[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.
+
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+
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+software and other kinds of works.
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+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
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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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