92 lines
1.9 KiB
C++
92 lines
1.9 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) 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/edgegraph/EdgeGraph.h>
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#include <geos/export.h>
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#include <string>
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#include <cassert>
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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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class LineString;
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class Geometry;
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class GeometryCollection;
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}
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}
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namespace geos {
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namespace edgegraph { // geos.edgegraph
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/**
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* Builds an edge graph from geometries containing edges.
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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 EdgeGraphBuilder {
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private:
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/* members */
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std::unique_ptr<EdgeGraph> graph;
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public:
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EdgeGraphBuilder() :
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graph(new EdgeGraph())
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{};
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static std::unique_ptr<EdgeGraph> build(const geom::GeometryCollection* geoms);
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std::unique_ptr<EdgeGraph> getGraph();
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/**
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* Adds the edges of a Geometry to the graph.
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* May be called multiple times.
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* Any dimension of Geometry may be added; the constituent edges are
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* extracted.
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*
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* @param geometry geometry to be added
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*/
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void add(const geom::Geometry* geometry);
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void add(const geom::LineString* linestring);
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/**
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* Adds the edges in a collection of {@link geom::Geometry} to the graph.
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* May be called multiple times.
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* Any dimension of Geometry may be added.
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*
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* @param geometries the geometries to be added
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*/
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void add(const geom::GeometryCollection* geometries);
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};
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} // namespace geos.edgegraph
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} // namespace geos
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