84 lines
1.8 KiB
C++
84 lines
1.8 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) 2021 Paul Ramsey <pramsey@cleverelephant.ca>
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* Copyright (C) 2021 Martin Davis
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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/export.h>
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#include <geos/index/strtree/TemplateSTRtree.h>
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#include <memory>
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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 Polygon;
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class LinearRing;
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}
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}
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namespace geos { // geos.
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namespace operation { // geos.operation
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namespace valid { // geos.operation.valid
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using geos::geom::Polygon;
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using geos::geom::LinearRing;
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using geos::geom::CoordinateXY;
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class GEOS_DLL IndexedNestedHoleTester {
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private:
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const Polygon* polygon;
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index::strtree::TemplateSTRtree<const LinearRing*> index;
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CoordinateXY nestedPt;
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void loadIndex();
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public:
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IndexedNestedHoleTester(const Polygon* p_polygon)
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: polygon(p_polygon)
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{
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loadIndex();
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}
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/**
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* Gets a point on a nested hole, if one exists.
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*
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* @return a point on a nested hole, or null if none are nested
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*/
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const CoordinateXY& getNestedPoint() { return nestedPt; }
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/**
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* Tests if any hole is nested (contained) within another hole.
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* This is invalid.
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* The nested point will be set to reflect this.
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* @return true if some hole is nested
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*/
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bool isNested();
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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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