81 lines
1.6 KiB
C
81 lines
1.6 KiB
C
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/**********************************************************************
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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) 2020 Paul Ramsey <pramsey@cleverelephant.ca>
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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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#pragma once
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#include <geos/export.h>
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#include <iostream>
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// Forward declarations
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namespace geos {
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namespace geom {
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class Coordinate;
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}
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}
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using geos::geom::Coordinate;
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namespace geos { // geos.
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namespace triangulate { // geos.triangulate
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namespace tri { // geos.triangulate.tri
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/**
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* Represents an edge in a {@link Tri},
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* to be used as a key for looking up Tris
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* while building a triangulation.
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* The edge value is normalized to allow lookup
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* of adjacent triangles.
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*
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* @author mdavis
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*/
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class GEOS_DLL TriEdge {
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private:
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void normalize();
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public:
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// Members
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Coordinate p0;
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Coordinate p1;
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TriEdge(const Coordinate& a, const Coordinate& b)
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: p0(a)
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, p1(b)
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{
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normalize();
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}
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struct GEOS_DLL HashCode {
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std::size_t operator()(const TriEdge& te) const;
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};
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friend bool operator == (const TriEdge& te0, const TriEdge& te1);
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friend std::ostream& operator << (std::ostream& os, const TriEdge& te);
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};
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} // namespace geos.triangulate.tri
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} // namespace geos.triangulate
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} // namespace geos
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