SubgraphDepthLocater.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2006 Refractions Research Inc.
 *
 * This is free software; you can redistribute and/or modify it under
 * the terms of the GNU Lesser General Public Licence as published
 * by the Free Software Foundation.
 * See the COPYING file for more information.
 *
 **********************************************************************
 *
 * Last port: operation/buffer/SubgraphDepthLocater.java r320 (JTS-1.12)
 *
 **********************************************************************/
 
#pragma once
 
#include <geos/export.h>
 
#include <vector>
 
#include <geos/geom/LineSegment.h> // for composition
 
// Forward declarations
namespace geos {
namespace geom {
class Coordinate;
}
namespace geomgraph {
class DirectedEdge;
}
namespace operation {
namespace buffer {
class BufferSubgraph;
class DepthSegment;
}
}
}
 
namespace geos {
namespace operation { // geos.operation
namespace buffer { // geos.operation.buffer
 
class GEOS_DLL SubgraphDepthLocater {
 
public:
 
    SubgraphDepthLocater(std::vector<BufferSubgraph*>* newSubgraphs)
        :
        subgraphs(newSubgraphs)
    {}
 
    ~SubgraphDepthLocater() {}
 
    int getDepth(const geom::Coordinate& p);
 
private:
 
    std::vector<BufferSubgraph*>* subgraphs;
 
    geom::LineSegment seg;
 
    void findStabbedSegments(const geom::Coordinate& stabbingRayLeftPt,
                             std::vector<DepthSegment*>& stabbedSegments);
 
    void findStabbedSegments(const geom::Coordinate& stabbingRayLeftPt,
                             std::vector<geomgraph::DirectedEdge*>* dirEdges,
                             std::vector<DepthSegment*>& stabbedSegments);
 
    void findStabbedSegments(const geom::Coordinate& stabbingRayLeftPt,
                             geomgraph::DirectedEdge* dirEdge,
                             std::vector<DepthSegment*>& stabbedSegments);
 
};
 
 
} // namespace geos::operation::buffer
} // namespace geos::operation
} // namespace geos