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104 lines
2.5 KiB
C
104 lines
2.5 KiB
C
1 month ago
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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) 2005-2006 Refractions Research Inc.
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* Copyright (C) 2001-2002 Vivid Solutions 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/valid/QuadtreeNestedRingTester.java rev. 1.12 (JTS-1.10)
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*
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**********************************************************************/
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#ifndef GEOS_OP_QUADTREENESTEDRINGTESTER_H
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#define GEOS_OP_QUADTREENESTEDRINGTESTER_H
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#include <geos/export.h>
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#include <geos/geom/Envelope.h> // for composition
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#include <vector>
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#ifdef _MSC_VER
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#pragma warning(push)
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#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
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#endif
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// Forward declarations
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namespace geos {
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namespace geom {
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class LinearRing;
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class Coordinate;
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}
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namespace index {
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namespace quadtree {
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class Quadtree;
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}
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}
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namespace geomgraph {
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class GeometryGraph;
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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 valid { // geos::operation::valid
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/** \brief
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* Tests whether any of a set of [LinearRings](@ref geom::LinearRing) are nested
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* inside another ring in the set, using a [Quadtree](@ref index::quadtree::Quadtree)
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* index to speed up the comparisons.
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*
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*/
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class GEOS_DLL QuadtreeNestedRingTester {
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public:
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/// Caller retains ownership of GeometryGraph
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QuadtreeNestedRingTester(geomgraph::GeometryGraph* newGraph);
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~QuadtreeNestedRingTester();
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/*
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* Be aware that the returned Coordinate (if != NULL)
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* will point to storage owned by one of the LinearRing
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* previously added. If you destroy them, this
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* will point to an invalid memory address.
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*/
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geom::Coordinate* getNestedPoint();
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void add(const geom::LinearRing* ring);
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bool isNonNested();
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private:
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geomgraph::GeometryGraph* graph; // used to find non-node vertices
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std::vector<const geom::LinearRing*> rings;
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geom::Envelope totalEnv;
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index::quadtree::Quadtree* qt;
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geom::Coordinate* nestedPt;
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void buildQuadtree();
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};
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} // namespace geos::operation::valid
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} // namespace geos::operation
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} // namespace geos
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#ifdef _MSC_VER
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#pragma warning(pop)
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#endif
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#endif // GEOS_OP_QUADTREENESTEDRINGTESTER_H
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