SegmentNodeList.h

00001 /**********************************************************************
00002  *
00003  * GEOS - Geometry Engine Open Source
00004  * http://geos.osgeo.org
00005  *
00006  * Copyright (C) 2006      Refractions Research Inc.
00007  *
00008  * This is free software; you can redistribute and/or modify it under
00009  * the terms of the GNU Lesser General Public Licence as published
00010  * by the Free Software Foundation. 
00011  * See the COPYING file for more information.
00012  *
00013  **********************************************************************
00014  *
00015  * Last port: noding/SegmentNodeList.java rev. 1.8 (JTS-1.10)
00016  *
00017  **********************************************************************/
00018 
00019 #ifndef GEOS_NODING_SEGMENTNODELIST_H
00020 #define GEOS_NODING_SEGMENTNODELIST_H
00021 
00022 #include <geos/export.h>
00023 
00024 #include <geos/inline.h>
00025 
00026 #include <cassert>
00027 #include <iostream>
00028 #include <vector>
00029 #include <set>
00030 
00031 #include <geos/noding/SegmentNode.h> // for composition
00032 
00033 #ifdef _MSC_VER
00034 #pragma warning(push)
00035 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
00036 #endif
00037 
00038 // Forward declarations
00039 namespace geos {
00040         namespace geom {
00041                 class CoordinateSequence;
00042         }
00043         namespace noding {
00044                 class SegmentString;
00045                 class NodedSegmentString;
00046         }
00047 }
00048 
00049 namespace geos {
00050 namespace noding { // geos::noding
00051 
00056 class GEOS_DLL SegmentNodeList {
00057 private:
00058         std::set<SegmentNode*,SegmentNodeLT> nodeMap;
00059 
00060         // the parent edge
00061         const NodedSegmentString& edge; 
00062 
00069         void checkSplitEdgesCorrectness(std::vector<SegmentString*>& splitEdges);
00070 
00079         SegmentString* createSplitEdge(SegmentNode *ei0, SegmentNode *ei1);
00080 
00089         void addCollapsedNodes();
00090 
00095         void findCollapsesFromExistingVertices(
00096                         std::vector<std::size_t>& collapsedVertexIndexes);
00097 
00105         void findCollapsesFromInsertedNodes(
00106                 std::vector<std::size_t>& collapsedVertexIndexes);
00107 
00108         bool findCollapseIndex(SegmentNode& ei0, SegmentNode& ei1,
00109                 size_t& collapsedVertexIndex);
00110 
00111     // Declare type as noncopyable
00112     SegmentNodeList(const SegmentNodeList& other);
00113     SegmentNodeList& operator=(const SegmentNodeList& rhs);
00114 
00115 public:
00116 
00117         friend std::ostream& operator<< (std::ostream& os, const SegmentNodeList& l);
00118 
00119         typedef std::set<SegmentNode*,SegmentNodeLT> container;
00120         typedef container::iterator iterator;
00121         typedef container::const_iterator const_iterator;
00122 
00123         SegmentNodeList(const NodedSegmentString* newEdge): edge(*newEdge) {}
00124 
00125         SegmentNodeList(const NodedSegmentString& newEdge): edge(newEdge) {}
00126 
00127         const NodedSegmentString& getEdge() const { return edge; }
00128 
00129         // TODO: Is this a final class ?
00130         // Should remove the virtual in that case
00131         virtual ~SegmentNodeList();
00132 
00143         SegmentNode* add(const geom::Coordinate& intPt, std::size_t segmentIndex);
00144 
00145         SegmentNode* add(const geom::Coordinate *intPt, std::size_t segmentIndex) {
00146                 return add(*intPt, segmentIndex);
00147         }
00148 
00149         /*
00150          * returns the set of SegmentNodes
00151          */
00152         //replaces iterator()
00153         // TODO: obsolete this function
00154         std::set<SegmentNode*,SegmentNodeLT>* getNodes() { return &nodeMap; }
00155 
00157         size_t size() const { return nodeMap.size(); }
00158 
00159         container::iterator begin() { return nodeMap.begin(); }
00160         container::const_iterator begin() const { return nodeMap.begin(); }
00161         container::iterator end() { return nodeMap.end(); }
00162         container::const_iterator end() const { return nodeMap.end(); }
00163 
00167         void addEndpoints();
00168 
00175         void addSplitEdges(std::vector<SegmentString*>& edgeList);
00176 
00177         void addSplitEdges(std::vector<SegmentString*>* edgeList) {
00178                 assert(edgeList);
00179                 addSplitEdges(*edgeList);
00180         }
00181 
00182         //string print();
00183 };
00184 
00185 std::ostream& operator<< (std::ostream& os, const SegmentNodeList& l);
00186 
00187 } // namespace geos::noding
00188 } // namespace geos
00189 
00190 #ifdef _MSC_VER
00191 #pragma warning(pop)
00192 #endif
00193 
00194 #endif

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