98 lines
2.8 KiB
C
98 lines
2.8 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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*
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* Last port: geom/prep/PreparedLineStringIntersects.java r338 (JTS-1.12)
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*
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**********************************************************************/
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#pragma once
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#include <geos/geom/prep/PreparedLineString.h>
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#include <geos/algorithm/PointLocator.h>
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#include <geos/geom/util/ComponentCoordinateExtracter.h>
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#include <geos/geom/Coordinate.h>
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#include <geos/noding/SegmentStringUtil.h>
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namespace geos {
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namespace geom { // geos::geom
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namespace prep { // geos::geom::prep
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/**
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* \brief
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* Computes the <tt>intersects</tt> spatial relationship predicate
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* for a target {@link PreparedLineString} relative to all other
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* {@link Geometry} classes.
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*
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* Uses short-circuit tests and indexing to improve performance.
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*
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* @author Martin Davis
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*
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*/
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class PreparedLineStringIntersects {
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public:
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/**
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* Computes the intersects predicate between a {@link PreparedLineString}
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* and a {@link Geometry}.
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*
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* @param prep the prepared linestring
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* @param geom a test geometry
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* @return true if the linestring intersects the geometry
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*/
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static bool
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intersects(PreparedLineString& prep, const geom::Geometry* geom)
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{
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PreparedLineStringIntersects op(prep);
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return op.intersects(geom);
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}
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/**
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* \todo FIXME - mloskot: Why not taking linestring through const reference?
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*/
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PreparedLineStringIntersects(PreparedLineString& prep)
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: prepLine(prep)
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{ }
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/**
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* Tests whether this geometry intersects a given geometry.
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*
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* @param g the test geometry
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* @return true if the test geometry intersects
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*/
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bool intersects(const geom::Geometry* g) const;
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protected:
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PreparedLineString& prepLine;
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/**
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* Tests whether any representative point of the test Geometry intersects
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* the target geometry.
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* Only handles test geometries which are Puntal (dimension 0)
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*
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* @param testGeom a Puntal geometry to test
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* @return true if any point of the argument intersects the prepared geometry
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*/
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bool isAnyTestPointInTarget(const geom::Geometry* testGeom) const;
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// Declare type as noncopyable
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PreparedLineStringIntersects(const PreparedLineStringIntersects& other) = delete;
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PreparedLineStringIntersects& operator=(const PreparedLineStringIntersects& rhs) = delete;
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};
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} // namespace geos::geom::prep
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} // namespace geos::geom
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} // namespace geos
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