79 lines
2.4 KiB
C++
79 lines
2.4 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) 2023 Martin Davis <mtnclimb@gmail.com>
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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: algorithm/construct/IndexedDistanceToPoint.java
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* https://github.com/locationtech/jts/commit/d92f783163d9440fcc10c729143787bf7b9fe8f9
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*
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**********************************************************************/
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#pragma once
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#include <geos/geom/Coordinate.h>
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#include <geos/geom/Geometry.h>
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#include <geos/geom/Location.h>
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#include <geos/index/strtree/TemplateSTRtree.h>
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#include <geos/algorithm/locate/IndexedPointInAreaLocator.h>
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using geos::geom::Geometry;
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using geos::geom::CoordinateXY;
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using geos::geom::Location;
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using geos::index::strtree::TemplateSTRtree;
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using geos::algorithm::locate::IndexedPointInAreaLocator;
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namespace geos {
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namespace algorithm { // geos::algorithm
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namespace construct { // geos::algorithm::construct
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/**
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* \brief Determines the location of a point in the polygonal elements of a geometry.
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*
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* Uses spatial indexing to provide efficient performance.
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*
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* \author Martin Davis
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*/
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class GEOS_DLL IndexedPointInPolygonsLocator {
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public:
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/**
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* \brief Creates an instance to locate a point in polygonal elements.
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*
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* \param geom the geometry to locate in
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*/
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IndexedPointInPolygonsLocator(const Geometry& geom);
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/** \brief
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* Determines the [Location](@ref geom::Location) of a point in
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* the polygonal elements of a
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* [Geometry](@ref geom::Geometry).
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*
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* @param p the point to test
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* @return the location of the point in the geometry
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*/
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Location locate(const CoordinateXY* /*const*/ p);
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private:
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void init();
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// Declare type as noncopyable
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IndexedPointInPolygonsLocator(const IndexedPointInPolygonsLocator& other) = delete;
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IndexedPointInPolygonsLocator& operator=(const IndexedPointInPolygonsLocator& rhs) = delete;
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//-- members
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const Geometry& geom;
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bool isInitialized;
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TemplateSTRtree<IndexedPointInAreaLocator*> index;
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std::vector<std::unique_ptr<IndexedPointInAreaLocator>> locators;
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};
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}}} |