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126 lines
3.1 KiB
C++
126 lines
3.1 KiB
C++
/**********************************************************************
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*
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* GEOS - Geometry Engine Open Source
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* http://geos.osgeo.org
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*
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* Copyright (C) 2006 Refractions Research Inc.
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*
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* This is free software; you can redistribute and/or modify it under
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* the terms of the GNU Lesser General Public Licence as published
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* by the Free Software Foundation.
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* See the COPYING file for more information.
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*
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**********************************************************************
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*
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* Last port: noding/SegmentNode.java 4667170ea (JTS-1.17)
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*
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**********************************************************************/
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#ifndef GEOS_NODING_SEGMENTNODE_H
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#define GEOS_NODING_SEGMENTNODE_H
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#include <geos/export.h>
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#include <vector>
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#include <iostream>
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#include <geos/inline.h>
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#include <geos/geom/Coordinate.h>
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// Forward declarations
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namespace geos {
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namespace noding {
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class NodedSegmentString;
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}
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}
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namespace geos {
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namespace noding { // geos.noding
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/**
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* \brief
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* Represents an intersection point between two NodedSegmentString.
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*
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* Final class.
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*/
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class GEOS_DLL SegmentNode {
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private:
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const NodedSegmentString& segString;
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int segmentOctant;
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bool isInteriorVar;
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// Declare type as noncopyable
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SegmentNode(const SegmentNode& other) = delete;
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SegmentNode& operator=(const SegmentNode& rhs) = delete;
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public:
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friend std::ostream& operator<< (std::ostream& os, const SegmentNode& n);
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/// the point of intersection (own copy)
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geom::Coordinate coord;
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/// the index of the containing line segment in the parent edge
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size_t segmentIndex;
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/// Construct a node on the given NodedSegmentString
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///
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/// @param ss the parent NodedSegmentString
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///
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/// @param nCoord the coordinate of the intersection, will be copied
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///
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/// @param nSegmentIndex the index of the segment on parent
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/// NodedSegmentString
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/// where the Node is located.
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///
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/// @param nSegmentOctant
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///
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SegmentNode(const NodedSegmentString& ss,
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const geom::Coordinate& nCoord,
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size_t nSegmentIndex, int nSegmentOctant);
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~SegmentNode() {}
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/// \brief
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/// Return true if this Node is *internal* (not on the boundary)
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/// of the corresponding segment. Currently only the *first*
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/// segment endpoint is checked, actually.
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///
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bool
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isInterior() const
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{
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return isInteriorVar;
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}
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bool isEndPoint(unsigned int maxSegmentIndex) const;
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/**
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* @return -1 this EdgeIntersection is located before
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* the argument location
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* @return 0 this EdgeIntersection is at the argument location
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* @return 1 this EdgeIntersection is located after the
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* argument location
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*/
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int compareTo(const SegmentNode& other);
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//string print() const;
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};
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std::ostream& operator<< (std::ostream& os, const SegmentNode& n);
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struct GEOS_DLL SegmentNodeLT {
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bool
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operator()(SegmentNode* s1, SegmentNode* s2) const
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{
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return s1->compareTo(*s2) < 0;
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}
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};
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} // namespace geos.noding
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} // namespace geos
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#endif // GEOS_NODING_SEGMENTNODE_H
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