta = 106.807719444444; //"106d48'27.79\"E",
+exports.ferro = -17.666666666667; //"17d40'W",
+exports.brussels = 4.367975; //"4d22'4.71\"E",
+exports.stockholm = 18.058277777778; //"18d3'29.8\"E",
+exports.athens = 23.7163375; //"23d42'58.815\"E",
+exports.oslo = 10.722916666667; //"10d43'22.5\"E"
\ No newline at end of file
diff --git a/lib/constants/grids.js b/lib/constants/grids.js
new file mode 100644
index 0000000..2a1c46c
--- /dev/null
+++ b/lib/constants/grids.js
@@ -0,0 +1,23 @@
+// Based on . CTABLE structure :
+ // FIXME: better to have array instead of object holding longitudes, latitudes members
+ // In the former case, one has to document index 0 is longitude and
+ // 1 is latitude ...
+ // In the later case, grid object gets bigger !!!!
+ // Solution 1 is chosen based on pj_gridinfo.c
+exports.null = { // name of grid's file
+ "ll": [-3.14159265, - 1.57079633], // lower-left coordinates in radians (longitude, latitude):
+ "del": [3.14159265, 1.57079633], // cell's size in radians (longitude, latitude):
+ "lim": [3, 3], // number of nodes in longitude, latitude (including edges):
+ "count": 9, // total number of nodes
+ "cvs": [ // shifts : in ntv2 reverse order : lon, lat in radians ...
+ [0.0, 0.0],
+ [0.0, 0.0],
+ [0.0, 0.0], // for (lon= 0; lon<lim[0]; lon++) {
+ [0.0, 0.0],
+ [0.0, 0.0],
+ [0.0, 0.0], // for (lat= 0; lat<lim[1]; lat++) { p= cvs[lat*lim[0]+lon]; }
+ [0.0, 0.0],
+ [0.0, 0.0],
+ [0.0, 0.0] // }
+ ]
+};
\ No newline at end of file
diff --git a/lib/core.js b/lib/core.js
new file mode 100644
index 0000000..720d63a
--- /dev/null
+++ b/lib/core.js
@@ -0,0 +1,64 @@
+var proj = require('./Proj');
+var transform = require('./transform');
+var wgs84 = proj('WGS84');
+
+function transformer(from, to, coords) {
+ var transformedArray;
+ if (Array.isArray(coords)) {
+ transformedArray = transform(from, to, coords);
+ if (coords.length === 3) {
+ return [transformedArray.x, transformedArray.y, transformedArray.z];
+ }
+ else {
+ return [transformedArray.x, transformedArray.y];
+ }
+ }
+ else {
+ return transform(from, to, coords);
+ }
+}
+
+function checkProj(item) {
+ if (item instanceof proj) {
+ return item;
+ }
+ if (item.oProj) {
+ return item.oProj;
+ }
+ return proj(item);
+}
+function proj4(fromProj, toProj, coord) {
+ fromProj = checkProj(fromProj);
+ var single = false;
+ var obj;
+ if (typeof toProj === 'undefined') {
+ toProj = fromProj;
+ fromProj = wgs84;
+ single = true;
+ }
+ else if (typeof toProj.x !== 'undefined' || Array.isArray(toProj)) {
+ coord = toProj;
+ toProj = fromProj;
+ fromProj = wgs84;
+ single = true;
+ }
+ toProj = checkProj(toProj);
+ if (coord) {
+ return transformer(fromProj, toProj, coord);
+ }
+ else {
+ obj = {
+ forward: function(coords) {
+ return transformer(fromProj, toProj, coords);
+ },
+ inverse: function(coords) {
+ return transformer(toProj, fromProj, coords);
+ }
+ };
+ if (single) {
+ obj.oProj = toProj;
+ }
+ return obj;
+ }
+}
+module.exports = proj4;
\ No newline at end of file
diff --git a/lib/datum.js b/lib/datum.js
new file mode 100644
index 0000000..916e7c5
--- /dev/null
+++ b/lib/datum.js
@@ -0,0 +1,404 @@
+var HALF_PI = Math.PI/2;
+var PJD_3PARAM = 1;
+var PJD_7PARAM = 2;
+var PJD_GRIDSHIFT = 3;
+var PJD_WGS84 = 4; // WGS84 or equivalent
+var PJD_NODATUM = 5; // WGS84 or equivalent
+var SEC_TO_RAD = 4.84813681109535993589914102357e-6;
+var AD_C = 1.0026000;
+var COS_67P5 = 0.38268343236508977;
+var datum = function(proj) {
+ if (!(this instanceof datum)) {
+ return new datum(proj);
+ }
+ this.datum_type = PJD_WGS84; //default setting
+ if (!proj) {
+ return;
+ }
+ if (proj.datumCode && proj.datumCode === 'none') {
+ this.datum_type = PJD_NODATUM;
+ }
+ if (proj.datum_params) {
+ for (var i = 0; i < proj.datum_params.length; i++) {
+ proj.datum_params[i] = parseFloat(proj.datum_params[i]);
+ }
+ if (proj.datum_params[0] !== 0 || proj.datum_params[1] !== 0 || proj.datum_params[2] !== 0) {
+ this.datum_type = PJD_3PARAM;
+ }
+ if (proj.datum_params.length > 3) {
+ if (proj.datum_params[3] !== 0 || proj.datum_params[4] !== 0 || proj.datum_params[5] !== 0 || proj.datum_params[6] !== 0) {
+ this.datum_type = PJD_7PARAM;
+ proj.datum_params[3] *= SEC_TO_RAD;
+ proj.datum_params[4] *= SEC_TO_RAD;
+ proj.datum_params[5] *= SEC_TO_RAD;
+ proj.datum_params[6] = (proj.datum_params[6] / 1000000.0) + 1.0;
+ }
+ }
+ }
+ // DGR 2011-03-21 : nadgrids support
+ this.datum_type = proj.grids ? PJD_GRIDSHIFT : this.datum_type;
+
+ this.a = proj.a; //datum object also uses these values
+ this.b = proj.b;
+ this.es = proj.es;
+ this.ep2 = proj.ep2;
+ this.datum_params = proj.datum_params;
+ if (this.datum_type === PJD_GRIDSHIFT) {
+ this.grids = proj.grids;
+ }
+};
+datum.prototype = {
+
+
+ /****************************************************************/
+ // cs_compare_datums()
+ // Returns TRUE if the two datums match, otherwise FALSE.
+ compare_datums: function(dest) {
+ if (this.datum_type !== dest.datum_type) {
+ return false; // false, datums are not equal
+ }
+ else if (this.a !== dest.a || Math.abs(this.es - dest.es) > 0.000000000050) {
+ // the tolerence for es is to ensure that GRS80 and WGS84
+ // are considered identical
+ return false;
+ }
+ else if (this.datum_type === PJD_3PARAM) {
+ return (this.datum_params[0] === dest.datum_params[0] && this.datum_params[1] === dest.datum_params[1] && this.datum_params[2] === dest.datum_params[2]);
+ }
+ else if (this.datum_type === PJD_7PARAM) {
+ return (this.datum_params[0] === dest.datum_params[0] && this.datum_params[1] === dest.datum_params[1] && this.datum_params[2] === dest.datum_params[2] && this.datum_params[3] === dest.datum_params[3] && this.datum_params[4] === dest.datum_params[4] && this.datum_params[5] === dest.datum_params[5] && this.datum_params[6] === dest.datum_params[6]);
+ }
+ else if (this.datum_type === PJD_GRIDSHIFT || dest.datum_type === PJD_GRIDSHIFT) {
+ //alert("ERROR: Grid shift transformations are not implemented.");
+ //return false
+ //DGR 2012-07-29 lazy ...
+ return this.nadgrids === dest.nadgrids;
+ }
+ else {
+ return true; // datums are equal
+ }
+ }, // cs_compare_datums()
+
+ /*
+ * The function Convert_Geodetic_To_Geocentric converts geodetic coordinates
+ * (latitude, longitude, and height) to geocentric coordinates (X, Y, Z),
+ * according to the current ellipsoid parameters.
+ *
+ * Latitude : Geodetic latitude in radians (input)
+ * Longitude : Geodetic longitude in radians (input)
+ * Height : Geodetic height, in meters (input)
+ * X : Calculated Geocentric X coordinate, in meters (output)
+ * Y : Calculated Geocentric Y coordinate, in meters (output)
+ * Z : Calculated Geocentric Z coordinate, in meters (output)
+ *
+ */
+ geodetic_to_geocentric: function(p) {
+ var Longitude = p.x;
+ var Latitude = p.y;
+ var Height = p.z ? p.z : 0; //Z value not always supplied
+ var X; // output
+ var Y;
+ var Z;
+
+ var Error_Code = 0; // GEOCENT_NO_ERROR;
+ var Rn; /* Earth radius at location */
+ var Sin_Lat; /* Math.sin(Latitude) */
+ var Sin2_Lat; /* Square of Math.sin(Latitude) */
+ var Cos_Lat; /* Math.cos(Latitude) */
+
+ /*
+ ** Don't blow up if Latitude is just a little out of the value
+ ** range as it may just be a rounding issue. Also removed longitude
+ ** test, it should be wrapped by Math.cos() and Math.sin(). NFW for PROJ.4, Sep/2001.
+ */
+ if (Latitude < -HALF_PI && Latitude > -1.001 * HALF_PI) {
+ Latitude = -HALF_PI;
+ }
+ else if (Latitude > HALF_PI && Latitude < 1.001 * HALF_PI) {
+ Latitude = HALF_PI;
+ }
+ else if ((Latitude < -HALF_PI) || (Latitude > HALF_PI)) {
+ /* Latitude out of range */
+ //..reportError('geocent:lat out of range:' + Latitude);
+ return null;
+ }
+
+ if (Longitude > Math.PI) {
+ Longitude -= (2 * Math.PI);
+ }
+ Sin_Lat = Math.sin(Latitude);
+ Cos_Lat = Math.cos(Latitude);
+ Sin2_Lat = Sin_Lat * Sin_Lat;
+ Rn = this.a / (Math.sqrt(1.0e0 - this.es * Sin2_Lat));
+ X = (Rn + Height) * Cos_Lat * Math.cos(Longitude);
+ Y = (Rn + Height) * Cos_Lat * Math.sin(Longitude);
+ Z = ((Rn * (1 - this.es)) + Height) * Sin_Lat;
+
+ p.x = X;
+ p.y = Y;
+ p.z = Z;
+ return Error_Code;
+ }, // cs_geodetic_to_geocentric()
+
+
+ geocentric_to_geodetic: function(p) {
+ /* local defintions and variables */
+ /* end-criterium of loop, accuracy of sin(Latitude) */
+ var genau = 1e-12;
+ var genau2 = (genau * genau);
+ var maxiter = 30;
+
+ var P; /* distance between semi-minor axis and location */
+ var RR; /* distance between center and location */
+ var CT; /* sin of geocentric latitude */
+ var ST; /* cos of geocentric latitude */
+ var RX;
+ var RK;
+ var RN; /* Earth radius at location */
+ var CPHI0; /* cos of start or old geodetic latitude in iterations */
+ var SPHI0; /* sin of start or old geodetic latitude in iterations */
+ var CPHI; /* cos of searched geodetic latitude */
+ var SPHI; /* sin of searched geodetic latitude */
+ var SDPHI; /* end-criterium: addition-theorem of sin(Latitude(iter)-Latitude(iter-1)) */
+ var At_Pole; /* indicates location is in polar region */
+ var iter; /* # of continous iteration, max. 30 is always enough (s.a.) */
+
+ var X = p.x;
+ var Y = p.y;
+ var Z = p.z ? p.z : 0.0; //Z value not always supplied
+ var Longitude;
+ var Latitude;
+ var Height;
+
+ At_Pole = false;
+ P = Math.sqrt(X * X + Y * Y);
+ RR = Math.sqrt(X * X + Y * Y + Z * Z);
+
+ /* special cases for latitude and longitude */
+ if (P / this.a < genau) {
+
+ /* special case, if P=0. (X=0., Y=0.) */
+ At_Pole = true;
+ Longitude = 0.0;
+
+ /* if (X,Y,Z)=(0.,0.,0.) then Height becomes semi-minor axis
+ * of ellipsoid (=center of mass), Latitude becomes PI/2 */
+ if (RR / this.a < genau) {
+ Latitude = HALF_PI;
+ Height = -this.b;
+ return;
+ }
+ }
+ else {
+ /* ellipsoidal (geodetic) longitude
+ * interval: -PI < Longitude <= +PI */
+ Longitude = Math.atan2(Y, X);
+ }
+
+ /* --------------------------------------------------------------
+ * Following iterative algorithm was developped by
+ * "Institut for Erdmessung", University of Hannover, July 1988.
+ * Internet: www.ife.uni-hannover.de
+ * Iterative computation of CPHI,SPHI and Height.
+ * Iteration of CPHI and SPHI to 10**-12 radian resp.
+ * 2*10**-7 arcsec.
+ * --------------------------------------------------------------
+ */
+ CT = Z / RR;
+ ST = P / RR;
+ RX = 1.0 / Math.sqrt(1.0 - this.es * (2.0 - this.es) * ST * ST);
+ CPHI0 = ST * (1.0 - this.es) * RX;
+ SPHI0 = CT * RX;
+ iter = 0;
+
+ /* loop to find sin(Latitude) resp. Latitude
+ * until |sin(Latitude(iter)-Latitude(iter-1))| < genau */
+ do {
+ iter++;
+ RN = this.a / Math.sqrt(1.0 - this.es * SPHI0 * SPHI0);
+
+ /* ellipsoidal (geodetic) height */
+ Height = P * CPHI0 + Z * SPHI0 - RN * (1.0 - this.es * SPHI0 * SPHI0);
+
+ RK = this.es * RN / (RN + Height);
+ RX = 1.0 / Math.sqrt(1.0 - RK * (2.0 - RK) * ST * ST);
+ CPHI = ST * (1.0 - RK) * RX;
+ SPHI = CT * RX;
+ SDPHI = SPHI * CPHI0 - CPHI * SPHI0;
+ CPHI0 = CPHI;
+ SPHI0 = SPHI;
+ }
+ while (SDPHI * SDPHI > genau2 && iter < maxiter);
+
+ /* ellipsoidal (geodetic) latitude */
+ Latitude = Math.atan(SPHI / Math.abs(CPHI));
+
+ p.x = Longitude;
+ p.y = Latitude;
+ p.z = Height;
+ return p;
+ }, // cs_geocentric_to_geodetic()
+
+ /** Convert_Geocentric_To_Geodetic
+ * The method used here is derived from 'An Improved Algorithm for
+ * Geocentric to Geodetic Coordinate Conversion', by Ralph Toms, Feb 1996
+ */
+ geocentric_to_geodetic_noniter: function(p) {
+ var X = p.x;
+ var Y = p.y;
+ var Z = p.z ? p.z : 0; //Z value not always supplied
+ var Longitude;
+ var Latitude;
+ var Height;
+
+ var W; /* distance from Z axis */
+ var W2; /* square of distance from Z axis */
+ var T0; /* initial estimate of vertical component */
+ var T1; /* corrected estimate of vertical component */
+ var S0; /* initial estimate of horizontal component */
+ var S1; /* corrected estimate of horizontal component */
+ var Sin_B0; /* Math.sin(B0), B0 is estimate of Bowring aux variable */
+ var Sin3_B0; /* cube of Math.sin(B0) */
+ var Cos_B0; /* Math.cos(B0) */
+ var Sin_p1; /* Math.sin(phi1), phi1 is estimated latitude */
+ var Cos_p1; /* Math.cos(phi1) */
+ var Rn; /* Earth radius at location */
+ var Sum; /* numerator of Math.cos(phi1) */
+ var At_Pole; /* indicates location is in polar region */
+
+ X = parseFloat(X); // cast from string to float
+ Y = parseFloat(Y);
+ Z = parseFloat(Z);
+
+ At_Pole = false;
+ if (X !== 0.0) {
+ Longitude = Math.atan2(Y, X);
+ }
+ else {
+ if (Y > 0) {
+ Longitude = HALF_PI;
+ }
+ else if (Y < 0) {
+ Longitude = -HALF_PI;
+ }
+ else {
+ At_Pole = true;
+ Longitude = 0.0;
+ if (Z > 0.0) { /* north pole */
+ Latitude = HALF_PI;
+ }
+ else if (Z < 0.0) { /* south pole */
+ Latitude = -HALF_PI;
+ }
+ else { /* center of earth */
+ Latitude = HALF_PI;
+ Height = -this.b;
+ return;
+ }
+ }
+ }
+ W2 = X * X + Y * Y;
+ W = Math.sqrt(W2);
+ T0 = Z * AD_C;
+ S0 = Math.sqrt(T0 * T0 + W2);
+ Sin_B0 = T0 / S0;
+ Cos_B0 = W / S0;
+ Sin3_B0 = Sin_B0 * Sin_B0 * Sin_B0;
+ T1 = Z + this.b * this.ep2 * Sin3_B0;
+ Sum = W - this.a * this.es * Cos_B0 * Cos_B0 * Cos_B0;
+ S1 = Math.sqrt(T1 * T1 + Sum * Sum);
+ Sin_p1 = T1 / S1;
+ Cos_p1 = Sum / S1;
+ Rn = this.a / Math.sqrt(1.0 - this.es * Sin_p1 * Sin_p1);
+ if (Cos_p1 >= COS_67P5) {
+ Height = W / Cos_p1 - Rn;
+ }
+ else if (Cos_p1 <= -COS_67P5) {
+ Height = W / -Cos_p1 - Rn;
+ }
+ else {
+ Height = Z / Sin_p1 + Rn * (this.es - 1.0);
+ }
+ if (At_Pole === false) {
+ Latitude = Math.atan(Sin_p1 / Cos_p1);
+ }
+
+ p.x = Longitude;
+ p.y = Latitude;
+ p.z = Height;
+ return p;
+ }, // geocentric_to_geodetic_noniter()
+
+ /****************************************************************/
+ // pj_geocentic_to_wgs84( p )
+ // p = point to transform in geocentric coordinates (x,y,z)
+ geocentric_to_wgs84: function(p) {
+
+ if (this.datum_type === PJD_3PARAM) {
+ // if( x[io] === HUGE_VAL )
+ // continue;
+ p.x += this.datum_params[0];
+ p.y += this.datum_params[1];
+ p.z += this.datum_params[2];
+
+ }
+ else if (this.datum_type === PJD_7PARAM) {
+ var Dx_BF = this.datum_params[0];
+ var Dy_BF = this.datum_params[1];
+ var Dz_BF = this.datum_params[2];
+ var Rx_BF = this.datum_params[3];
+ var Ry_BF = this.datum_params[4];
+ var Rz_BF = this.datum_params[5];
+ var M_BF = this.datum_params[6];
+ // if( x[io] === HUGE_VAL )
+ // continue;
+ var x_out = M_BF * (p.x - Rz_BF * p.y + Ry_BF * p.z) + Dx_BF;
+ var y_out = M_BF * (Rz_BF * p.x + p.y - Rx_BF * p.z) + Dy_BF;
+ var z_out = M_BF * (-Ry_BF * p.x + Rx_BF * p.y + p.z) + Dz_BF;
+ p.x = x_out;
+ p.y = y_out;
+ p.z = z_out;
+ }
+ }, // cs_geocentric_to_wgs84
+
+ /****************************************************************/
+ // pj_geocentic_from_wgs84()
+ // coordinate system definition,
+ // point to transform in geocentric coordinates (x,y,z)
+ geocentric_from_wgs84: function(p) {
+
+ if (this.datum_type === PJD_3PARAM) {
+ //if( x[io] === HUGE_VAL )
+ // continue;
+ p.x -= this.datum_params[0];
+ p.y -= this.datum_params[1];
+ p.z -= this.datum_params[2];
+
+ }
+ else if (this.datum_type === PJD_7PARAM) {
+ var Dx_BF = this.datum_params[0];
+ var Dy_BF = this.datum_params[1];
+ var Dz_BF = this.datum_params[2];
+ var Rx_BF = this.datum_params[3];
+ var Ry_BF = this.datum_params[4];
+ var Rz_BF = this.datum_params[5];
+ var M_BF = this.datum_params[6];
+ var x_tmp = (p.x - Dx_BF) / M_BF;
+ var y_tmp = (p.y - Dy_BF) / M_BF;
+ var z_tmp = (p.z - Dz_BF) / M_BF;
+ //if( x[io] === HUGE_VAL )
+ // continue;
+
+ p.x = x_tmp + Rz_BF * y_tmp - Ry_BF * z_tmp;
+ p.y = -Rz_BF * x_tmp + y_tmp + Rx_BF * z_tmp;
+ p.z = Ry_BF * x_tmp - Rx_BF * y_tmp + z_tmp;
+ } //cs_geocentric_from_wgs84()
+ }
+};
+
+/** point object, nothing fancy, just allows values to be
+ passed back and forth by reference rather than by value.
+ Other point classes may be used as long as they have
+ x and y properties, which will get modified in the transform method.
+*/
+module.exports = datum;
diff --git a/lib/datum_transform.js b/lib/datum_transform.js
new file mode 100644
index 0000000..65173a8
--- /dev/null
+++ b/lib/datum_transform.js
@@ -0,0 +1,99 @@
+var PJD_3PARAM = 1;
+var PJD_7PARAM = 2;
+var PJD_GRIDSHIFT = 3;
+var PJD_NODATUM = 5; // WGS84 or equivalent
+var SRS_WGS84_SEMIMAJOR = 6378137; // only used in grid shift transforms
+var SRS_WGS84_ESQUARED = 0.006694379990141316; //DGR: 2012-07-29
+module.exports = function(source, dest, point) {
+ var wp, i, l;
+
+ function checkParams(fallback) {
+ return (fallback === PJD_3PARAM || fallback === PJD_7PARAM);
+ }
+ // Short cut if the datums are identical.
+ if (source.compare_datums(dest)) {
+ return point; // in this case, zero is sucess,
+ // whereas cs_compare_datums returns 1 to indicate TRUE
+ // confusing, should fix this
+ }
+
+ // Explicitly skip datum transform by setting 'datum=none' as parameter for either source or dest
+ if (source.datum_type === PJD_NODATUM || dest.datum_type === PJD_NODATUM) {
+ return point;
+ }
+
+ //DGR: 2012-07-29 : add nadgrids support (begin)
+ var src_a = source.a;
+ var src_es = source.es;
+
+ var dst_a = dest.a;
+ var dst_es = dest.es;
+
+ var fallback = source.datum_type;
+ // If this datum requires grid shifts, then apply it to geodetic coordinates.
+ if (fallback === PJD_GRIDSHIFT) {
+ if (this.apply_gridshift(source, 0, point) === 0) {
+ source.a = SRS_WGS84_SEMIMAJOR;
+ source.es = SRS_WGS84_ESQUARED;
+ }
+ else {
+ // try 3 or 7 params transformation or nothing ?
+ if (!source.datum_params) {
+ source.a = src_a;
+ source.es = source.es;
+ return point;
+ }
+ wp = 1;
+ for (i = 0, l = source.datum_params.length; i < l; i++) {
+ wp *= source.datum_params[i];
+ }
+ if (wp === 0) {
+ source.a = src_a;
+ source.es = source.es;
+ return point;
+ }
+ if (source.datum_params.length > 3) {
+ fallback = PJD_7PARAM;
+ }
+ else {
+ fallback = PJD_3PARAM;
+ }
+ }
+ }
+ if (dest.datum_type === PJD_GRIDSHIFT) {
+ dest.a = SRS_WGS84_SEMIMAJOR;
+ dest.es = SRS_WGS84_ESQUARED;
+ }
+ // Do we need to go through geocentric coordinates?
+ if (source.es !== dest.es || source.a !== dest.a || checkParams(fallback) || checkParams(dest.datum_type)) {
+ //DGR: 2012-07-29 : add nadgrids support (end)
+ // Convert to geocentric coordinates.
+ source.geodetic_to_geocentric(point);
+ // CHECK_RETURN;
+ // Convert between datums
+ if (checkParams(source.datum_type)) {
+ source.geocentric_to_wgs84(point);
+ // CHECK_RETURN;
+ }
+ if (checkParams(dest.datum_type)) {
+ dest.geocentric_from_wgs84(point);
+ // CHECK_RETURN;
+ }
+ // Convert back to geodetic coordinates
+ dest.geocentric_to_geodetic(point);
+ // CHECK_RETURN;
+ }
+ // Apply grid shift to destination if required
+ if (dest.datum_type === PJD_GRIDSHIFT) {
+ this.apply_gridshift(dest, 1, point);
+ // CHECK_RETURN;
+ }
+
+ source.a = src_a;
+ source.es = src_es;
+ dest.a = dst_a;
+ dest.es = dst_es;
+
+ return point;
+};
+
diff --git a/lib/defs.js b/lib/defs.js
new file mode 100644
index 0000000..66dbeb6
--- /dev/null
+++ b/lib/defs.js
@@ -0,0 +1,55 @@
+var globals = require('./global');
+var parseProj = require('./projString');
+var wkt = require('./wkt');
+
+function defs(name) {
+ /*global console*/
+ var that = this;
+ if (arguments.length === 2) {
+ var def = arguments[1];
+ if (typeof def === 'string') {
+ if (def.charAt(0) === '+') {
+ defs[name] = parseProj(arguments[1]);
+ }
+ else {
+ defs[name] = wkt(arguments[1]);
+ }
+ } else {
+ defs[name] = def;
+ }
+ }
+ else if (arguments.length === 1) {
+ if (Array.isArray(name)) {
+ return name.map(function(v) {
+ if (Array.isArray(v)) {
+ defs.apply(that, v);
+ }
+ else {
+ defs(v);
+ }
+ });
+ }
+ else if (typeof name === 'string') {
+ if (name in defs) {
+ return defs[name];
+ }
+ }
+ else if ('EPSG' in name) {
+ defs['EPSG:' + name.EPSG] = name;
+ }
+ else if ('ESRI' in name) {
+ defs['ESRI:' + name.ESRI] = name;
+ }
+ else if ('IAU2000' in name) {
+ defs['IAU2000:' + name.IAU2000] = name;
+ }
+ else {
+ console.log(name);
+ }
+ return;
+ }
+
+
+}
+globals(defs);
+module.exports = defs;
diff --git a/lib/deriveConstants.js b/lib/deriveConstants.js
new file mode 100644
index 0000000..b8a80a2
--- /dev/null
+++ b/lib/deriveConstants.js
@@ -0,0 +1,56 @@
+var Datum = require('./constants/Datum');
+var Ellipsoid = require('./constants/Ellipsoid');
+var extend = require('./extend');
+var datum = require('./datum');
+var EPSLN = 1.0e-10;
+// ellipoid pj_set_ell.c
+var SIXTH = 0.1666666666666666667;
+/* 1/6 */
+var RA4 = 0.04722222222222222222;
+/* 17/360 */
+var RA6 = 0.02215608465608465608;
+module.exports = function(json) {
+ // DGR 2011-03-20 : nagrids -> nadgrids
+ if (json.datumCode && json.datumCode !== 'none') {
+ var datumDef = Datum[json.datumCode];
+ if (datumDef) {
+ json.datum_params = datumDef.towgs84 ? datumDef.towgs84.split(',') : null;
+ json.ellps = datumDef.ellipse;
+ json.datumName = datumDef.datumName ? datumDef.datumName : json.datumCode;
+ }
+ }
+ if (!json.a) { // do we have an ellipsoid?
+ var ellipse = Ellipsoid[json.ellps] ? Ellipsoid[json.ellps] : Ellipsoid.WGS84;
+ extend(json, ellipse);
+ }
+ if (json.rf && !json.b) {
+ json.b = (1.0 - 1.0 / json.rf) * json.a;
+ }
+ if (json.rf === 0 || Math.abs(json.a - json.b) < EPSLN) {
+ json.sphere = true;
+ json.b = json.a;
+ }
+ json.a2 = json.a * json.a; // used in geocentric
+ json.b2 = json.b * json.b; // used in geocentric
+ json.es = (json.a2 - json.b2) / json.a2; // e ^ 2
+ json.e = Math.sqrt(json.es); // eccentricity
+ if (json.R_A) {
+ json.a *= 1 - json.es * (SIXTH + json.es * (RA4 + json.es * RA6));
+ json.a2 = json.a * json.a;
+ json.b2 = json.b * json.b;
+ json.es = 0;
+ }
+ json.ep2 = (json.a2 - json.b2) / json.b2; // used in geocentric
+ if (!json.k0) {
+ json.k0 = 1.0; //default value
+ }
+ //DGR 2010-11-12: axis
+ if (!json.axis) {
+ json.axis = "enu";
+ }
+
+ if (!json.datum) {
+ json.datum = datum(json);
+ }
+ return json;
+};
diff --git a/lib/extend.js b/lib/extend.js
new file mode 100644
index 0000000..a247691
--- /dev/null
+++ b/lib/extend.js
@@ -0,0 +1,14 @@
+module.exports = function(destination, source) {
+ destination = destination || {};
+ var value, property;
+ if (!source) {
+ return destination;
+ }
+ for (property in source) {
+ value = source[property];
+ if (value !== undefined) {
+ destination[property] = value;
+ }
+ }
+ return destination;
+};
diff --git a/lib/global.js b/lib/global.js
new file mode 100644
index 0000000..85f750e
--- /dev/null
+++ b/lib/global.js
@@ -0,0 +1,11 @@
+module.exports = function(defs) {
+ defs('EPSG:4326', "+title=WGS 84 (long/lat) +proj=longlat +ellps=WGS84 +datum=WGS84 +units=degrees");
+ defs('EPSG:4269', "+title=NAD83 (long/lat) +proj=longlat +a=6378137.0 +b=6356752.31414036 +ellps=GRS80 +datum=NAD83 +units=degrees");
+ defs('EPSG:3857', "+title=WGS 84 / Pseudo-Mercator +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs");
+
+ defs.WGS84 = defs['EPSG:4326'];
+ defs['EPSG:3785'] = defs['EPSG:3857']; // maintain backward compat, official code is 3857
+ defs.GOOGLE = defs['EPSG:3857'];
+ defs['EPSG:900913'] = defs['EPSG:3857'];
+ defs['EPSG:102113'] = defs['EPSG:3857'];
+};
diff --git a/lib/includedProjections.js b/lib/includedProjections.js
new file mode 100644
index 0000000..98fa1a9
--- /dev/null
+++ b/lib/includedProjections.js
@@ -0,0 +1,29 @@
+var projs = [
+ require('./projections/tmerc'),
+ require('./projections/utm'),
+ require('./projections/sterea'),
+ require('./projections/stere'),
+ require('./projections/somerc'),
+ require('./projections/omerc'),
+ require('./projections/lcc'),
+ require('./projections/krovak'),
+ require('./projections/cass'),
+ require('./projections/laea'),
+ require('./projections/aea'),
+ require('./projections/gnom'),
+ require('./projections/cea'),
+ require('./projections/eqc'),
+ require('./projections/poly'),
+ require('./projections/nzmg'),
+ require('./projections/mill'),
+ require('./projections/sinu'),
+ require('./projections/moll'),
+ require('./projections/eqdc'),
+ require('./projections/vandg'),
+ require('./projections/aeqd')
+];
+module.exports = function(proj4){
+ projs.forEach(function(proj){
+ proj4.Proj.projections.add(proj);
+ });
+};
\ No newline at end of file
diff --git a/lib/index.js b/lib/index.js
new file mode 100644
index 0000000..df6c187
--- /dev/null
+++ b/lib/index.js
@@ -0,0 +1,12 @@
+var proj4 = require('./core');
+proj4.defaultDatum = 'WGS84'; //default datum
+proj4.Proj = require('./Proj');
+proj4.WGS84 = new proj4.Proj('WGS84');
+proj4.Point = require('./Point');
+proj4.toPoint = require("./common/toPoint");
+proj4.defs = require('./defs');
+proj4.transform = require('./transform');
+proj4.mgrs = require('mgrs');
+proj4.version = require('../package.json').version;
+require('./includedProjections')(proj4);
+module.exports = proj4;
\ No newline at end of file
diff --git a/lib/parseCode.js b/lib/parseCode.js
new file mode 100644
index 0000000..88480a3
--- /dev/null
+++ b/lib/parseCode.js
@@ -0,0 +1,36 @@
+var defs = require('./defs');
+var wkt = require('./wkt');
+var projStr = require('./projString');
+function testObj(code){
+ return typeof code === 'string';
+}
+function testDef(code){
+ return code in defs;
+}
+function testWKT(code){
+ var codeWords = ['GEOGCS','GEOCCS','PROJCS','LOCAL_CS'];
+ return codeWords.reduce(function(a,b){
+ return a+1+code.indexOf(b);
+ },0);
+}
+function testProj(code){
+ return code[0] === '+';
+}
+function parse(code){
+ if (testObj(code)) {
+ //check to see if this is a WKT string
+ if (testDef(code)) {
+ return defs[code];
+ }
+ else if (testWKT(code)) {
+ return wkt(code);
+ }
+ else if (testProj(code)) {
+ return projStr(code);
+ }
+ }else{
+ return code;
+ }
+}
+
+module.exports = parse;
\ No newline at end of file
diff --git a/lib/projString.js b/lib/projString.js
new file mode 100644
index 0000000..d81ed89
--- /dev/null
+++ b/lib/projString.js
@@ -0,0 +1,125 @@
+var D2R = 0.01745329251994329577;
+var PrimeMeridian = require('./constants/PrimeMeridian');
+
+module.exports = function(defData) {
+ var self = {};
+ var paramObj = {};
+ defData.split("+").map(function(v) {
+ return v.trim();
+ }).filter(function(a) {
+ return a;
+ }).forEach(function(a) {
+ var split = a.split("=");
+ split.push(true);
+ paramObj[split[0].toLowerCase()] = split[1];
+ });
+ var paramName, paramVal, paramOutname;
+ var params = {
+ proj: 'projName',
+ datum: 'datumCode',
+ rf: function(v) {
+ self.rf = parseFloat(v);
+ },
+ lat_0: function(v) {
+ self.lat0 = v * D2R;
+ },
+ lat_1: function(v) {
+ self.lat1 = v * D2R;
+ },
+ lat_2: function(v) {
+ self.lat2 = v * D2R;
+ },
+ lat_ts: function(v) {
+ self.lat_ts = v * D2R;
+ },
+ lon_0: function(v) {
+ self.long0 = v * D2R;
+ },
+ lon_1: function(v) {
+ self.long1 = v * D2R;
+ },
+ lon_2: function(v) {
+ self.long2 = v * D2R;
+ },
+ alpha: function(v) {
+ self.alpha = parseFloat(v) * D2R;
+ },
+ lonc: function(v) {
+ self.longc = v * D2R;
+ },
+ x_0: function(v) {
+ self.x0 = parseFloat(v);
+ },
+ y_0: function(v) {
+ self.y0 = parseFloat(v);
+ },
+ k_0: function(v) {
+ self.k0 = parseFloat(v);
+ },
+ k: function(v) {
+ self.k0 = parseFloat(v);
+ },
+ a: function(v) {
+ self.a = parseFloat(v);
+ },
+ b: function(v) {
+ self.b = parseFloat(v);
+ },
+ r_a: function() {
+ self.R_A = true;
+ },
+ zone: function(v) {
+ self.zone = parseInt(v, 10);
+ },
+ south: function() {
+ self.utmSouth = true;
+ },
+ towgs84: function(v) {
+ self.datum_params = v.split(",").map(function(a) {
+ return parseFloat(a);
+ });
+ },
+ to_meter: function(v) {
+ self.to_meter = parseFloat(v);
+ },
+ from_greenwich: function(v) {
+ self.from_greenwich = v * D2R;
+ },
+ pm: function(v) {
+ self.from_greenwich = (PrimeMeridian[v] ? PrimeMeridian[v] : parseFloat(v)) * D2R;
+ },
+ nadgrids: function(v) {
+ if (v === '@null') {
+ self.datumCode = 'none';
+ }
+ else {
+ self.nadgrids = v;
+ }
+ },
+ axis: function(v) {
+ var legalAxis = "ewnsud";
+ if (v.length === 3 && legalAxis.indexOf(v.substr(0, 1)) !== -1 && legalAxis.indexOf(v.substr(1, 1)) !== -1 && legalAxis.indexOf(v.substr(2, 1)) !== -1) {
+ self.axis = v;
+ }
+ }
+ };
+ for (paramName in paramObj) {
+ paramVal = paramObj[paramName];
+ if (paramName in params) {
+ paramOutname = params[paramName];
+ if (typeof paramOutname === 'function') {
+ paramOutname(paramVal);
+ }
+ else {
+ self[paramOutname] = paramVal;
+ }
+ }
+ else {
+ self[paramName] = paramVal;
+ }
+ }
+ if(typeof self.datumCode === 'string' && self.datumCode !== "WGS84"){
+ self.datumCode = self.datumCode.toLowerCase();
+ }
+ return self;
+};
diff --git a/lib/projections.js b/lib/projections.js
new file mode 100644
index 0000000..4e6e458
--- /dev/null
+++ b/lib/projections.js
@@ -0,0 +1,34 @@
+var projs = [
+ require('./projections/merc'),
+ require('./projections/longlat')
+];
+var names = {};
+var projStore = [];
+
+function add(proj, i) {
+ var len = projStore.length;
+ if (!proj.names) {
+ console.log(i);
+ return true;
+ }
+ projStore[len] = proj;
+ proj.names.forEach(function(n) {
+ names[n.toLowerCase()] = len;
+ });
+ return this;
+}
+
+exports.add = add;
+
+exports.get = function(name) {
+ if (!name) {
+ return false;
+ }
+ var n = name.toLowerCase();
+ if (typeof names[n] !== 'undefined' && projStore[names[n]]) {
+ return projStore[names[n]];
+ }
+};
+exports.start = function() {
+ projs.forEach(add);
+};
diff --git a/lib/projections/aea.js b/lib/projections/aea.js
new file mode 100644
index 0000000..dd21192
--- /dev/null
+++ b/lib/projections/aea.js
@@ -0,0 +1,121 @@
+var EPSLN = 1.0e-10;
+var msfnz = require('../common/msfnz');
+var qsfnz = require('../common/qsfnz');
+var adjust_lon = require('../common/adjust_lon');
+var asinz = require('../common/asinz');
+exports.init = function() {
+
+ if (Math.abs(this.lat1 + this.lat2) < EPSLN) {
+ return;
+ }
+ this.temp = this.b / this.a;
+ this.es = 1 - Math.pow(this.temp, 2);
+ this.e3 = Math.sqrt(this.es);
+
+ this.sin_po = Math.sin(this.lat1);
+ this.cos_po = Math.cos(this.lat1);
+ this.t1 = this.sin_po;
+ this.con = this.sin_po;
+ this.ms1 = msfnz(this.e3, this.sin_po, this.cos_po);
+ this.qs1 = qsfnz(this.e3, this.sin_po, this.cos_po);
+
+ this.sin_po = Math.sin(this.lat2);
+ this.cos_po = Math.cos(this.lat2);
+ this.t2 = this.sin_po;
+ this.ms2 = msfnz(this.e3, this.sin_po, this.cos_po);
+ this.qs2 = qsfnz(this.e3, this.sin_po, this.cos_po);
+
+ this.sin_po = Math.sin(this.lat0);
+ this.cos_po = Math.cos(this.lat0);
+ this.t3 = this.sin_po;
+ this.qs0 = qsfnz(this.e3, this.sin_po, this.cos_po);
+
+ if (Math.abs(this.lat1 - this.lat2) > EPSLN) {
+ this.ns0 = (this.ms1 * this.ms1 - this.ms2 * this.ms2) / (this.qs2 - this.qs1);
+ }
+ else {
+ this.ns0 = this.con;
+ }
+ this.c = this.ms1 * this.ms1 + this.ns0 * this.qs1;
+ this.rh = this.a * Math.sqrt(this.c - this.ns0 * this.qs0) / this.ns0;
+};
+
+/* Albers Conical Equal Area forward equations--mapping lat,long to x,y
+ -------------------------------------------------------------------*/
+exports.forward = function(p) {
+
+ var lon = p.x;
+ var lat = p.y;
+
+ this.sin_phi = Math.sin(lat);
+ this.cos_phi = Math.cos(lat);
+
+ var qs = qsfnz(this.e3, this.sin_phi, this.cos_phi);
+ var rh1 = this.a * Math.sqrt(this.c - this.ns0 * qs) / this.ns0;
+ var theta = this.ns0 * adjust_lon(lon - this.long0);
+ var x = rh1 * Math.sin(theta) + this.x0;
+ var y = this.rh - rh1 * Math.cos(theta) + this.y0;
+
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+
+exports.inverse = function(p) {
+ var rh1, qs, con, theta, lon, lat;
+
+ p.x -= this.x0;
+ p.y = this.rh - p.y + this.y0;
+ if (this.ns0 >= 0) {
+ rh1 = Math.sqrt(p.x * p.x + p.y * p.y);
+ con = 1;
+ }
+ else {
+ rh1 = -Math.sqrt(p.x * p.x + p.y * p.y);
+ con = -1;
+ }
+ theta = 0;
+ if (rh1 !== 0) {
+ theta = Math.atan2(con * p.x, con * p.y);
+ }
+ con = rh1 * this.ns0 / this.a;
+ if (this.sphere) {
+ lat = Math.asin((this.c - con * con) / (2 * this.ns0));
+ }
+ else {
+ qs = (this.c - con * con) / this.ns0;
+ lat = this.phi1z(this.e3, qs);
+ }
+
+ lon = adjust_lon(theta / this.ns0 + this.long0);
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+
+/* Function to compute phi1, the latitude for the inverse of the
+ Albers Conical Equal-Area projection.
+-------------------------------------------*/
+exports.phi1z = function(eccent, qs) {
+ var sinphi, cosphi, con, com, dphi;
+ var phi = asinz(0.5 * qs);
+ if (eccent < EPSLN) {
+ return phi;
+ }
+
+ var eccnts = eccent * eccent;
+ for (var i = 1; i <= 25; i++) {
+ sinphi = Math.sin(phi);
+ cosphi = Math.cos(phi);
+ con = eccent * sinphi;
+ com = 1 - con * con;
+ dphi = 0.5 * com * com / cosphi * (qs / (1 - eccnts) - sinphi / com + 0.5 / eccent * Math.log((1 - con) / (1 + con)));
+ phi = phi + dphi;
+ if (Math.abs(dphi) <= 1e-7) {
+ return phi;
+ }
+ }
+ return null;
+};
+exports.names = ["Albers_Conic_Equal_Area", "Albers", "aea"];
diff --git a/lib/projections/aeqd.js b/lib/projections/aeqd.js
new file mode 100644
index 0000000..52aca72
--- /dev/null
+++ b/lib/projections/aeqd.js
@@ -0,0 +1,197 @@
+var adjust_lon = require('../common/adjust_lon');
+var HALF_PI = Math.PI/2;
+var EPSLN = 1.0e-10;
+var mlfn = require('../common/mlfn');
+var e0fn = require('../common/e0fn');
+var e1fn = require('../common/e1fn');
+var e2fn = require('../common/e2fn');
+var e3fn = require('../common/e3fn');
+var gN = require('../common/gN');
+var asinz = require('../common/asinz');
+var imlfn = require('../common/imlfn');
+exports.init = function() {
+ this.sin_p12 = Math.sin(this.lat0);
+ this.cos_p12 = Math.cos(this.lat0);
+};
+
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+ var sinphi = Math.sin(p.y);
+ var cosphi = Math.cos(p.y);
+ var dlon = adjust_lon(lon - this.long0);
+ var e0, e1, e2, e3, Mlp, Ml, tanphi, Nl1, Nl, psi, Az, G, H, GH, Hs, c, kp, cos_c, s, s2, s3, s4, s5;
+ if (this.sphere) {
+ if (Math.abs(this.sin_p12 - 1) <= EPSLN) {
+ //North Pole case
+ p.x = this.x0 + this.a * (HALF_PI - lat) * Math.sin(dlon);
+ p.y = this.y0 - this.a * (HALF_PI - lat) * Math.cos(dlon);
+ return p;
+ }
+ else if (Math.abs(this.sin_p12 + 1) <= EPSLN) {
+ //South Pole case
+ p.x = this.x0 + this.a * (HALF_PI + lat) * Math.sin(dlon);
+ p.y = this.y0 + this.a * (HALF_PI + lat) * Math.cos(dlon);
+ return p;
+ }
+ else {
+ //default case
+ cos_c = this.sin_p12 * sinphi + this.cos_p12 * cosphi * Math.cos(dlon);
+ c = Math.acos(cos_c);
+ kp = c / Math.sin(c);
+ p.x = this.x0 + this.a * kp * cosphi * Math.sin(dlon);
+ p.y = this.y0 + this.a * kp * (this.cos_p12 * sinphi - this.sin_p12 * cosphi * Math.cos(dlon));
+ return p;
+ }
+ }
+ else {
+ e0 = e0fn(this.es);
+ e1 = e1fn(this.es);
+ e2 = e2fn(this.es);
+ e3 = e3fn(this.es);
+ if (Math.abs(this.sin_p12 - 1) <= EPSLN) {
+ //North Pole case
+ Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI);
+ Ml = this.a * mlfn(e0, e1, e2, e3, lat);
+ p.x = this.x0 + (Mlp - Ml) * Math.sin(dlon);
+ p.y = this.y0 - (Mlp - Ml) * Math.cos(dlon);
+ return p;
+ }
+ else if (Math.abs(this.sin_p12 + 1) <= EPSLN) {
+ //South Pole case
+ Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI);
+ Ml = this.a * mlfn(e0, e1, e2, e3, lat);
+ p.x = this.x0 + (Mlp + Ml) * Math.sin(dlon);
+ p.y = this.y0 + (Mlp + Ml) * Math.cos(dlon);
+ return p;
+ }
+ else {
+ //Default case
+ tanphi = sinphi / cosphi;
+ Nl1 = gN(this.a, this.e, this.sin_p12);
+ Nl = gN(this.a, this.e, sinphi);
+ psi = Math.atan((1 - this.es) * tanphi + this.es * Nl1 * this.sin_p12 / (Nl * cosphi));
+ Az = Math.atan2(Math.sin(dlon), this.cos_p12 * Math.tan(psi) - this.sin_p12 * Math.cos(dlon));
+ if (Az === 0) {
+ s = Math.asin(this.cos_p12 * Math.sin(psi) - this.sin_p12 * Math.cos(psi));
+ }
+ else if (Math.abs(Math.abs(Az) - Math.PI) <= EPSLN) {
+ s = -Math.asin(this.cos_p12 * Math.sin(psi) - this.sin_p12 * Math.cos(psi));
+ }
+ else {
+ s = Math.asin(Math.sin(dlon) * Math.cos(psi) / Math.sin(Az));
+ }
+ G = this.e * this.sin_p12 / Math.sqrt(1 - this.es);
+ H = this.e * this.cos_p12 * Math.cos(Az) / Math.sqrt(1 - this.es);
+ GH = G * H;
+ Hs = H * H;
+ s2 = s * s;
+ s3 = s2 * s;
+ s4 = s3 * s;
+ s5 = s4 * s;
+ c = Nl1 * s * (1 - s2 * Hs * (1 - Hs) / 6 + s3 / 8 * GH * (1 - 2 * Hs) + s4 / 120 * (Hs * (4 - 7 * Hs) - 3 * G * G * (1 - 7 * Hs)) - s5 / 48 * GH);
+ p.x = this.x0 + c * Math.sin(Az);
+ p.y = this.y0 + c * Math.cos(Az);
+ return p;
+ }
+ }
+
+
+};
+
+exports.inverse = function(p) {
+ p.x -= this.x0;
+ p.y -= this.y0;
+ var rh, z, sinz, cosz, lon, lat, con, e0, e1, e2, e3, Mlp, M, N1, psi, Az, cosAz, tmp, A, B, D, Ee, F;
+ if (this.sphere) {
+ rh = Math.sqrt(p.x * p.x + p.y * p.y);
+ if (rh > (2 * HALF_PI * this.a)) {
+ return;
+ }
+ z = rh / this.a;
+
+ sinz = Math.sin(z);
+ cosz = Math.cos(z);
+
+ lon = this.long0;
+ if (Math.abs(rh) <= EPSLN) {
+ lat = this.lat0;
+ }
+ else {
+ lat = asinz(cosz * this.sin_p12 + (p.y * sinz * this.cos_p12) / rh);
+ con = Math.abs(this.lat0) - HALF_PI;
+ if (Math.abs(con) <= EPSLN) {
+ if (this.lat0 >= 0) {
+ lon = adjust_lon(this.long0 + Math.atan2(p.x, - p.y));
+ }
+ else {
+ lon = adjust_lon(this.long0 - Math.atan2(-p.x, p.y));
+ }
+ }
+ else {
+ /*con = cosz - this.sin_p12 * Math.sin(lat);
+ if ((Math.abs(con) < EPSLN) && (Math.abs(p.x) < EPSLN)) {
+ //no-op, just keep the lon value as is
+ } else {
+ var temp = Math.atan2((p.x * sinz * this.cos_p12), (con * rh));
+ lon = adjust_lon(this.long0 + Math.atan2((p.x * sinz * this.cos_p12), (con * rh)));
+ }*/
+ lon = adjust_lon(this.long0 + Math.atan2(p.x * sinz, rh * this.cos_p12 * cosz - p.y * this.sin_p12 * sinz));
+ }
+ }
+
+ p.x = lon;
+ p.y = lat;
+ return p;
+ }
+ else {
+ e0 = e0fn(this.es);
+ e1 = e1fn(this.es);
+ e2 = e2fn(this.es);
+ e3 = e3fn(this.es);
+ if (Math.abs(this.sin_p12 - 1) <= EPSLN) {
+ //North pole case
+ Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI);
+ rh = Math.sqrt(p.x * p.x + p.y * p.y);
+ M = Mlp - rh;
+ lat = imlfn(M / this.a, e0, e1, e2, e3);
+ lon = adjust_lon(this.long0 + Math.atan2(p.x, - 1 * p.y));
+ p.x = lon;
+ p.y = lat;
+ return p;
+ }
+ else if (Math.abs(this.sin_p12 + 1) <= EPSLN) {
+ //South pole case
+ Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI);
+ rh = Math.sqrt(p.x * p.x + p.y * p.y);
+ M = rh - Mlp;
+
+ lat = imlfn(M / this.a, e0, e1, e2, e3);
+ lon = adjust_lon(this.long0 + Math.atan2(p.x, p.y));
+ p.x = lon;
+ p.y = lat;
+ return p;
+ }
+ else {
+ //default case
+ rh = Math.sqrt(p.x * p.x + p.y * p.y);
+ Az = Math.atan2(p.x, p.y);
+ N1 = gN(this.a, this.e, this.sin_p12);
+ cosAz = Math.cos(Az);
+ tmp = this.e * this.cos_p12 * cosAz;
+ A = -tmp * tmp / (1 - this.es);
+ B = 3 * this.es * (1 - A) * this.sin_p12 * this.cos_p12 * cosAz / (1 - this.es);
+ D = rh / N1;
+ Ee = D - A * (1 + A) * Math.pow(D, 3) / 6 - B * (1 + 3 * A) * Math.pow(D, 4) / 24;
+ F = 1 - A * Ee * Ee / 2 - D * Ee * Ee * Ee / 6;
+ psi = Math.asin(this.sin_p12 * Math.cos(Ee) + this.cos_p12 * Math.sin(Ee) * cosAz);
+ lon = adjust_lon(this.long0 + Math.asin(Math.sin(Az) * Math.sin(Ee) / Math.cos(psi)));
+ lat = Math.atan((1 - this.es * F * this.sin_p12 / Math.sin(psi)) * Math.tan(psi) / (1 - this.es));
+ p.x = lon;
+ p.y = lat;
+ return p;
+ }
+ }
+
+};
+exports.names = ["Azimuthal_Equidistant", "aeqd"];
diff --git a/lib/projections/cass.js b/lib/projections/cass.js
new file mode 100644
index 0000000..422222e
--- /dev/null
+++ b/lib/projections/cass.js
@@ -0,0 +1,103 @@
+var mlfn = require('../common/mlfn');
+var e0fn = require('../common/e0fn');
+var e1fn = require('../common/e1fn');
+var e2fn = require('../common/e2fn');
+var e3fn = require('../common/e3fn');
+var gN = require('../common/gN');
+var adjust_lon = require('../common/adjust_lon');
+var adjust_lat = require('../common/adjust_lat');
+var imlfn = require('../common/imlfn');
+var HALF_PI = Math.PI/2;
+var EPSLN = 1.0e-10;
+exports.init = function() {
+ if (!this.sphere) {
+ this.e0 = e0fn(this.es);
+ this.e1 = e1fn(this.es);
+ this.e2 = e2fn(this.es);
+ this.e3 = e3fn(this.es);
+ this.ml0 = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, this.lat0);
+ }
+};
+
+
+
+/* Cassini forward equations--mapping lat,long to x,y
+ -----------------------------------------------------------------------*/
+exports.forward = function(p) {
+
+ /* Forward equations
+ -----------------*/
+ var x, y;
+ var lam = p.x;
+ var phi = p.y;
+ lam = adjust_lon(lam - this.long0);
+
+ if (this.sphere) {
+ x = this.a * Math.asin(Math.cos(phi) * Math.sin(lam));
+ y = this.a * (Math.atan2(Math.tan(phi), Math.cos(lam)) - this.lat0);
+ }
+ else {
+ //ellipsoid
+ var sinphi = Math.sin(phi);
+ var cosphi = Math.cos(phi);
+ var nl = gN(this.a, this.e, sinphi);
+ var tl = Math.tan(phi) * Math.tan(phi);
+ var al = lam * Math.cos(phi);
+ var asq = al * al;
+ var cl = this.es * cosphi * cosphi / (1 - this.es);
+ var ml = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, phi);
+
+ x = nl * al * (1 - asq * tl * (1 / 6 - (8 - tl + 8 * cl) * asq / 120));
+ y = ml - this.ml0 + nl * sinphi / cosphi * asq * (0.5 + (5 - tl + 6 * cl) * asq / 24);
+
+
+ }
+
+ p.x = x + this.x0;
+ p.y = y + this.y0;
+ return p;
+};
+
+/* Inverse equations
+ -----------------*/
+exports.inverse = function(p) {
+ p.x -= this.x0;
+ p.y -= this.y0;
+ var x = p.x / this.a;
+ var y = p.y / this.a;
+ var phi, lam;
+
+ if (this.sphere) {
+ var dd = y + this.lat0;
+ phi = Math.asin(Math.sin(dd) * Math.cos(x));
+ lam = Math.atan2(Math.tan(x), Math.cos(dd));
+ }
+ else {
+ /* ellipsoid */
+ var ml1 = this.ml0 / this.a + y;
+ var phi1 = imlfn(ml1, this.e0, this.e1, this.e2, this.e3);
+ if (Math.abs(Math.abs(phi1) - HALF_PI) <= EPSLN) {
+ p.x = this.long0;
+ p.y = HALF_PI;
+ if (y < 0) {
+ p.y *= -1;
+ }
+ return p;
+ }
+ var nl1 = gN(this.a, this.e, Math.sin(phi1));
+
+ var rl1 = nl1 * nl1 * nl1 / this.a / this.a * (1 - this.es);
+ var tl1 = Math.pow(Math.tan(phi1), 2);
+ var dl = x * this.a / nl1;
+ var dsq = dl * dl;
+ phi = phi1 - nl1 * Math.tan(phi1) / rl1 * dl * dl * (0.5 - (1 + 3 * tl1) * dl * dl / 24);
+ lam = dl * (1 - dsq * (tl1 / 3 + (1 + 3 * tl1) * tl1 * dsq / 15)) / Math.cos(phi1);
+
+ }
+
+ p.x = adjust_lon(lam + this.long0);
+ p.y = adjust_lat(phi);
+ return p;
+
+};
+exports.names = ["Cassini", "Cassini_Soldner", "cass"];
\ No newline at end of file
diff --git a/lib/projections/cea.js b/lib/projections/cea.js
new file mode 100644
index 0000000..a85d99b
--- /dev/null
+++ b/lib/projections/cea.js
@@ -0,0 +1,63 @@
+var adjust_lon = require('../common/adjust_lon');
+var qsfnz = require('../common/qsfnz');
+var msfnz = require('../common/msfnz');
+var iqsfnz = require('../common/iqsfnz');
+/*
+ reference:
+ "Cartographic Projection Procedures for the UNIX Environment-
+ A User's Manual" by Gerald I. Evenden,
+ USGS Open File Report 90-284and Release 4 Interim Reports (2003)
+*/
+exports.init = function() {
+ //no-op
+ if (!this.sphere) {
+ this.k0 = msfnz(this.e, Math.sin(this.lat_ts), Math.cos(this.lat_ts));
+ }
+};
+
+
+/* Cylindrical Equal Area forward equations--mapping lat,long to x,y
+ ------------------------------------------------------------*/
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+ var x, y;
+ /* Forward equations
+ -----------------*/
+ var dlon = adjust_lon(lon - this.long0);
+ if (this.sphere) {
+ x = this.x0 + this.a * dlon * Math.cos(this.lat_ts);
+ y = this.y0 + this.a * Math.sin(lat) / Math.cos(this.lat_ts);
+ }
+ else {
+ var qs = qsfnz(this.e, Math.sin(lat));
+ x = this.x0 + this.a * this.k0 * dlon;
+ y = this.y0 + this.a * qs * 0.5 / this.k0;
+ }
+
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+/* Cylindrical Equal Area inverse equations--mapping x,y to lat/long
+ ------------------------------------------------------------*/
+exports.inverse = function(p) {
+ p.x -= this.x0;
+ p.y -= this.y0;
+ var lon, lat;
+
+ if (this.sphere) {
+ lon = adjust_lon(this.long0 + (p.x / this.a) / Math.cos(this.lat_ts));
+ lat = Math.asin((p.y / this.a) * Math.cos(this.lat_ts));
+ }
+ else {
+ lat = iqsfnz(this.e, 2 * p.y * this.k0 / this.a);
+ lon = adjust_lon(this.long0 + p.x / (this.a * this.k0));
+ }
+
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["cea"];
diff --git a/lib/projections/eqc.js b/lib/projections/eqc.js
new file mode 100644
index 0000000..575f2b4
--- /dev/null
+++ b/lib/projections/eqc.js
@@ -0,0 +1,41 @@
+var adjust_lon = require('../common/adjust_lon');
+var adjust_lat = require('../common/adjust_lat');
+exports.init = function() {
+
+ this.x0 = this.x0 || 0;
+ this.y0 = this.y0 || 0;
+ this.lat0 = this.lat0 || 0;
+ this.long0 = this.long0 || 0;
+ this.lat_ts = this.lat_ts || 0;
+ this.title = this.title || "Equidistant Cylindrical (Plate Carre)";
+
+ this.rc = Math.cos(this.lat_ts);
+};
+
+
+// forward equations--mapping lat,long to x,y
+// -----------------------------------------------------------------
+exports.forward = function(p) {
+
+ var lon = p.x;
+ var lat = p.y;
+
+ var dlon = adjust_lon(lon - this.long0);
+ var dlat = adjust_lat(lat - this.lat0);
+ p.x = this.x0 + (this.a * dlon * this.rc);
+ p.y = this.y0 + (this.a * dlat);
+ return p;
+};
+
+// inverse equations--mapping x,y to lat/long
+// -----------------------------------------------------------------
+exports.inverse = function(p) {
+
+ var x = p.x;
+ var y = p.y;
+
+ p.x = adjust_lon(this.long0 + ((x - this.x0) / (this.a * this.rc)));
+ p.y = adjust_lat(this.lat0 + ((y - this.y0) / (this.a)));
+ return p;
+};
+exports.names = ["Equirectangular", "Equidistant_Cylindrical", "eqc"];
diff --git a/lib/projections/eqdc.js b/lib/projections/eqdc.js
new file mode 100644
index 0000000..215a22c
--- /dev/null
+++ b/lib/projections/eqdc.js
@@ -0,0 +1,110 @@
+var e0fn = require('../common/e0fn');
+var e1fn = require('../common/e1fn');
+var e2fn = require('../common/e2fn');
+var e3fn = require('../common/e3fn');
+var msfnz = require('../common/msfnz');
+var mlfn = require('../common/mlfn');
+var adjust_lon = require('../common/adjust_lon');
+var adjust_lat = require('../common/adjust_lat');
+var imlfn = require('../common/imlfn');
+var EPSLN = 1.0e-10;
+exports.init = function() {
+
+ /* Place parameters in static storage for common use
+ -------------------------------------------------*/
+ // Standard Parallels cannot be equal and on opposite sides of the equator
+ if (Math.abs(this.lat1 + this.lat2) < EPSLN) {
+ return;
+ }
+ this.lat2 = this.lat2 || this.lat1;
+ this.temp = this.b / this.a;
+ this.es = 1 - Math.pow(this.temp, 2);
+ this.e = Math.sqrt(this.es);
+ this.e0 = e0fn(this.es);
+ this.e1 = e1fn(this.es);
+ this.e2 = e2fn(this.es);
+ this.e3 = e3fn(this.es);
+
+ this.sinphi = Math.sin(this.lat1);
+ this.cosphi = Math.cos(this.lat1);
+
+ this.ms1 = msfnz(this.e, this.sinphi, this.cosphi);
+ this.ml1 = mlfn(this.e0, this.e1, this.e2, this.e3, this.lat1);
+
+ if (Math.abs(this.lat1 - this.lat2) < EPSLN) {
+ this.ns = this.sinphi;
+ }
+ else {
+ this.sinphi = Math.sin(this.lat2);
+ this.cosphi = Math.cos(this.lat2);
+ this.ms2 = msfnz(this.e, this.sinphi, this.cosphi);
+ this.ml2 = mlfn(this.e0, this.e1, this.e2, this.e3, this.lat2);
+ this.ns = (this.ms1 - this.ms2) / (this.ml2 - this.ml1);
+ }
+ this.g = this.ml1 + this.ms1 / this.ns;
+ this.ml0 = mlfn(this.e0, this.e1, this.e2, this.e3, this.lat0);
+ this.rh = this.a * (this.g - this.ml0);
+};
+
+
+/* Equidistant Conic forward equations--mapping lat,long to x,y
+ -----------------------------------------------------------*/
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+ var rh1;
+
+ /* Forward equations
+ -----------------*/
+ if (this.sphere) {
+ rh1 = this.a * (this.g - lat);
+ }
+ else {
+ var ml = mlfn(this.e0, this.e1, this.e2, this.e3, lat);
+ rh1 = this.a * (this.g - ml);
+ }
+ var theta = this.ns * adjust_lon(lon - this.long0);
+ var x = this.x0 + rh1 * Math.sin(theta);
+ var y = this.y0 + this.rh - rh1 * Math.cos(theta);
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+/* Inverse equations
+ -----------------*/
+exports.inverse = function(p) {
+ p.x -= this.x0;
+ p.y = this.rh - p.y + this.y0;
+ var con, rh1, lat, lon;
+ if (this.ns >= 0) {
+ rh1 = Math.sqrt(p.x * p.x + p.y * p.y);
+ con = 1;
+ }
+ else {
+ rh1 = -Math.sqrt(p.x * p.x + p.y * p.y);
+ con = -1;
+ }
+ var theta = 0;
+ if (rh1 !== 0) {
+ theta = Math.atan2(con * p.x, con * p.y);
+ }
+
+ if (this.sphere) {
+ lon = adjust_lon(this.long0 + theta / this.ns);
+ lat = adjust_lat(this.g - rh1 / this.a);
+ p.x = lon;
+ p.y = lat;
+ return p;
+ }
+ else {
+ var ml = this.g - rh1 / this.a;
+ lat = imlfn(ml, this.e0, this.e1, this.e2, this.e3);
+ lon = adjust_lon(this.long0 + theta / this.ns);
+ p.x = lon;
+ p.y = lat;
+ return p;
+ }
+
+};
+exports.names = ["Equidistant_Conic", "eqdc"];
diff --git a/lib/projections/equi.js b/lib/projections/equi.js
new file mode 100644
index 0000000..c1edfdc
--- /dev/null
+++ b/lib/projections/equi.js
@@ -0,0 +1,44 @@
+var adjust_lon = require('../common/adjust_lon');
+exports.init = function() {
+ this.x0 = this.x0 || 0;
+ this.y0 = this.y0 || 0;
+ this.lat0 = this.lat0 || 0;
+ this.long0 = this.long0 || 0;
+ ///this.t2;
+};
+
+
+
+/* Equirectangular forward equations--mapping lat,long to x,y
+ ---------------------------------------------------------*/
+exports.forward = function(p) {
+
+ var lon = p.x;
+ var lat = p.y;
+
+ var dlon = adjust_lon(lon - this.long0);
+ var x = this.x0 + this.a * dlon * Math.cos(this.lat0);
+ var y = this.y0 + this.a * lat;
+
+ this.t1 = x;
+ this.t2 = Math.cos(this.lat0);
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+
+
+/* Equirectangular inverse equations--mapping x,y to lat/long
+ ---------------------------------------------------------*/
+exports.inverse = function(p) {
+
+ p.x -= this.x0;
+ p.y -= this.y0;
+ var lat = p.y / this.a;
+
+ var lon = adjust_lon(this.long0 + p.x / (this.a * Math.cos(this.lat0)));
+ p.x = lon;
+ p.y = lat;
+};
+exports.names = ["equi"];
diff --git a/lib/projections/gauss.js b/lib/projections/gauss.js
new file mode 100644
index 0000000..3ed498f
--- /dev/null
+++ b/lib/projections/gauss.js
@@ -0,0 +1,45 @@
+var FORTPI = Math.PI/4;
+var srat = require('../common/srat');
+var HALF_PI = Math.PI/2;
+var MAX_ITER = 20;
+exports.init = function() {
+ var sphi = Math.sin(this.lat0);
+ var cphi = Math.cos(this.lat0);
+ cphi *= cphi;
+ this.rc = Math.sqrt(1 - this.es) / (1 - this.es * sphi * sphi);
+ this.C = Math.sqrt(1 + this.es * cphi * cphi / (1 - this.es));
+ this.phic0 = Math.asin(sphi / this.C);
+ this.ratexp = 0.5 * this.C * this.e;
+ this.K = Math.tan(0.5 * this.phic0 + FORTPI) / (Math.pow(Math.tan(0.5 * this.lat0 + FORTPI), this.C) * srat(this.e * sphi, this.ratexp));
+};
+
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+
+ p.y = 2 * Math.atan(this.K * Math.pow(Math.tan(0.5 * lat + FORTPI), this.C) * srat(this.e * Math.sin(lat), this.ratexp)) - HALF_PI;
+ p.x = this.C * lon;
+ return p;
+};
+
+exports.inverse = function(p) {
+ var DEL_TOL = 1e-14;
+ var lon = p.x / this.C;
+ var lat = p.y;
+ var num = Math.pow(Math.tan(0.5 * lat + FORTPI) / this.K, 1 / this.C);
+ for (var i = MAX_ITER; i > 0; --i) {
+ lat = 2 * Math.atan(num * srat(this.e * Math.sin(p.y), - 0.5 * this.e)) - HALF_PI;
+ if (Math.abs(lat - p.y) < DEL_TOL) {
+ break;
+ }
+ p.y = lat;
+ }
+ /* convergence failed */
+ if (!i) {
+ return null;
+ }
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["gauss"];
diff --git a/lib/projections/gnom.js b/lib/projections/gnom.js
new file mode 100644
index 0000000..9d0deba
--- /dev/null
+++ b/lib/projections/gnom.js
@@ -0,0 +1,99 @@
+var adjust_lon = require('../common/adjust_lon');
+var EPSLN = 1.0e-10;
+var asinz = require('../common/asinz');
+
+/*
+ reference:
+ Wolfram Mathworld "Gnomonic Projection"
+ http://mathworld.wolfram.com/GnomonicProjection.html
+ Accessed: 12th November 2009
+ */
+exports.init = function() {
+
+ /* Place parameters in static storage for common use
+ -------------------------------------------------*/
+ this.sin_p14 = Math.sin(this.lat0);
+ this.cos_p14 = Math.cos(this.lat0);
+ // Approximation for projecting points to the horizon (infinity)
+ this.infinity_dist = 1000 * this.a;
+ this.rc = 1;
+};
+
+
+/* Gnomonic forward equations--mapping lat,long to x,y
+ ---------------------------------------------------*/
+exports.forward = function(p) {
+ var sinphi, cosphi; /* sin and cos value */
+ var dlon; /* delta longitude value */
+ var coslon; /* cos of longitude */
+ var ksp; /* scale factor */
+ var g;
+ var x, y;
+ var lon = p.x;
+ var lat = p.y;
+ /* Forward equations
+ -----------------*/
+ dlon = adjust_lon(lon - this.long0);
+
+ sinphi = Math.sin(lat);
+ cosphi = Math.cos(lat);
+
+ coslon = Math.cos(dlon);
+ g = this.sin_p14 * sinphi + this.cos_p14 * cosphi * coslon;
+ ksp = 1;
+ if ((g > 0) || (Math.abs(g) <= EPSLN)) {
+ x = this.x0 + this.a * ksp * cosphi * Math.sin(dlon) / g;
+ y = this.y0 + this.a * ksp * (this.cos_p14 * sinphi - this.sin_p14 * cosphi * coslon) / g;
+ }
+ else {
+
+ // Point is in the opposing hemisphere and is unprojectable
+ // We still need to return a reasonable point, so we project
+ // to infinity, on a bearing
+ // equivalent to the northern hemisphere equivalent
+ // This is a reasonable approximation for short shapes and lines that
+ // straddle the horizon.
+
+ x = this.x0 + this.infinity_dist * cosphi * Math.sin(dlon);
+ y = this.y0 + this.infinity_dist * (this.cos_p14 * sinphi - this.sin_p14 * cosphi * coslon);
+
+ }
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+
+exports.inverse = function(p) {
+ var rh; /* Rho */
+ var sinc, cosc;
+ var c;
+ var lon, lat;
+
+ /* Inverse equations
+ -----------------*/
+ p.x = (p.x - this.x0) / this.a;
+ p.y = (p.y - this.y0) / this.a;
+
+ p.x /= this.k0;
+ p.y /= this.k0;
+
+ if ((rh = Math.sqrt(p.x * p.x + p.y * p.y))) {
+ c = Math.atan2(rh, this.rc);
+ sinc = Math.sin(c);
+ cosc = Math.cos(c);
+
+ lat = asinz(cosc * this.sin_p14 + (p.y * sinc * this.cos_p14) / rh);
+ lon = Math.atan2(p.x * sinc, rh * this.cos_p14 * cosc - p.y * this.sin_p14 * sinc);
+ lon = adjust_lon(this.long0 + lon);
+ }
+ else {
+ lat = this.phic0;
+ lon = 0;
+ }
+
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["gnom"];
diff --git a/lib/projections/gstmerc.js b/lib/projections/gstmerc.js
new file mode 100644
index 0000000..6424a79
--- /dev/null
+++ b/lib/projections/gstmerc.js
@@ -0,0 +1,56 @@
+var latiso = require('../common/latiso');
+var sinh = require('../common/sinh');
+var cosh = require('../common/cosh');
+var invlatiso = require('../common/invlatiso');
+exports.init = function() {
+
+ // array of: a, b, lon0, lat0, k0, x0, y0
+ var temp = this.b / this.a;
+ this.e = Math.sqrt(1 - temp * temp);
+ this.lc = this.long0;
+ this.rs = Math.sqrt(1 + this.e * this.e * Math.pow(Math.cos(this.lat0), 4) / (1 - this.e * this.e));
+ var sinz = Math.sin(this.lat0);
+ var pc = Math.asin(sinz / this.rs);
+ var sinzpc = Math.sin(pc);
+ this.cp = latiso(0, pc, sinzpc) - this.rs * latiso(this.e, this.lat0, sinz);
+ this.n2 = this.k0 * this.a * Math.sqrt(1 - this.e * this.e) / (1 - this.e * this.e * sinz * sinz);
+ this.xs = this.x0;
+ this.ys = this.y0 - this.n2 * pc;
+
+ if (!this.title) {
+ this.title = "Gauss Schreiber transverse mercator";
+ }
+};
+
+
+// forward equations--mapping lat,long to x,y
+// -----------------------------------------------------------------
+exports.forward = function(p) {
+
+ var lon = p.x;
+ var lat = p.y;
+
+ var L = this.rs * (lon - this.lc);
+ var Ls = this.cp + (this.rs * latiso(this.e, lat, Math.sin(lat)));
+ var lat1 = Math.asin(Math.sin(L) / cosh(Ls));
+ var Ls1 = latiso(0, lat1, Math.sin(lat1));
+ p.x = this.xs + (this.n2 * Ls1);
+ p.y = this.ys + (this.n2 * Math.atan(sinh(Ls) / Math.cos(L)));
+ return p;
+};
+
+// inverse equations--mapping x,y to lat/long
+// -----------------------------------------------------------------
+exports.inverse = function(p) {
+
+ var x = p.x;
+ var y = p.y;
+
+ var L = Math.atan(sinh((x - this.xs) / this.n2) / Math.cos((y - this.ys) / this.n2));
+ var lat1 = Math.asin(Math.sin((y - this.ys) / this.n2) / cosh((x - this.xs) / this.n2));
+ var LC = latiso(0, lat1, Math.sin(lat1));
+ p.x = this.lc + L / this.rs;
+ p.y = invlatiso(this.e, (LC - this.cp) / this.rs);
+ return p;
+};
+exports.names = ["gstmerg"];
diff --git a/lib/projections/krovak.js b/lib/projections/krovak.js
new file mode 100644
index 0000000..3c64e33
--- /dev/null
+++ b/lib/projections/krovak.js
@@ -0,0 +1,98 @@
+var adjust_lon = require('../common/adjust_lon');
+exports.init = function() {
+ this.a = 6377397.155;
+ this.es = 0.006674372230614;
+ this.e = Math.sqrt(this.es);
+ if (!this.lat0) {
+ this.lat0 = 0.863937979737193;
+ }
+ if (!this.long0) {
+ this.long0 = 0.7417649320975901 - 0.308341501185665;
+ }
+ /* if scale not set default to 0.9999 */
+ if (!this.k0) {
+ this.k0 = 0.9999;
+ }
+ this.s45 = 0.785398163397448; /* 45 */
+ this.s90 = 2 * this.s45;
+ this.fi0 = this.lat0;
+ this.e2 = this.es;
+ this.e = Math.sqrt(this.e2);
+ this.alfa = Math.sqrt(1 + (this.e2 * Math.pow(Math.cos(this.fi0), 4)) / (1 - this.e2));
+ this.uq = 1.04216856380474;
+ this.u0 = Math.asin(Math.sin(this.fi0) / this.alfa);
+ this.g = Math.pow((1 + this.e * Math.sin(this.fi0)) / (1 - this.e * Math.sin(this.fi0)), this.alfa * this.e / 2);
+ this.k = Math.tan(this.u0 / 2 + this.s45) / Math.pow(Math.tan(this.fi0 / 2 + this.s45), this.alfa) * this.g;
+ this.k1 = this.k0;
+ this.n0 = this.a * Math.sqrt(1 - this.e2) / (1 - this.e2 * Math.pow(Math.sin(this.fi0), 2));
+ this.s0 = 1.37008346281555;
+ this.n = Math.sin(this.s0);
+ this.ro0 = this.k1 * this.n0 / Math.tan(this.s0);
+ this.ad = this.s90 - this.uq;
+};
+
+/* ellipsoid */
+/* calculate xy from lat/lon */
+/* Constants, identical to inverse transform function */
+exports.forward = function(p) {
+ var gfi, u, deltav, s, d, eps, ro;
+ var lon = p.x;
+ var lat = p.y;
+ var delta_lon = adjust_lon(lon - this.long0);
+ /* Transformation */
+ gfi = Math.pow(((1 + this.e * Math.sin(lat)) / (1 - this.e * Math.sin(lat))), (this.alfa * this.e / 2));
+ u = 2 * (Math.atan(this.k * Math.pow(Math.tan(lat / 2 + this.s45), this.alfa) / gfi) - this.s45);
+ deltav = -delta_lon * this.alfa;
+ s = Math.asin(Math.cos(this.ad) * Math.sin(u) + Math.sin(this.ad) * Math.cos(u) * Math.cos(deltav));
+ d = Math.asin(Math.cos(u) * Math.sin(deltav) / Math.cos(s));
+ eps = this.n * d;
+ ro = this.ro0 * Math.pow(Math.tan(this.s0 / 2 + this.s45), this.n) / Math.pow(Math.tan(s / 2 + this.s45), this.n);
+ p.y = ro * Math.cos(eps) / 1;
+ p.x = ro * Math.sin(eps) / 1;
+
+ if (!this.czech) {
+ p.y *= -1;
+ p.x *= -1;
+ }
+ return (p);
+};
+
+/* calculate lat/lon from xy */
+exports.inverse = function(p) {
+ var u, deltav, s, d, eps, ro, fi1;
+ var ok;
+
+ /* Transformation */
+ /* revert y, x*/
+ var tmp = p.x;
+ p.x = p.y;
+ p.y = tmp;
+ if (!this.czech) {
+ p.y *= -1;
+ p.x *= -1;
+ }
+ ro = Math.sqrt(p.x * p.x + p.y * p.y);
+ eps = Math.atan2(p.y, p.x);
+ d = eps / Math.sin(this.s0);
+ s = 2 * (Math.atan(Math.pow(this.ro0 / ro, 1 / this.n) * Math.tan(this.s0 / 2 + this.s45)) - this.s45);
+ u = Math.asin(Math.cos(this.ad) * Math.sin(s) - Math.sin(this.ad) * Math.cos(s) * Math.cos(d));
+ deltav = Math.asin(Math.cos(s) * Math.sin(d) / Math.cos(u));
+ p.x = this.long0 - deltav / this.alfa;
+ fi1 = u;
+ ok = 0;
+ var iter = 0;
+ do {
+ p.y = 2 * (Math.atan(Math.pow(this.k, - 1 / this.alfa) * Math.pow(Math.tan(u / 2 + this.s45), 1 / this.alfa) * Math.pow((1 + this.e * Math.sin(fi1)) / (1 - this.e * Math.sin(fi1)), this.e / 2)) - this.s45);
+ if (Math.abs(fi1 - p.y) < 0.0000000001) {
+ ok = 1;
+ }
+ fi1 = p.y;
+ iter += 1;
+ } while (ok === 0 && iter < 15);
+ if (iter >= 15) {
+ return null;
+ }
+
+ return (p);
+};
+exports.names = ["Krovak", "krovak"];
diff --git a/lib/projections/laea.js b/lib/projections/laea.js
new file mode 100644
index 0000000..22bf1e7
--- /dev/null
+++ b/lib/projections/laea.js
@@ -0,0 +1,288 @@
+var HALF_PI = Math.PI/2;
+var FORTPI = Math.PI/4;
+var EPSLN = 1.0e-10;
+var qsfnz = require('../common/qsfnz');
+var adjust_lon = require('../common/adjust_lon');
+/*
+ reference
+ "New Equal-Area Map Projections for Noncircular Regions", John P. Snyder,
+ The American Cartographer, Vol 15, No. 4, October 1988, pp. 341-355.
+ */
+
+exports.S_POLE = 1;
+exports.N_POLE = 2;
+exports.EQUIT = 3;
+exports.OBLIQ = 4;
+
+
+/* Initialize the Lambert Azimuthal Equal Area projection
+ ------------------------------------------------------*/
+exports.init = function() {
+ var t = Math.abs(this.lat0);
+ if (Math.abs(t - HALF_PI) < EPSLN) {
+ this.mode = this.lat0 < 0 ? this.S_POLE : this.N_POLE;
+ }
+ else if (Math.abs(t) < EPSLN) {
+ this.mode = this.EQUIT;
+ }
+ else {
+ this.mode = this.OBLIQ;
+ }
+ if (this.es > 0) {
+ var sinphi;
+
+ this.qp = qsfnz(this.e, 1);
+ this.mmf = 0.5 / (1 - this.es);
+ this.apa = this.authset(this.es);
+ switch (this.mode) {
+ case this.N_POLE:
+ this.dd = 1;
+ break;
+ case this.S_POLE:
+ this.dd = 1;
+ break;
+ case this.EQUIT:
+ this.rq = Math.sqrt(0.5 * this.qp);
+ this.dd = 1 / this.rq;
+ this.xmf = 1;
+ this.ymf = 0.5 * this.qp;
+ break;
+ case this.OBLIQ:
+ this.rq = Math.sqrt(0.5 * this.qp);
+ sinphi = Math.sin(this.lat0);
+ this.sinb1 = qsfnz(this.e, sinphi) / this.qp;
+ this.cosb1 = Math.sqrt(1 - this.sinb1 * this.sinb1);
+ this.dd = Math.cos(this.lat0) / (Math.sqrt(1 - this.es * sinphi * sinphi) * this.rq * this.cosb1);
+ this.ymf = (this.xmf = this.rq) / this.dd;
+ this.xmf *= this.dd;
+ break;
+ }
+ }
+ else {
+ if (this.mode === this.OBLIQ) {
+ this.sinph0 = Math.sin(this.lat0);
+ this.cosph0 = Math.cos(this.lat0);
+ }
+ }
+};
+
+/* Lambert Azimuthal Equal Area forward equations--mapping lat,long to x,y
+ -----------------------------------------------------------------------*/
+exports.forward = function(p) {
+
+ /* Forward equations
+ -----------------*/
+ var x, y, coslam, sinlam, sinphi, q, sinb, cosb, b, cosphi;
+ var lam = p.x;
+ var phi = p.y;
+
+ lam = adjust_lon(lam - this.long0);
+
+ if (this.sphere) {
+ sinphi = Math.sin(phi);
+ cosphi = Math.cos(phi);
+ coslam = Math.cos(lam);
+ if (this.mode === this.OBLIQ || this.mode === this.EQUIT) {
+ y = (this.mode === this.EQUIT) ? 1 + cosphi * coslam : 1 + this.sinph0 * sinphi + this.cosph0 * cosphi * coslam;
+ if (y <= EPSLN) {
+ return null;
+ }
+ y = Math.sqrt(2 / y);
+ x = y * cosphi * Math.sin(lam);
+ y *= (this.mode === this.EQUIT) ? sinphi : this.cosph0 * sinphi - this.sinph0 * cosphi * coslam;
+ }
+ else if (this.mode === this.N_POLE || this.mode === this.S_POLE) {
+ if (this.mode === this.N_POLE) {
+ coslam = -coslam;
+ }
+ if (Math.abs(phi + this.phi0) < EPSLN) {
+ return null;
+ }
+ y = FORTPI - phi * 0.5;
+ y = 2 * ((this.mode === this.S_POLE) ? Math.cos(y) : Math.sin(y));
+ x = y * Math.sin(lam);
+ y *= coslam;
+ }
+ }
+ else {
+ sinb = 0;
+ cosb = 0;
+ b = 0;
+ coslam = Math.cos(lam);
+ sinlam = Math.sin(lam);
+ sinphi = Math.sin(phi);
+ q = qsfnz(this.e, sinphi);
+ if (this.mode === this.OBLIQ || this.mode === this.EQUIT) {
+ sinb = q / this.qp;
+ cosb = Math.sqrt(1 - sinb * sinb);
+ }
+ switch (this.mode) {
+ case this.OBLIQ:
+ b = 1 + this.sinb1 * sinb + this.cosb1 * cosb * coslam;
+ break;
+ case this.EQUIT:
+ b = 1 + cosb * coslam;
+ break;
+ case this.N_POLE:
+ b = HALF_PI + phi;
+ q = this.qp - q;
+ break;
+ case this.S_POLE:
+ b = phi - HALF_PI;
+ q = this.qp + q;
+ break;
+ }
+ if (Math.abs(b) < EPSLN) {
+ return null;
+ }
+ switch (this.mode) {
+ case this.OBLIQ:
+ case this.EQUIT:
+ b = Math.sqrt(2 / b);
+ if (this.mode === this.OBLIQ) {
+ y = this.ymf * b * (this.cosb1 * sinb - this.sinb1 * cosb * coslam);
+ }
+ else {
+ y = (b = Math.sqrt(2 / (1 + cosb * coslam))) * sinb * this.ymf;
+ }
+ x = this.xmf * b * cosb * sinlam;
+ break;
+ case this.N_POLE:
+ case this.S_POLE:
+ if (q >= 0) {
+ x = (b = Math.sqrt(q)) * sinlam;
+ y = coslam * ((this.mode === this.S_POLE) ? b : -b);
+ }
+ else {
+ x = y = 0;
+ }
+ break;
+ }
+ }
+
+ p.x = this.a * x + this.x0;
+ p.y = this.a * y + this.y0;
+ return p;
+};
+
+/* Inverse equations
+ -----------------*/
+exports.inverse = function(p) {
+ p.x -= this.x0;
+ p.y -= this.y0;
+ var x = p.x / this.a;
+ var y = p.y / this.a;
+ var lam, phi, cCe, sCe, q, rho, ab;
+
+ if (this.sphere) {
+ var cosz = 0,
+ rh, sinz = 0;
+
+ rh = Math.sqrt(x * x + y * y);
+ phi = rh * 0.5;
+ if (phi > 1) {
+ return null;
+ }
+ phi = 2 * Math.asin(phi);
+ if (this.mode === this.OBLIQ || this.mode === this.EQUIT) {
+ sinz = Math.sin(phi);
+ cosz = Math.cos(phi);
+ }
+ switch (this.mode) {
+ case this.EQUIT:
+ phi = (Math.abs(rh) <= EPSLN) ? 0 : Math.asin(y * sinz / rh);
+ x *= sinz;
+ y = cosz * rh;
+ break;
+ case this.OBLIQ:
+ phi = (Math.abs(rh) <= EPSLN) ? this.phi0 : Math.asin(cosz * this.sinph0 + y * sinz * this.cosph0 / rh);
+ x *= sinz * this.cosph0;
+ y = (cosz - Math.sin(phi) * this.sinph0) * rh;
+ break;
+ case this.N_POLE:
+ y = -y;
+ phi = HALF_PI - phi;
+ break;
+ case this.S_POLE:
+ phi -= HALF_PI;
+ break;
+ }
+ lam = (y === 0 && (this.mode === this.EQUIT || this.mode === this.OBLIQ)) ? 0 : Math.atan2(x, y);
+ }
+ else {
+ ab = 0;
+ if (this.mode === this.OBLIQ || this.mode === this.EQUIT) {
+ x /= this.dd;
+ y *= this.dd;
+ rho = Math.sqrt(x * x + y * y);
+ if (rho < EPSLN) {
+ p.x = 0;
+ p.y = this.phi0;
+ return p;
+ }
+ sCe = 2 * Math.asin(0.5 * rho / this.rq);
+ cCe = Math.cos(sCe);
+ x *= (sCe = Math.sin(sCe));
+ if (this.mode === this.OBLIQ) {
+ ab = cCe * this.sinb1 + y * sCe * this.cosb1 / rho;
+ q = this.qp * ab;
+ y = rho * this.cosb1 * cCe - y * this.sinb1 * sCe;
+ }
+ else {
+ ab = y * sCe / rho;
+ q = this.qp * ab;
+ y = rho * cCe;
+ }
+ }
+ else if (this.mode === this.N_POLE || this.mode === this.S_POLE) {
+ if (this.mode === this.N_POLE) {
+ y = -y;
+ }
+ q = (x * x + y * y);
+ if (!q) {
+ p.x = 0;
+ p.y = this.phi0;
+ return p;
+ }
+ ab = 1 - q / this.qp;
+ if (this.mode === this.S_POLE) {
+ ab = -ab;
+ }
+ }
+ lam = Math.atan2(x, y);
+ phi = this.authlat(Math.asin(ab), this.apa);
+ }
+
+
+ p.x = adjust_lon(this.long0 + lam);
+ p.y = phi;
+ return p;
+};
+
+/* determine latitude from authalic latitude */
+exports.P00 = 0.33333333333333333333;
+exports.P01 = 0.17222222222222222222;
+exports.P02 = 0.10257936507936507936;
+exports.P10 = 0.06388888888888888888;
+exports.P11 = 0.06640211640211640211;
+exports.P20 = 0.01641501294219154443;
+
+exports.authset = function(es) {
+ var t;
+ var APA = [];
+ APA[0] = es * this.P00;
+ t = es * es;
+ APA[0] += t * this.P01;
+ APA[1] = t * this.P10;
+ t *= es;
+ APA[0] += t * this.P02;
+ APA[1] += t * this.P11;
+ APA[2] = t * this.P20;
+ return APA;
+};
+
+exports.authlat = function(beta, APA) {
+ var t = beta + beta;
+ return (beta + APA[0] * Math.sin(t) + APA[1] * Math.sin(t + t) + APA[2] * Math.sin(t + t + t));
+};
+exports.names = ["Lambert Azimuthal Equal Area", "Lambert_Azimuthal_Equal_Area", "laea"];
diff --git a/lib/projections/lcc.js b/lib/projections/lcc.js
new file mode 100644
index 0000000..4fb5cfc
--- /dev/null
+++ b/lib/projections/lcc.js
@@ -0,0 +1,135 @@
+var EPSLN = 1.0e-10;
+var msfnz = require('../common/msfnz');
+var tsfnz = require('../common/tsfnz');
+var HALF_PI = Math.PI/2;
+var sign = require('../common/sign');
+var adjust_lon = require('../common/adjust_lon');
+var phi2z = require('../common/phi2z');
+exports.init = function() {
+
+ // array of: r_maj,r_min,lat1,lat2,c_lon,c_lat,false_east,false_north
+ //double c_lat; /* center latitude */
+ //double c_lon; /* center longitude */
+ //double lat1; /* first standard parallel */
+ //double lat2; /* second standard parallel */
+ //double r_maj; /* major axis */
+ //double r_min; /* minor axis */
+ //double false_east; /* x offset in meters */
+ //double false_north; /* y offset in meters */
+
+ if (!this.lat2) {
+ this.lat2 = this.lat1;
+ } //if lat2 is not defined
+ if (!this.k0) {
+ this.k0 = 1;
+ }
+ this.x0 = this.x0 || 0;
+ this.y0 = this.y0 || 0;
+ // Standard Parallels cannot be equal and on opposite sides of the equator
+ if (Math.abs(this.lat1 + this.lat2) < EPSLN) {
+ return;
+ }
+
+ var temp = this.b / this.a;
+ this.e = Math.sqrt(1 - temp * temp);
+
+ var sin1 = Math.sin(this.lat1);
+ var cos1 = Math.cos(this.lat1);
+ var ms1 = msfnz(this.e, sin1, cos1);
+ var ts1 = tsfnz(this.e, this.lat1, sin1);
+
+ var sin2 = Math.sin(this.lat2);
+ var cos2 = Math.cos(this.lat2);
+ var ms2 = msfnz(this.e, sin2, cos2);
+ var ts2 = tsfnz(this.e, this.lat2, sin2);
+
+ var ts0 = tsfnz(this.e, this.lat0, Math.sin(this.lat0));
+
+ if (Math.abs(this.lat1 - this.lat2) > EPSLN) {
+ this.ns = Math.log(ms1 / ms2) / Math.log(ts1 / ts2);
+ }
+ else {
+ this.ns = sin1;
+ }
+ if (isNaN(this.ns)) {
+ this.ns = sin1;
+ }
+ this.f0 = ms1 / (this.ns * Math.pow(ts1, this.ns));
+ this.rh = this.a * this.f0 * Math.pow(ts0, this.ns);
+ if (!this.title) {
+ this.title = "Lambert Conformal Conic";
+ }
+};
+
+
+// Lambert Conformal conic forward equations--mapping lat,long to x,y
+// -----------------------------------------------------------------
+exports.forward = function(p) {
+
+ var lon = p.x;
+ var lat = p.y;
+
+ // singular cases :
+ if (Math.abs(2 * Math.abs(lat) - Math.PI) <= EPSLN) {
+ lat = sign(lat) * (HALF_PI - 2 * EPSLN);
+ }
+
+ var con = Math.abs(Math.abs(lat) - HALF_PI);
+ var ts, rh1;
+ if (con > EPSLN) {
+ ts = tsfnz(this.e, lat, Math.sin(lat));
+ rh1 = this.a * this.f0 * Math.pow(ts, this.ns);
+ }
+ else {
+ con = lat * this.ns;
+ if (con <= 0) {
+ return null;
+ }
+ rh1 = 0;
+ }
+ var theta = this.ns * adjust_lon(lon - this.long0);
+ p.x = this.k0 * (rh1 * Math.sin(theta)) + this.x0;
+ p.y = this.k0 * (this.rh - rh1 * Math.cos(theta)) + this.y0;
+
+ return p;
+};
+
+// Lambert Conformal Conic inverse equations--mapping x,y to lat/long
+// -----------------------------------------------------------------
+exports.inverse = function(p) {
+
+ var rh1, con, ts;
+ var lat, lon;
+ var x = (p.x - this.x0) / this.k0;
+ var y = (this.rh - (p.y - this.y0) / this.k0);
+ if (this.ns > 0) {
+ rh1 = Math.sqrt(x * x + y * y);
+ con = 1;
+ }
+ else {
+ rh1 = -Math.sqrt(x * x + y * y);
+ con = -1;
+ }
+ var theta = 0;
+ if (rh1 !== 0) {
+ theta = Math.atan2((con * x), (con * y));
+ }
+ if ((rh1 !== 0) || (this.ns > 0)) {
+ con = 1 / this.ns;
+ ts = Math.pow((rh1 / (this.a * this.f0)), con);
+ lat = phi2z(this.e, ts);
+ if (lat === -9999) {
+ return null;
+ }
+ }
+ else {
+ lat = -HALF_PI;
+ }
+ lon = adjust_lon(theta / this.ns + this.long0);
+
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+
+exports.names = ["Lambert Tangential Conformal Conic Projection", "Lambert_Conformal_Conic", "Lambert_Conformal_Conic_2SP", "lcc"];
diff --git a/lib/projections/longlat.js b/lib/projections/longlat.js
new file mode 100644
index 0000000..08fe077
--- /dev/null
+++ b/lib/projections/longlat.js
@@ -0,0 +1,10 @@
+exports.init = function() {
+ //no-op for longlat
+};
+
+function identity(pt) {
+ return pt;
+}
+exports.forward = identity;
+exports.inverse = identity;
+exports.names = ["longlat", "identity"];
diff --git a/lib/projections/merc.js b/lib/projections/merc.js
new file mode 100644
index 0000000..e17d62a
--- /dev/null
+++ b/lib/projections/merc.js
@@ -0,0 +1,97 @@
+var msfnz = require('../common/msfnz');
+var HALF_PI = Math.PI/2;
+var EPSLN = 1.0e-10;
+var R2D = 57.29577951308232088;
+var adjust_lon = require('../common/adjust_lon');
+var FORTPI = Math.PI/4;
+var tsfnz = require('../common/tsfnz');
+var phi2z = require('../common/phi2z');
+exports.init = function() {
+ var con = this.b / this.a;
+ this.es = 1 - con * con;
+ if(!('x0' in this)){
+ this.x0 = 0;
+ }
+ if(!('y0' in this)){
+ this.y0 = 0;
+ }
+ this.e = Math.sqrt(this.es);
+ if (this.lat_ts) {
+ if (this.sphere) {
+ this.k0 = Math.cos(this.lat_ts);
+ }
+ else {
+ this.k0 = msfnz(this.e, Math.sin(this.lat_ts), Math.cos(this.lat_ts));
+ }
+ }
+ else {
+ if (!this.k0) {
+ if (this.k) {
+ this.k0 = this.k;
+ }
+ else {
+ this.k0 = 1;
+ }
+ }
+ }
+};
+
+/* Mercator forward equations--mapping lat,long to x,y
+ --------------------------------------------------*/
+
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+ // convert to radians
+ if (lat * R2D > 90 && lat * R2D < -90 && lon * R2D > 180 && lon * R2D < -180) {
+ return null;
+ }
+
+ var x, y;
+ if (Math.abs(Math.abs(lat) - HALF_PI) <= EPSLN) {
+ return null;
+ }
+ else {
+ if (this.sphere) {
+ x = this.x0 + this.a * this.k0 * adjust_lon(lon - this.long0);
+ y = this.y0 + this.a * this.k0 * Math.log(Math.tan(FORTPI + 0.5 * lat));
+ }
+ else {
+ var sinphi = Math.sin(lat);
+ var ts = tsfnz(this.e, lat, sinphi);
+ x = this.x0 + this.a * this.k0 * adjust_lon(lon - this.long0);
+ y = this.y0 - this.a * this.k0 * Math.log(ts);
+ }
+ p.x = x;
+ p.y = y;
+ return p;
+ }
+};
+
+
+/* Mercator inverse equations--mapping x,y to lat/long
+ --------------------------------------------------*/
+exports.inverse = function(p) {
+
+ var x = p.x - this.x0;
+ var y = p.y - this.y0;
+ var lon, lat;
+
+ if (this.sphere) {
+ lat = HALF_PI - 2 * Math.atan(Math.exp(-y / (this.a * this.k0)));
+ }
+ else {
+ var ts = Math.exp(-y / (this.a * this.k0));
+ lat = phi2z(this.e, ts);
+ if (lat === -9999) {
+ return null;
+ }
+ }
+ lon = adjust_lon(this.long0 + x / (this.a * this.k0));
+
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+
+exports.names = ["Mercator", "Popular Visualisation Pseudo Mercator", "Mercator_1SP", "Mercator_Auxiliary_Sphere", "merc"];
diff --git a/lib/projections/mill.js b/lib/projections/mill.js
new file mode 100644
index 0000000..5858d36
--- /dev/null
+++ b/lib/projections/mill.js
@@ -0,0 +1,45 @@
+var adjust_lon = require('../common/adjust_lon');
+/*
+ reference
+ "New Equal-Area Map Projections for Noncircular Regions", John P. Snyder,
+ The American Cartographer, Vol 15, No. 4, October 1988, pp. 341-355.
+ */
+
+
+/* Initialize the Miller Cylindrical projection
+ -------------------------------------------*/
+exports.init = function() {
+ //no-op
+};
+
+
+/* Miller Cylindrical forward equations--mapping lat,long to x,y
+ ------------------------------------------------------------*/
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+ /* Forward equations
+ -----------------*/
+ var dlon = adjust_lon(lon - this.long0);
+ var x = this.x0 + this.a * dlon;
+ var y = this.y0 + this.a * Math.log(Math.tan((Math.PI / 4) + (lat / 2.5))) * 1.25;
+
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+/* Miller Cylindrical inverse equations--mapping x,y to lat/long
+ ------------------------------------------------------------*/
+exports.inverse = function(p) {
+ p.x -= this.x0;
+ p.y -= this.y0;
+
+ var lon = adjust_lon(this.long0 + p.x / this.a);
+ var lat = 2.5 * (Math.atan(Math.exp(0.8 * p.y / this.a)) - Math.PI / 4);
+
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["Miller_Cylindrical", "mill"];
diff --git a/lib/projections/moll.js b/lib/projections/moll.js
new file mode 100644
index 0000000..48fbfd7
--- /dev/null
+++ b/lib/projections/moll.js
@@ -0,0 +1,77 @@
+var adjust_lon = require('../common/adjust_lon');
+var EPSLN = 1.0e-10;
+exports.init = function() {};
+
+/* Mollweide forward equations--mapping lat,long to x,y
+ ----------------------------------------------------*/
+exports.forward = function(p) {
+
+ /* Forward equations
+ -----------------*/
+ var lon = p.x;
+ var lat = p.y;
+
+ var delta_lon = adjust_lon(lon - this.long0);
+ var theta = lat;
+ var con = Math.PI * Math.sin(lat);
+
+ /* Iterate using the Newton-Raphson method to find theta
+ -----------------------------------------------------*/
+ for (var i = 0; true; i++) {
+ var delta_theta = -(theta + Math.sin(theta) - con) / (1 + Math.cos(theta));
+ theta += delta_theta;
+ if (Math.abs(delta_theta) < EPSLN) {
+ break;
+ }
+ }
+ theta /= 2;
+
+ /* If the latitude is 90 deg, force the x coordinate to be "0 + false easting"
+ this is done here because of precision problems with "cos(theta)"
+ --------------------------------------------------------------------------*/
+ if (Math.PI / 2 - Math.abs(lat) < EPSLN) {
+ delta_lon = 0;
+ }
+ var x = 0.900316316158 * this.a * delta_lon * Math.cos(theta) + this.x0;
+ var y = 1.4142135623731 * this.a * Math.sin(theta) + this.y0;
+
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+exports.inverse = function(p) {
+ var theta;
+ var arg;
+
+ /* Inverse equations
+ -----------------*/
+ p.x -= this.x0;
+ p.y -= this.y0;
+ arg = p.y / (1.4142135623731 * this.a);
+
+ /* Because of division by zero problems, 'arg' can not be 1. Therefore
+ a number very close to one is used instead.
+ -------------------------------------------------------------------*/
+ if (Math.abs(arg) > 0.999999999999) {
+ arg = 0.999999999999;
+ }
+ theta = Math.asin(arg);
+ var lon = adjust_lon(this.long0 + (p.x / (0.900316316158 * this.a * Math.cos(theta))));
+ if (lon < (-Math.PI)) {
+ lon = -Math.PI;
+ }
+ if (lon > Math.PI) {
+ lon = Math.PI;
+ }
+ arg = (2 * theta + Math.sin(2 * theta)) / Math.PI;
+ if (Math.abs(arg) > 1) {
+ arg = 1;
+ }
+ var lat = Math.asin(arg);
+
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["Mollweide", "moll"];
diff --git a/lib/projections/nzmg.js b/lib/projections/nzmg.js
new file mode 100644
index 0000000..58597bf
--- /dev/null
+++ b/lib/projections/nzmg.js
@@ -0,0 +1,219 @@
+var SEC_TO_RAD = 4.84813681109535993589914102357e-6;
+/*
+ reference
+ Department of Land and Survey Technical Circular 1973/32
+ http://www.linz.govt.nz/docs/miscellaneous/nz-map-definition.pdf
+ OSG Technical Report 4.1
+ http://www.linz.govt.nz/docs/miscellaneous/nzmg.pdf
+ */
+
+/**
+ * iterations: Number of iterations to refine inverse transform.
+ * 0 -> km accuracy
+ * 1 -> m accuracy -- suitable for most mapping applications
+ * 2 -> mm accuracy
+ */
+exports.iterations = 1;
+
+exports.init = function() {
+ this.A = [];
+ this.A[1] = 0.6399175073;
+ this.A[2] = -0.1358797613;
+ this.A[3] = 0.063294409;
+ this.A[4] = -0.02526853;
+ this.A[5] = 0.0117879;
+ this.A[6] = -0.0055161;
+ this.A[7] = 0.0026906;
+ this.A[8] = -0.001333;
+ this.A[9] = 0.00067;
+ this.A[10] = -0.00034;
+
+ this.B_re = [];
+ this.B_im = [];
+ this.B_re[1] = 0.7557853228;
+ this.B_im[1] = 0;
+ this.B_re[2] = 0.249204646;
+ this.B_im[2] = 0.003371507;
+ this.B_re[3] = -0.001541739;
+ this.B_im[3] = 0.041058560;
+ this.B_re[4] = -0.10162907;
+ this.B_im[4] = 0.01727609;
+ this.B_re[5] = -0.26623489;
+ this.B_im[5] = -0.36249218;
+ this.B_re[6] = -0.6870983;
+ this.B_im[6] = -1.1651967;
+
+ this.C_re = [];
+ this.C_im = [];
+ this.C_re[1] = 1.3231270439;
+ this.C_im[1] = 0;
+ this.C_re[2] = -0.577245789;
+ this.C_im[2] = -0.007809598;
+ this.C_re[3] = 0.508307513;
+ this.C_im[3] = -0.112208952;
+ this.C_re[4] = -0.15094762;
+ this.C_im[4] = 0.18200602;
+ this.C_re[5] = 1.01418179;
+ this.C_im[5] = 1.64497696;
+ this.C_re[6] = 1.9660549;
+ this.C_im[6] = 2.5127645;
+
+ this.D = [];
+ this.D[1] = 1.5627014243;
+ this.D[2] = 0.5185406398;
+ this.D[3] = -0.03333098;
+ this.D[4] = -0.1052906;
+ this.D[5] = -0.0368594;
+ this.D[6] = 0.007317;
+ this.D[7] = 0.01220;
+ this.D[8] = 0.00394;
+ this.D[9] = -0.0013;
+};
+
+/**
+ New Zealand Map Grid Forward - long/lat to x/y
+ long/lat in radians
+ */
+exports.forward = function(p) {
+ var n;
+ var lon = p.x;
+ var lat = p.y;
+
+ var delta_lat = lat - this.lat0;
+ var delta_lon = lon - this.long0;
+
+ // 1. Calculate d_phi and d_psi ... // and d_lambda
+ // For this algorithm, delta_latitude is in seconds of arc x 10-5, so we need to scale to those units. Longitude is radians.
+ var d_phi = delta_lat / SEC_TO_RAD * 1E-5;
+ var d_lambda = delta_lon;
+ var d_phi_n = 1; // d_phi^0
+
+ var d_psi = 0;
+ for (n = 1; n <= 10; n++) {
+ d_phi_n = d_phi_n * d_phi;
+ d_psi = d_psi + this.A[n] * d_phi_n;
+ }
+
+ // 2. Calculate theta
+ var th_re = d_psi;
+ var th_im = d_lambda;
+
+ // 3. Calculate z
+ var th_n_re = 1;
+ var th_n_im = 0; // theta^0
+ var th_n_re1;
+ var th_n_im1;
+
+ var z_re = 0;
+ var z_im = 0;
+ for (n = 1; n <= 6; n++) {
+ th_n_re1 = th_n_re * th_re - th_n_im * th_im;
+ th_n_im1 = th_n_im * th_re + th_n_re * th_im;
+ th_n_re = th_n_re1;
+ th_n_im = th_n_im1;
+ z_re = z_re + this.B_re[n] * th_n_re - this.B_im[n] * th_n_im;
+ z_im = z_im + this.B_im[n] * th_n_re + this.B_re[n] * th_n_im;
+ }
+
+ // 4. Calculate easting and northing
+ p.x = (z_im * this.a) + this.x0;
+ p.y = (z_re * this.a) + this.y0;
+
+ return p;
+};
+
+
+/**
+ New Zealand Map Grid Inverse - x/y to long/lat
+ */
+exports.inverse = function(p) {
+ var n;
+ var x = p.x;
+ var y = p.y;
+
+ var delta_x = x - this.x0;
+ var delta_y = y - this.y0;
+
+ // 1. Calculate z
+ var z_re = delta_y / this.a;
+ var z_im = delta_x / this.a;
+
+ // 2a. Calculate theta - first approximation gives km accuracy
+ var z_n_re = 1;
+ var z_n_im = 0; // z^0
+ var z_n_re1;
+ var z_n_im1;
+
+ var th_re = 0;
+ var th_im = 0;
+ for (n = 1; n <= 6; n++) {
+ z_n_re1 = z_n_re * z_re - z_n_im * z_im;
+ z_n_im1 = z_n_im * z_re + z_n_re * z_im;
+ z_n_re = z_n_re1;
+ z_n_im = z_n_im1;
+ th_re = th_re + this.C_re[n] * z_n_re - this.C_im[n] * z_n_im;
+ th_im = th_im + this.C_im[n] * z_n_re + this.C_re[n] * z_n_im;
+ }
+
+ // 2b. Iterate to refine the accuracy of the calculation
+ // 0 iterations gives km accuracy
+ // 1 iteration gives m accuracy -- good enough for most mapping applications
+ // 2 iterations bives mm accuracy
+ for (var i = 0; i < this.iterations; i++) {
+ var th_n_re = th_re;
+ var th_n_im = th_im;
+ var th_n_re1;
+ var th_n_im1;
+
+ var num_re = z_re;
+ var num_im = z_im;
+ for (n = 2; n <= 6; n++) {
+ th_n_re1 = th_n_re * th_re - th_n_im * th_im;
+ th_n_im1 = th_n_im * th_re + th_n_re * th_im;
+ th_n_re = th_n_re1;
+ th_n_im = th_n_im1;
+ num_re = num_re + (n - 1) * (this.B_re[n] * th_n_re - this.B_im[n] * th_n_im);
+ num_im = num_im + (n - 1) * (this.B_im[n] * th_n_re + this.B_re[n] * th_n_im);
+ }
+
+ th_n_re = 1;
+ th_n_im = 0;
+ var den_re = this.B_re[1];
+ var den_im = this.B_im[1];
+ for (n = 2; n <= 6; n++) {
+ th_n_re1 = th_n_re * th_re - th_n_im * th_im;
+ th_n_im1 = th_n_im * th_re + th_n_re * th_im;
+ th_n_re = th_n_re1;
+ th_n_im = th_n_im1;
+ den_re = den_re + n * (this.B_re[n] * th_n_re - this.B_im[n] * th_n_im);
+ den_im = den_im + n * (this.B_im[n] * th_n_re + this.B_re[n] * th_n_im);
+ }
+
+ // Complex division
+ var den2 = den_re * den_re + den_im * den_im;
+ th_re = (num_re * den_re + num_im * den_im) / den2;
+ th_im = (num_im * den_re - num_re * den_im) / den2;
+ }
+
+ // 3. Calculate d_phi ... // and d_lambda
+ var d_psi = th_re;
+ var d_lambda = th_im;
+ var d_psi_n = 1; // d_psi^0
+
+ var d_phi = 0;
+ for (n = 1; n <= 9; n++) {
+ d_psi_n = d_psi_n * d_psi;
+ d_phi = d_phi + this.D[n] * d_psi_n;
+ }
+
+ // 4. Calculate latitude and longitude
+ // d_phi is calcuated in second of arc * 10^-5, so we need to scale back to radians. d_lambda is in radians.
+ var lat = this.lat0 + (d_phi * SEC_TO_RAD * 1E5);
+ var lon = this.long0 + d_lambda;
+
+ p.x = lon;
+ p.y = lat;
+
+ return p;
+};
+exports.names = ["New_Zealand_Map_Grid", "nzmg"];
\ No newline at end of file
diff --git a/lib/projections/omerc.js b/lib/projections/omerc.js
new file mode 100644
index 0000000..cdeb70e
--- /dev/null
+++ b/lib/projections/omerc.js
@@ -0,0 +1,168 @@
+var tsfnz = require('../common/tsfnz');
+var adjust_lon = require('../common/adjust_lon');
+var phi2z = require('../common/phi2z');
+var HALF_PI = Math.PI/2;
+var FORTPI = Math.PI/4;
+var EPSLN = 1.0e-10;
+
+/* Initialize the Oblique Mercator projection
+ ------------------------------------------*/
+exports.init = function() {
+ this.no_off = this.no_off || false;
+ this.no_rot = this.no_rot || false;
+
+ if (isNaN(this.k0)) {
+ this.k0 = 1;
+ }
+ var sinlat = Math.sin(this.lat0);
+ var coslat = Math.cos(this.lat0);
+ var con = this.e * sinlat;
+
+ this.bl = Math.sqrt(1 + this.es / (1 - this.es) * Math.pow(coslat, 4));
+ this.al = this.a * this.bl * this.k0 * Math.sqrt(1 - this.es) / (1 - con * con);
+ var t0 = tsfnz(this.e, this.lat0, sinlat);
+ var dl = this.bl / coslat * Math.sqrt((1 - this.es) / (1 - con * con));
+ if (dl * dl < 1) {
+ dl = 1;
+ }
+ var fl;
+ var gl;
+ if (!isNaN(this.longc)) {
+ //Central point and azimuth method
+
+ if (this.lat0 >= 0) {
+ fl = dl + Math.sqrt(dl * dl - 1);
+ }
+ else {
+ fl = dl - Math.sqrt(dl * dl - 1);
+ }
+ this.el = fl * Math.pow(t0, this.bl);
+ gl = 0.5 * (fl - 1 / fl);
+ this.gamma0 = Math.asin(Math.sin(this.alpha) / dl);
+ this.long0 = this.longc - Math.asin(gl * Math.tan(this.gamma0)) / this.bl;
+
+ }
+ else {
+ //2 points method
+ var t1 = tsfnz(this.e, this.lat1, Math.sin(this.lat1));
+ var t2 = tsfnz(this.e, this.lat2, Math.sin(this.lat2));
+ if (this.lat0 >= 0) {
+ this.el = (dl + Math.sqrt(dl * dl - 1)) * Math.pow(t0, this.bl);
+ }
+ else {
+ this.el = (dl - Math.sqrt(dl * dl - 1)) * Math.pow(t0, this.bl);
+ }
+ var hl = Math.pow(t1, this.bl);
+ var ll = Math.pow(t2, this.bl);
+ fl = this.el / hl;
+ gl = 0.5 * (fl - 1 / fl);
+ var jl = (this.el * this.el - ll * hl) / (this.el * this.el + ll * hl);
+ var pl = (ll - hl) / (ll + hl);
+ var dlon12 = adjust_lon(this.long1 - this.long2);
+ this.long0 = 0.5 * (this.long1 + this.long2) - Math.atan(jl * Math.tan(0.5 * this.bl * (dlon12)) / pl) / this.bl;
+ this.long0 = adjust_lon(this.long0);
+ var dlon10 = adjust_lon(this.long1 - this.long0);
+ this.gamma0 = Math.atan(Math.sin(this.bl * (dlon10)) / gl);
+ this.alpha = Math.asin(dl * Math.sin(this.gamma0));
+ }
+
+ if (this.no_off) {
+ this.uc = 0;
+ }
+ else {
+ if (this.lat0 >= 0) {
+ this.uc = this.al / this.bl * Math.atan2(Math.sqrt(dl * dl - 1), Math.cos(this.alpha));
+ }
+ else {
+ this.uc = -1 * this.al / this.bl * Math.atan2(Math.sqrt(dl * dl - 1), Math.cos(this.alpha));
+ }
+ }
+
+};
+
+
+/* Oblique Mercator forward equations--mapping lat,long to x,y
+ ----------------------------------------------------------*/
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+ var dlon = adjust_lon(lon - this.long0);
+ var us, vs;
+ var con;
+ if (Math.abs(Math.abs(lat) - HALF_PI) <= EPSLN) {
+ if (lat > 0) {
+ con = -1;
+ }
+ else {
+ con = 1;
+ }
+ vs = this.al / this.bl * Math.log(Math.tan(FORTPI + con * this.gamma0 * 0.5));
+ us = -1 * con * HALF_PI * this.al / this.bl;
+ }
+ else {
+ var t = tsfnz(this.e, lat, Math.sin(lat));
+ var ql = this.el / Math.pow(t, this.bl);
+ var sl = 0.5 * (ql - 1 / ql);
+ var tl = 0.5 * (ql + 1 / ql);
+ var vl = Math.sin(this.bl * (dlon));
+ var ul = (sl * Math.sin(this.gamma0) - vl * Math.cos(this.gamma0)) / tl;
+ if (Math.abs(Math.abs(ul) - 1) <= EPSLN) {
+ vs = Number.POSITIVE_INFINITY;
+ }
+ else {
+ vs = 0.5 * this.al * Math.log((1 - ul) / (1 + ul)) / this.bl;
+ }
+ if (Math.abs(Math.cos(this.bl * (dlon))) <= EPSLN) {
+ us = this.al * this.bl * (dlon);
+ }
+ else {
+ us = this.al * Math.atan2(sl * Math.cos(this.gamma0) + vl * Math.sin(this.gamma0), Math.cos(this.bl * dlon)) / this.bl;
+ }
+ }
+
+ if (this.no_rot) {
+ p.x = this.x0 + us;
+ p.y = this.y0 + vs;
+ }
+ else {
+
+ us -= this.uc;
+ p.x = this.x0 + vs * Math.cos(this.alpha) + us * Math.sin(this.alpha);
+ p.y = this.y0 + us * Math.cos(this.alpha) - vs * Math.sin(this.alpha);
+ }
+ return p;
+};
+
+exports.inverse = function(p) {
+ var us, vs;
+ if (this.no_rot) {
+ vs = p.y - this.y0;
+ us = p.x - this.x0;
+ }
+ else {
+ vs = (p.x - this.x0) * Math.cos(this.alpha) - (p.y - this.y0) * Math.sin(this.alpha);
+ us = (p.y - this.y0) * Math.cos(this.alpha) + (p.x - this.x0) * Math.sin(this.alpha);
+ us += this.uc;
+ }
+ var qp = Math.exp(-1 * this.bl * vs / this.al);
+ var sp = 0.5 * (qp - 1 / qp);
+ var tp = 0.5 * (qp + 1 / qp);
+ var vp = Math.sin(this.bl * us / this.al);
+ var up = (vp * Math.cos(this.gamma0) + sp * Math.sin(this.gamma0)) / tp;
+ var ts = Math.pow(this.el / Math.sqrt((1 + up) / (1 - up)), 1 / this.bl);
+ if (Math.abs(up - 1) < EPSLN) {
+ p.x = this.long0;
+ p.y = HALF_PI;
+ }
+ else if (Math.abs(up + 1) < EPSLN) {
+ p.x = this.long0;
+ p.y = -1 * HALF_PI;
+ }
+ else {
+ p.y = phi2z(this.e, ts);
+ p.x = adjust_lon(this.long0 - Math.atan2(sp * Math.cos(this.gamma0) - vp * Math.sin(this.gamma0), Math.cos(this.bl * us / this.al)) / this.bl);
+ }
+ return p;
+};
+
+exports.names = ["Hotine_Oblique_Mercator", "Hotine Oblique Mercator", "Hotine_Oblique_Mercator_Azimuth_Natural_Origin", "Hotine_Oblique_Mercator_Azimuth_Center", "omerc"];
\ No newline at end of file
diff --git a/lib/projections/ortho.js b/lib/projections/ortho.js
new file mode 100644
index 0000000..99f6c65
--- /dev/null
+++ b/lib/projections/ortho.js
@@ -0,0 +1,86 @@
+var adjust_lon = require('../common/adjust_lon');
+var EPSLN = 1.0e-10;
+var asinz = require('../common/asinz');
+var HALF_PI = Math.PI/2;
+exports.init = function() {
+ //double temp; /* temporary variable */
+
+ /* Place parameters in static storage for common use
+ -------------------------------------------------*/
+ this.sin_p14 = Math.sin(this.lat0);
+ this.cos_p14 = Math.cos(this.lat0);
+};
+
+
+/* Orthographic forward equations--mapping lat,long to x,y
+ ---------------------------------------------------*/
+exports.forward = function(p) {
+ var sinphi, cosphi; /* sin and cos value */
+ var dlon; /* delta longitude value */
+ var coslon; /* cos of longitude */
+ var ksp; /* scale factor */
+ var g, x, y;
+ var lon = p.x;
+ var lat = p.y;
+ /* Forward equations
+ -----------------*/
+ dlon = adjust_lon(lon - this.long0);
+
+ sinphi = Math.sin(lat);
+ cosphi = Math.cos(lat);
+
+ coslon = Math.cos(dlon);
+ g = this.sin_p14 * sinphi + this.cos_p14 * cosphi * coslon;
+ ksp = 1;
+ if ((g > 0) || (Math.abs(g) <= EPSLN)) {
+ x = this.a * ksp * cosphi * Math.sin(dlon);
+ y = this.y0 + this.a * ksp * (this.cos_p14 * sinphi - this.sin_p14 * cosphi * coslon);
+ }
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+
+exports.inverse = function(p) {
+ var rh; /* height above ellipsoid */
+ var z; /* angle */
+ var sinz, cosz; /* sin of z and cos of z */
+ var con;
+ var lon, lat;
+ /* Inverse equations
+ -----------------*/
+ p.x -= this.x0;
+ p.y -= this.y0;
+ rh = Math.sqrt(p.x * p.x + p.y * p.y);
+ z = asinz(rh / this.a);
+
+ sinz = Math.sin(z);
+ cosz = Math.cos(z);
+
+ lon = this.long0;
+ if (Math.abs(rh) <= EPSLN) {
+ lat = this.lat0;
+ p.x = lon;
+ p.y = lat;
+ return p;
+ }
+ lat = asinz(cosz * this.sin_p14 + (p.y * sinz * this.cos_p14) / rh);
+ con = Math.abs(this.lat0) - HALF_PI;
+ if (Math.abs(con) <= EPSLN) {
+ if (this.lat0 >= 0) {
+ lon = adjust_lon(this.long0 + Math.atan2(p.x, - p.y));
+ }
+ else {
+ lon = adjust_lon(this.long0 - Math.atan2(-p.x, p.y));
+ }
+ p.x = lon;
+ p.y = lat;
+ return p;
+ }
+ lon = adjust_lon(this.long0 + Math.atan2((p.x * sinz), rh * this.cos_p14 * cosz - p.y * this.sin_p14 * sinz));
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["ortho"];
diff --git a/lib/projections/poly.js b/lib/projections/poly.js
new file mode 100644
index 0000000..e690725
--- /dev/null
+++ b/lib/projections/poly.js
@@ -0,0 +1,128 @@
+var e0fn = require('../common/e0fn');
+var e1fn = require('../common/e1fn');
+var e2fn = require('../common/e2fn');
+var e3fn = require('../common/e3fn');
+var adjust_lon = require('../common/adjust_lon');
+var adjust_lat = require('../common/adjust_lat');
+var mlfn = require('../common/mlfn');
+var EPSLN = 1.0e-10;
+var gN = require('../common/gN');
+var MAX_ITER = 20;
+exports.init = function() {
+ /* Place parameters in static storage for common use
+ -------------------------------------------------*/
+ this.temp = this.b / this.a;
+ this.es = 1 - Math.pow(this.temp, 2); // devait etre dans tmerc.js mais n y est pas donc je commente sinon retour de valeurs nulles
+ this.e = Math.sqrt(this.es);
+ this.e0 = e0fn(this.es);
+ this.e1 = e1fn(this.es);
+ this.e2 = e2fn(this.es);
+ this.e3 = e3fn(this.es);
+ this.ml0 = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, this.lat0); //si que des zeros le calcul ne se fait pas
+};
+
+
+/* Polyconic forward equations--mapping lat,long to x,y
+ ---------------------------------------------------*/
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+ var x, y, el;
+ var dlon = adjust_lon(lon - this.long0);
+ el = dlon * Math.sin(lat);
+ if (this.sphere) {
+ if (Math.abs(lat) <= EPSLN) {
+ x = this.a * dlon;
+ y = -1 * this.a * this.lat0;
+ }
+ else {
+ x = this.a * Math.sin(el) / Math.tan(lat);
+ y = this.a * (adjust_lat(lat - this.lat0) + (1 - Math.cos(el)) / Math.tan(lat));
+ }
+ }
+ else {
+ if (Math.abs(lat) <= EPSLN) {
+ x = this.a * dlon;
+ y = -1 * this.ml0;
+ }
+ else {
+ var nl = gN(this.a, this.e, Math.sin(lat)) / Math.tan(lat);
+ x = nl * Math.sin(el);
+ y = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, lat) - this.ml0 + nl * (1 - Math.cos(el));
+ }
+
+ }
+ p.x = x + this.x0;
+ p.y = y + this.y0;
+ return p;
+};
+
+
+/* Inverse equations
+ -----------------*/
+exports.inverse = function(p) {
+ var lon, lat, x, y, i;
+ var al, bl;
+ var phi, dphi;
+ x = p.x - this.x0;
+ y = p.y - this.y0;
+
+ if (this.sphere) {
+ if (Math.abs(y + this.a * this.lat0) <= EPSLN) {
+ lon = adjust_lon(x / this.a + this.long0);
+ lat = 0;
+ }
+ else {
+ al = this.lat0 + y / this.a;
+ bl = x * x / this.a / this.a + al * al;
+ phi = al;
+ var tanphi;
+ for (i = MAX_ITER; i; --i) {
+ tanphi = Math.tan(phi);
+ dphi = -1 * (al * (phi * tanphi + 1) - phi - 0.5 * (phi * phi + bl) * tanphi) / ((phi - al) / tanphi - 1);
+ phi += dphi;
+ if (Math.abs(dphi) <= EPSLN) {
+ lat = phi;
+ break;
+ }
+ }
+ lon = adjust_lon(this.long0 + (Math.asin(x * Math.tan(phi) / this.a)) / Math.sin(lat));
+ }
+ }
+ else {
+ if (Math.abs(y + this.ml0) <= EPSLN) {
+ lat = 0;
+ lon = adjust_lon(this.long0 + x / this.a);
+ }
+ else {
+
+ al = (this.ml0 + y) / this.a;
+ bl = x * x / this.a / this.a + al * al;
+ phi = al;
+ var cl, mln, mlnp, ma;
+ var con;
+ for (i = MAX_ITER; i; --i) {
+ con = this.e * Math.sin(phi);
+ cl = Math.sqrt(1 - con * con) * Math.tan(phi);
+ mln = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, phi);
+ mlnp = this.e0 - 2 * this.e1 * Math.cos(2 * phi) + 4 * this.e2 * Math.cos(4 * phi) - 6 * this.e3 * Math.cos(6 * phi);
+ ma = mln / this.a;
+ dphi = (al * (cl * ma + 1) - ma - 0.5 * cl * (ma * ma + bl)) / (this.es * Math.sin(2 * phi) * (ma * ma + bl - 2 * al * ma) / (4 * cl) + (al - ma) * (cl * mlnp - 2 / Math.sin(2 * phi)) - mlnp);
+ phi -= dphi;
+ if (Math.abs(dphi) <= EPSLN) {
+ lat = phi;
+ break;
+ }
+ }
+
+ //lat=phi4z(this.e,this.e0,this.e1,this.e2,this.e3,al,bl,0,0);
+ cl = Math.sqrt(1 - this.es * Math.pow(Math.sin(lat), 2)) * Math.tan(lat);
+ lon = adjust_lon(this.long0 + Math.asin(x * cl / this.a) / Math.sin(lat));
+ }
+ }
+
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["Polyconic", "poly"];
\ No newline at end of file
diff --git a/lib/projections/sinu.js b/lib/projections/sinu.js
new file mode 100644
index 0000000..c0ded88
--- /dev/null
+++ b/lib/projections/sinu.js
@@ -0,0 +1,106 @@
+var adjust_lon = require('../common/adjust_lon');
+var adjust_lat = require('../common/adjust_lat');
+var pj_enfn = require('../common/pj_enfn');
+var MAX_ITER = 20;
+var pj_mlfn = require('../common/pj_mlfn');
+var pj_inv_mlfn = require('../common/pj_inv_mlfn');
+var HALF_PI = Math.PI/2;
+var EPSLN = 1.0e-10;
+var asinz = require('../common/asinz');
+exports.init = function() {
+ /* Place parameters in static storage for common use
+ -------------------------------------------------*/
+
+
+ if (!this.sphere) {
+ this.en = pj_enfn(this.es);
+ }
+ else {
+ this.n = 1;
+ this.m = 0;
+ this.es = 0;
+ this.C_y = Math.sqrt((this.m + 1) / this.n);
+ this.C_x = this.C_y / (this.m + 1);
+ }
+
+};
+
+/* Sinusoidal forward equations--mapping lat,long to x,y
+ -----------------------------------------------------*/
+exports.forward = function(p) {
+ var x, y;
+ var lon = p.x;
+ var lat = p.y;
+ /* Forward equations
+ -----------------*/
+ lon = adjust_lon(lon - this.long0);
+
+ if (this.sphere) {
+ if (!this.m) {
+ lat = this.n !== 1 ? Math.asin(this.n * Math.sin(lat)) : lat;
+ }
+ else {
+ var k = this.n * Math.sin(lat);
+ for (var i = MAX_ITER; i; --i) {
+ var V = (this.m * lat + Math.sin(lat) - k) / (this.m + Math.cos(lat));
+ lat -= V;
+ if (Math.abs(V) < EPSLN) {
+ break;
+ }
+ }
+ }
+ x = this.a * this.C_x * lon * (this.m + Math.cos(lat));
+ y = this.a * this.C_y * lat;
+
+ }
+ else {
+
+ var s = Math.sin(lat);
+ var c = Math.cos(lat);
+ y = this.a * pj_mlfn(lat, s, c, this.en);
+ x = this.a * lon * c / Math.sqrt(1 - this.es * s * s);
+ }
+
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+exports.inverse = function(p) {
+ var lat, temp, lon, s;
+
+ p.x -= this.x0;
+ lon = p.x / this.a;
+ p.y -= this.y0;
+ lat = p.y / this.a;
+
+ if (this.sphere) {
+ lat /= this.C_y;
+ lon = lon / (this.C_x * (this.m + Math.cos(lat)));
+ if (this.m) {
+ lat = asinz((this.m * lat + Math.sin(lat)) / this.n);
+ }
+ else if (this.n !== 1) {
+ lat = asinz(Math.sin(lat) / this.n);
+ }
+ lon = adjust_lon(lon + this.long0);
+ lat = adjust_lat(lat);
+ }
+ else {
+ lat = pj_inv_mlfn(p.y / this.a, this.es, this.en);
+ s = Math.abs(lat);
+ if (s < HALF_PI) {
+ s = Math.sin(lat);
+ temp = this.long0 + p.x * Math.sqrt(1 - this.es * s * s) / (this.a * Math.cos(lat));
+ //temp = this.long0 + p.x / (this.a * Math.cos(lat));
+ lon = adjust_lon(temp);
+ }
+ else if ((s - EPSLN) < HALF_PI) {
+ lon = this.long0;
+ }
+ }
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["Sinusoidal", "sinu"];
\ No newline at end of file
diff --git a/lib/projections/somerc.js b/lib/projections/somerc.js
new file mode 100644
index 0000000..80d8961
--- /dev/null
+++ b/lib/projections/somerc.js
@@ -0,0 +1,80 @@
+/*
+ references:
+ Formules et constantes pour le Calcul pour la
+ projection cylindrique conforme à axe oblique et pour la transformation entre
+ des systèmes de référence.
+ http://www.swisstopo.admin.ch/internet/swisstopo/fr/home/topics/survey/sys/refsys/switzerland.parsysrelated1.31216.downloadList.77004.DownloadFile.tmp/swissprojectionfr.pdf
+ */
+exports.init = function() {
+ var phy0 = this.lat0;
+ this.lambda0 = this.long0;
+ var sinPhy0 = Math.sin(phy0);
+ var semiMajorAxis = this.a;
+ var invF = this.rf;
+ var flattening = 1 / invF;
+ var e2 = 2 * flattening - Math.pow(flattening, 2);
+ var e = this.e = Math.sqrt(e2);
+ this.R = this.k0 * semiMajorAxis * Math.sqrt(1 - e2) / (1 - e2 * Math.pow(sinPhy0, 2));
+ this.alpha = Math.sqrt(1 + e2 / (1 - e2) * Math.pow(Math.cos(phy0), 4));
+ this.b0 = Math.asin(sinPhy0 / this.alpha);
+ var k1 = Math.log(Math.tan(Math.PI / 4 + this.b0 / 2));
+ var k2 = Math.log(Math.tan(Math.PI / 4 + phy0 / 2));
+ var k3 = Math.log((1 + e * sinPhy0) / (1 - e * sinPhy0));
+ this.K = k1 - this.alpha * k2 + this.alpha * e / 2 * k3;
+};
+
+
+exports.forward = function(p) {
+ var Sa1 = Math.log(Math.tan(Math.PI / 4 - p.y / 2));
+ var Sa2 = this.e / 2 * Math.log((1 + this.e * Math.sin(p.y)) / (1 - this.e * Math.sin(p.y)));
+ var S = -this.alpha * (Sa1 + Sa2) + this.K;
+
+ // spheric latitude
+ var b = 2 * (Math.atan(Math.exp(S)) - Math.PI / 4);
+
+ // spheric longitude
+ var I = this.alpha * (p.x - this.lambda0);
+
+ // psoeudo equatorial rotation
+ var rotI = Math.atan(Math.sin(I) / (Math.sin(this.b0) * Math.tan(b) + Math.cos(this.b0) * Math.cos(I)));
+
+ var rotB = Math.asin(Math.cos(this.b0) * Math.sin(b) - Math.sin(this.b0) * Math.cos(b) * Math.cos(I));
+
+ p.y = this.R / 2 * Math.log((1 + Math.sin(rotB)) / (1 - Math.sin(rotB))) + this.y0;
+ p.x = this.R * rotI + this.x0;
+ return p;
+};
+
+exports.inverse = function(p) {
+ var Y = p.x - this.x0;
+ var X = p.y - this.y0;
+
+ var rotI = Y / this.R;
+ var rotB = 2 * (Math.atan(Math.exp(X / this.R)) - Math.PI / 4);
+
+ var b = Math.asin(Math.cos(this.b0) * Math.sin(rotB) + Math.sin(this.b0) * Math.cos(rotB) * Math.cos(rotI));
+ var I = Math.atan(Math.sin(rotI) / (Math.cos(this.b0) * Math.cos(rotI) - Math.sin(this.b0) * Math.tan(rotB)));
+
+ var lambda = this.lambda0 + I / this.alpha;
+
+ var S = 0;
+ var phy = b;
+ var prevPhy = -1000;
+ var iteration = 0;
+ while (Math.abs(phy - prevPhy) > 0.0000001) {
+ if (++iteration > 20) {
+ //...reportError("omercFwdInfinity");
+ return;
+ }
+ //S = Math.log(Math.tan(Math.PI / 4 + phy / 2));
+ S = 1 / this.alpha * (Math.log(Math.tan(Math.PI / 4 + b / 2)) - this.K) + this.e * Math.log(Math.tan(Math.PI / 4 + Math.asin(this.e * Math.sin(phy)) / 2));
+ prevPhy = phy;
+ phy = 2 * Math.atan(Math.exp(S)) - Math.PI / 2;
+ }
+
+ p.x = lambda;
+ p.y = phy;
+ return p;
+};
+
+exports.names = ["somerc"];
diff --git a/lib/projections/stere.js b/lib/projections/stere.js
new file mode 100644
index 0000000..fcae227
--- /dev/null
+++ b/lib/projections/stere.js
@@ -0,0 +1,166 @@
+var HALF_PI = Math.PI/2;
+var EPSLN = 1.0e-10;
+var sign = require('../common/sign');
+var msfnz = require('../common/msfnz');
+var tsfnz = require('../common/tsfnz');
+var phi2z = require('../common/phi2z');
+var adjust_lon = require('../common/adjust_lon');
+exports.ssfn_ = function(phit, sinphi, eccen) {
+ sinphi *= eccen;
+ return (Math.tan(0.5 * (HALF_PI + phit)) * Math.pow((1 - sinphi) / (1 + sinphi), 0.5 * eccen));
+};
+
+exports.init = function() {
+ this.coslat0 = Math.cos(this.lat0);
+ this.sinlat0 = Math.sin(this.lat0);
+ if (this.sphere) {
+ if (this.k0 === 1 && !isNaN(this.lat_ts) && Math.abs(this.coslat0) <= EPSLN) {
+ this.k0 = 0.5 * (1 + sign(this.lat0) * Math.sin(this.lat_ts));
+ }
+ }
+ else {
+ if (Math.abs(this.coslat0) <= EPSLN) {
+ if (this.lat0 > 0) {
+ //North pole
+ //trace('stere:north pole');
+ this.con = 1;
+ }
+ else {
+ //South pole
+ //trace('stere:south pole');
+ this.con = -1;
+ }
+ }
+ this.cons = Math.sqrt(Math.pow(1 + this.e, 1 + this.e) * Math.pow(1 - this.e, 1 - this.e));
+ if (this.k0 === 1 && !isNaN(this.lat_ts) && Math.abs(this.coslat0) <= EPSLN) {
+ this.k0 = 0.5 * this.cons * msfnz(this.e, Math.sin(this.lat_ts), Math.cos(this.lat_ts)) / tsfnz(this.e, this.con * this.lat_ts, this.con * Math.sin(this.lat_ts));
+ }
+ this.ms1 = msfnz(this.e, this.sinlat0, this.coslat0);
+ this.X0 = 2 * Math.atan(this.ssfn_(this.lat0, this.sinlat0, this.e)) - HALF_PI;
+ this.cosX0 = Math.cos(this.X0);
+ this.sinX0 = Math.sin(this.X0);
+ }
+};
+
+// Stereographic forward equations--mapping lat,long to x,y
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+ var sinlat = Math.sin(lat);
+ var coslat = Math.cos(lat);
+ var A, X, sinX, cosX, ts, rh;
+ var dlon = adjust_lon(lon - this.long0);
+
+ if (Math.abs(Math.abs(lon - this.long0) - Math.PI) <= EPSLN && Math.abs(lat + this.lat0) <= EPSLN) {
+ //case of the origine point
+ //trace('stere:this is the origin point');
+ p.x = NaN;
+ p.y = NaN;
+ return p;
+ }
+ if (this.sphere) {
+ //trace('stere:sphere case');
+ A = 2 * this.k0 / (1 + this.sinlat0 * sinlat + this.coslat0 * coslat * Math.cos(dlon));
+ p.x = this.a * A * coslat * Math.sin(dlon) + this.x0;
+ p.y = this.a * A * (this.coslat0 * sinlat - this.sinlat0 * coslat * Math.cos(dlon)) + this.y0;
+ return p;
+ }
+ else {
+ X = 2 * Math.atan(this.ssfn_(lat, sinlat, this.e)) - HALF_PI;
+ cosX = Math.cos(X);
+ sinX = Math.sin(X);
+ if (Math.abs(this.coslat0) <= EPSLN) {
+ ts = tsfnz(this.e, lat * this.con, this.con * sinlat);
+ rh = 2 * this.a * this.k0 * ts / this.cons;
+ p.x = this.x0 + rh * Math.sin(lon - this.long0);
+ p.y = this.y0 - this.con * rh * Math.cos(lon - this.long0);
+ //trace(p.toString());
+ return p;
+ }
+ else if (Math.abs(this.sinlat0) < EPSLN) {
+ //Eq
+ //trace('stere:equateur');
+ A = 2 * this.a * this.k0 / (1 + cosX * Math.cos(dlon));
+ p.y = A * sinX;
+ }
+ else {
+ //other case
+ //trace('stere:normal case');
+ A = 2 * this.a * this.k0 * this.ms1 / (this.cosX0 * (1 + this.sinX0 * sinX + this.cosX0 * cosX * Math.cos(dlon)));
+ p.y = A * (this.cosX0 * sinX - this.sinX0 * cosX * Math.cos(dlon)) + this.y0;
+ }
+ p.x = A * cosX * Math.sin(dlon) + this.x0;
+ }
+ //trace(p.toString());
+ return p;
+};
+
+
+//* Stereographic inverse equations--mapping x,y to lat/long
+exports.inverse = function(p) {
+ p.x -= this.x0;
+ p.y -= this.y0;
+ var lon, lat, ts, ce, Chi;
+ var rh = Math.sqrt(p.x * p.x + p.y * p.y);
+ if (this.sphere) {
+ var c = 2 * Math.atan(rh / (0.5 * this.a * this.k0));
+ lon = this.long0;
+ lat = this.lat0;
+ if (rh <= EPSLN) {
+ p.x = lon;
+ p.y = lat;
+ return p;
+ }
+ lat = Math.asin(Math.cos(c) * this.sinlat0 + p.y * Math.sin(c) * this.coslat0 / rh);
+ if (Math.abs(this.coslat0) < EPSLN) {
+ if (this.lat0 > 0) {
+ lon = adjust_lon(this.long0 + Math.atan2(p.x, - 1 * p.y));
+ }
+ else {
+ lon = adjust_lon(this.long0 + Math.atan2(p.x, p.y));
+ }
+ }
+ else {
+ lon = adjust_lon(this.long0 + Math.atan2(p.x * Math.sin(c), rh * this.coslat0 * Math.cos(c) - p.y * this.sinlat0 * Math.sin(c)));
+ }
+ p.x = lon;
+ p.y = lat;
+ return p;
+ }
+ else {
+ if (Math.abs(this.coslat0) <= EPSLN) {
+ if (rh <= EPSLN) {
+ lat = this.lat0;
+ lon = this.long0;
+ p.x = lon;
+ p.y = lat;
+ //trace(p.toString());
+ return p;
+ }
+ p.x *= this.con;
+ p.y *= this.con;
+ ts = rh * this.cons / (2 * this.a * this.k0);
+ lat = this.con * phi2z(this.e, ts);
+ lon = this.con * adjust_lon(this.con * this.long0 + Math.atan2(p.x, - 1 * p.y));
+ }
+ else {
+ ce = 2 * Math.atan(rh * this.cosX0 / (2 * this.a * this.k0 * this.ms1));
+ lon = this.long0;
+ if (rh <= EPSLN) {
+ Chi = this.X0;
+ }
+ else {
+ Chi = Math.asin(Math.cos(ce) * this.sinX0 + p.y * Math.sin(ce) * this.cosX0 / rh);
+ lon = adjust_lon(this.long0 + Math.atan2(p.x * Math.sin(ce), rh * this.cosX0 * Math.cos(ce) - p.y * this.sinX0 * Math.sin(ce)));
+ }
+ lat = -1 * phi2z(this.e, Math.tan(0.5 * (HALF_PI + Chi)));
+ }
+ }
+ p.x = lon;
+ p.y = lat;
+
+ //trace(p.toString());
+ return p;
+
+};
+exports.names = ["stere"];
\ No newline at end of file
diff --git a/lib/projections/sterea.js b/lib/projections/sterea.js
new file mode 100644
index 0000000..4343e5e
--- /dev/null
+++ b/lib/projections/sterea.js
@@ -0,0 +1,57 @@
+var gauss = require('./gauss');
+var adjust_lon = require('../common/adjust_lon');
+exports.init = function() {
+ gauss.init.apply(this);
+ if (!this.rc) {
+ return;
+ }
+ this.sinc0 = Math.sin(this.phic0);
+ this.cosc0 = Math.cos(this.phic0);
+ this.R2 = 2 * this.rc;
+ if (!this.title) {
+ this.title = "Oblique Stereographic Alternative";
+ }
+};
+
+exports.forward = function(p) {
+ var sinc, cosc, cosl, k;
+ p.x = adjust_lon(p.x - this.long0);
+ gauss.forward.apply(this, [p]);
+ sinc = Math.sin(p.y);
+ cosc = Math.cos(p.y);
+ cosl = Math.cos(p.x);
+ k = this.k0 * this.R2 / (1 + this.sinc0 * sinc + this.cosc0 * cosc * cosl);
+ p.x = k * cosc * Math.sin(p.x);
+ p.y = k * (this.cosc0 * sinc - this.sinc0 * cosc * cosl);
+ p.x = this.a * p.x + this.x0;
+ p.y = this.a * p.y + this.y0;
+ return p;
+};
+
+exports.inverse = function(p) {
+ var sinc, cosc, lon, lat, rho;
+ p.x = (p.x - this.x0) / this.a;
+ p.y = (p.y - this.y0) / this.a;
+
+ p.x /= this.k0;
+ p.y /= this.k0;
+ if ((rho = Math.sqrt(p.x * p.x + p.y * p.y))) {
+ var c = 2 * Math.atan2(rho, this.R2);
+ sinc = Math.sin(c);
+ cosc = Math.cos(c);
+ lat = Math.asin(cosc * this.sinc0 + p.y * sinc * this.cosc0 / rho);
+ lon = Math.atan2(p.x * sinc, rho * this.cosc0 * cosc - p.y * this.sinc0 * sinc);
+ }
+ else {
+ lat = this.phic0;
+ lon = 0;
+ }
+
+ p.x = lon;
+ p.y = lat;
+ gauss.inverse.apply(this, [p]);
+ p.x = adjust_lon(p.x + this.long0);
+ return p;
+};
+
+exports.names = ["Stereographic_North_Pole", "Oblique_Stereographic", "Polar_Stereographic", "sterea","Oblique Stereographic Alternative"];
diff --git a/lib/projections/tmerc.js b/lib/projections/tmerc.js
new file mode 100644
index 0000000..10fd51e
--- /dev/null
+++ b/lib/projections/tmerc.js
@@ -0,0 +1,135 @@
+var e0fn = require('../common/e0fn');
+var e1fn = require('../common/e1fn');
+var e2fn = require('../common/e2fn');
+var e3fn = require('../common/e3fn');
+var mlfn = require('../common/mlfn');
+var adjust_lon = require('../common/adjust_lon');
+var HALF_PI = Math.PI/2;
+var EPSLN = 1.0e-10;
+var sign = require('../common/sign');
+var asinz = require('../common/asinz');
+
+exports.init = function() {
+ this.e0 = e0fn(this.es);
+ this.e1 = e1fn(this.es);
+ this.e2 = e2fn(this.es);
+ this.e3 = e3fn(this.es);
+ this.ml0 = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, this.lat0);
+};
+
+/**
+ Transverse Mercator Forward - long/lat to x/y
+ long/lat in radians
+ */
+exports.forward = function(p) {
+ var lon = p.x;
+ var lat = p.y;
+
+ var delta_lon = adjust_lon(lon - this.long0);
+ var con;
+ var x, y;
+ var sin_phi = Math.sin(lat);
+ var cos_phi = Math.cos(lat);
+
+ if (this.sphere) {
+ var b = cos_phi * Math.sin(delta_lon);
+ if ((Math.abs(Math.abs(b) - 1)) < 0.0000000001) {
+ return (93);
+ }
+ else {
+ x = 0.5 * this.a * this.k0 * Math.log((1 + b) / (1 - b));
+ con = Math.acos(cos_phi * Math.cos(delta_lon) / Math.sqrt(1 - b * b));
+ if (lat < 0) {
+ con = -con;
+ }
+ y = this.a * this.k0 * (con - this.lat0);
+ }
+ }
+ else {
+ var al = cos_phi * delta_lon;
+ var als = Math.pow(al, 2);
+ var c = this.ep2 * Math.pow(cos_phi, 2);
+ var tq = Math.tan(lat);
+ var t = Math.pow(tq, 2);
+ con = 1 - this.es * Math.pow(sin_phi, 2);
+ var n = this.a / Math.sqrt(con);
+ var ml = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, lat);
+
+ x = this.k0 * n * al * (1 + als / 6 * (1 - t + c + als / 20 * (5 - 18 * t + Math.pow(t, 2) + 72 * c - 58 * this.ep2))) + this.x0;
+ y = this.k0 * (ml - this.ml0 + n * tq * (als * (0.5 + als / 24 * (5 - t + 9 * c + 4 * Math.pow(c, 2) + als / 30 * (61 - 58 * t + Math.pow(t, 2) + 600 * c - 330 * this.ep2))))) + this.y0;
+
+ }
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+/**
+ Transverse Mercator Inverse - x/y to long/lat
+ */
+exports.inverse = function(p) {
+ var con, phi;
+ var delta_phi;
+ var i;
+ var max_iter = 6;
+ var lat, lon;
+
+ if (this.sphere) {
+ var f = Math.exp(p.x / (this.a * this.k0));
+ var g = 0.5 * (f - 1 / f);
+ var temp = this.lat0 + p.y / (this.a * this.k0);
+ var h = Math.cos(temp);
+ con = Math.sqrt((1 - h * h) / (1 + g * g));
+ lat = asinz(con);
+ if (temp < 0) {
+ lat = -lat;
+ }
+ if ((g === 0) && (h === 0)) {
+ lon = this.long0;
+ }
+ else {
+ lon = adjust_lon(Math.atan2(g, h) + this.long0);
+ }
+ }
+ else { // ellipsoidal form
+ var x = p.x - this.x0;
+ var y = p.y - this.y0;
+
+ con = (this.ml0 + y / this.k0) / this.a;
+ phi = con;
+ for (i = 0; true; i++) {
+ delta_phi = ((con + this.e1 * Math.sin(2 * phi) - this.e2 * Math.sin(4 * phi) + this.e3 * Math.sin(6 * phi)) / this.e0) - phi;
+ phi += delta_phi;
+ if (Math.abs(delta_phi) <= EPSLN) {
+ break;
+ }
+ if (i >= max_iter) {
+ return (95);
+ }
+ } // for()
+ if (Math.abs(phi) < HALF_PI) {
+ var sin_phi = Math.sin(phi);
+ var cos_phi = Math.cos(phi);
+ var tan_phi = Math.tan(phi);
+ var c = this.ep2 * Math.pow(cos_phi, 2);
+ var cs = Math.pow(c, 2);
+ var t = Math.pow(tan_phi, 2);
+ var ts = Math.pow(t, 2);
+ con = 1 - this.es * Math.pow(sin_phi, 2);
+ var n = this.a / Math.sqrt(con);
+ var r = n * (1 - this.es) / con;
+ var d = x / (n * this.k0);
+ var ds = Math.pow(d, 2);
+ lat = phi - (n * tan_phi * ds / r) * (0.5 - ds / 24 * (5 + 3 * t + 10 * c - 4 * cs - 9 * this.ep2 - ds / 30 * (61 + 90 * t + 298 * c + 45 * ts - 252 * this.ep2 - 3 * cs)));
+ lon = adjust_lon(this.long0 + (d * (1 - ds / 6 * (1 + 2 * t + c - ds / 20 * (5 - 2 * c + 28 * t - 3 * cs + 8 * this.ep2 + 24 * ts))) / cos_phi));
+ }
+ else {
+ lat = HALF_PI * sign(y);
+ lon = this.long0;
+ }
+ }
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["Transverse_Mercator", "Transverse Mercator", "tmerc"];
diff --git a/lib/projections/utm.js b/lib/projections/utm.js
new file mode 100644
index 0000000..18245cc
--- /dev/null
+++ b/lib/projections/utm.js
@@ -0,0 +1,18 @@
+var D2R = 0.01745329251994329577;
+var tmerc = require('./tmerc');
+exports.dependsOn = 'tmerc';
+exports.init = function() {
+ if (!this.zone) {
+ return;
+ }
+ this.lat0 = 0;
+ this.long0 = ((6 * Math.abs(this.zone)) - 183) * D2R;
+ this.x0 = 500000;
+ this.y0 = this.utmSouth ? 10000000 : 0;
+ this.k0 = 0.9996;
+
+ tmerc.init.apply(this);
+ this.forward = tmerc.forward;
+ this.inverse = tmerc.inverse;
+};
+exports.names = ["Universal Transverse Mercator System", "utm"];
diff --git a/lib/projections/vandg.js b/lib/projections/vandg.js
new file mode 100644
index 0000000..a4babbe
--- /dev/null
+++ b/lib/projections/vandg.js
@@ -0,0 +1,120 @@
+var adjust_lon = require('../common/adjust_lon');
+var HALF_PI = Math.PI/2;
+var EPSLN = 1.0e-10;
+var asinz = require('../common/asinz');
+/* Initialize the Van Der Grinten projection
+ ----------------------------------------*/
+exports.init = function() {
+ //this.R = 6370997; //Radius of earth
+ this.R = this.a;
+};
+
+exports.forward = function(p) {
+
+ var lon = p.x;
+ var lat = p.y;
+
+ /* Forward equations
+ -----------------*/
+ var dlon = adjust_lon(lon - this.long0);
+ var x, y;
+
+ if (Math.abs(lat) <= EPSLN) {
+ x = this.x0 + this.R * dlon;
+ y = this.y0;
+ }
+ var theta = asinz(2 * Math.abs(lat / Math.PI));
+ if ((Math.abs(dlon) <= EPSLN) || (Math.abs(Math.abs(lat) - HALF_PI) <= EPSLN)) {
+ x = this.x0;
+ if (lat >= 0) {
+ y = this.y0 + Math.PI * this.R * Math.tan(0.5 * theta);
+ }
+ else {
+ y = this.y0 + Math.PI * this.R * -Math.tan(0.5 * theta);
+ }
+ // return(OK);
+ }
+ var al = 0.5 * Math.abs((Math.PI / dlon) - (dlon / Math.PI));
+ var asq = al * al;
+ var sinth = Math.sin(theta);
+ var costh = Math.cos(theta);
+
+ var g = costh / (sinth + costh - 1);
+ var gsq = g * g;
+ var m = g * (2 / sinth - 1);
+ var msq = m * m;
+ var con = Math.PI * this.R * (al * (g - msq) + Math.sqrt(asq * (g - msq) * (g - msq) - (msq + asq) * (gsq - msq))) / (msq + asq);
+ if (dlon < 0) {
+ con = -con;
+ }
+ x = this.x0 + con;
+ //con = Math.abs(con / (Math.PI * this.R));
+ var q = asq + g;
+ con = Math.PI * this.R * (m * q - al * Math.sqrt((msq + asq) * (asq + 1) - q * q)) / (msq + asq);
+ if (lat >= 0) {
+ //y = this.y0 + Math.PI * this.R * Math.sqrt(1 - con * con - 2 * al * con);
+ y = this.y0 + con;
+ }
+ else {
+ //y = this.y0 - Math.PI * this.R * Math.sqrt(1 - con * con - 2 * al * con);
+ y = this.y0 - con;
+ }
+ p.x = x;
+ p.y = y;
+ return p;
+};
+
+/* Van Der Grinten inverse equations--mapping x,y to lat/long
+ ---------------------------------------------------------*/
+exports.inverse = function(p) {
+ var lon, lat;
+ var xx, yy, xys, c1, c2, c3;
+ var a1;
+ var m1;
+ var con;
+ var th1;
+ var d;
+
+ /* inverse equations
+ -----------------*/
+ p.x -= this.x0;
+ p.y -= this.y0;
+ con = Math.PI * this.R;
+ xx = p.x / con;
+ yy = p.y / con;
+ xys = xx * xx + yy * yy;
+ c1 = -Math.abs(yy) * (1 + xys);
+ c2 = c1 - 2 * yy * yy + xx * xx;
+ c3 = -2 * c1 + 1 + 2 * yy * yy + xys * xys;
+ d = yy * yy / c3 + (2 * c2 * c2 * c2 / c3 / c3 / c3 - 9 * c1 * c2 / c3 / c3) / 27;
+ a1 = (c1 - c2 * c2 / 3 / c3) / c3;
+ m1 = 2 * Math.sqrt(-a1 / 3);
+ con = ((3 * d) / a1) / m1;
+ if (Math.abs(con) > 1) {
+ if (con >= 0) {
+ con = 1;
+ }
+ else {
+ con = -1;
+ }
+ }
+ th1 = Math.acos(con) / 3;
+ if (p.y >= 0) {
+ lat = (-m1 * Math.cos(th1 + Math.PI / 3) - c2 / 3 / c3) * Math.PI;
+ }
+ else {
+ lat = -(-m1 * Math.cos(th1 + Math.PI / 3) - c2 / 3 / c3) * Math.PI;
+ }
+
+ if (Math.abs(xx) < EPSLN) {
+ lon = this.long0;
+ }
+ else {
+ lon = adjust_lon(this.long0 + Math.PI * (xys - 1 + Math.sqrt(1 + 2 * (xx * xx - yy * yy) + xys * xys)) / 2 / xx);
+ }
+
+ p.x = lon;
+ p.y = lat;
+ return p;
+};
+exports.names = ["Van_der_Grinten_I", "VanDerGrinten", "vandg"];
\ No newline at end of file
diff --git a/lib/transform.js b/lib/transform.js
new file mode 100644
index 0000000..2ed0fd6
--- /dev/null
+++ b/lib/transform.js
@@ -0,0 +1,72 @@
+var D2R = 0.01745329251994329577;
+var R2D = 57.29577951308232088;
+var PJD_3PARAM = 1;
+var PJD_7PARAM = 2;
+var datum_transform = require('./datum_transform');
+var adjust_axis = require('./adjust_axis');
+var proj = require('./Proj');
+var toPoint = require('./common/toPoint');
+module.exports = function transform(source, dest, point) {
+ var wgs84;
+ if (Array.isArray(point)) {
+ point = toPoint(point);
+ }
+ function checkNotWGS(source, dest) {
+ return ((source.datum.datum_type === PJD_3PARAM || source.datum.datum_type === PJD_7PARAM) && dest.datumCode !== "WGS84");
+ }
+
+ // Workaround for datum shifts towgs84, if either source or destination projection is not wgs84
+ if (source.datum && dest.datum && (checkNotWGS(source, dest) || checkNotWGS(dest, source))) {
+ wgs84 = new proj('WGS84');
+ transform(source, wgs84, point);
+ source = wgs84;
+ }
+ // DGR, 2010/11/12
+ if (source.axis !== "enu") {
+ adjust_axis(source, false, point);
+ }
+ // Transform source points to long/lat, if they aren't already.
+ if (source.projName === "longlat") {
+ point.x *= D2R; // convert degrees to radians
+ point.y *= D2R;
+ }
+ else {
+ if (source.to_meter) {
+ point.x *= source.to_meter;
+ point.y *= source.to_meter;
+ }
+ source.inverse(point); // Convert Cartesian to longlat
+ }
+ // Adjust for the prime meridian if necessary
+ if (source.from_greenwich) {
+ point.x += source.from_greenwich;
+ }
+
+ // Convert datums if needed, and if possible.
+ point = datum_transform(source.datum, dest.datum, point);
+
+ // Adjust for the prime meridian if necessary
+ if (dest.from_greenwich) {
+ point.x -= dest.from_greenwich;
+ }
+
+ if (dest.projName === "longlat") {
+ // convert radians to decimal degrees
+ point.x *= R2D;
+ point.y *= R2D;
+ }
+ else { // else project
+ dest.forward(point);
+ if (dest.to_meter) {
+ point.x /= dest.to_meter;
+ point.y /= dest.to_meter;
+ }
+ }
+
+ // DGR, 2010/11/12
+ if (dest.axis !== "enu") {
+ adjust_axis(dest, true, point);
+ }
+
+ return point;
+};
\ No newline at end of file
diff --git a/lib/wkt.js b/lib/wkt.js
new file mode 100644
index 0000000..d268f5c
--- /dev/null
+++ b/lib/wkt.js
@@ -0,0 +1,213 @@
+var D2R = 0.01745329251994329577;
+var extend = require('./extend');
+
+function mapit(obj, key, v) {
+ obj[key] = v.map(function(aa) {
+ var o = {};
+ sExpr(aa, o);
+ return o;
+ }).reduce(function(a, b) {
+ return extend(a, b);
+ }, {});
+}
+
+function sExpr(v, obj) {
+ var key;
+ if (!Array.isArray(v)) {
+ obj[v] = true;
+ return;
+ }
+ else {
+ key = v.shift();
+ if (key === 'PARAMETER') {
+ key = v.shift();
+ }
+ if (v.length === 1) {
+ if (Array.isArray(v[0])) {
+ obj[key] = {};
+ sExpr(v[0], obj[key]);
+ }
+ else {
+ obj[key] = v[0];
+ }
+ }
+ else if (!v.length) {
+ obj[key] = true;
+ }
+ else if (key === 'TOWGS84') {
+ obj[key] = v;
+ }
+ else {
+ obj[key] = {};
+ if (['UNIT', 'PRIMEM', 'VERT_DATUM'].indexOf(key) > -1) {
+ obj[key] = {
+ name: v[0].toLowerCase(),
+ convert: v[1]
+ };
+ if (v.length === 3) {
+ obj[key].auth = v[2];
+ }
+ }
+ else if (key === 'SPHEROID') {
+ obj[key] = {
+ name: v[0],
+ a: v[1],
+ rf: v[2]
+ };
+ if (v.length === 4) {
+ obj[key].auth = v[3];
+ }
+ }
+ else if (['GEOGCS', 'GEOCCS', 'DATUM', 'VERT_CS', 'COMPD_CS', 'LOCAL_CS', 'FITTED_CS', 'LOCAL_DATUM'].indexOf(key) > -1) {
+ v[0] = ['name', v[0]];
+ mapit(obj, key, v);
+ }
+ else if (v.every(function(aa) {
+ return Array.isArray(aa);
+ })) {
+ mapit(obj, key, v);
+ }
+ else {
+ sExpr(v, obj[key]);
+ }
+ }
+ }
+}
+
+function rename(obj, params) {
+ var outName = params[0];
+ var inName = params[1];
+ if (!(outName in obj) && (inName in obj)) {
+ obj[outName] = obj[inName];
+ if (params.length === 3) {
+ obj[outName] = params[2](obj[outName]);
+ }
+ }
+}
+
+function d2r(input) {
+ return input * D2R;
+}
+
+function cleanWKT(wkt) {
+ if (wkt.type === 'GEOGCS') {
+ wkt.projName = 'longlat';
+ }
+ else if (wkt.type === 'LOCAL_CS') {
+ wkt.projName = 'identity';
+ wkt.local = true;
+ }
+ else {
+ if (typeof wkt.PROJECTION === "object") {
+ wkt.projName = Object.keys(wkt.PROJECTION)[0];
+ }
+ else {
+ wkt.projName = wkt.PROJECTION;
+ }
+ }
+ if (wkt.UNIT) {
+ wkt.units = wkt.UNIT.name.toLowerCase();
+ if (wkt.units === 'metre') {
+ wkt.units = 'meter';
+ }
+ if (wkt.UNIT.convert) {
+ wkt.to_meter = parseFloat(wkt.UNIT.convert, 10);
+ }
+ }
+
+ if (wkt.GEOGCS) {
+ //if(wkt.GEOGCS.PRIMEM&&wkt.GEOGCS.PRIMEM.convert){
+ // wkt.from_greenwich=wkt.GEOGCS.PRIMEM.convert*D2R;
+ //}
+ if (wkt.GEOGCS.DATUM) {
+ wkt.datumCode = wkt.GEOGCS.DATUM.name.toLowerCase();
+ }
+ else {
+ wkt.datumCode = wkt.GEOGCS.name.toLowerCase();
+ }
+ if (wkt.datumCode.slice(0, 2) === 'd_') {
+ wkt.datumCode = wkt.datumCode.slice(2);
+ }
+ if (wkt.datumCode === 'new_zealand_geodetic_datum_1949' || wkt.datumCode === 'new_zealand_1949') {
+ wkt.datumCode = 'nzgd49';
+ }
+ if (wkt.datumCode === "wgs_1984") {
+ if (wkt.PROJECTION === 'Mercator_Auxiliary_Sphere') {
+ wkt.sphere = true;
+ }
+ wkt.datumCode = 'wgs84';
+ }
+ if (wkt.datumCode.slice(-6) === '_ferro') {
+ wkt.datumCode = wkt.datumCode.slice(0, - 6);
+ }
+ if (wkt.datumCode.slice(-8) === '_jakarta') {
+ wkt.datumCode = wkt.datumCode.slice(0, - 8);
+ }
+ if (~wkt.datumCode.indexOf('belge')) {
+ wkt.datumCode = "rnb72";
+ }
+ if (wkt.GEOGCS.DATUM && wkt.GEOGCS.DATUM.SPHEROID) {
+ wkt.ellps = wkt.GEOGCS.DATUM.SPHEROID.name.replace('_19', '').replace(/[Cc]larke\_18/, 'clrk');
+ if (wkt.ellps.toLowerCase().slice(0, 13) === "international") {
+ wkt.ellps = 'intl';
+ }
+
+ wkt.a = wkt.GEOGCS.DATUM.SPHEROID.a;
+ wkt.rf = parseFloat(wkt.GEOGCS.DATUM.SPHEROID.rf, 10);
+ }
+ if (~wkt.datumCode.indexOf('osgb_1936')) {
+ wkt.datumCode = "osgb36";
+ }
+ }
+ if (wkt.b && !isFinite(wkt.b)) {
+ wkt.b = wkt.a;
+ }
+
+ function toMeter(input) {
+ var ratio = wkt.to_meter || 1;
+ return parseFloat(input, 10) * ratio;
+ }
+ var renamer = function(a) {
+ return rename(wkt, a);
+ };
+ var list = [
+ ['standard_parallel_1', 'Standard_Parallel_1'],
+ ['standard_parallel_2', 'Standard_Parallel_2'],
+ ['false_easting', 'False_Easting'],
+ ['false_northing', 'False_Northing'],
+ ['central_meridian', 'Central_Meridian'],
+ ['latitude_of_origin', 'Latitude_Of_Origin'],
+ ['latitude_of_origin', 'Central_Parallel'],
+ ['scale_factor', 'Scale_Factor'],
+ ['k0', 'scale_factor'],
+ ['latitude_of_center', 'Latitude_of_center'],
+ ['lat0', 'latitude_of_center', d2r],
+ ['longitude_of_center', 'Longitude_Of_Center'],
+ ['longc', 'longitude_of_center', d2r],
+ ['x0', 'false_easting', toMeter],
+ ['y0', 'false_northing', toMeter],
+ ['long0', 'central_meridian', d2r],
+ ['lat0', 'latitude_of_origin', d2r],
+ ['lat0', 'standard_parallel_1', d2r],
+ ['lat1', 'standard_parallel_1', d2r],
+ ['lat2', 'standard_parallel_2', d2r],
+ ['alpha', 'azimuth', d2r],
+ ['srsCode', 'name']
+ ];
+ list.forEach(renamer);
+ if (!wkt.long0 && wkt.longc && (wkt.PROJECTION === 'Albers_Conic_Equal_Area' || wkt.PROJECTION === "Lambert_Azimuthal_Equal_Area")) {
+ wkt.long0 = wkt.longc;
+ }
+}
+module.exports = function(wkt, self) {
+ var lisp = JSON.parse(("," + wkt).replace(/\s*\,\s*([A-Z_0-9]+?)(\[)/g, ',["$1",').slice(1).replace(/\s*\,\s*([A-Z_0-9]+?)\]/g, ',"$1"]').replace(/,\["VERTCS".+/,''));
+ var type = lisp.shift();
+ var name = lisp.shift();
+ lisp.unshift(['name', name]);
+ lisp.unshift(['type', type]);
+ lisp.unshift('output');
+ var obj = {};
+ sExpr(lisp, obj);
+ cleanWKT(obj.output);
+ return extend(self, obj.output);
+};
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..331f975
--- /dev/null
+++ b/package.json
@@ -0,0 +1,46 @@
+{
+ "name": "proj4",
+ "version": "2.3.3",
+ "description": "Proj4js is a JavaScript library to transform point coordinates from one coordinate system to another, including datum transformations.",
+ "main": "lib/index.js",
+ "directories": {
+ "test": "test",
+ "doc": "docs"
+ },
+ "scripts": {
+ "test": "./node_modules/istanbul/lib/cli.js test ./node_modules/mocha/bin/_mocha test/test.js"
+ },
+ "repository": {
+ "type": "git",
+ "url": "git://github.com/proj4js/proj4js.git"
+ },
+ "author": "",
+ "license": "MIT",
+ "jam": {
+ "main": "dist/proj4.js",
+ "include": [
+ "dist/proj4.js",
+ "README.md",
+ "AUTHORS",
+ "LICENSE.md"
+ ]
+ },
+ "devDependencies": {
+ "grunt-cli": "~0.1.13",
+ "grunt": "~0.4.2",
+ "grunt-contrib-connect": "~0.6.0",
+ "grunt-contrib-jshint": "~0.8.0",
+ "chai": "~1.8.1",
+ "mocha": "~1.17.1",
+ "grunt-mocha-phantomjs": "~0.4.0",
+ "browserify": "~3.24.5",
+ "grunt-browserify": "~1.3.0",
+ "grunt-contrib-uglify": "~0.3.2",
+ "curl": "git://github.com/cujojs/curl.git",
+ "istanbul": "~0.2.4",
+ "tin": "~0.4.0"
+ },
+ "dependencies": {
+ "mgrs": "0.0.0"
+ }
+}
diff --git a/publish.sh b/publish.sh
new file mode 100755
index 0000000..fbd494e
--- /dev/null
+++ b/publish.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+
+# get current version
+VERSION=$(npm ls --json=true proj4js | grep version | awk '{ print $2}'| sed -e 's/^"//' -e 's/"$//')
+
+# Build
+git checkout -b build
+grunt
+git add dist -f
+git commit -m "build $VERSION"
+
+# Tag and push
+git tag $VERSION
+git push --tags git at github.com:proj4js/proj4js.git $VERSION
+
+# Publish
+npm publish
+jam publish
+
+# Cleanup
+git checkout master
+git branch -D build
\ No newline at end of file
diff --git a/test/amd.html b/test/amd.html
new file mode 100644
index 0000000..b7cb9c3
--- /dev/null
+++ b/test/amd.html
@@ -0,0 +1,63 @@
+<html>
+<head>
+ <meta charset="utf-8">
+ <title>Mocha Tests</title>
+ <link rel="stylesheet" href="../node_modules/mocha/mocha.css" />
+</head>
+<body>
+ <script src="../node_modules/mocha/mocha.js"></script>
+ <div id="mocha"></div>
+ <script src="../node_modules/curl/src/curl.js"></script>
+ <script src="test.js"></script>
+ <script>
+ curl.config({
+ //By default load any module IDs from js/lib
+ waitSeconds:15,
+ use: {
+ mocha: {
+ attach: 'mocha'
+ },
+ mochaPhantomJS: {
+ attach: 'mochaPhantomJS'
+ },
+ testPoints: {
+ attach: 'testPoints'
+ },
+
+ aWKT: {
+ attach: 'aWKT'
+ }
+ },packages: [
+ {
+ name: 'proj4',
+ location: '../lib',
+ main: 'index.js',
+ config: { moduleLoader: '../node_modules/curl/src/curl/loader/cjsm11' } /* <-- hey! */
+ },
+ {
+ name:'mgrs',
+ location:'../node_modules/mgrs',
+ main:'mgrs.js',
+ config: { moduleLoader: '../node_modules/curl/src/curl/loader/cjsm11' } /* <-- hey! */
+ }
+ ]
+});
+mocha.setup({
+ ui: "bdd",
+ globals: ["console"],
+ timeout: 300000,
+ ignoreLeaks: true
+ });
+ curl(['../node_modules/chai/chai.js', 'proj4','testData']).then(startTests).then(function(){
+ if (window.mochaPhantomJS) {
+ window.mochaPhantomJS.run();
+ } else {
+ window.mocha.run();
+ }
+ });
+
+ </script>
+
+
+</body>
+</html>
\ No newline at end of file
diff --git a/test/opt.html b/test/opt.html
new file mode 100644
index 0000000..a0abcd5
--- /dev/null
+++ b/test/opt.html
@@ -0,0 +1,25 @@
+<html>
+<head>
+ <meta charset="utf-8">
+ <title>Mocha Tests</title>
+ <link rel="stylesheet" href="../node_modules/mocha/mocha.css" />
+</head>
+<body><div id="mocha"></div>
+ <script src="../node_modules/mocha/mocha.js"></script>
+ <script src="../node_modules/chai/chai.js"></script>
+ <script src="testData.js"></script>
+ <script src="../dist/proj4.js"></script>
+ <script src="test.js"></script>
+ <script>
+ mocha.setup({
+ ui: "bdd",
+ globals: ["console"],
+ timeout: 300000,
+ ignoreLeaks: true
+ });
+ startTests(chai,proj4,testPoints);
+ if (window.mochaPhantomJS) { window.mochaPhantomJS.run(); }
+ else { window.mocha.run(); }
+ </script>
+</body>
+</html>
\ No newline at end of file
diff --git a/test/package.json.js b/test/package.json.js
new file mode 100644
index 0000000..b82c0d2
--- /dev/null
+++ b/test/package.json.js
@@ -0,0 +1 @@
+define({version : "curl is dumb"});
\ No newline at end of file
diff --git a/test/test.js b/test/test.js
new file mode 100644
index 0000000..ec65453
--- /dev/null
+++ b/test/test.js
@@ -0,0 +1,242 @@
+// You can do this in the grunt config for each mocha task, see the `options` config
+
+
+// Start the main app logic.
+
+function startTests(chai, proj4, testPoints) {
+
+
+ var assert = chai.assert;
+ proj4.defs([
+ ["EPSG:102018", "+proj=gnom +lat_0=90 +lon_0=0 +x_0=6300000 +y_0=6300000 +ellps=WGS84 +datum=WGS84 +units=m +no_defs"],
+ ["testmerc", "+proj=merc +lon_0=5.937 +lat_ts=45.027 +ellps=sphere +datum=none"],
+ ["testmerc2", "+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +units=m +k=1.0 +nadgrids=@null +no_defs"]
+ ]);
+ proj4.defs('esriOnline', 'PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator_Auxiliary_Sphere"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],PARAMETER["Auxiliary_Sphere_Type",0.0],UNIT["Meter",1.0]]');
+
+ describe('proj2proj', function() {
+ it('should work transforming from one projection to another', function() {
+ var sweref99tm = '+proj=utm +zone=33 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs';
+ var rt90 = '+lon_0=15.808277777799999 +lat_0=0.0 +k=1.0 +x_0=1500000.0 +y_0=0.0 +proj=tmerc +ellps=bessel +units=m +towgs84=414.1,41.3,603.1,-0.855,2.141,-7.023,0 +no_defs';
+ var rslt = proj4(sweref99tm, rt90).forward([319180, 6399862]);
+ assert.closeTo(rslt[0], 1271137.927154, 0.000001);
+ assert.closeTo(rslt[1], 6404230.291456, 0.000001);
+ });
+ it('should work with a proj object', function() {
+ var sweref99tm = proj4('+proj=utm +zone=33 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs');
+ var rt90 = proj4('+lon_0=15.808277777799999 +lat_0=0.0 +k=1.0 +x_0=1500000.0 +y_0=0.0 +proj=tmerc +ellps=bessel +units=m +towgs84=414.1,41.3,603.1,-0.855,2.141,-7.023,0 +no_defs');
+ var rslt = proj4(sweref99tm, rt90).forward([319180, 6399862]);
+ assert.closeTo(rslt[0], 1271137.927154, 0.000001);
+ assert.closeTo(rslt[1], 6404230.291456, 0.000001);
+ });
+ });
+ describe('proj4', function() {
+ describe('core', function() {
+ testPoints.forEach(function(testPoint) {
+ describe(testPoint.code, function() {
+ var xyAcc = 2,
+ llAcc = 6;
+ if ('acc' in testPoint) {
+ if ('xy' in testPoint.acc) {
+ xyAcc = testPoint.acc.xy;
+ }
+ if ('ll' in testPoint.acc) {
+ llAcc = testPoint.acc.ll;
+ }
+ }
+ var xyEPSLN = Math.pow(10, - 1 * xyAcc);
+ var llEPSLN = Math.pow(10, - 1 * llAcc);
+ describe('traditional', function() {
+ it('should work with forwards', function() {
+ var proj = new proj4.Proj(testPoint.code);
+ var xy = proj4.transform(proj4.WGS84, proj, proj4.toPoint(testPoint.ll));
+ assert.closeTo(xy.x, testPoint.xy[0], xyEPSLN, 'x is close');
+ assert.closeTo(xy.y, testPoint.xy[1], xyEPSLN, 'y is close');
+ });
+ it('should work with backwards', function() {
+ var proj = new proj4.Proj(testPoint.code);
+ var ll = proj4.transform(proj, proj4.WGS84, proj4.toPoint(testPoint.xy));
+ assert.closeTo(ll.x, testPoint.ll[0], llEPSLN, 'lng is close');
+ assert.closeTo(ll.y, testPoint.ll[1], llEPSLN, 'lat is close');
+ });
+ });
+ describe('new method 2 param', function() {
+ it('shortcut method should work with an array', function() {
+ var xy = proj4(testPoint.code, testPoint.ll);
+ assert.closeTo(xy[0], testPoint.xy[0], xyEPSLN, 'x is close');
+ assert.closeTo(xy[1], testPoint.xy[1], xyEPSLN, 'y is close');
+ });
+ it('shortcut method should work with an object', function() {
+ var pt = {
+ x: testPoint.ll[0],
+ y: testPoint.ll[1]
+ };
+ var xy = proj4(testPoint.code, pt);
+ assert.closeTo(xy.x, testPoint.xy[0], xyEPSLN, 'x is close');
+ assert.closeTo(xy.y, testPoint.xy[1], xyEPSLN, 'y is close');
+ });
+ it('shortcut method should work with a point object', function() {
+ var pt = proj4.toPoint(testPoint.ll);
+ var xy = proj4(testPoint.code, pt);
+ assert.closeTo(xy.x, testPoint.xy[0], xyEPSLN, 'x is close');
+ assert.closeTo(xy.y, testPoint.xy[1], xyEPSLN, 'y is close');
+ });
+ });
+ describe('new method 3 param', function() {
+ it('shortcut method should work with an array', function() {
+ var xy = proj4(proj4.WGS84, testPoint.code, testPoint.ll);
+ assert.closeTo(xy[0], testPoint.xy[0], xyEPSLN, 'x is close');
+ assert.closeTo(xy[1], testPoint.xy[1], xyEPSLN, 'y is close');
+ });
+ it('shortcut method should work with an object', function() {
+ var pt = {
+ x: testPoint.ll[0],
+ y: testPoint.ll[1]
+ };
+ var xy = proj4(proj4.WGS84, testPoint.code, pt);
+ assert.closeTo(xy.x, testPoint.xy[0], xyEPSLN, 'x is close');
+ assert.closeTo(xy.y, testPoint.xy[1], xyEPSLN, 'y is close');
+ });
+ it('shortcut method should work with a point object', function() {
+ var pt = proj4.toPoint(testPoint.ll);
+ var xy = proj4(proj4.WGS84, testPoint.code, pt);
+ assert.closeTo(xy.x, testPoint.xy[0], xyEPSLN, 'x is close');
+ assert.closeTo(xy.y, testPoint.xy[1], xyEPSLN, 'y is close');
+ });
+ });
+ describe('new method 3 param other way', function() {
+ it('shortcut method should work with an array', function() {
+ var ll = proj4(testPoint.code, proj4.WGS84, testPoint.xy);
+ assert.closeTo(ll[0], testPoint.ll[0], llEPSLN, 'x is close');
+ assert.closeTo(ll[1], testPoint.ll[1], llEPSLN, 'y is close');
+ });
+ it('shortcut method should work with an object', function() {
+ var pt = {
+ x: testPoint.xy[0],
+ y: testPoint.xy[1]
+ };
+ var ll = proj4(testPoint.code, proj4.WGS84, pt);
+ assert.closeTo(ll.x, testPoint.ll[0], llEPSLN, 'x is close');
+ assert.closeTo(ll.y, testPoint.ll[1], llEPSLN, 'y is close');
+ });
+ it('shortcut method should work with a point object', function() {
+ var pt = proj4.toPoint(testPoint.xy);
+ var ll = proj4(testPoint.code, proj4.WGS84, pt);
+ assert.closeTo(ll.x, testPoint.ll[0], llEPSLN, 'x is close');
+ assert.closeTo(ll.y, testPoint.ll[1], llEPSLN, 'y is close');
+ });
+ });
+ describe('1 param', function() {
+ it('forwards', function() {
+ var xy = proj4(testPoint.code).forward(testPoint.ll);
+ assert.closeTo(xy[0], testPoint.xy[0], xyEPSLN, 'x is close');
+ assert.closeTo(xy[1], testPoint.xy[1], xyEPSLN, 'y is close');
+ });
+ it('inverse', function() {
+ var ll = proj4(testPoint.code).inverse(testPoint.xy);
+ assert.closeTo(ll[0], testPoint.ll[0], llEPSLN, 'x is close');
+ assert.closeTo(ll[1], testPoint.ll[1], llEPSLN, 'y is close');
+ });
+ });
+ describe('proj object', function() {
+ it('should work with a 2 element array', function() {
+ var xy = proj4(new proj4.Proj(testPoint.code), testPoint.ll);
+ assert.closeTo(xy[0], testPoint.xy[0], xyEPSLN, 'x is close');
+ assert.closeTo(xy[1], testPoint.xy[1], xyEPSLN, 'y is close');
+ });
+ it('should work on element', function() {
+ var xy = proj4(new proj4.Proj(testPoint.code)).forward(testPoint.ll);
+ assert.closeTo(xy[0], testPoint.xy[0], xyEPSLN, 'x is close');
+ assert.closeTo(xy[1], testPoint.xy[1], xyEPSLN, 'y is close');
+ });
+ it('should work 3 element ponit object', function() {
+ var pt = proj4.toPoint(testPoint.xy);
+ var ll = proj4(new proj4.Proj(testPoint.code), proj4.WGS84, pt);
+ assert.closeTo(ll.x, testPoint.ll[0], llEPSLN, 'x is close');
+ assert.closeTo(ll.y, testPoint.ll[1], llEPSLN, 'y is close');
+ });
+ });
+ });
+ });
+ });
+ describe('defs', function() {
+ assert.equal(proj4.defs('testmerc'), proj4.defs['testmerc']);
+ proj4.defs('foo', '+proj=merc +lon_0=5.937 +lat_ts=45.027 +ellps=sphere +datum=none');
+ assert.typeOf(proj4.defs['foo'], 'object');
+ proj4.defs('urn:x-ogc:def:crs:EPSG:4326', proj4.defs('EPSG:4326'));
+ assert.strictEqual(proj4.defs['urn:x-ogc:def:crs:EPSG:4326'], proj4.defs['EPSG:4326']);
+ });
+ describe('errors', function() {
+ it('should throw an error for an unknown ref', function() {
+ assert.throws(function() {
+ new proj4.Proj('fake one');
+ }, 'fake one', 'should work');
+ });
+ });
+ describe('utility', function() {
+ it('should have MGRS available in the proj4.util namespace', function() {
+ assert.typeOf(proj4.mgrs, "object", "MGRS available in the proj4.util namespace");
+ });
+ it('should have fromMGRS method added to proj4.Point prototype', function() {
+ assert.typeOf(proj4.Point.fromMGRS, "function", "fromMGRS method added to proj4.Point prototype");
+ });
+ it('should have toMGRS method added to proj4.Point prototype', function() {
+ assert.typeOf(proj4.Point.prototype.toMGRS, "function", "toMGRS method added to proj4.Point prototype");
+ });
+
+ describe('First MGRS set', function() {
+ var mgrs = "33UXP04";
+ var point = proj4.Point.fromMGRS(mgrs);
+ it('Longitude of point from MGRS correct.', function() {
+ assert.equal(point.x.toPrecision(7), "16.41450", "Longitude of point from MGRS correct.");
+ });
+ it('Latitude of point from MGRS correct.', function() {
+ assert.equal(point.y.toPrecision(7), "48.24949", "Latitude of point from MGRS correct.");
+ });
+ it('MGRS reference with highest accuracy correct.', function() {
+ assert.equal(point.toMGRS(), "33UXP0500444998", "MGRS reference with highest accuracy correct.");
+ });
+ it('MGRS reference with 1-digit accuracy correct.', function() {
+ assert.equal(point.toMGRS(1), mgrs, "MGRS reference with 1-digit accuracy correct.");
+ });
+ });
+ describe('Second MGRS set', function() {
+ var mgrs = "24XWT783908"; // near UTM zone border, so there are two ways to reference this
+ var point = proj4.Point.fromMGRS(mgrs);
+ it("Longitude of point from MGRS correct.", function() {
+ assert.equal(point.x.toPrecision(7), "-32.66433", "Longitude of point from MGRS correct.");
+ });
+ it("Latitude of point from MGRS correct.", function() {
+ assert.equal(point.y.toPrecision(7), "83.62778", "Latitude of point from MGRS correct.");
+ });
+ it("MGRS reference with 3-digit accuracy correct.", function() {
+ assert.equal(point.toMGRS(3), "25XEN041865", "MGRS reference with 3-digit accuracy correct.");
+ });
+ });
+ describe('Defs and Datum definition', function() {
+ proj4.defs("EPSG:5514", "+proj=krovak +lat_0=49.5 +lon_0=24.83333333333333 +alpha=30.28813972222222 +k=0.9999 +x_0=0 +y_0=0 +ellps=bessel +pm=greenwich +units=m +no_defs +towgs84=570.8,85.7,462.8,4.998,1.587,5.261,3.56");
+ var point = proj4.transform(proj4.Proj("WGS84"), proj4.Proj("EPSG:5514"),
+ proj4.toPoint([12.806988, 49.452262]));
+ it("Longitude of point from WGS84 correct.", function() {
+ assert.equal(point.x.toPrecision(8), "-868208.61", "Longitude of point from WGS84 correct.");
+ });
+ it("Latitude of point from WGS84 correct.", function() {
+ assert.equal(point.y.toPrecision(9), "-1095793.64", "Latitude of point from WGS84 correct.");
+ });
+ var point2 = proj4.transform(proj4.Proj("WGS84"), proj4.Proj("EPSG:5514"),
+ proj4.toPoint([12.806988, 49.452262]));
+ it("Longitude of point from WGS84 with second call for EPSG:5514 correct.", function() {
+ assert.equal(point2.x.toPrecision(8), "-868208.61", "Longitude of point from WGS84 correct.");
+ });
+ it("Latitude of point from WGS84 with second call for EPSG:5514 correct.", function() {
+ assert.equal(point2.y.toPrecision(9), "-1095793.64", "Latitude of point from WGS84 correct.");
+ });
+ });
+ });
+ });
+}
+if(typeof process !== 'undefined'&&process.toString() === '[object process]'){
+ (function(){
+ startTests(require('chai'), require('../lib'), require('./testData'));
+ })();
+}
diff --git a/test/testData.js b/test/testData.js
new file mode 100644
index 0000000..1069859
--- /dev/null
+++ b/test/testData.js
@@ -0,0 +1,306 @@
+var testPoints = [
+ {code: 'testmerc',
+ xy: [-45007.0787624, 4151725.59875],
+ ll: [5.364315,46.623154]
+ },
+ {code: 'testmerc2',
+ xy: [4156404,7480076.5],
+ ll: [37.33761240175515, 55.60447049026976]
+ },
+ {code: 'PROJCS["CH1903 / LV03",GEOGCS["CH1903",DATUM["D_CH1903",SPHEROID["Bessel_1841",6377397.155,299.1528128]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Hotine_Oblique_Mercator_Azimuth_Center"],PARAMETER["latitude_of_center",46.95240555555556],PARAMETER["longitude_of_center",7.439583333333333],PARAMETER["azimuth",90],PARAMETER["scale_factor",1],PARAMETER["false_easting",600000],PARAMETER["false_northing",200000],UNIT["Meter",1]]',
+ xy: [660389.4751110513, 185731.68482649108],
+ ll: [8.23, 46.82],
+ acc:{
+ xy:0.1
+ }
+ },
+ {code: 'PROJCS["CH1903 / LV03",GEOGCS["CH1903",DATUM["CH1903",SPHEROID["Bessel 1841",6377397.155,299.1528128,AUTHORITY["EPSG","7004"]],TOWGS84[674.374,15.056,405.346,0,0,0,0],AUTHORITY["EPSG","6149"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4149"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],PROJECTION["Hotine_Oblique_Mercator"],PARAMETER["latitude_of_center",46.95240555555556],PARAMETER["longitude_of_ce [...]
+ xy: [660389.4751110513, 185731.68482649108],
+ ll: [8.23, 46.82],
+ acc:{
+ xy:0.1
+ }
+ },
+ {code: 'PROJCS["NAD83 / Massachusetts Mainland",GEOGCS["NAD83",DATUM["North_American_Datum_1983",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","6269"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4269"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["standard_parallel_1",42.68333333333333],PARAMETER["standard_parallel_2", [...]
+ xy: [ 231394.84,902621.11],
+ ll: [-71.11881762742996,42.37346263960867]
+ },
+ {code: 'PROJCS["NAD83 / Massachusetts Mainland",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137,298.257222101]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["standard_parallel_1",42.68333333333333],PARAMETER["standard_parallel_2",41.71666666666667],PARAMETER["latitude_of_origin",41],PARAMETER["central_meridian",-71.5],PARAMETER["false_easting",200000],PARAMETER["false_northing",7500 [...]
+ xy: [ 231394.84,902621.11],
+ ll: [-71.11881762742996,42.37346263960867]
+ },
+ {code:'["PROJCS","NAD83 / Massachusetts Mainland", GEOGCS["NAD83", DATUM["North American Datum 1983", SPHEROID["GRS 1980", 6378137.0, 298.257222101, AUTHORITY["EPSG","7019"]], TOWGS84[0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0], AUTHORITY["EPSG","6269"]], PRIMEM["Greenwich", 0.0, AUTHORITY["EPSG","8901"]], UNIT["degree", 0.017453292519943295], AXIS["Geodetic longitude", EAST], AXIS["Geodetic latitude", NORTH], AUTHORITY["EPSG","4269"]], PROJECTION["Lambert_Conformal_Conic_2SP", AUTHORITY["EPSG" [...]
+ xy: [ 231394.84,902621.11],
+ ll: [-71.11881762742996,42.37346263960867]
+ },
+ {code: 'PROJCS["Asia_North_Equidistant_Conic",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Equidistant_Conic"],PARAMETER["False_Easting",0],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",95],PARAMETER["Standard_Parallel_1",15],PARAMETER["Standard_Parallel_2",65],PARAMETER["Latitude_Of_Origin",30],UNIT["Meter",1]]',
+ xy: [88280.59904432714, 111340.90165417176],
+ ll: [96,31]
+ },
+ {code: 'PROJCS["Asia_North_Equidistant_Conic",GEOGCS["GCS_WGS_1984",DATUM["WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Equidistant_Conic"],PARAMETER["False_Easting",0],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",95],PARAMETER["Standard_Parallel_1",15],PARAMETER["Standard_Parallel_2",65],PARAMETER["Latitude_Of_Origin",30],UNIT["Meter",1],AUTHORITY["EPSG","102026"]]',
+ xy: [88280.59904432714, 111340.90165417176],
+ ll: [96,31]
+ },
+ {code: 'PROJCS["World_Sinusoidal",GEOGCS["GCS_WGS_1984",DATUM["WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Sinusoidal"],PARAMETER["False_Easting",0],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",0],UNIT["Meter",1],AUTHORITY["EPSG","54008"]]',
+ xy: [738509.49,5874620.38],
+ ll: [11.0, 53.0]
+ },
+ {code: 'PROJCS["World_Sinusoidal",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Sinusoidal"],PARAMETER["False_Easting",0],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",0],UNIT["Meter",1]]',
+ xy: [738509.49,5874620.38],
+ ll: [11.0, 53.0]
+ },
+ {code: 'PROJCS["ETRS89 / ETRS-LAEA",GEOGCS["ETRS89",DATUM["D_ETRS_1989",SPHEROID["GRS_1980",6378137,298.257222101]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Lambert_Azimuthal_Equal_Area"],PARAMETER["latitude_of_origin",52],PARAMETER["central_meridian",10],PARAMETER["false_easting",4321000],PARAMETER["false_northing",3210000],UNIT["Meter",1]]',
+ xy: [4388138.60, 3321736.46],
+ ll: [11.0, 53.0]
+ },
+ {code: 'PROJCS["ETRS89 / ETRS-LAEA",GEOGCS["ETRS89",DATUM["European_Terrestrial_Reference_System_1989",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","6258"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4258"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],PROJECTION["Lambert_Azimuthal_Equal_Area"],PARAMETER["latitude_of_center",52],PARAMETER["longitude_of_center",10],PARAM [...]
+ xy: [4388138.60, 3321736.46],
+ ll: [11.0, 53.0]
+ },
+ {code: 'EPSG:102018',
+ xy: [350577.5930806119, 4705857.070634324],
+ ll: [-75,46]
+ }, {code: '+proj=gnom +lat_0=90 +lon_0=0 +x_0=6300000 +y_0=6300000 +ellps=WGS84 +datum=WGS84 +units=m +no_defs',
+ xy: [350577.5930806119, 4705857.070634324],
+ ll: [-75,46]
+ },
+ {code: 'PROJCS["NAD83(CSRS) / UTM zone 17N",GEOGCS["NAD83(CSRS)",DATUM["D_North_American_1983_CSRS98",SPHEROID["GRS_1980",6378137,298.257222101]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-81],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["Meter",1]]',
+ xy: [411461.807497, 4700123.744402],
+ ll: [-82.07666015625, 42.448388671875]
+ },{code: 'PROJCS["NAD83(CSRS) / UTM zone 17N",GEOGCS["NAD83(CSRS)",DATUM["NAD83_Canadian_Spatial_Reference_System",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","6140"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4617"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-81],PARAM [...]
+ xy: [411461.807497, 4700123.744402],
+ ll: [-82.07666015625, 42.448388671875]
+ },
+ {code: 'PROJCS["World_Mollweide",GEOGCS["GCS_WGS_1984",DATUM["WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Mollweide"],PARAMETER["False_Easting",0],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",0],UNIT["Meter",1],AUTHORITY["EPSG","54009"]]',
+ xy: [3891383.58309223, 6876758.9933288],
+ ll: [60,60]
+ },
+ {code: 'PROJCS["World_Mollweide",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Mollweide"],PARAMETER["False_Easting",0],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",0],UNIT["Meter",1]]',
+ xy: [3891383.58309223, 6876758.9933288],
+ ll: [60,60]
+ },
+ {
+ code:'PROJCS["NAD83 / BC Albers",GEOGCS["NAD83",DATUM["North_American_Datum_1983",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","6269"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4269"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],PROJECTION["Albers_Conic_Equal_Area"],PARAMETER["standard_parallel_1",50],PARAMETER["standard_parallel_2",58.5],PARAMETER["latitude_of_cen [...]
+ ll:[-126.54, 54.15],
+ xy:[964813.103719, 1016486.305862]
+ }, {
+ code:'PROJCS["NAD83 / BC Albers",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137,298.257222101]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Albers"],PARAMETER["standard_parallel_1",50],PARAMETER["standard_parallel_2",58.5],PARAMETER["latitude_of_origin",45],PARAMETER["central_meridian",-126],PARAMETER["false_easting",1000000],PARAMETER["false_northing",0],UNIT["Meter",1]]',
+ ll:[-126.54, 54.15],
+ xy:[964813.103719, 1016486.305862]
+ },
+ {
+ code:'PROJCS["North_Pole_Azimuthal_Equidistant",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Azimuthal_Equidistant"],PARAMETER["False_Easting",0],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",0],PARAMETER["Latitude_Of_Origin",90],UNIT["Meter",1]]',
+ ll:[50.977303830208, 30.915260093747],
+ xy:[5112279.911077, -4143196.76625]
+ },
+ {
+ code:'PROJCS["North_Pole_Azimuthal_Equidistant",GEOGCS["GCS_WGS_1984",DATUM["WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Azimuthal_Equidistant"],PARAMETER["False_Easting",0],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",0],PARAMETER["Latitude_Of_Origin",90],UNIT["Meter",1],AUTHORITY["EPSG","102016"]]',
+ ll:[50.977303830208, 30.915260093747],
+ xy:[5112279.911077, -4143196.76625]
+ },
+ {
+ code:'PROJCS["Mount Dillon / Tobago Grid",GEOGCS["Mount Dillon",DATUM["Mount_Dillon",SPHEROID["Clarke 1858",6378293.645208759,294.2606763692654,AUTHORITY["EPSG","7007"]],AUTHORITY["EPSG","6157"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4157"]],UNIT["Clarke\'s link",0.201166195164,AUTHORITY["EPSG","9039"]],PROJECTION["Cassini_Soldner"],PARAMETER["latitude_of_origin",11.25217861111111],PARAMETER["centr [...]
+ ll:[-60.676753018, 11.2487234308],
+ xy:[192524.3061766178, 178100.2740019509],
+ acc:{
+ ll:1,
+ xy:-4
+ }
+ }, {
+ code:'PROJCS["Mount Dillon / Tobago Grid",GEOGCS["Mount Dillon",DATUM["D_Mount_Dillon",SPHEROID["Clarke_1858",6378293.645208759,294.2606763692654]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Cassini"],PARAMETER["latitude_of_origin",11.25217861111111],PARAMETER["central_meridian",-60.68600888888889],PARAMETER["false_easting",187500],PARAMETER["false_northing",180000],UNIT["Clarke\'s link",0.201166195164]]',
+ ll:[-60.676753018, 11.2487234308],
+ xy:[192524.3061766178, 178100.2740019509],
+ acc:{
+ ll:1,
+ xy:-4
+ }
+ },
+ /*{
+ code:'EPSG:3975',
+ ll:[-9.764450683, 25.751953],
+ xy:[-942135.525095996, 3178441.8667094777]
+ },*/
+ {
+ code:'PROJCS["World Equidistant Cylindrical (Sphere)",GEOGCS["Unspecified datum based upon the GRS 1980 Authalic Sphere",DATUM["Not_specified_based_on_GRS_1980_Authalic_Sphere",SPHEROID["GRS 1980 Authalic Sphere",6371007,0,AUTHORITY["EPSG","7048"]],AUTHORITY["EPSG","6047"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4047"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],PROJECTION["Equirectangular"],PARAMETER [...]
+ ll:[-1.7539371169976, 12.632997701986],
+ xy:[-195029.12334755991, 1395621.9368162225],
+ acc:{
+ ll:2
+ }
+ }, {
+ code:'PROJCS["World Equidistant Cylindrical (Sphere)",GEOGCS["Unspecified datum based upon the GRS 1980 Authalic Sphere",DATUM["D_",SPHEROID["GRS_1980_Authalic_Sphere",6371007,0]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Equidistant_Cylindrical"],PARAMETER["central_meridian",0],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["Meter",1]]',
+ ll:[-1.7539371169976, 12.632997701986],
+ xy:[-195029.12334755991, 1395621.9368162225],
+ acc:{
+ ll:2
+ }
+ },
+ {
+ code:'PROJCS["Segara / NEIEZ",GEOGCS["Segara",DATUM["Gunung_Segara",SPHEROID["Bessel 1841",6377397.155,299.1528128,AUTHORITY["EPSG","7004"]],AUTHORITY["EPSG","6613"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4613"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],PROJECTION["Mercator_1SP"],PARAMETER["central_meridian",110],PARAMETER["scale_factor",0.997],PARAMETER["false_easting",3900000],PARAMETER["false_no [...]
+ ll:[116.65547897884308 , -0.6595605286983485],
+ xy:[4638523.040740433, 827245.2586932715]
+ }, {
+ code:'PROJCS["Segara / NEIEZ",GEOGCS["Segara",DATUM["D_Gunung_Segara",SPHEROID["Bessel_1841",6377397.155,299.1528128]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Mercator"],PARAMETER["central_meridian",110],PARAMETER["scale_factor",0.997],PARAMETER["false_easting",3900000],PARAMETER["false_northing",900000],UNIT["Meter",1]]',
+ ll:[116.65547897884308 , -0.6595605286983485],
+ xy:[4638523.040740433, 827245.2586932715]
+ },
+ {
+ code:'PROJCS["Beduaram / TM 13 NE",GEOGCS["Beduaram",DATUM["Beduaram",SPHEROID["Clarke 1880 (IGN)",6378249.2,293.4660212936269,AUTHORITY["EPSG","7011"]],TOWGS84[-106,-87,188,0,0,0,0],AUTHORITY["EPSG","6213"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4213"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",13],PARA [...]
+ ll:[5, 25],
+ xy:[-308919.1462828873, 2788738.252386554],
+ acc:{
+ ll:5
+ }
+ },
+ {
+ code:'PROJCS["Beduaram / TM 13 NE",GEOGCS["Beduaram",DATUM["D_Beduaram",SPHEROID["Clarke_1880_IGN",6378249.2,293.4660212936269]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",13],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["Meter",1]]',
+ ll:[5, 25],
+ xy:[-308919.1462828873, 2788738.252386554],
+ acc:{
+ ll:5
+ }
+ }
+ ,{
+ code:'PROJCS["S-JTSK (Ferro) / Krovak",GEOGCS["S-JTSK (Ferro)",DATUM["S_JTSK_Ferro",SPHEROID["Bessel 1841",6377397.155,299.1528128,AUTHORITY["EPSG","7004"]],AUTHORITY["EPSG","6818"]],PRIMEM["Ferro",-17.66666666666667,AUTHORITY["EPSG","8909"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4818"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],PROJECTION["Krovak"],PARAMETER["latitude_of_center",49.5],PARAMETER["longitude_of_center",42.5],PARAMETER["azimuth",30 [...]
+ ll:[17.323583231075897, 49.39440725405376],
+ xy:[-544115.474379, -1144058.330762]
+ },{
+ code:'PROJCS["S-JTSK (Ferro) / Krovak",GEOGCS["S-JTSK (Ferro)",DATUM["D_S_JTSK",SPHEROID["Bessel_1841",6377397.155,299.1528128]],PRIMEM["Ferro",-17.66666666666667],UNIT["Degree",0.017453292519943295]],PROJECTION["Krovak"],PARAMETER["latitude_of_center",49.5],PARAMETER["longitude_of_center",42.5],PARAMETER["azimuth",30.28813972222222],PARAMETER["pseudo_standard_parallel_1",78.5],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["Meter",1]]',
+ ll:[17.323583231075897, 49.39440725405376],
+ xy:[-544115.474379, -1144058.330762]
+ },{
+ code:'PROJCS["Sphere_Miller_Cylindrical",GEOGCS["GCS_Sphere",DATUM["D_Sphere",SPHEROID["Sphere",6371000,0]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Miller_Cylindrical"],PARAMETER["False_Easting",0],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",0],UNIT["Meter",1]]',
+ ll:[-1.3973289073953, 12.649176474268513 ],
+ xy:[-155375.88535614178, 1404635.2633403721],
+ acc:{
+ ll:3
+ }
+ },{
+ code:'PROJCS["Sphere_Miller_Cylindrical",GEOGCS["GCS_Sphere",DATUM["Not_specified_based_on_Authalic_Sphere",SPHEROID["Sphere",6371000,0]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Miller_Cylindrical"],PARAMETER["False_Easting",0],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",0],UNIT["Meter",1],AUTHORITY["EPSG","53003"]]',
+ ll:[-1.3973289073953, 12.649176474268513 ],
+ xy:[-155375.88535614178, 1404635.2633403721],
+ acc:{
+ ll:3
+ }
+ },{
+ code:'PROJCS["NZGD49 / New Zealand Map Grid",GEOGCS["NZGD49",DATUM["D_New_Zealand_1949",SPHEROID["International_1924",6378388,297]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["New_Zealand_Map_Grid"],PARAMETER["latitude_of_origin",-41],PARAMETER["central_meridian",173],PARAMETER["false_easting",2510000],PARAMETER["false_northing",6023150],UNIT["Meter",1]]',
+ ll:[172.465, -40.7],
+ xy:[2464770.343667, 6056137.861919]
+ },{
+ code:'PROJCS["NZGD49 / New Zealand Map Grid",GEOGCS["NZGD49",DATUM["New_Zealand_Geodetic_Datum_1949",SPHEROID["International 1924",6378388,297,AUTHORITY["EPSG","7022"]],TOWGS84[59.47,-5.04,187.44,0.47,-0.1,1.024,-4.5993],AUTHORITY["EPSG","6272"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4272"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],PROJECTION["New_Zealand_Map_Grid"],PARAMETER["latitude_of_origin",- [...]
+ ll:[172.465, -40.7],
+ xy:[2464770.343667, 6056137.861919]
+ },{
+ code:'PROJCS["Rassadiran / Nakhl e Taqi",GEOGCS["Rassadiran",DATUM["Rassadiran",SPHEROID["International 1924",6378388,297,AUTHORITY["EPSG","7022"]],TOWGS84[-133.63,-157.5,-158.62,0,0,0,0],AUTHORITY["EPSG","6153"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4153"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],PROJECTION["Hotine_Oblique_Mercator"],PARAMETER["latitude_of_center",27.51882880555555],PARAMETER["l [...]
+ ll:[52.6, 27.5],
+ xy:[658017.25458, 3043003.058818]
+ },{
+ code:'PROJCS["Rassadiran / Nakhl e Taqi",GEOGCS["Rassadiran",DATUM["D_Rassadiran",SPHEROID["International_1924",6378388,297]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Hotine_Oblique_Mercator_Azimuth_Natural_Origin"],PARAMETER["latitude_of_center",27.51882880555555],PARAMETER["longitude_of_center",52.60353916666667],PARAMETER["azimuth",0.5716611944444444],PARAMETER["rectified_grid_angle",0.5716611944444444],PARAMETER["scale_factor",0.999895934],PARAMETER[ [...]
+ ll:[52.6, 27.5],
+ xy:[658017.25458, 3043003.058818]
+ },{
+ code:'PROJCS["SAD69 / Brazil Polyconic",GEOGCS["SAD69",DATUM["D_South_American_1969",SPHEROID["GRS_1967_SAD69",6378160,298.25]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Polyconic"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-54],PARAMETER["false_easting",5000000],PARAMETER["false_northing",10000000],UNIT["Meter",1]]',
+ ll:[-49.221772553812, -0.34551739237581],
+ xy:[5531902.134932, 9961660.779347],
+ acc:{
+ ll:3,
+ xy:-2
+ }
+ },{
+ code:'PROJCS["SAD69 / Brazil Polyconic",GEOGCS["SAD69",DATUM["South_American_Datum_1969",SPHEROID["GRS 1967 (SAD69)",6378160,298.25,AUTHORITY["EPSG","7050"]],AUTHORITY["EPSG","6618"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4618"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],PROJECTION["Polyconic"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-54],PARAMETER["false_easting",5000000],PAR [...]
+ ll:[-49.221772553812, -0.34551739237581],
+ xy:[5531902.134932, 9961660.779347],
+ acc:{
+ ll:3,
+ xy:-2
+ }
+ },{
+ code:'PROJCS["WGS 84 / UPS North",GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4326"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],PROJECTION["Polar_Stereographic"],PARAMETER["latitude_of_origin",90],PARAMETER["central_meridian",0],PARAMETER["scale_factor",0.994],PARAMETER["false_easti [...]
+ ll:[0, 75],
+ xy:[2000000, 325449.806286]
+ },{
+ code:'PROJCS["WGS 84 / UPS North",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Stereographic_North_Pole"],PARAMETER["standard_parallel_1",90],PARAMETER["central_meridian",0],PARAMETER["scale_factor",0.994],PARAMETER["false_easting",2000000],PARAMETER["false_northing",2000000],UNIT["Meter",1]]',
+ ll:[0, 75],
+ xy:[2000000, 325449.806286]
+ },{
+ code:'PROJCS["NAD83(CSRS98) / New Brunswick Stereo (deprecated)",GEOGCS["NAD83(CSRS98)",DATUM["D_North_American_1983_CSRS98",SPHEROID["GRS_1980",6378137,298.257222101]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Stereographic_North_Pole"],PARAMETER["standard_parallel_1",46.5],PARAMETER["central_meridian",-66.5],PARAMETER["scale_factor",0.999912],PARAMETER["false_easting",2500000],PARAMETER["false_northing",7500000],UNIT["Meter",1]]',
+ ll:[-66.415, 46.34],
+ xy:[2506543.370459, 7482219.546176]
+ },{
+ code:'PROJCS["NAD83(CSRS98) / New Brunswick Stereo (deprecated)",GEOGCS["NAD83(CSRS98)",DATUM["NAD83_Canadian_Spatial_Reference_System",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6140"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9108"]],AUTHORITY["EPSG","4140"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],PROJECTION["Oblique_Stereographic"],PARAMETER["latitude_of_ori [...]
+ ll:[-66.415, 46.34],
+ xy:[2506543.370459, 7482219.546176]
+ },{
+ code:'PROJCS["Sphere_Van_der_Grinten_I",GEOGCS["GCS_Sphere",DATUM["D_Sphere",SPHEROID["Sphere",6371000,0]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Van_der_Grinten_I"],PARAMETER["False_Easting",0],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",0],UNIT["Meter",1]]',
+ ll:[-1.41160801956, 67.40891366748],
+ xy:[-125108.675828, 9016899.042114],
+ acc:{
+ ll:0,
+ xy:-5
+ }
+ },{
+ code:'PROJCS["Sphere_Van_der_Grinten_I",GEOGCS["GCS_Sphere",DATUM["Not_specified_based_on_Authalic_Sphere",SPHEROID["Sphere",6371000,0]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["VanDerGrinten"],PARAMETER["False_Easting",0],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",0],UNIT["Meter",1],AUTHORITY["EPSG","53029"]]',
+ ll:[-1.41160801956, 67.40891366748],
+ xy:[-125108.675828, 9016899.042114],
+ acc:{
+ ll:0,
+ xy:-5
+ }
+ },{
+ code:'PROJCS["NAD_1983_StatePlane_New_Jersey_FIPS_2900_Feet",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",492125.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-74.5],PARAMETER["Scale_Factor",0.9999],PARAMETER["Latitude_Of_Origin",38.83333333333334],UNIT["Foot_US",0.3048006096012192]]',
+ ll:[-74,41],
+ xy:[630128.205,789591.522]
+ },
+ {
+ code:'esriOnline',
+ ll:[-74,41],
+ xy:[-8237642.318702244, 5012341.663847514]
+ },{
+ code:"+proj=sinu +lon_0=0 +x_0=0 +y_0=0 +a=6371000 +b=6371000 +units=m +datum=none +no_defs",
+ xy: [ 736106.55, 5893331.11 ],
+ ll: [11.0, 53.0]
+ },
+ {
+ code:'PROJCS["Belge 1972 / Belgian Lambert 72",GEOGCS["Belge 1972",DATUM["Reseau_National_Belge_1972",SPHEROID["International 1924",6378388,297,AUTHORITY["EPSG","7022"]],TOWGS84[106.869,-52.2978,103.724,-0.33657,0.456955,-1.84218,1],AUTHORITY["EPSG","6313"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4313"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["st [...]
+ xy:[104588.196404, 193175.582367],
+ ll:[3.7186701465384533,51.04642936832842]
+ },
+ {
+ code:'PROJCS["Belge 1972 / Belgian Lambert 72",GEOGCS["Belge 1972",DATUM["D_Belge_1972",SPHEROID["International_1924",6378388,297]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["standard_parallel_1",51.16666723333333],PARAMETER["standard_parallel_2",49.8333339],PARAMETER["latitude_of_origin",90],PARAMETER["central_meridian",4.367486666666666],PARAMETER["false_easting",150000.013],PARAMETER["false_northing",5400088.438],UNI [...]
+ xy:[104588.196404, 193175.582367],
+ ll:[3.7186701465384533,51.04642936832842]
+ },
+ {
+ code:'+proj=lcc +lat_1=51.16666723333333 +lat_2=49.8333339 +lat_0=90 +lon_0=4.367486666666666 +x_0=150000.013 +y_0=5400088.438 +ellps=intl +towgs84=106.869,-52.2978,103.724,-0.33657,0.456955,-1.84218,1 +units=m +no_defs ',
+ xy:[104588.196404, 193175.582367],
+ ll:[3.7186701465384533,51.04642936832842]
+ },
+ {
+ code:"+proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 +x_0=400000 +y_0=-100000 +ellps=airy +datum=OSGB36 +units=m +no_defs",
+ ll:[-3.20078, 55.96056],
+ xy:[325132.0089586496, 674822.638235305]
+ },
+ {
+ code:"+proj=krovak +lat_0=49.5 +lon_0=24.83333333333333 +alpha=30.28813972222222 +k=0.9999 +x_0=0 +y_0=0 +ellps=bessel +pm=greenwich +units=m +no_defs +towgs84=570.8,85.7,462.8,4.998,1.587,5.261,3.56",
+ ll: [12.806988, 49.452262],
+ xy: [-868208.61, -1095793.64]
+ },
+ // check that coordinates at 180 and -180 deg. longitude don't wrap around
+ {
+ code: 'EPSG:3857',
+ ll: [-180, 0],
+ xy: [-20037508.342789, 0]
+ },
+ {
+ code: 'EPSG:3857',
+ ll: [180, 0],
+ xy: [20037508.342789, 0]
+ }
+];
+if(typeof module !== 'undefined'){
+ module.exports = testPoints;
+}else if(typeof define === 'function'){
+ define(function(){
+ return testPoints;
+ });
+}
--
Alioth's /usr/local/bin/git-commit-notice on /srv/git.debian.org/git/pkg-grass/proj4js.git
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