GEOS: PolygonBuilder.h Source File

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# PolygonBuilder.h

    00001 /**********************************************************************
    00002  * $Id: PolygonBuilder.h 2556 2009-06-06 22:22:28Z strk $
    00003  *
    00004  * GEOS - Geometry Engine Open Source
    00005  * http://geos.refractions.net
    00006  *
    00007  * Copyright (C) 2006 Refractions Research Inc.
    00008  *
    00009  * This is free software; you can redistribute and/or modify it under
    00010  * the terms of the GNU Lesser General Public Licence as published
    00011  * by the Free Software Foundation.
    00012  * See the COPYING file for more information.
    00013  *
    00014  **********************************************************************
    00015  *
    00016  * Last port: operation/overlay/PolygonBuilder.java rev. 1.20 (JTS-1.10)
    00017  *
    00018  **********************************************************************/
    00019
    00020 #ifndef GEOS_OP_OVERLAY_POLYGONBUILDER_H
    00021 #define GEOS_OP_OVERLAY_POLYGONBUILDER_H
    00022
    00023 #include <geos/export.h>
    00024
    00025 #include <vector>
    00026
    00027 // Forward declarations
    00028 namespace geos {
    00029         namespace geom {
    00030                 class Geometry;
    00031                 class Coordinate;
    00032                 class GeometryFactory;
    00033         }
    00034         namespace geomgraph {
    00035                 class EdgeRing;
    00036                 class Node;
    00037                 class PlanarGraph;
    00038                 class DirectedEdge;
    00039         }
    00040         namespace operation {
    00041                 namespace overlay {
    00042                         class MaximalEdgeRing;
    00043                         class MinimalEdgeRing;
    00044                 }
    00045         }
    00046 }
    00047
    00048 namespace geos {
    00049 namespace operation { // geos::operation
    00050 namespace overlay { // geos::operation::overlay
    00051
    00057 class GEOS_DLL PolygonBuilder {
    00058 public:
    00059
    00060         PolygonBuilder(const geom::GeometryFactory *newGeometryFactory);
    00061
    00062         ~PolygonBuilder();
    00063
    00069         void add(geomgraph::PlanarGraph *graph);
    00070             // throw(const TopologyException &)
    00071
    00077         void add(const std::vector<geomgraph::DirectedEdge*> *dirEdges,
    00078                         const std::vector<geomgraph::Node*> *nodes);
    00079                         // throw(const TopologyException &)
    00080
    00081         std::vector<geom::Geometry*>* getPolygons();
    00082
    00087         bool containsPoint(const geom::Coordinate& p);
    00088
    00089 private:
    00090
    00091         const geom::GeometryFactory *geometryFactory;
    00092
    00093         std::vector<geomgraph::EdgeRing*> shellList;
    00094
    00101         std::vector<MaximalEdgeRing*>* buildMaximalEdgeRings(
    00102                 const std::vector<geomgraph::DirectedEdge*> *dirEdges);
    00103                         // throw(const TopologyException &)
    00104
    00105         std::vector<MaximalEdgeRing*>* buildMinimalEdgeRings(
    00106                 std::vector<MaximalEdgeRing*> *maxEdgeRings,
    00107                 std::vector<geomgraph::EdgeRing*> *newShellList,
    00108                 std::vector<geomgraph::EdgeRing*> *freeHoleList);
    00120         geomgraph::EdgeRing* findShell(std::vector<MinimalEdgeRing*>* minEdgeRings);
    00121
    00133         void placePolygonHoles(geomgraph::EdgeRing *shell,
    00134                 std::vector<MinimalEdgeRing*> *minEdgeRings);
    00135
    00143         void sortShellsAndHoles(std::vector<MaximalEdgeRing*> *edgeRings,
    00144                 std::vector<geomgraph::EdgeRing*> *newShellList,
    00145                 std::vector<geomgraph::EdgeRing*> *freeHoleList);
    00146
    00161         void placeFreeHoles(std::vector<geomgraph::EdgeRing*>& newShellList,
    00162                 std::vector<geomgraph::EdgeRing*>& freeHoleList);
    00163                 // throw(const TopologyException&)
    00164
    00183         geomgraph::EdgeRing* findEdgeRingContaining(geomgraph::EdgeRing *testEr,
    00184                 std::vector<geomgraph::EdgeRing*>& newShellList);
    00185
    00186         std::vector<geom::Geometry*>* computePolygons(
    00187                         std::vector<geomgraph::EdgeRing*>& newShellList);
    00188
    00194 };
    00195
    00196
    00197
    00198 } // namespace geos::operation::overlay
    00199 } // namespace geos::operation
    00200 } // namespace geos
    00201
    00202 #endif // ndef GEOS_OP_OVERLAY_POLYGONBUILDER_H
    00203
    00204 /**********************************************************************
    00205  * $Log$
    00206  * Revision 1.3  2006/06/13 23:26:46  strk
    00207  * cleanups
    00208  *
    00209  * Revision 1.2  2006/03/20 12:33:45  strk
    00210  * Simplified some privat methods to use refs instead of pointers, added
    00211  * debugging section for failiures of holes/shells associations
    00212  *
    00213  * Revision 1.1  2006/03/17 13:24:59  strk
    00214  * opOverlay.h header splitted. Reduced header inclusions in operation/overlay implementation files. ElevationMatrixFilter code moved from own file to ElevationMatrix.cpp (ideally a class-private).
    00215  *
    00216  **********************************************************************/
    00217