SegmentNodeList.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: noding/SegmentNodeList.java rev. 1.8 (JTS-1.10)
 *
 **********************************************************************/
 
#ifndef GEOS_NODING_SEGMENTNODELIST_H
#define GEOS_NODING_SEGMENTNODELIST_H
 
#include <geos/export.h>
 
#include <geos/inline.h>
 
#include <cassert>
#include <iostream>
#include <vector>
#include <set>
 
#include <geos/noding/SegmentNode.h> // for composition
 
#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 CoordinateSequence;
        }
        namespace noding {
                class SegmentString;
                class NodedSegmentString;
        }
}
 
namespace geos {
namespace noding { // geos::noding

class GEOS_DLL SegmentNodeList {
private:
        std::set<SegmentNode*,SegmentNodeLT> nodeMap;
 
        // the parent edge
        const NodedSegmentString& edge; 

        void checkSplitEdgesCorrectness(std::vector<SegmentString*>& splitEdges);

        SegmentString* createSplitEdge(SegmentNode *ei0, SegmentNode *ei1);

        void addCollapsedNodes();

        void findCollapsesFromExistingVertices(
                        std::vector<std::size_t>& collapsedVertexIndexes);

        void findCollapsesFromInsertedNodes(
                std::vector<std::size_t>& collapsedVertexIndexes);
 
        bool findCollapseIndex(SegmentNode& ei0, SegmentNode& ei1,
                size_t& collapsedVertexIndex);
 
    // Declare type as noncopyable
    SegmentNodeList(const SegmentNodeList& other);
    SegmentNodeList& operator=(const SegmentNodeList& rhs);
 
public:
 
        friend std::ostream& operator<< (std::ostream& os, const SegmentNodeList& l);
 
        typedef std::set<SegmentNode*,SegmentNodeLT> container;
        typedef container::iterator iterator;
        typedef container::const_iterator const_iterator;
 
        SegmentNodeList(const NodedSegmentString* newEdge): edge(*newEdge) {}
 
        SegmentNodeList(const NodedSegmentString& newEdge): edge(newEdge) {}
 
        const NodedSegmentString& getEdge() const { return edge; }
 
        // TODO: Is this a final class ?
        // Should remove the virtual in that case
        virtual ~SegmentNodeList();

        SegmentNode* add(const geom::Coordinate& intPt, std::size_t segmentIndex);
 
        SegmentNode* add(const geom::Coordinate *intPt, std::size_t segmentIndex) {
                return add(*intPt, segmentIndex);
        }
 
        /*
         * returns the set of SegmentNodes
         */
        //replaces iterator()
        // TODO: obsolete this function
        std::set<SegmentNode*,SegmentNodeLT>* getNodes() { return &nodeMap; }

        size_t size() const { return nodeMap.size(); }
 
        container::iterator begin() { return nodeMap.begin(); }
        container::const_iterator begin() const { return nodeMap.begin(); }
        container::iterator end() { return nodeMap.end(); }
        container::const_iterator end() const { return nodeMap.end(); }

        void addEndpoints();

        void addSplitEdges(std::vector<SegmentString*>& edgeList);
 
        void addSplitEdges(std::vector<SegmentString*>* edgeList) {
                assert(edgeList);
                addSplitEdges(*edgeList);
        }
 
        //string print();
};
 
std::ostream& operator<< (std::ostream& os, const SegmentNodeList& l);
 
} // namespace geos::noding
} // namespace geos
 
#ifdef _MSC_VER
#pragma warning(pop)
#endif
 
#endif