DelaunayTriangulationBuilder.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2012 Excensus LLC.
 *
 * This is free software; you can redistribute and/or modify it under
 * the terms of the GNU Lesser General Licence as published
 * by the Free Software Foundation. 
 * See the COPYING file for more information.
 *
 **********************************************************************
 *
 * Last port: triangulate/DelaunayTriangulationBuilder.java r524
 *
 **********************************************************************/
 
#ifndef GEOS_TRIANGULATE_DELAUNAYTRIANGULATIONBUILDER_H
#define GEOS_TRIANGULATE_DELAUNAYTRIANGULATIONBUILDER_H
 
#include <geos/triangulate/IncrementalDelaunayTriangulator.h>
 
 
namespace geos {
  namespace geom{
          class CoordinateSequence;
          class Geometry;
          class MultiLineString;
          class GeometryCollection;
          class GeometryFactory;
          class Envelope;
  }
  namespace triangulate { 
    namespace quadedge { 
      class QuadEdgeSubdivision;
    }
  }
}
 
namespace geos {
namespace triangulate { //geos.triangulate
 

class GEOS_DLL DelaunayTriangulationBuilder 
{
public:
        static geom::CoordinateSequence* extractUniqueCoordinates(const geom::Geometry& geom);
        
        static void unique(geom::CoordinateSequence& coords);
        
        static IncrementalDelaunayTriangulator::VertexList* toVertices(const geom::CoordinateSequence &coords);
        
private:
        geom::CoordinateSequence* siteCoords;
        double tolerance;
        quadedge::QuadEdgeSubdivision *subdiv;
        
public:
        DelaunayTriangulationBuilder();
 
        ~DelaunayTriangulationBuilder();
        
        void setSites(const geom::Geometry& geom);
        
        void setSites(const geom::CoordinateSequence& coords);
        
        inline void setTolerance(double tolerance)
        {
                this->tolerance = tolerance;
        }
        
private:
        void create();
        
public:
        quadedge::QuadEdgeSubdivision& getSubdivision();
        
        std::auto_ptr<geom::MultiLineString> getEdges(const geom::GeometryFactory &geomFact);
        
        std::auto_ptr<geom::GeometryCollection> getTriangles(const geom::GeometryFactory& geomFact);

 
        static geom::Envelope envelope(const geom::CoordinateSequence& coords);
 
};
 
} //namespace geos.triangulate
} //namespace goes
 
#endif //GEOS_TRIANGULATE_QUADEDGE_DELAUNAYTRIANGULATIONBUILDER_H