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) = delete;
    SegmentNodeList& operator=(const SegmentNodeList& rhs) = delete;
 
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