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SegmentNodeList.h

00001 /**********************************************************************
00002  * $Id: SegmentNodeList.h 2778 2009-12-03 19:44:00Z mloskot $
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: noding/SegmentNodeList.java rev. 1.8 (JTS-1.10)
00017  *
00018  **********************************************************************/
00019 
00020 #ifndef GEOS_NODING_SEGMENTNODELIST_H
00021 #define GEOS_NODING_SEGMENTNODELIST_H
00022 
00023 #include <geos/export.h>
00024 
00025 #include <geos/inline.h>
00026 
00027 #include <cassert>
00028 #include <iostream>
00029 #include <vector>
00030 #include <set>
00031 
00032 #include <geos/noding/SegmentNode.h> // for composition
00033 
00034 // Forward declarations
00035 namespace geos {
00036         namespace geom {
00037                 class CoordinateSequence;
00038         }
00039         namespace noding {
00040                 class SegmentString;
00041                 class NodedSegmentString;
00042         }
00043 }
00044 
00045 namespace geos {
00046 namespace noding { // geos::noding
00047 
00052 class GEOS_DLL SegmentNodeList {
00053 private:
00054         std::set<SegmentNode*,SegmentNodeLT> nodeMap;
00055 
00056         // the parent edge
00057         const NodedSegmentString& edge; 
00058 
00059         // This vector is here to keep track of created splitEdges
00060         std::vector<SegmentString*> splitEdges;
00061 
00062         // This vector is here to keep track of created Coordinates
00063         std::vector<geom::CoordinateSequence*> splitCoordLists;
00064 
00071         void checkSplitEdgesCorrectness(std::vector<SegmentString*>& splitEdges);
00072 
00079         SegmentString* createSplitEdge(SegmentNode *ei0, SegmentNode *ei1);
00080 
00089         void addCollapsedNodes();
00090 
00095         void findCollapsesFromExistingVertices(
00096                         std::vector<size_t>& collapsedVertexIndexes);
00097 
00105         void findCollapsesFromInsertedNodes(
00106                 std::vector<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, size_t segmentIndex);
00144 
00145         SegmentNode* add(const geom::Coordinate *intPt, 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 GEOS_INLINE
00191 //# include "geos/noding/SegmentNodeList.inl"
00192 //#endif
00193 
00194 #endif
00195 
00196 /**********************************************************************
00197  * $Log$
00198  * Revision 1.4  2006/06/12 11:29:23  strk
00199  * unsigned int => size_t
00200  *
00201  * Revision 1.3  2006/05/04 07:41:56  strk
00202  * const-correct size() method for SegmentNodeList
00203  *
00204  * Revision 1.2  2006/03/24 09:52:41  strk
00205  * USE_INLINE => GEOS_INLINE
00206  *
00207  * Revision 1.1  2006/03/09 16:46:49  strk
00208  * geos::geom namespace definition, first pass at headers split
00209  *
00210  **********************************************************************/
00211 

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