IncrementalDelaunayTriangulator.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/IncrementalDelaunayTriangulator.java r524
 *
 **********************************************************************/

#pragma once

#include <list>

#include <geos/triangulate/quadedge/Vertex.h>


namespace geos {
namespace triangulate { //geos.triangulate

namespace quadedge {
class QuadEdge;
class QuadEdgeSubdivision;
}

class GEOS_DLL IncrementalDelaunayTriangulator {
private:
    quadedge::QuadEdgeSubdivision* subdiv;
    bool isUsingTolerance;
    bool m_isForceConvex;

public:
    IncrementalDelaunayTriangulator(quadedge::QuadEdgeSubdivision* subdiv);

    typedef std::vector<quadedge::Vertex> VertexList;

    void forceConvex(bool isForceConvex);

    void insertSites(const VertexList& vertices);

    quadedge::QuadEdge& insertSite(const quadedge::Vertex& v);

private:

    bool isConcaveBoundary(const quadedge::QuadEdge& e) const;

    bool isConcaveAtOrigin(const quadedge::QuadEdge& e) const;

    bool isBetweenFrameAndInserted(const quadedge::QuadEdge& e, const quadedge::Vertex& vInsert) const;
};

} //namespace geos.triangulate
} //namespace goes