VoronoiDiagramBuilder.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/VoronoiDiagramBuilder.java r524
 *
 **********************************************************************/
 
#ifndef GEOS_TRIANGULATE_VORONOIDIAGRAMBUILDER_H
#define GEOS_TRIANGULATE_VORONOIDIAGRAMBUILDER_H
 
#include <geos/triangulate/quadedge/QuadEdgeSubdivision.h>
#include <geos/geom/Envelope.h> // for composition 
#include <memory>
#include <iostream>
 
namespace geos {
  namespace geom{
        class Geometry;
        class CoordinateSequence;
        class GeometryCollection;
        class GeometryFactory;
}
namespace triangulate { //geos.triangulate

class GEOS_DLL VoronoiDiagramBuilder{
public:
        VoronoiDiagramBuilder();
        
        ~VoronoiDiagramBuilder();
        
        void setSites(const geom::Geometry& geom);
        
        void setSites(const geom::CoordinateSequence& coords);
        
        void setClipEnvelope(const geom::Envelope* clipEnv);
        
        void setTolerance(double tolerance);
        
        std::auto_ptr<quadedge::QuadEdgeSubdivision> getSubdivision();

        std::auto_ptr<geom::GeometryCollection> getDiagram(const geom::GeometryFactory& geomFact);

        std::auto_ptr<geom::Geometry> getDiagramEdges(const geom::GeometryFactory& geomFact);
 
private:
 
        std::auto_ptr<geom::CoordinateSequence> siteCoords;
        double tolerance;
        std::auto_ptr<quadedge::QuadEdgeSubdivision> subdiv;
        const geom::Envelope* clipEnv; // externally owned
        geom::Envelope diagramEnv;
 
        void create();
        
        static std::auto_ptr<geom::GeometryCollection> 
                clipGeometryCollection(const geom::GeometryCollection& geom, const geom::Envelope& clipEnv);
 
};
 
} //namespace geos.triangulate
} //namespace geos
 
#endif //GEOS_TRIANGULATE_VORONOIDIAGRAMBUILDER_H