[prepair] 01/02: Imported Upstream version 0.7
Bas Couwenberg
sebastic at xs4all.nl
Sat Nov 22 20:55:31 UTC 2014
This is an automated email from the git hooks/post-receive script.
sebastic-guest pushed a commit to branch master
in repository prepair.
commit 2dab6bfcb6b6382dfffaaf61fa944c1cbdd18d71
Author: Bas Couwenberg <sebastic at xs4all.nl>
Date: Sat Nov 22 14:54:18 2014 +0100
Imported Upstream version 0.7
---
.gitignore | 20 +
CMakeLists.txt | 78 ++++
LICENSE.txt | 674 +++++++++++++++++++++++++++++++
PolygonRepair.cpp | 922 +++++++++++++++++++++++++++++++++++++++++++
PolygonRepair.h | 50 +++
README.md | 96 +++++
TriangleInfo.cpp | 66 ++++
TriangleInfo.h | 45 +++
data/CLC2006_180927.geojson | 8 +
data/CLC2006_2018418.geojson | 8 +
definitions.h | 84 ++++
icon.png | Bin 0 -> 16222 bytes
prepair.cpp | 214 ++++++++++
13 files changed, 2265 insertions(+)
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..d2f48d0
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,20 @@
+# Metadata
+.DS_Store
+
+# Subversion
+.svn
+
+# OS specific Makefile
+Makefile
+
+# Compiled sources
+*.o
+prepair
+
+# xcode project
+*.xcodeproj
+
+CMakeFiles
+cmake_install.cmake
+CMakeCache.txt
+libprepair.dylib
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..730e8d6
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,78 @@
+# Copyright (c) 2009-2013,
+# Ken Arroyo Ohori g.a.k.arroyoohori at tudelft.nl
+# Hugo Ledoux h.ledoux at tudelft.nl
+# Martijn Meijers b.m.meijers at tudelft.nl
+# All rights reserved.
+#
+# This file is part of prepair: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Licensees holding a valid commercial license may use this file in
+# accordance with the commercial license agreement provided with
+# the software.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+#
+
+project( prepair )
+
+cmake_minimum_required(VERSION 2.6.2)
+if("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" VERSION_GREATER 2.6)
+ if("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}.${CMAKE_PATCH_VERSION}" VERSION_GREATER 2.8.3)
+ cmake_policy(VERSION 2.8.4)
+ else()
+ cmake_policy(VERSION 2.6)
+ endif()
+endif()
+
+set( CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true )
+
+if ( COMMAND cmake_policy )
+ cmake_policy( SET CMP0003 NEW )
+endif()
+
+# CGAL
+find_package( CGAL QUIET COMPONENTS )
+
+if ( NOT CGAL_FOUND )
+ message(SEND_ERROR "prepair requires the CGAL library")
+ return()
+endif()
+
+# include helper file
+include( ${CGAL_USE_FILE} )
+
+# Boost
+find_package( Boost REQUIRED )
+
+if ( NOT Boost_FOUND )
+ message(SEND_ERROR "prepair requires the Boost library")
+ return()
+endif()
+
+# GDAL
+find_package( GDAL )
+
+if ( NOT GDAL_FOUND )
+ message(SEND_ERROR "prepair requires the GDAL library")
+endif()
+
+include_directories( ${GDAL_INCLUDE_DIR} )
+
+# Creating entries for target: prepair
+# ############################
+
+if ( AS_LIBRARY )
+ add_library( prepair SHARED TriangleInfo.cpp PolygonRepair.cpp )
+else()
+ add_executable( prepair TriangleInfo.cpp PolygonRepair.cpp prepair.cpp )
+endif()
+
+add_to_cached_list( CGAL_EXECUTABLE_TARGETS prepair )
+
+# Link to CGAL and third-party libraries
+target_link_libraries(prepair ${CGAL_LIBRARIES} ${CGAL_3RD_PARTY_LIBRARIES} ${GDAL_LIBRARY})
\ No newline at end of file
diff --git a/LICENSE.txt b/LICENSE.txt
new file mode 100644
index 0000000..94a9ed0
--- /dev/null
+++ b/LICENSE.txt
@@ -0,0 +1,674 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
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+software and other kinds of works.
+
+ The licenses for most software and other practical works are designed
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+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users. We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors. You can apply it to
+your programs, too.
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+possible use to the public, the best way to achieve this is to make it
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/PolygonRepair.cpp b/PolygonRepair.cpp
new file mode 100644
index 0000000..4aa948a
--- /dev/null
+++ b/PolygonRepair.cpp
@@ -0,0 +1,922 @@
+/*
+ Copyright (c) 2009-2013,
+ Ken Arroyo Ohori g.a.k.arroyoohori at tudelft.nl
+ Hugo Ledoux h.ledoux at tudelft.nl
+ Martijn Meijers b.m.meijers at tudelft.nl
+ All rights reserved.
+
+ // This file is part of prepair: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Licensees holding a valid commercial license may use this file in
+ accordance with the commercial license agreement provided with
+ the software.
+
+ This file is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#include "PolygonRepair.h"
+
+OGRMultiPolygon *PolygonRepair::repairOddEven(OGRGeometry *geometry, bool timeResults) {
+ triangulation.clear();
+ time_t thisTime, totalTime;
+ thisTime = time(NULL);
+ insertConstraints(triangulation, geometry);
+ totalTime = time(NULL)-thisTime;
+ if (timeResults) std::cout << "Triangulation: " << totalTime/60 << " minutes " << totalTime%60 << " seconds." << std::endl;
+ thisTime = time(NULL);
+ tagOddEven(triangulation);
+ totalTime = time(NULL)-thisTime;
+ if (timeResults) std::cout << "Tagging: " << totalTime/60 << " minutes " << totalTime%60 << " seconds." << std::endl;
+ thisTime = time(NULL);
+ OGRMultiPolygon *outPolygons = reconstruct(triangulation);
+ totalTime = time(NULL)-thisTime;
+ if (timeResults) std::cout << "Reconstruction: " << totalTime/60 << " minutes " << totalTime%60 << " seconds." << std::endl;
+ return outPolygons;
+}
+
+OGRMultiPolygon *PolygonRepair::repairPointSet(OGRGeometry *geometry, bool timeResults) {
+ triangulation.clear();
+ std::list<std::pair<bool, OGRMultiPolygon *> > repairedRings; // bool indicates if outer/inner are flipped
+
+ time_t thisTime, totalTime;
+ thisTime = time(NULL);
+ switch (geometry->getGeometryType()) {
+
+ case wkbLineString: {
+ repairedRings.push_back(std::pair<bool, OGRMultiPolygon *>(false, repairOddEven(geometry)));
+ break;
+ }
+
+ case wkbPolygon: {
+ OGRPolygon *polygon = static_cast<OGRPolygon *>(geometry);
+ if (polygon->getExteriorRing() != NULL) {
+ repairedRings.push_back(std::pair<bool, OGRMultiPolygon *>(false, repairOddEven(polygon->getExteriorRing())));
+ } for (int currentRing = 0; currentRing < polygon->getNumInteriorRings(); ++currentRing) {
+ repairedRings.push_back(std::pair<bool, OGRMultiPolygon *>(true, repairOddEven(polygon->getInteriorRing(currentRing))));
+ } break;
+ }
+
+ case wkbMultiPolygon: {
+ OGRMultiPolygon *multipolygon = static_cast<OGRMultiPolygon *>(geometry);
+ for (int currentPolygon = 0; currentPolygon < multipolygon->getNumGeometries(); ++currentPolygon) {
+ OGRPolygon *polygon = static_cast<OGRPolygon *>(multipolygon->getGeometryRef(currentPolygon));
+ if (polygon->getExteriorRing() != NULL) {
+ repairedRings.push_back(std::pair<bool, OGRMultiPolygon *>(false, repairOddEven(polygon->getExteriorRing())));
+ } for (int currentRing = 0; currentRing < polygon->getNumInteriorRings(); ++currentRing) {
+ repairedRings.push_back(std::pair<bool, OGRMultiPolygon *>(true, repairOddEven(polygon->getInteriorRing(currentRing))));
+ }
+ } break;
+ }
+
+ default:
+ std::cerr << "PolygonRepair::repairPointSet: Cannot understand input." << std::endl;
+ return new OGRMultiPolygon();
+ break;
+ } totalTime = time(NULL)-thisTime;
+ if (timeResults) std::cout << "Repairing individual rings: " << totalTime/60 << " minutes " << totalTime%60 << " seconds." << std::endl;
+
+ thisTime = time(NULL);
+ for (std::list<std::pair<bool, OGRMultiPolygon *> >::iterator currentMultipolygon = repairedRings.begin();
+ currentMultipolygon != repairedRings.end(); ++currentMultipolygon)
+ insertConstraints(triangulation, currentMultipolygon->second, false);
+ totalTime = time(NULL)-thisTime;
+ if (timeResults) std::cout << "Triangulation: " << totalTime/60 << " minutes " << totalTime%60 << " seconds." << std::endl;
+ thisTime = time(NULL);
+ tagPointSet(triangulation, repairedRings);
+ totalTime = time(NULL)-thisTime;
+ if (timeResults) std::cout << "Tagging: " << totalTime/60 << " minutes " << totalTime%60 << " seconds." << std::endl;
+ thisTime = time(NULL);
+ OGRMultiPolygon *outPolygons = reconstruct(triangulation);
+ totalTime = time(NULL)-thisTime;
+ if (timeResults) std::cout << "Reconstruction: " << totalTime/60 << " minutes " << totalTime%60 << " seconds." << std::endl;
+ return outPolygons;
+}
+
+void PolygonRepair::removeSmallPolygons(OGRMultiPolygon *outPolygons, double minArea) {
+ //std::cout << "Removing polygons smaller than " << minArea << " unit^2." << std::endl;
+ for (int currentPolygon = outPolygons->getNumGeometries()-1; currentPolygon >= 0; --currentPolygon) {
+ if (static_cast<OGRPolygon *>(outPolygons->getGeometryRef(currentPolygon))->get_Area() < minArea) {
+ outPolygons->removeGeometry(currentPolygon);
+ }
+ }
+}
+
+OGRMultiPolygon *PolygonRepair::isr(OGRGeometry *geometry, double tolerance) {
+
+ // Convert to multipolygon
+ OGRMultiPolygon *multipolygon = new OGRMultiPolygon();
+ switch (geometry->getGeometryType()) {
+ case wkbLineString: {
+ OGRLineString *oldRing = static_cast<OGRLineString *>(geometry);
+ OGRPolygon *polygon = new OGRPolygon();
+ OGRLinearRing *ring = new OGRLinearRing();
+ OGRPoint lastPoint, point;
+ for (int currentPoint = 0; currentPoint < oldRing->getNumPoints(); ++currentPoint) {
+ oldRing->getPoint(currentPoint, &point);
+ if (currentPoint > 0) {
+ if (!point.Equals(&lastPoint)) ring->addPoint(&point);
+ } lastPoint = point;
+ } polygon->addRingDirectly(ring);
+ multipolygon->addGeometryDirectly(polygon);
+ break;
+ }
+
+ case wkbPolygon: {
+ OGRPolygon *oldPolygon = static_cast<OGRPolygon *>(geometry);
+ OGRPolygon *polygon = new OGRPolygon();
+ OGRLinearRing *oldRing = oldPolygon->getExteriorRing();
+ OGRLinearRing *ring = new OGRLinearRing();
+ OGRPoint lastPoint, point;
+ for (int currentPoint = 0; currentPoint < oldRing->getNumPoints(); ++currentPoint) {
+ oldRing->getPoint(currentPoint, &point);
+ if (currentPoint > 0) {
+ if (!point.Equals(&lastPoint)) ring->addPoint(&point);
+ } lastPoint = point;
+ } polygon->addRingDirectly(ring);
+ for (int currentRing = 0; currentRing < oldPolygon->getNumInteriorRings(); ++currentRing) {
+ oldRing = oldPolygon->getInteriorRing(currentRing);
+ ring = new OGRLinearRing();
+ for (int currentPoint = 0; currentPoint < oldRing->getNumPoints(); ++currentPoint) {
+ oldRing->getPoint(currentPoint, &point);
+ if (currentPoint > 0) {
+ if (!point.Equals(&lastPoint)) ring->addPoint(&point);
+ } lastPoint = point;
+ } polygon->addRingDirectly(ring);
+ } multipolygon->addGeometryDirectly(polygon);
+ break;
+ }
+
+ case wkbMultiPolygon: {
+ OGRMultiPolygon *oldMultipolygon = static_cast<OGRMultiPolygon *>(geometry);
+ OGRPolygon *oldPolygon, *polygon;
+ OGRLinearRing *oldRing, *ring;
+ OGRPoint lastPoint, point;
+ for (int currentPolygon = 0; currentPolygon < oldMultipolygon->getNumGeometries(); ++currentPolygon) {
+ oldPolygon = static_cast<OGRPolygon *>(oldMultipolygon->getGeometryRef(currentPolygon));
+ polygon = new OGRPolygon();
+ oldRing = oldPolygon->getExteriorRing();
+ ring = new OGRLinearRing();
+ for (int currentPoint = 0; currentPoint < oldRing->getNumPoints(); ++currentPoint) {
+ oldRing->getPoint(currentPoint, &point);
+ if (currentPoint > 0) {
+ if (!point.Equals(&lastPoint)) ring->addPoint(&point);
+ } lastPoint = point;
+ } polygon->addRingDirectly(ring);
+ for (int currentRing = 0; currentRing < oldPolygon->getNumInteriorRings(); ++currentRing) {
+ oldRing = oldPolygon->getInteriorRing(currentRing);
+ ring = new OGRLinearRing();
+ for (int currentPoint = 0; currentPoint < oldRing->getNumPoints(); ++currentPoint) {
+ oldRing->getPoint(currentPoint, &point);
+ if (currentPoint > 0) {
+ if (!point.Equals(&lastPoint)) ring->addPoint(&point);
+ } lastPoint = point;
+ } polygon->addRingDirectly(ring);
+ } multipolygon->addGeometryDirectly(polygon);
+ } break;
+ }
+
+ default:
+ std::cerr << "PolygonRepair::isr: Cannot understand input." << std::endl;
+ return new OGRMultiPolygon();
+ break;
+ } multipolygon->closeRings();
+
+ // Put all line segments in a list (in order)
+ // TODO: Only do point location once for segment.
+ std::list<Segment> inputSegments;
+ for (int currentPolygon = 0; currentPolygon < multipolygon->getNumGeometries(); ++currentPolygon) {
+ OGRPolygon *polygon = static_cast<OGRPolygon *>(multipolygon->getGeometryRef(currentPolygon));
+ for (int currentPoint = 1; currentPoint < polygon->getExteriorRing()->getNumPoints(); ++currentPoint) {
+ Segment thisSegment(Point(polygon->getExteriorRing()->getX(currentPoint-1), polygon->getExteriorRing()->getY(currentPoint-1)),
+ Point(polygon->getExteriorRing()->getX(currentPoint), polygon->getExteriorRing()->getY(currentPoint)));
+ if (thisSegment.is_degenerate()) {
+ std::cout << "This should not happen!!!" << std::endl;
+ return new OGRMultiPolygon();
+ } inputSegments.push_back(thisSegment);
+ } for (int currentRing = 0; currentRing < polygon->getNumInteriorRings(); ++currentRing) {
+ for (int currentPoint = 1; currentPoint < polygon->getInteriorRing(currentRing)->getNumPoints(); ++currentPoint) {
+ Segment thisSegment(Point(polygon->getExteriorRing()->getX(currentPoint-1), polygon->getExteriorRing()->getY(currentPoint-1)),
+ Point(polygon->getExteriorRing()->getX(currentPoint), polygon->getExteriorRing()->getY(currentPoint)));
+ if (thisSegment.is_degenerate()) {
+ std::cout << "This should not happen!!!" << std::endl;
+ return new OGRMultiPolygon();
+ } std::cout << thisSegment << std::endl;
+ inputSegments.push_back(thisSegment);
+ }
+ }
+ }
+
+ // Snap
+ std::list<std::list<Point> > outputPolylines;
+ CGAL::snap_rounding_2<SRT, std::list<Segment>::const_iterator, std::list<std::list<Point> > >(inputSegments.begin(), inputSegments.end(), outputPolylines, tolerance, true, false, 2);
+
+ // Put it back into an OGRMultiPolygon
+ OGRMultiPolygon *snappedMultipolygon = new OGRMultiPolygon();
+ std::list<std::list<Point> >::iterator currentPolyline = outputPolylines.begin();
+ for (int currentPolygon = 0; currentPolygon < multipolygon->getNumGeometries(); ++currentPolygon) {
+ OGRPolygon *polygon = static_cast<OGRPolygon *>(multipolygon->getGeometryRef(currentPolygon));
+ OGRPolygon *snappedPolygon = new OGRPolygon();
+ OGRLinearRing *snappedOuterRing = new OGRLinearRing();
+ for (int currentPoint = 1; currentPoint < polygon->getExteriorRing()->getNumPoints(); ++currentPoint) {
+ std::list<Point>::iterator point = currentPolyline->begin();
+ ++point;
+ while (point != currentPolyline->end()) {
+ snappedOuterRing->addPoint(CGAL::to_double(point->x()), CGAL::to_double(point->y()));
+ ++point;
+ } ++currentPolyline;
+ } snappedPolygon->addRingDirectly(snappedOuterRing);
+ for (int currentRing = 0; currentRing < polygon->getNumInteriorRings(); ++currentRing) {
+ OGRLinearRing *snappedInnerRing = new OGRLinearRing();
+ for (int currentPoint = 1; currentPoint < polygon->getInteriorRing(currentRing)->getNumPoints(); ++currentPoint) {
+ std::list<Point>::iterator point = currentPolyline->begin();
+ ++point;
+ while (point != currentPolyline->end()) {
+ snappedOuterRing->addPoint(CGAL::to_double(point->x()), CGAL::to_double(point->y()));
+ ++point;
+ } ++currentPolyline;
+ } snappedPolygon->addRingDirectly(snappedInnerRing);
+ } snappedMultipolygon->OGRGeometryCollection::addGeometryDirectly(snappedPolygon);
+ }
+
+ return snappedMultipolygon;
+}
+
+double PolygonRepair::computeRobustness(OGRGeometry *geometry) {
+ double smallestdist = 1e99;
+
+ if (geometry != NULL) insertConstraints(triangulation, geometry);
+
+ //-- vertex-vertex distances
+ Vector dist;
+ for (Triangulation::Finite_vertices_iterator curV = triangulation.finite_vertices_begin(); curV != triangulation.finite_vertices_end(); curV++) {
+ // std::cout << "---" << curV->point() << "---" << std::endl;
+ Triangulation::Vertex_circulator vc = triangulation.incident_vertices(curV);
+ Triangulation::Vertex_handle startv = vc;
+ vc++;
+ while (vc != startv) {
+ if (triangulation.is_infinite(vc) == false) {
+ // std::cout << vc->point() << std::endl;
+ dist = curV->point() - vc->point();
+ // std::cout << "distance: " << dist.squared_length() << std::endl;
+ if (dist.squared_length() < smallestdist)
+ smallestdist = CGAL::to_double(dist.squared_length());
+ }
+ vc++;
+ }
+ dist = curV->point() - startv->point();
+ if (dist.squared_length() < smallestdist)
+ smallestdist = CGAL::to_double(dist.squared_length());
+ }
+
+ //-- vertex-edge distances
+ for (Triangulation::Finite_vertices_iterator curV = triangulation.finite_vertices_begin(); curV != triangulation.finite_vertices_end(); curV++) {
+ // std::cout << "---" << curV->point() << "---" << std::endl;
+ Triangulation::Face_circulator fc = triangulation.incident_faces(curV);
+ Triangulation::Face_handle startf = fc;
+ fc++;
+ while (fc != startf) {
+ if (triangulation.is_infinite(fc) == false) {
+ int i = fc->index(curV);
+ if (fc->is_constrained(i)) {
+ double d = CGAL::to_double(squared_distance(triangulation.segment(fc, i), fc->vertex(i)->point()));
+ if (d < smallestdist)
+ smallestdist = d;
+ }
+ }
+ fc++;
+ }
+ if (triangulation.is_infinite(startf) == false) {
+ int i = startf->index(curV);
+ if (startf->is_constrained(i)) {
+ double d = CGAL::to_double(squared_distance(triangulation.segment(startf, i), startf->vertex(i)->point()));
+ if (d < smallestdist)
+ smallestdist = d;
+ }
+ }
+ }
+ if (geometry != NULL) triangulation.clear();
+ return smallestdist;
+}
+
+bool PolygonRepair::saveToShp(OGRGeometry* geometry, const char *fileName) {
+ const char *driverName = "ESRI Shapefile";
+ OGRRegisterAll();
+ OGRSFDriver *driver = OGRSFDriverRegistrar::GetRegistrar()->GetDriverByName(driverName);
+ if (driver == NULL) {
+ std::cout << "\tError: OGR Shapefile driver not found." << std::endl;
+ return false;
+ }
+ OGRDataSource *dataSource = driver->Open(fileName, false);
+ if (dataSource != NULL) {
+ std::cout << "\tOverwriting file..." << std::endl;
+ if (driver->DeleteDataSource(dataSource->GetName())!= OGRERR_NONE) {
+ std::cout << "\tError: Couldn't erase file with same name." << std::endl;
+ return false;
+ } OGRDataSource::DestroyDataSource(dataSource);
+ }
+ std::cout << "\tCreating " << fileName << std::endl;
+ dataSource = driver->CreateDataSource(fileName, NULL);
+ if (dataSource == NULL) {
+ std::cout << "\tError: Could not create file." << std::endl;
+ return false;
+ }
+ OGRLayer *layer = dataSource->CreateLayer("polygons", NULL, wkbPolygon, NULL);
+ if (layer == NULL) {
+ std::cout << "\tError: Could not create layer." << std::endl;
+ return false;
+ }
+ OGRFeature *feature = OGRFeature::CreateFeature(layer->GetLayerDefn());
+ // feature->SetField("Name", szName);
+ feature->SetGeometry(geometry);
+ if (layer->CreateFeature(feature) != OGRERR_NONE) {
+ std::cout << "\tError: Could not create feature." << std::endl;
+ }
+ OGRFeature::DestroyFeature(feature);
+ OGRDataSource::DestroyDataSource(dataSource);
+ return true;
+}
+
+void PolygonRepair::insertConstraints(Triangulation &triangulation, OGRGeometry* geometry, bool removeOverlappingConstraints) {
+ Triangulation::Vertex_handle va, vb;
+ Triangulation::Face_handle faceOfEdge;
+ int indexOfEdge;
+
+ switch (geometry->getGeometryType()) {
+
+ case wkbLineString: {
+ OGRLinearRing *ring = static_cast<OGRLinearRing *>(geometry);
+ ring->closeRings();
+
+ vb = triangulation.insert(Point(ring->getX(0), ring->getY(0)));
+ for (int currentPoint = 1; currentPoint < ring->getNumPoints(); ++currentPoint) {
+ va = vb;
+ vb = triangulation.insert(Point(ring->getX(currentPoint),
+ ring->getY(currentPoint)),
+ triangulation.incident_faces(va));
+ if (removeOverlappingConstraints && triangulation.is_edge(va, vb, faceOfEdge, indexOfEdge)) {
+ if (triangulation.is_constrained(std::pair<Triangulation::Face_handle, int>(faceOfEdge, indexOfEdge))) {
+ triangulation.insert_constraint(va, vb); // trick to remove a partially overlapping constraint
+ triangulation.remove_constraint(va, vb);
+ } else triangulation.insert_constraint(va, vb);
+ } else triangulation.insert_constraint(va, vb);
+ } break;
+ }
+
+ case wkbPolygon: {
+ OGRPolygon *polygon = static_cast<OGRPolygon *>(geometry);
+
+ // Outer
+ vb = triangulation.insert(Point(polygon->getExteriorRing()->getX(0), polygon->getExteriorRing()->getY(0)));
+ for (int currentPoint = 1; currentPoint < polygon->getExteriorRing()->getNumPoints(); ++currentPoint) {
+ va = vb;
+ vb = triangulation.insert(Point(polygon->getExteriorRing()->getX(currentPoint),
+ polygon->getExteriorRing()->getY(currentPoint)),
+ triangulation.incident_faces(va));
+ if (removeOverlappingConstraints && triangulation.is_edge(va, vb, faceOfEdge, indexOfEdge)) {
+ if (triangulation.is_constrained(std::pair<Triangulation::Face_handle, int>(faceOfEdge, indexOfEdge))) {
+ triangulation.insert_constraint(va, vb);
+ triangulation.remove_constraint(va, vb);
+ //std::cout << "Removing constraint <" << va->point() << ", " << vb->point() << ">" << std::endl;
+ } else {
+ triangulation.insert_constraint(va, vb);
+ //std::cout << "Inserting constraint <" << va->point() << ", " << vb->point() << ">" << std::endl;
+ }
+ } else {
+ triangulation.insert_constraint(va, vb);
+ //std::cout << "Inserting constraint <" << va->point() << ", " << vb->point() << ">" << std::endl;
+ }
+ }
+
+ // Inner
+ for (int currentRing = 0; currentRing < polygon->getNumInteriorRings(); ++currentRing) {
+ vb = triangulation.insert(Point(polygon->getInteriorRing(currentRing)->getX(0),
+ polygon->getInteriorRing(currentRing)->getY(0)));
+ for (int currentPoint = 1; currentPoint < polygon->getInteriorRing(currentRing)->getNumPoints(); ++currentPoint) {
+ va = vb;
+ vb = triangulation.insert(Point(polygon->getInteriorRing(currentRing)->getX(currentPoint),
+ polygon->getInteriorRing(currentRing)->getY(currentPoint)),
+ triangulation.incident_faces(va));
+ if (removeOverlappingConstraints && triangulation.is_edge(va, vb, faceOfEdge, indexOfEdge)) {
+ if (triangulation.is_constrained(std::pair<Triangulation::Face_handle, int>(faceOfEdge, indexOfEdge))) {
+ triangulation.insert_constraint(va, vb);
+ triangulation.remove_constraint(va, vb);
+ //std::cout << "Removing constraint <" << va->point() << ", " << vb->point() << ">" << std::endl;
+ } else {
+ triangulation.insert_constraint(va, vb);
+ //std::cout << "Inserting constraint <" << va->point() << ", " << vb->point() << ">" << std::endl;
+ }
+ } else {
+ triangulation.insert_constraint(va, vb);
+ //std::cout << "Inserting constraint <" << va->point() << ", " << vb->point() << ">" << std::endl;
+ }
+ }
+ } break;
+
+ }
+
+ case wkbMultiPolygon: {
+ OGRMultiPolygon *multipolygon = static_cast<OGRMultiPolygon *>(geometry);
+ for (int currentPolygon = 0; currentPolygon < multipolygon->getNumGeometries(); ++currentPolygon) {
+ OGRPolygon *polygon = static_cast<OGRPolygon *>(multipolygon->getGeometryRef(currentPolygon));
+
+ // Outer
+ vb = triangulation.insert(Point(polygon->getExteriorRing()->getX(0),
+ polygon->getExteriorRing()->getY(0)));
+ for (int currentPoint = 1; currentPoint < polygon->getExteriorRing()->getNumPoints(); ++currentPoint) {
+ va = vb;
+ vb = triangulation.insert(Point(polygon->getExteriorRing()->getX(currentPoint),
+ polygon->getExteriorRing()->getY(currentPoint)),
+ triangulation.incident_faces(va));
+ if (removeOverlappingConstraints && triangulation.is_edge(va, vb, faceOfEdge, indexOfEdge)) {
+ if (triangulation.is_constrained(std::pair<Triangulation::Face_handle, int>(faceOfEdge, indexOfEdge))) {
+ triangulation.insert_constraint(va, vb);
+ triangulation.remove_constraint(va, vb);
+ } else triangulation.insert_constraint(va, vb);
+ } else triangulation.insert_constraint(va, vb);
+ }
+
+ // Inner
+ for (int currentRing = 0; currentRing < polygon->getNumInteriorRings(); ++currentRing) {
+ vb = triangulation.insert(Point(polygon->getInteriorRing(currentRing)->getX(0),
+ polygon->getInteriorRing(currentRing)->getY(0)));
+ for (int currentPoint = 1; currentPoint < polygon->getInteriorRing(currentRing)->getNumPoints(); ++currentPoint) {
+ va = vb;
+ vb = triangulation.insert(Point(polygon->getInteriorRing(currentRing)->getX(currentPoint),
+ polygon->getInteriorRing(currentRing)->getY(currentPoint)),
+ triangulation.incident_faces(va));
+ if (removeOverlappingConstraints && triangulation.is_edge(va, vb, faceOfEdge, indexOfEdge)) {
+ if (triangulation.is_constrained(std::pair<Triangulation::Face_handle, int>(faceOfEdge, indexOfEdge))) {
+ triangulation.insert_constraint(va, vb);
+ triangulation.remove_constraint(va, vb);
+ } else triangulation.insert_constraint(va, vb);
+ } else triangulation.insert_constraint(va, vb);
+ }
+ }
+ } break;
+ }
+
+ default:
+ std::cerr << "PolygonRepair::insertConstraints: Cannot understand input." << std::endl;
+ return;
+ break;
+ }
+
+ // Remove partially even-overlapping subconstraints
+ if (!removeOverlappingConstraints) return;
+ for (Triangulation::Subconstraint_iterator currentEdge = triangulation.subconstraints_begin();
+ currentEdge != triangulation.subconstraints_end();
+ ++currentEdge) {
+ if (triangulation.number_of_enclosing_constraints(currentEdge->first.first, currentEdge->first.second) % 2 == 0) {
+ if (triangulation.is_edge(currentEdge->first.first, currentEdge->first.second, faceOfEdge, indexOfEdge)) {
+ if (triangulation.is_constrained(std::pair<Triangulation::Face_handle, int>(faceOfEdge, indexOfEdge))) {
+ //std::cout << "Removing constraint <" << currentEdge->first.first->point() << ", " << currentEdge->first.second->point() << ">" << std::endl;
+ triangulation.remove_constrained_edge(faceOfEdge, indexOfEdge);
+ }
+ }
+ }
+ }
+}
+
+void PolygonRepair::tagOddEven(Triangulation &triangulation) {
+
+ // Clean tags
+ for (Triangulation::Face_handle currentFace = triangulation.all_faces_begin(); currentFace != triangulation.all_faces_end(); ++currentFace)
+ currentFace->info().clear();
+
+ // Initialise tagging
+ std::stack<Triangulation::Face_handle> interiorStack, exteriorStack;
+ exteriorStack.push(triangulation.infinite_face());
+ std::stack<Triangulation::Face_handle> *currentStack = &exteriorStack;
+ std::stack<Triangulation::Face_handle> *dualStack = &interiorStack;
+ bool labellingInterior = false;
+
+
+ // Until we finish
+ while (!interiorStack.empty() || !exteriorStack.empty()) {
+
+ // Give preference to whatever we're already doing
+ while (!currentStack->empty()) {
+ Triangulation::Face_handle currentFace = currentStack->top();
+ currentStack->pop();
+ if (currentFace->info().beenTagged()) continue;
+ currentFace->info().isInInterior(labellingInterior);
+ for (int currentEdge = 0; currentEdge < 3; ++currentEdge) {
+ if (!currentFace->neighbor(currentEdge)->info().beenTagged()) {
+ if (currentFace->is_constrained(currentEdge))
+ dualStack->push(currentFace->neighbor(currentEdge));
+ else
+ currentStack->push(currentFace->neighbor(currentEdge));
+ }
+ }
+ }
+
+ // Flip
+ if (!labellingInterior) {
+ currentStack = &interiorStack;
+ dualStack = &exteriorStack;
+ } else {
+ currentStack = &exteriorStack;
+ dualStack = &interiorStack;
+ } labellingInterior = !labellingInterior;
+ }
+}
+
+void PolygonRepair::tagPointSet(Triangulation &triangulation, std::list<std::pair<bool, OGRMultiPolygon *> > &geometries) {
+
+ // Clean tags
+ for (Triangulation::Face_handle currentFace = triangulation.all_faces_begin(); currentFace != triangulation.all_faces_end(); ++currentFace)
+ currentFace->info().clear();
+
+ std::stack<Triangulation::Face_handle> borderTriangles, taggingStack, untaggingStack;
+ Triangulation::Vertices_in_constraint_iterator currentVertex, nextVertex, lastVertex;
+ Triangulation::Vertex_handle va, vb;
+ Triangulation::Face_handle faceOfSubedge;
+ int indexOfSubedge;
+ bool sameOrder;
+
+ // Add all repaired outer rings
+ for (std::list<std::pair<bool, OGRMultiPolygon *> >::iterator multipolygon = geometries.begin();
+ multipolygon != geometries.end(); ++multipolygon) {
+ for (int currentPolygon = 0; currentPolygon < multipolygon->second->getNumGeometries(); ++currentPolygon) {
+ OGRPolygon *polygon = static_cast<OGRPolygon *>(multipolygon->second->getGeometryRef(currentPolygon));
+ taggingStack = std::stack<Triangulation::Face_handle>();
+
+ // Outer
+ if (!multipolygon->first) for (int currentPoint = 0; currentPoint < polygon->getExteriorRing()->getNumPoints(); ++currentPoint) {
+ va = triangulation.insert(Point(polygon->getExteriorRing()->getX(currentPoint),
+ polygon->getExteriorRing()->getY(currentPoint)));
+ vb = triangulation.insert(Point(polygon->getExteriorRing()->getX((currentPoint+1)%polygon->getExteriorRing()->getNumPoints()),
+ polygon->getExteriorRing()->getY((currentPoint+1)%polygon->getExteriorRing()->getNumPoints())));
+ if (va->point() == vb->point()) continue;
+ currentVertex = triangulation.vertices_in_constraint_begin(va, vb);
+ nextVertex = currentVertex;
+ ++nextVertex;
+ lastVertex = triangulation.vertices_in_constraint_end(va, vb);
+ if (*currentVertex == va) sameOrder = true;
+ else sameOrder = false;
+ while (nextVertex != lastVertex) {
+ if (!sameOrder) {
+ if (!triangulation.is_edge(*currentVertex, *nextVertex, faceOfSubedge, indexOfSubedge)) {
+ std::cerr << "PolygonRepair::tagPointSet: Cannot find edge!" << std::endl;
+ return;
+ }
+ } else {
+ if (!triangulation.is_edge(*nextVertex, *currentVertex, faceOfSubedge, indexOfSubedge)) {
+ std::cerr << "PolygonRepair::tagPointSet: Cannot find edge!" << std::endl;
+ return;
+ }
+ } if (triangulation.number_of_enclosing_constraints(*currentVertex, *nextVertex) % 2 != 0)
+ taggingStack.push(faceOfSubedge);
+ currentVertex = nextVertex;
+ ++nextVertex;
+ }
+ }
+
+ // Inner
+ else for (int currentRing = 0; currentRing < polygon->getNumInteriorRings(); ++currentRing) {
+ for (int currentPoint = 0; currentPoint < polygon->getInteriorRing(currentRing)->getNumPoints(); ++currentPoint) {
+ va = triangulation.insert(Point(polygon->getInteriorRing(currentRing)->getX(currentPoint),
+ polygon->getInteriorRing(currentRing)->getY(currentPoint)));
+ vb = triangulation.insert(Point(polygon->getInteriorRing(currentRing)->getX((currentPoint+1)%polygon->getInteriorRing(currentRing)->getNumPoints()),
+ polygon->getInteriorRing(currentRing)->getY((currentPoint+1)%polygon->getInteriorRing(currentRing)->getNumPoints())));
+ if (va->point() == vb->point()) continue;
+ currentVertex = triangulation.vertices_in_constraint_begin(va, vb);
+ nextVertex = currentVertex;
+ ++nextVertex;
+ lastVertex = triangulation.vertices_in_constraint_end(va, vb);
+ if (*currentVertex == va) sameOrder = true;
+ else sameOrder = false;
+ while (nextVertex != lastVertex) {
+ if (sameOrder) {
+ if (!triangulation.is_edge(*currentVertex, *nextVertex, faceOfSubedge, indexOfSubedge)) {
+ std::cerr << "PolygonRepair::tagPointSet: Cannot find edge!" << std::endl;
+ return;
+ }
+ } else {
+ if (!triangulation.is_edge(*nextVertex, *currentVertex, faceOfSubedge, indexOfSubedge)) {
+ std::cerr << "PolygonRepair::tagPointSet: Cannot find edge!" << std::endl;
+ return;
+ }
+ } if (triangulation.number_of_enclosing_constraints(*currentVertex, *nextVertex) % 2 != 0)
+ taggingStack.push(faceOfSubedge);
+ currentVertex = nextVertex;
+ ++nextVertex;
+ }
+ }
+ }
+
+ // Expand the tags
+ untaggingStack = std::stack<Triangulation::Face_handle>();
+ while (!taggingStack.empty()) {
+ Triangulation::Face_handle currentFace = taggingStack.top();
+ taggingStack.pop();
+ if (currentFace->info().beenTagged()) continue;
+ currentFace->info().isInInterior(true);
+ untaggingStack.push(currentFace);
+ for (int currentEdge = 0; currentEdge < 3; ++currentEdge) {
+ if (!currentFace->neighbor(currentEdge)->info().beenTagged() &&
+ !currentFace->is_constrained(currentEdge)) {
+ taggingStack.push(currentFace->neighbor(currentEdge));
+ }
+ }
+ }
+
+ // Remove tagged tags
+ while (!untaggingStack.empty()) {
+ untaggingStack.top()->info().beenTagged(false);
+ untaggingStack.pop();
+ }
+ }
+ }
+
+ // Subtract all repaired inner rings
+ for (std::list<std::pair<bool, OGRMultiPolygon *> >::iterator multipolygon = geometries.begin();
+ multipolygon != geometries.end(); ++multipolygon) {
+ for (int currentPolygon = 0; currentPolygon < multipolygon->second->getNumGeometries(); ++currentPolygon) {
+ OGRPolygon *polygon = static_cast<OGRPolygon *>(multipolygon->second->getGeometryRef(currentPolygon));
+ taggingStack = std::stack<Triangulation::Face_handle>();
+
+ // Outer
+ if (multipolygon->first) for (int currentPoint = 0; currentPoint < polygon->getExteriorRing()->getNumPoints(); ++currentPoint) {
+ va = triangulation.insert(Point(polygon->getExteriorRing()->getX(currentPoint),
+ polygon->getExteriorRing()->getY(currentPoint)));
+ vb = triangulation.insert(Point(polygon->getExteriorRing()->getX((currentPoint+1)%polygon->getExteriorRing()->getNumPoints()),
+ polygon->getExteriorRing()->getY((currentPoint+1)%polygon->getExteriorRing()->getNumPoints())));
+ if (va->point() == vb->point()) continue;
+ currentVertex = triangulation.vertices_in_constraint_begin(va, vb);
+ nextVertex = currentVertex;
+ ++nextVertex;
+ lastVertex = triangulation.vertices_in_constraint_end(va, vb);
+ if (*currentVertex == va) sameOrder = true;
+ else sameOrder = false;
+ while (nextVertex != lastVertex) {
+ if (!sameOrder) {
+ if (!triangulation.is_edge(*currentVertex, *nextVertex, faceOfSubedge, indexOfSubedge)) {
+ std::cerr << "PolygonRepair::tagPointSet: Cannot find edge!" << std::endl;
+ return;
+ }
+ } else {
+ if (!triangulation.is_edge(*nextVertex, *currentVertex, faceOfSubedge, indexOfSubedge)) {
+ std::cerr << "PolygonRepair::tagPointSet: Cannot find edge!" << std::endl;
+ return;
+ }
+ } if (triangulation.number_of_enclosing_constraints(*currentVertex, *nextVertex) % 2 != 0) {
+ borderTriangles.push(faceOfSubedge);
+ faceOfSubedge->info().isOnBorder(true);
+ taggingStack.push(faceOfSubedge);
+ } borderTriangles.push(faceOfSubedge->neighbor(indexOfSubedge));
+ faceOfSubedge->neighbor(indexOfSubedge)->info().isOnBorder(true);
+ currentVertex = nextVertex;
+ ++nextVertex;
+ }
+ }
+
+ // Inner
+ else for (int currentRing = 0; currentRing < polygon->getNumInteriorRings(); ++currentRing) {
+ for (int currentPoint = 0; currentPoint < polygon->getInteriorRing(currentRing)->getNumPoints(); ++currentPoint) {
+ va = triangulation.insert(Point(polygon->getInteriorRing(currentRing)->getX(currentPoint),
+ polygon->getInteriorRing(currentRing)->getY(currentPoint)));
+ vb = triangulation.insert(Point(polygon->getInteriorRing(currentRing)->getX((currentPoint+1)%polygon->getInteriorRing(currentRing)->getNumPoints()),
+ polygon->getInteriorRing(currentRing)->getY((currentPoint+1)%polygon->getInteriorRing(currentRing)->getNumPoints())));
+ if (va->point() == vb->point()) continue;
+ currentVertex = triangulation.vertices_in_constraint_begin(va, vb);
+ nextVertex = currentVertex;
+ ++nextVertex;
+ lastVertex = triangulation.vertices_in_constraint_end(va, vb);
+ if (*currentVertex == va) sameOrder = true;
+ else sameOrder = false;
+ while (nextVertex != lastVertex) {
+ if (sameOrder) {
+ if (!triangulation.is_edge(*currentVertex, *nextVertex, faceOfSubedge, indexOfSubedge)) {
+ std::cerr << "PolygonRepair::tagPointSet: Cannot find edge!" << std::endl;
+ return;
+ }
+ } else {
+ if (!triangulation.is_edge(*nextVertex, *currentVertex, faceOfSubedge, indexOfSubedge)) {
+ std::cerr << "PolygonRepair::tagPointSet: Cannot find edge!" << std::endl;
+ return;
+ }
+ } if (triangulation.number_of_enclosing_constraints(*currentVertex, *nextVertex) % 2 != 0) {
+ borderTriangles.push(faceOfSubedge);
+ faceOfSubedge->info().isOnBorder(true);
+ taggingStack.push(faceOfSubedge);
+ } borderTriangles.push(faceOfSubedge->neighbor(indexOfSubedge));
+ faceOfSubedge->neighbor(indexOfSubedge)->info().isOnBorder(true);
+ currentVertex = nextVertex;
+ ++nextVertex;
+ }
+ }
+ }
+
+ // Expand the tags
+ untaggingStack = std::stack<Triangulation::Face_handle>();
+ while (!taggingStack.empty()) {
+ Triangulation::Face_handle currentFace = taggingStack.top();
+ taggingStack.pop();
+ if (currentFace->info().beenTagged()) continue;
+ currentFace->info().isInInterior(false);
+ untaggingStack.push(currentFace);
+ for (int currentEdge = 0; currentEdge < 3; ++currentEdge) {
+ if (!currentFace->neighbor(currentEdge)->info().isOnBorder() &&
+ !currentFace->neighbor(currentEdge)->info().beenTagged()) {
+ taggingStack.push(currentFace->neighbor(currentEdge));
+ }
+ }
+ }
+
+ // Remove border tags
+ while (!borderTriangles.empty()) {
+ borderTriangles.top()->info().isOnBorder(false);
+ borderTriangles.pop();
+ }
+
+ // Remove tagged tags
+ while (!untaggingStack.empty()) {
+ untaggingStack.top()->info().beenTagged(false);
+ untaggingStack.pop();
+ }
+ }
+ }
+}
+
+OGRMultiPolygon *PolygonRepair::reconstruct(Triangulation &triangulation) {
+ // std::cout << "Triangulation: " << triangulation.number_of_faces() << " faces, " << triangulation.number_of_vertices() << " vertices." << std::endl;
+ if (triangulation.number_of_faces() < 1) {
+ return NULL;
+ }
+
+ // Reconstruct
+ OGRMultiPolygon *outPolygons = new OGRMultiPolygon();
+ for (Triangulation::Finite_faces_iterator seedingFace = triangulation.finite_faces_begin(); seedingFace != triangulation.finite_faces_end(); ++seedingFace) {
+
+ if (!seedingFace->info().isInInterior() || seedingFace->info().beenReconstructed()) continue;
+ seedingFace->info().beenReconstructed(true);
+ if (!seedingFace->info().beenReconstructed()) {
+ std::cout << "ERROR! Should be marked as reconstructed!!!" << std::endl;
+ }
+
+ // Get boundary
+ std::list<Triangulation::Vertex_handle> *vertices = new std::list<Triangulation::Vertex_handle>();
+ if (seedingFace->neighbor(2)->info().isInInterior() && !seedingFace->neighbor(2)->info().beenReconstructed()) {
+ seedingFace->neighbor(2)->info().beenReconstructed(true);
+ std::list<Triangulation::Vertex_handle> *l2 = getBoundary(seedingFace->neighbor(2), seedingFace->neighbor(2)->index(seedingFace));
+ vertices->splice(vertices->end(), *l2);
+ delete l2;
+ } vertices->push_back(seedingFace->vertex(0));
+ if (seedingFace->neighbor(1)->info().isInInterior() && !seedingFace->neighbor(1)->info().beenReconstructed()) {
+ seedingFace->neighbor(1)->info().beenReconstructed(true);
+ std::list<Triangulation::Vertex_handle> *l1 = getBoundary(seedingFace->neighbor(1), seedingFace->neighbor(1)->index(seedingFace));
+ vertices->splice(vertices->end(), *l1);
+ delete l1;
+ } vertices->push_back(seedingFace->vertex(2));
+ if (seedingFace->neighbor(0)->info().isInInterior() && !seedingFace->neighbor(0)->info().beenReconstructed()) {
+ seedingFace->neighbor(0)->info().beenReconstructed(true);
+ std::list<Triangulation::Vertex_handle> *l0 = getBoundary(seedingFace->neighbor(0), seedingFace->neighbor(0)->index(seedingFace));
+ vertices->splice(vertices->end(), *l0);
+ delete l0;
+ } vertices->push_back(seedingFace->vertex(1));
+
+ // Find cutting vertices
+ std::set<Triangulation::Vertex_handle> visitedVertices;
+ std::set<Triangulation::Vertex_handle> repeatedVertices;
+ for (std::list<Triangulation::Vertex_handle>::iterator currentVertex = vertices->begin(); currentVertex != vertices->end(); ++currentVertex) {
+ if (!visitedVertices.insert(*currentVertex).second) repeatedVertices.insert(*currentVertex);
+ } visitedVertices.clear();
+
+ // Cut and join rings in the correct order
+ std::list<std::list<Triangulation::Vertex_handle> *> rings;
+ std::stack<std::list<Triangulation::Vertex_handle> *> chainsStack;
+ std::map<Triangulation::Vertex_handle, std::list<Triangulation::Vertex_handle> *> vertexChainMap;
+ std::list<Triangulation::Vertex_handle> *newChain = new std::list<Triangulation::Vertex_handle>();
+ for (std::list<Triangulation::Vertex_handle>::iterator currentVertex = vertices->begin(); currentVertex != vertices->end(); ++currentVertex) {
+
+ // New chain
+ if (repeatedVertices.count(*currentVertex) > 0) {
+ // Closed by itself
+ if (newChain->front() == *currentVertex) {
+ // Degenerate (insufficient vertices to be valid)
+ if (newChain->size() < 3) delete newChain;
+ else {
+ std::list<Triangulation::Vertex_handle>::iterator secondElement = newChain->begin();
+ ++secondElement;
+ // Degenerate (zero area)
+ if (newChain->back() == *secondElement) delete newChain;
+ // Valid
+ else rings.push_back(newChain);
+ }
+ }
+ // Open by itself
+ else {
+ // Closed with others in stack
+ if (vertexChainMap.count(*currentVertex)) {
+
+ while (chainsStack.top() != vertexChainMap[*currentVertex]) {
+ newChain->splice(newChain->begin(), *chainsStack.top());
+ chainsStack.pop();
+ } newChain->splice(newChain->begin(), *chainsStack.top());
+ chainsStack.pop();
+ vertexChainMap.erase(*currentVertex);
+ // Degenerate (insufficient vertices to be valid)
+ if (newChain->size() < 3) delete newChain;
+ else {
+ std::list<Triangulation::Vertex_handle>::iterator secondElement = newChain->begin();
+ ++secondElement;
+ // Degenerate (zero area)
+ if (newChain->back() == *secondElement) delete newChain;
+ // Valid
+ else rings.push_back(newChain);
+ }
+ }
+ // Open
+ else {
+ // Not first chain
+ if (repeatedVertices.count(newChain->front()) > 0) vertexChainMap[newChain->front()] = newChain;
+ chainsStack.push(newChain);
+ }
+ } newChain = new std::list<Triangulation::Vertex_handle>();
+ } newChain->push_back(*currentVertex);
+ }
+ // Final ring
+ while (chainsStack.size() > 0) {
+ newChain->splice(newChain->begin(), *chainsStack.top());
+ chainsStack.pop();
+ }
+ // Degenerate (insufficient vertices to be valid)
+ if (newChain->size() < 3) delete newChain;
+ else {
+ std::list<Triangulation::Vertex_handle>::iterator secondElement = newChain->begin();
+ ++secondElement;
+ // Degenerate (zero area)
+ if (newChain->back() == *secondElement) delete newChain;
+ // Valid
+ else rings.push_back(newChain);
+ }
+ // Make rings
+ std::list<OGRLinearRing *> ringsForPolygon;
+ for (std::list<std::list<Triangulation::Vertex_handle> *>::iterator currentRing = rings.begin(); currentRing != rings.end(); ++currentRing) {
+ OGRLinearRing *newRing = new OGRLinearRing();
+ for (std::list<Triangulation::Vertex_handle>::reverse_iterator currentVertex = (*currentRing)->rbegin(); currentVertex != (*currentRing)->rend(); ++currentVertex) {
+ newRing->addPoint(CGAL::to_double((*currentVertex)->point().x()), CGAL::to_double((*currentVertex)->point().y()));
+ } newRing->addPoint(CGAL::to_double((*currentRing)->back()->point().x()), CGAL::to_double((*currentRing)->back()->point().y()));
+ ringsForPolygon.push_back(newRing);
+ } OGRPolygon *newPolygon = new OGRPolygon();
+ for (std::list<OGRLinearRing *>::iterator currentRing = ringsForPolygon.begin(); currentRing != ringsForPolygon.end(); ++currentRing) {
+ if (!(*currentRing)->isClockwise()) {
+ newPolygon->addRingDirectly(*currentRing);
+ break;
+ }
+ } for (std::list<OGRLinearRing *>::iterator currentRing = ringsForPolygon.begin(); currentRing != ringsForPolygon.end(); ++currentRing)
+ if ((*currentRing)->isClockwise()) newPolygon->addRingDirectly(*currentRing);
+ outPolygons->addGeometryDirectly(newPolygon);
+ } return outPolygons;
+}
+
+std::list<Triangulation::Vertex_handle> *PolygonRepair::getBoundary(Triangulation::Face_handle face, int edge) {
+ std::list<Triangulation::Vertex_handle> *vertices = new std::list<Triangulation::Vertex_handle>();
+
+ // Check clockwise edge
+ if (face->neighbor(face->cw(edge))->info().isInInterior() && !face->neighbor(face->cw(edge))->info().beenReconstructed()) {
+ face->neighbor(face->cw(edge))->info().beenReconstructed(true);
+ std::list<Triangulation::Vertex_handle> *v1 = getBoundary(face->neighbor(face->cw(edge)), face->neighbor(face->cw(edge))->index(face));
+ vertices->splice(vertices->end(), *v1);
+ delete v1;
+ }
+
+ // Add central vertex
+ vertices->push_back(face->vertex(edge));
+
+ // Check counterclockwise edge
+ if (face->neighbor(face->ccw(edge))->info().isInInterior() && !face->neighbor(face->ccw(edge))->info().beenReconstructed()) {
+ face->neighbor(face->ccw(edge))->info().beenReconstructed(true);
+ std::list<Triangulation::Vertex_handle> *v2 = getBoundary(face->neighbor(face->ccw(edge)), face->neighbor(face->ccw(edge))->index(face));
+ vertices->splice(vertices->end(), *v2);
+ delete v2;
+ }
+
+ return vertices;
+}
+
+void PolygonRepair::printEdges(Triangulation &triangulation) {
+ std::cout << "Edges:" << std::endl;
+ for (Triangulation::Finite_edges_iterator currentEdge = triangulation.finite_edges_begin();
+ currentEdge != triangulation.finite_edges_end();
+ ++currentEdge) {
+ if (triangulation.is_constrained(*currentEdge))
+ std::cout << "\t<" << currentEdge->first->vertex((currentEdge->second+1)%3)->point() << ", " << currentEdge->first->vertex((currentEdge->second+2)%3)->point() << ">" << std::endl;
+ }
+}
+
+void PolygonRepair::printTriangle(Triangulation::Face_handle triangle) {
+ std::cout << "TRIANGLE(" << triangle->vertex(0)->point() << ", " << triangle->vertex(1)->point() << ", " << triangle->vertex(2)->point() << ")";
+}
+
+void PolygonRepair::printChain(std::list<Triangulation::Vertex_handle> &chain) {
+ for (std::list<Triangulation::Vertex_handle>::iterator currentVertex = chain.begin(); currentVertex != chain.end(); ++currentVertex) {
+ std::cout << (*currentVertex)->point() << ", ";
+ } std::cout << std::endl;
+}
diff --git a/PolygonRepair.h b/PolygonRepair.h
new file mode 100644
index 0000000..0f867c5
--- /dev/null
+++ b/PolygonRepair.h
@@ -0,0 +1,50 @@
+/*
+ Copyright (c) 2009-2013,
+ Ken Arroyo Ohori g.a.k.arroyoohori at tudelft.nl
+ Hugo Ledoux h.ledoux at tudelft.nl
+ Martijn Meijers b.m.meijers at tudelft.nl
+ All rights reserved.
+
+ // This file is part of prepair: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Licensees holding a valid commercial license may use this file in
+ accordance with the commercial license agreement provided with
+ the software.
+
+ This file is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef POLYGONREPAIR_H
+
+#include "definitions.h"
+
+class PolygonRepair {
+public:
+ OGRMultiPolygon *repairOddEven(OGRGeometry *geometry, bool timeResults = false);
+ OGRMultiPolygon *repairPointSet(OGRGeometry *geometry, bool timeResults = false);
+ void removeSmallPolygons(OGRMultiPolygon *outPolygons, double minArea);
+ OGRMultiPolygon *isr(OGRGeometry *geometry, double tolerance);
+ double computeRobustness(OGRGeometry *geometry = NULL);
+ bool saveToShp(OGRGeometry* geometry, const char *fileName);
+
+private:
+ Triangulation triangulation;
+
+ void insertConstraints(Triangulation &triangulation, OGRGeometry *geometry, bool removeOverlappingConstraints = true);
+ void tagOddEven(Triangulation &triangulation);
+ void tagPointSet(Triangulation &triangulation, std::list<std::pair<bool, OGRMultiPolygon *> > &geometries);
+ OGRMultiPolygon *reconstruct(Triangulation &triangulation);
+ std::list<Triangulation::Vertex_handle> *getBoundary(Triangulation::Face_handle face, int edge);
+
+ // Debug functions
+ void printEdges(Triangulation &triangulation);
+ void printTriangle(Triangulation::Face_handle triangle);
+ void printChain(std::list<Triangulation::Vertex_handle> &chain);
+};
+
+#endif
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..7805c7f
--- /dev/null
+++ b/README.md
@@ -0,0 +1,96 @@
+## What is prepair?
+
+prepair -- pronounce 'pee-repair' as in 'polygon repair' -- permits us to easily repair "broken" GIS polygons, and that according to the international standards ISO 19107 (Geographic information -- Spatial schema). In brief, given a polygon, it *automatically* repairs it and returns back a valid polygon (actually a MultiPolygon if the input represents more than one polygon). Note that this project is only concerned with single polygons, if you're interested in validating how different po [...]
+
+Automated repair methods can be considered as interpreting ambiguous or ill-defined polygons and giving a coherent and clearly defined output. Examples of errors are: polygon has a dangling edge; polygon is not closed; polygon self-intersects; an inner ring of the polygon is located outside the outer ring; etc.
+
+prepair performs more or less the same as the new PostGIS 2.0's function [ST_MakeValid()](http://postgis.org/documentation/manual-svn/ST_MakeValid.html), but is faster, scales better to massive polygons, and predicting its behaviour is simple (so one can guess how her polygons will be repaired).
+We have implemented two repair paradigms: an extension of the [odd-even algorithm](https://en.wikipedia.org/wiki/Even-odd_rule) to handle GIS polygons containing inner rings and degeneracies; and one where we follow a *set difference* rule for the rings.
+
+prepair is based on a constrained triangulation ([CGAL](http://www.cgal.org) is used) and [OGR](http://www.gdal.org/ogr/) is used to read/write WKT.
+
+It is available under a dual license scheme: [GPLv3](http://www.gnu.org/copyleft/gpl.html) and commercial. If you are interested in a commercial license, please contact [Ken Arroyo Ohori](mailto:g.a.k.arroyoohori at tudelft.nl).
+
+## Details
+
+Details of how we automatically repair broken polygons, and what results you can expect, are available in this scientific article:
+
+
+> Ledoux, H., Arroyo Ohori, K., and Meijers, M. (2014). A triangulation-based approach to automatically repair GIS polygons. *Computers & Geosciences* 66:121-–131. [ [DOI] ](http://dx.doi.org/10.1016/j.cageo.2014.01.009) [ [PDF] ](http://homepage.tudelft.nl/23t4p/pdfs/14cgeo_prepair.pdf)
+
+If you use prepair for a scientific project, please cite this article.
+
+## How to compile?
+
+prepair is provided as source code, which is very easy to compile it on Linux and Mac. We plan on offering binaries (including for Windows) in the future.
+
+To compile it, you first need to install the following three (free) libraries:
+
+1. [CGAL](http://www.cgal.org)
+2. [OGR](http://www.gdal.org/ogr/)
+3. [CMake](http://www.cmake.org)
+
+Afterwards run:
+
+ $ cmake .
+ $ make
+
+## It's a command-line program only
+
+A [WKT](http://en.wikipedia.org/wiki/Well-known_text) or an OGR dataset (shapefile, geojson or GML for instance) is read as input, and a WKT or a shapefile (a MultiPolygon) is given as output:
+
+ $ ./prepair --wkt 'POLYGON((0 0, 0 10, 10 0, 10 10, 0 0))'
+ MULTIPOLYGON (((0 10,0 0,5 5,0 10)),((5 5,10 0,10 10,5 5)))
+
+ $ ./prepair --ogr myfile.shp
+ MULTIPOLYGON (((0 10,0 0,5 5,0 10)),((5 5,10 0,10 10,5 5)))
+
+ $ ./prepair --shpOut --ogr data/CLC2006_180927.geojson
+ Creating out.shp
+
+[Snap rounding](http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Snap_rounding_2/Chapter_main.html) of the input segments can be performed:
+
+ $ /prepair --isr 2 --wkt "POLYGON((0 0, 10 0, 15 5, 10 0, 10 10, 0 10, 0 0))"
+ MULTIPOLYGON (((11 1,11 11,1 11,1 1,11 1)))
+
+It's possible to remove small (sliver) polygons in the output by giving the smallest area allowed:
+
+ $ ./prepair --wkt 'POLYGON((0 0, 10 0, 10 11, 11 10, 0 10))'
+ MULTIPOLYGON (((10 0,10 10,0 10,0 0,10 0)),((11 10,10 11,10 10,11 10)))
+
+ $ ./prepair --wkt 'POLYGON((0 0, 10 0, 10 11, 11 10, 0 10))' --minarea 1
+ Removing polygons smaller than 1 unit^2.
+ MULTIPOLYGON (((10 0,10 10,0 10,0 0,10 0)))
+
+## Examples of invalid input you can try
+
+The folder 'data' contains examples of relatively big invalid polygons. These are from the [Corine Land Cover 2006 dataset.](http://sia.eionet.europa.eu/CLC2006)
+
+A 'bowtie' polygon:
+
+ POLYGON((0 0, 0 10, 10 0, 10 10, 0 0))
+
+Square with wrong orientation:
+
+ POLYGON((0 0, 0 10, 10 10, 10 0, 0 0))
+
+Inner ring with one edge sharing part of an edge of the outer ring:
+
+ POLYGON((0 0, 10 0, 10 10, 0 10, 0 0),(5 2,5 7,10 7, 10 2, 5 2))
+
+Dangling edge:
+
+ POLYGON((0 0, 10 0, 15 5, 10 0, 10 10, 0 10, 0 0))
+
+Outer ring not closed:
+
+ POLYGON((0 0, 10 0, 10 10, 0 10))
+
+Two adjacent inner rings:
+
+ POLYGON((0 0, 10 0, 10 10, 0 10, 0 0), (1 1, 1 8, 3 8, 3 1, 1 1), (3 1, 3 8, 5 8, 5 1, 3 1))
+
+Polygon with an inner ring inside another inner ring:
+
+ POLYGON((0 0, 10 0, 10 10, 0 10, 0 0), (2 8, 5 8, 5 2, 2 2, 2 8), (3 3, 4 3, 3 4, 3 3))
+
diff --git a/TriangleInfo.cpp b/TriangleInfo.cpp
new file mode 100644
index 0000000..68cd6d4
--- /dev/null
+++ b/TriangleInfo.cpp
@@ -0,0 +1,66 @@
+/*
+ Copyright (c) 2009-2013,
+ Ken Arroyo Ohori g.a.k.arroyoohori at tudelft.nl
+ Hugo Ledoux h.ledoux at tudelft.nl
+ Martijn Meijers b.m.meijers at tudelft.nl
+ All rights reserved.
+
+ // This file is part of prepair: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Licensees holding a valid commercial license may use this file in
+ accordance with the commercial license agreement provided with
+ the software.
+
+ This file is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#include "TriangleInfo.h"
+
+TriangleInfo::TriangleInfo() {
+ info = 0x00;
+}
+
+void TriangleInfo::clear() {
+ info = 0x00;
+}
+
+bool TriangleInfo::beenTagged() {
+ return (info & 0x01) == 0x01;
+}
+
+void TriangleInfo::beenTagged(bool tagged) {
+ if (tagged) info |= 0x01;
+ else info &= 0xfe;
+}
+
+bool TriangleInfo::isInInterior() {
+ return (info & 0x02) == 0x02;
+}
+
+void TriangleInfo::isInInterior(bool inInterior) {
+ if (inInterior) info |= 0x03;
+ else info = (info & 0xfd) | 0x01;
+}
+
+bool TriangleInfo::isOnBorder() {
+ return (info & 0x04) == 0x04;
+}
+
+void TriangleInfo::isOnBorder(bool onBorder) {
+ if (onBorder) info |= 0x04;
+ else info &= 0xfb;
+}
+
+bool TriangleInfo::beenReconstructed() {
+ return (info & 0x08) == 0x08;
+}
+
+void TriangleInfo::beenReconstructed(bool reconstructed) {
+ if (reconstructed) info |= 0x08;
+ else info &= 0xf7;
+}
\ No newline at end of file
diff --git a/TriangleInfo.h b/TriangleInfo.h
new file mode 100644
index 0000000..df2045e
--- /dev/null
+++ b/TriangleInfo.h
@@ -0,0 +1,45 @@
+/*
+ Copyright (c) 2009-2013,
+ Ken Arroyo Ohori g.a.k.arroyoohori at tudelft.nl
+ Hugo Ledoux h.ledoux at tudelft.nl
+ Martijn Meijers b.m.meijers at tudelft.nl
+ All rights reserved.
+
+ // This file is part of prepair: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Licensees holding a valid commercial license may use this file in
+ accordance with the commercial license agreement provided with
+ the software.
+
+ This file is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef TRIANGLEINFO_H
+#define TRIANGLEINFO_H
+
+// TODO: Maybe create a marker manager in the future
+class TriangleInfo {
+public:
+ TriangleInfo();
+
+ void clear();
+ bool beenTagged();
+ void beenTagged(bool tagged);
+ bool isInInterior();
+ void isInInterior(bool inInterior);
+ bool isOnBorder();
+ void isOnBorder(bool onBorder);
+ bool beenReconstructed();
+ void beenReconstructed(bool reconstructed);
+
+private:
+ unsigned char info; // Bitset: unused unused unused unused
+ // not reconstructed/reconstructed normal/border exterior/interior untagged/tagged
+};
+
+#endif
diff --git a/data/CLC2006_180927.geojson b/data/CLC2006_180927.geojson
new file mode 100644
index 0000000..65cfc4a
--- /dev/null
+++ b/data/CLC2006_180927.geojson
@@ -0,0 +1,8 @@
+{
+"type": "FeatureCollection",
+
+"features": [
+{ "type": "Feature", "id": 1, "properties": { }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 20.334951393721923, 69.312059175453697 ], [ 20.327375208667871, 69.312293026311792 ], [ 20.327485364246169, 69.312739485142785 ], [ 20.326222622420008, 69.312778428651612 ], [ 20.326237341868506, 69.314127542415079 ], [ 20.325084634162735, 69.314612937857888 ], [ 20.324934098584368, 69.315292361724033 ], [ 20.323067276254577, 69.315462362188399 ], [ 20.320568961428449, 69.31565179344124 [...]
+
+]
+}
diff --git a/data/CLC2006_2018418.geojson b/data/CLC2006_2018418.geojson
new file mode 100644
index 0000000..ad1018b
--- /dev/null
+++ b/data/CLC2006_2018418.geojson
@@ -0,0 +1,8 @@
+{
+"type": "FeatureCollection",
+
+"features": [
+{ "type": "Feature", "id": 1, "properties": { }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 22.716652616507279, 41.739391777210315 ], [ 22.717590221328923, 41.739306431415358 ], [ 22.718575474468775, 41.739264303545092 ], [ 22.71858424200682, 41.739592533490146 ], [ 22.718380460233906, 41.740170107222404 ], [ 22.718174484918258, 41.740665690567852 ], [ 22.717937147369661, 41.741353250284888 ], [ 22.718630995087022, 41.741342854978051 ], [ 22.719237817489113, 41.740813893409765 [...]
+
+]
+}
diff --git a/definitions.h b/definitions.h
new file mode 100644
index 0000000..e2cb447
--- /dev/null
+++ b/definitions.h
@@ -0,0 +1,84 @@
+/*
+ Copyright (c) 2009-2013,
+ Ken Arroyo Ohori g.a.k.arroyoohori at tudelft.nl
+ Hugo Ledoux h.ledoux at tudelft.nl
+ Martijn Meijers b.m.meijers at tudelft.nl
+ All rights reserved.
+
+ // This file is part of prepair: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Licensees holding a valid commercial license may use this file in
+ accordance with the commercial license agreement provided with
+ the software.
+
+ This file is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+// Compile-time options
+// * if the code crashes, try to compile with EXACT_CONSTRUCTIONS so that
+// robust arithmetic is used
+// * switch to the setdiff paradigm by defining SET_DIFF
+
+#define EXACT_CONSTRUCTIONS
+
+#ifndef DEFINITIONS_H
+#define DEFINITIONS_H
+
+#include "TriangleInfo.h"
+
+// STL
+#include <iostream>
+#include <stack>
+#include <set>
+#include <list>
+#include <fstream>
+#include <math.h>
+#include <time.h>
+
+// OGR
+#include <gdal/ogrsf_frmts.h>
+
+// CGAL
+#ifdef EXACT_CONSTRUCTIONS
+#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
+#else
+#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
+#endif
+#include <CGAL/Triangulation_face_base_with_info_2.h>
+#include <CGAL/Constrained_Delaunay_triangulation_2.h>
+#include <CGAL/Triangulation_hierarchy_2.h>
+#include <CGAL/Constrained_triangulation_plus_2.h>
+#include <CGAL/Snap_rounding_traits_2.h>
+#include <CGAL/Snap_rounding_2.h>
+
+// Kernel
+#ifdef EXACT_CONSTRUCTIONS
+typedef CGAL::Exact_predicates_exact_constructions_kernel K;
+#else
+typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
+#endif
+
+typedef CGAL::Triangulation_vertex_base_2<K> TVB;
+typedef CGAL::Triangulation_hierarchy_vertex_base_2<TVB> VB;
+typedef CGAL::Constrained_triangulation_face_base_2<K> FB;
+typedef CGAL::Triangulation_face_base_with_info_2<TriangleInfo, K, FB> FBWI;
+typedef CGAL::Triangulation_data_structure_2<VB, FBWI> TDS;
+typedef CGAL::Exact_predicates_tag PT;
+typedef CGAL::Exact_intersections_tag IT;
+typedef CGAL::Constrained_Delaunay_triangulation_2<K, TDS, PT> CDT;
+typedef CGAL::Triangulation_hierarchy_2<CDT> CDTH;
+typedef CGAL::Constrained_triangulation_plus_2<CDTH> Triangulation;
+typedef CGAL::Snap_rounding_traits_2<K> SRT;
+
+typedef Triangulation::Point Point;
+typedef K::Segment_2 Segment;
+typedef K::Vector_2 Vector;
+
+// Non CGAL types
+typedef std::vector<std::pair<std::vector<Triangulation::Vertex_handle>, std::vector<std::vector<Triangulation::Vertex_handle> > > > TaggingVector;
+#endif
diff --git a/icon.png b/icon.png
new file mode 100644
index 0000000..3d62edc
Binary files /dev/null and b/icon.png differ
diff --git a/prepair.cpp b/prepair.cpp
new file mode 100644
index 0000000..5528a5c
--- /dev/null
+++ b/prepair.cpp
@@ -0,0 +1,214 @@
+/*
+ Copyright (c) 2009-2013,
+ Ken Arroyo Ohori g.a.k.arroyoohori at tudelft.nl
+ Hugo Ledoux h.ledoux at tudelft.nl
+ Martijn Meijers b.m.meijers at tudelft.nl
+ All rights reserved.
+
+ // This file is part of prepair: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Licensees holding a valid commercial license may use this file in
+ accordance with the commercial license agreement provided with
+ the software.
+
+ This file is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#include "PolygonRepair.h"
+
+double minArea = 0;
+double isrTolerance = 0;
+bool shpOut = false;
+bool computeRobustness = false;
+bool pointSet = false;
+bool timeResults = false;
+
+void usage();
+bool savetoshp(OGRMultiPolygon* multiPolygon);
+
+
+int main (int argc, const char * argv[]) {
+
+ time_t startTime = time(NULL);
+
+ if (argc < 2 || strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--help") == 0) {
+ usage();
+ return(0);
+ }
+
+ OGRGeometry *geometry;
+
+ for (int argNum = 1; argNum < argc; ++argNum) {
+ //-- whether to compute the robustness or not
+ if (strcmp(argv[argNum], "--robustness") == 0) {
+ computeRobustness = true;
+ }
+
+ //-- whether to use the point set topology paradigm or not
+ //-- if not, odd-even paradigm is used by default
+ else if (strcmp(argv[argNum], "--setdiff") == 0) {
+ pointSet = true;
+ }
+
+ //-- mininum area to keep in output
+ else if (strcmp(argv[argNum], "--minarea") == 0) {
+ minArea = atof(argv[argNum+1]);
+ ++argNum;
+ }
+
+ //-- ISR snapping tolerance
+ else if (strcmp(argv[argNum], "--isr") == 0) {
+ isrTolerance = atof(argv[argNum+1]);
+ ++argNum;
+ // TODO : scale dataset if tolerance < 1.0 because of CGAL bug
+ }
+
+ //-- output a shapefile (out.shp) instead of a WKT
+ else if (strcmp(argv[argNum], "--shpOut") == 0) {
+ shpOut = true;
+ }
+
+ //-- time the results
+ else if (strcmp(argv[argNum], "--time") == 0) {
+ timeResults = true;
+ }
+
+ //-- reading from WKT passed directly
+ else if (strcmp(argv[argNum], "--wkt") == 0) {
+ unsigned int bufferSize = 100000000;
+ char *inputWKT = (char *)malloc(bufferSize*sizeof(char *));
+ strcpy(inputWKT, argv[argNum+1]);
+ ++argNum;
+ OGRGeometryFactory::createFromWkt(&inputWKT, NULL, &geometry);
+ if (geometry == NULL) {
+ std::cout << "Error: WKT is not valid" << std::endl;
+ return 1;
+ }
+ }
+
+ //-- reading from WKT stored in first line of a text file
+ else if (strcmp(argv[argNum], "-f") == 0) {
+ unsigned int bufferSize = 100000000;
+ char *inputWKT = (char *)malloc(bufferSize*sizeof(char *));
+ if (argNum + 1 <= argc - 1 && argv[argNum+1][0] != '-') {
+ std::ifstream infile(argv[argNum+1], std::ifstream::in);
+ infile.getline(inputWKT, bufferSize);
+ ++argNum;
+ } else {
+ std::cerr << "Error: Missing input file name." << std::endl;
+ return 1;
+ }
+ OGRGeometryFactory::createFromWkt(&inputWKT, NULL, &geometry);
+ if (geometry == NULL) {
+ std::cout << "Error: WKT is not valid" << std::endl;
+ return 1;
+ }
+ }
+
+ //-- reading from a ogr dataset (most supported: shp, geojson, gml, etc)
+ else if (strcmp(argv[argNum], "--ogr") == 0) {
+ OGRRegisterAll();
+ OGRDataSource *dataSource = OGRSFDriverRegistrar::Open(argv[argNum+1], false);
+ ++argNum;
+ if (dataSource == NULL) {
+ std::cerr << "Error: Could not open file." << std::endl;
+ return false;
+ }
+ OGRLayer *dataLayer = dataSource->GetLayer(0); //-- get first layer
+ dataLayer->ResetReading();
+ //-- Reads all features in this layer
+ OGRFeature *feature;
+ //-- get first feature
+ if (dataLayer->GetFeatureCount(true) > 1)
+ std::cout << "Reading only the first feature in the shapefile." << std::endl;
+ feature = dataLayer->GetNextFeature();
+ if (feature->GetGeometryRef()->getGeometryType() == wkbPolygon) {
+ geometry = static_cast<OGRPolygon *>(feature->GetGeometryRef());feature->GetGeometryRef();
+ }
+ else {
+ std::cout << "First feature ain't a POLYGON." << std::endl;
+ return(0);
+ }
+
+ }
+
+ else {
+ usage();
+ return(0);
+ }
+ }
+
+ if (!timeResults) startTime = 0;
+
+ PolygonRepair prepair;
+
+ //-- compute robustness
+ if (computeRobustness == true)
+ std::cout << "Robustness of input polygon: " << sqrt(prepair.computeRobustness(geometry)) <<std::endl;
+
+ OGRGeometry *snappedGeometry;
+ if (isrTolerance != 0) {
+ snappedGeometry = prepair.isr(geometry, isrTolerance);
+ } else {
+ snappedGeometry = geometry;
+ }
+
+
+ OGRMultiPolygon *outPolygons;
+ if (pointSet) {
+ outPolygons = prepair.repairPointSet(snappedGeometry, startTime);
+ } else {
+ outPolygons = prepair.repairOddEven(snappedGeometry, startTime);
+ }
+
+ if (minArea > 0) {
+ prepair.removeSmallPolygons(outPolygons, minArea);
+ }
+
+ //-- output well known text
+ if (shpOut) {
+ prepair.saveToShp(outPolygons, "out.shp");
+ }
+ else {
+ char *outputWKT;
+ outPolygons->exportToWkt(&outputWKT);
+ std::cout << outputWKT << std::endl;
+ }
+
+
+ //-- compute robustness
+ if (computeRobustness == true)
+ std::cout << "Robustness of output polygon: " << sqrt(prepair.computeRobustness()) <<std::endl;
+
+ //-- time results
+ if (timeResults) {
+ time_t totalTime = time(NULL)-startTime;
+ std::cout << "Done! Process finished in " << totalTime/60 << " minutes " << totalTime%60 << " seconds." << std::endl;
+ }
+
+ return 0;
+}
+
+void usage() {
+ std::cout << "=== prepair Help ===\n" << std::endl;
+ std::cout << "Usage: prepair --wkt 'POLYGON(0 0, 1 0, 1 1, 0 0)'" << std::endl;
+ std::cout << "OR" << std::endl;
+ std::cout << "Usage: prepair -f infile.txt (infile.txt must contain one WKT on the 1st line)" << std::endl;
+ std::cout << "OR" << std::endl;
+ std::cout << "Usage: prepair --ogr infile.shp (first polygon of infile.shp is processed)" << std::endl;
+ std::cout << "================================================================================" << std::endl;
+ std::cout << "Additional options:" << std::endl;
+ std::cout << "--robustness Compute the robustness of the input/output" << std::endl;
+ std::cout << "--setdiff Uses the point set topology paradigm (default: odd-even paradigm)" << std::endl;
+ std::cout << "--minarea AREA Only output polygons larger than AREA" << std::endl;
+ std::cout << "--isr GRIDSIZE Snap round the input before repairing" << std::endl;
+ std::cout << "--time Benchmark the different stages of the process" << std::endl;
+
+}
+
+
--
Alioth's /usr/local/bin/git-commit-notice on /srv/git.debian.org/git/pkg-grass/prepair.git
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