81 lines
1.9 KiB
C
81 lines
1.9 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) 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: operation/overlay/MinimalEdgeRing.java rev. 1.13 (JTS-1.10)
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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 <geos/geomgraph/EdgeRing.h> // for inheritance
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#include <geos/geomgraph/DirectedEdge.h> // for inlines
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#include <vector>
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// Forward declarations
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namespace geos {
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namespace geom {
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class GeometryFactory;
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}
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namespace geomgraph {
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class DirectedEdge;
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class EdgeRing;
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}
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}
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namespace geos {
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namespace operation { // geos::operation
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namespace overlay { // geos::operation::overlay
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/** \brief
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* A ring of [Edges](@ref geomgraph::Edge) with the property that no node
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* has degree greater than 2.
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*
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* These are the form of rings required to represent polygons
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* under the OGC SFS spatial data model.
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*
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* @see operation::overlay::MaximalEdgeRing
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*
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*/
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class GEOS_DLL MinimalEdgeRing: public geomgraph::EdgeRing {
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public:
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MinimalEdgeRing(geomgraph::DirectedEdge* start,
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const geom::GeometryFactory* geometryFactory);
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~MinimalEdgeRing() override {};
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geomgraph::DirectedEdge* getNext(geomgraph::DirectedEdge* de) override
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{
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return de->getNextMin();
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};
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void setEdgeRing(geomgraph::DirectedEdge* de,
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geomgraph::EdgeRing* er) override
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{
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de->setMinEdgeRing(er);
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};
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};
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} // namespace geos::operation::overlay
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} // namespace geos::operation
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} // namespace geos
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