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
 *
 **********************************************************************/
 
#pragma once
 
#include <geos/triangulate/IncrementalDelaunayTriangulator.h>
#include <geos/geom/CoordinateSequence.h>
 
#include <memory>
 
namespace geos {
namespace geom {
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 std::unique_ptr<geom::CoordinateSequence> extractUniqueCoordinates(const geom::Geometry& geom);
 
    static IncrementalDelaunayTriangulator::VertexList toVertices(const geom::CoordinateSequence& coords);
 
    static std::unique_ptr<geom::CoordinateSequence> unique(const geom::CoordinateSequence* seq);
 
private:
    std::unique_ptr<geom::CoordinateSequence> siteCoords;
    double tolerance;
    std::unique_ptr<quadedge::QuadEdgeSubdivision> subdiv;
 
public:
    DelaunayTriangulationBuilder();
 
    ~DelaunayTriangulationBuilder() = default;
 
    void setSites(const geom::Geometry& geom);
 
    void setSites(const geom::CoordinateSequence& coords);
 
    inline void
    setTolerance(double p_tolerance)
    {
        this->tolerance = p_tolerance;
    }
 
private:
    void create();
 
public:
    quadedge::QuadEdgeSubdivision& getSubdivision();
 
    std::unique_ptr<geom::MultiLineString> getEdges(const geom::GeometryFactory& geomFact);
 
    std::unique_ptr<geom::GeometryCollection> getTriangles(const geom::GeometryFactory& geomFact);
 
    static geom::Envelope envelope(const geom::CoordinateSequence& coords);
 
};
 
} //namespace geos.triangulate
} //namespace goes