87 lines
1.7 KiB
C
87 lines
1.7 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/triangulate/tri/TriEdge.h>
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#include <geos/triangulate/tri/TriList.h>
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#include <memory>
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#include <unordered_map>
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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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namespace triangulate {
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namespace tri {
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class Tri;
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}
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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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* Builds a triangulation from a set of {@link Tri}s
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* by linking adjacent Tris.
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*
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* @author mdavis
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*
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*/
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class GEOS_DLL TriangulationBuilder {
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private:
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// Members
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std::unordered_map<TriEdge, Tri*, TriEdge::HashCode> triMap;
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// Methods
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Tri* find(const Coordinate& p0, const Coordinate& p1) const;
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void addAdjacent(Tri* tri, Tri* adj, const Coordinate& p0, const Coordinate& p1);
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public:
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TriangulationBuilder(TriList<Tri>& triList);
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TriangulationBuilder() {};
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void add(Tri* tri);
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/**
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* Builds the triangulation of a set of {@link Tri}s.
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*
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* @param triList the list of Tris
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*/
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static void build(TriList<Tri>& triList);
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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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