RelateComputer.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2011 Sandro Santilli <strk@keybit.net>
 * Copyright (C) 2006 Refractions Research Inc.
 * Copyright (C) 2001-2002 Vivid Solutions 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/relate/RelateComputer.java rev. 1.24 (JTS-1.10)
 *
 **********************************************************************/
 
#ifndef GEOS_OP_RELATE_RELATECOMPUTER_H
#define GEOS_OP_RELATE_RELATECOMPUTER_H
 
#include <geos/export.h>
 
#include <geos/algorithm/PointLocator.h> // for RelateComputer composition
#include <geos/algorithm/LineIntersector.h> // for RelateComputer composition
#include <geos/geomgraph/NodeMap.h> // for RelateComputer composition
#include <geos/geom/Coordinate.h> // for RelateComputer composition
 
#include <vector>
#include <memory>
 
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
#endif
 
// Forward declarations
namespace geos {
        namespace geom {
                class IntersectionMatrix;
                class Geometry;
        }
        namespace geomgraph {
                class GeometryGraph;
                class Edge;
                class EdgeEnd;
                class Node;
                namespace index {
                        class SegmentIntersector;
                }
        }
}
 
 
namespace geos {
namespace operation { // geos::operation
namespace relate { // geos::operation::relate

class GEOS_DLL RelateComputer {
public:
        RelateComputer(std::vector<geomgraph::GeometryGraph*> *newArg);
        ~RelateComputer();
 
        geom::IntersectionMatrix* computeIM();
private:
 
        algorithm::LineIntersector li;
 
        algorithm::PointLocator ptLocator;

        std::vector<geomgraph::GeometryGraph*> *arg; 
 
        geomgraph::NodeMap nodes;

        std::auto_ptr<geom::IntersectionMatrix> im;
 
        std::vector<geomgraph::Edge*> isolatedEdges;

        geom::Coordinate invalidPoint;
 
        void insertEdgeEnds(std::vector<geomgraph::EdgeEnd*> *ee);
 
        void computeProperIntersectionIM(
            geomgraph::index::SegmentIntersector *intersector,
            geom::IntersectionMatrix *imX);
 
        void copyNodesAndLabels(int argIndex);
        void computeIntersectionNodes(int argIndex);
        void labelIntersectionNodes(int argIndex);

        void computeDisjointIM(geom::IntersectionMatrix *imX);
 
        void labelNodeEdges();

        void updateIM(geom::IntersectionMatrix& imX);

        void labelIsolatedEdges(int thisIndex,int targetIndex);

        void labelIsolatedEdge(geomgraph::Edge *e,int targetIndex,
                               const geom::Geometry *target);

        void labelIsolatedNodes();

        void labelIsolatedNode(geomgraph::Node *n,int targetIndex);
};
 
 
} // namespace geos:operation:relate
} // namespace geos:operation
} // namespace geos
 
#ifdef _MSC_VER
#pragma warning(pop)
#endif
 
#endif // GEOS_OP_RELATE_RELATECOMPUTER_H