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130 lines
3.5 KiB
C++
130 lines
3.5 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) 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/SweeplineNestedRingTester.java rev. 1.12 (JTS-1.10)
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*
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**********************************************************************/
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#ifndef GEOS_OP_SWEEPLINENESTEDRINGTESTER_H
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#define GEOS_OP_SWEEPLINENESTEDRINGTESTER_H
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#include <geos/export.h>
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#include <geos/geom/Envelope.h> // for inline
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//#include <geos/indexSweepline.h> // for inline and inheritance
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#include <geos/index/sweepline/SweepLineOverlapAction.h> // for inheritance
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#include <geos/index/sweepline/SweepLineIndex.h> // for inlines
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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 Envelope;
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class Coordinate;
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}
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namespace index {
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namespace sweepline {
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class SweepLineIndex;
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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
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* nested inside another ring in the set, using an
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* [SweepLineIndex](@ref index::sweepline::SweepLineIndex) to speed up
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* the comparisons.
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*/
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class GEOS_DLL SweeplineNestedRingTester {
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private:
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geomgraph::GeometryGraph* graph; // used to find non-node vertices
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std::vector<geom::LinearRing*> rings;
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index::sweepline::SweepLineIndex* sweepLine;
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geom::Coordinate* nestedPt;
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void buildIndex();
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SweeplineNestedRingTester(const SweeplineNestedRingTester&) = delete;
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SweeplineNestedRingTester& operator=(const SweeplineNestedRingTester&) = delete;
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public:
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SweeplineNestedRingTester(geomgraph::GeometryGraph* newGraph)
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:
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graph(newGraph),
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rings(),
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sweepLine(new index::sweepline::SweepLineIndex()),
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nestedPt(nullptr)
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{}
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~SweeplineNestedRingTester()
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{
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delete sweepLine;
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}
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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*
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getNestedPoint()
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{
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return nestedPt;
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}
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void
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add(geom::LinearRing* ring)
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{
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rings.push_back(ring);
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}
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bool isNonNested();
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bool isInside(geom::LinearRing* innerRing, geom::LinearRing* searchRing);
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class OverlapAction: public index::sweepline::SweepLineOverlapAction {
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public:
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bool isNonNested;
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OverlapAction(SweeplineNestedRingTester* p);
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void overlap(index::sweepline::SweepLineInterval* s0,
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index::sweepline::SweepLineInterval* s1) override;
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private:
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SweeplineNestedRingTester* parent;
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};
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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_SWEEPLINENESTEDRINGTESTER_H
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