73 lines
2.4 KiB
C++
73 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) 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: linearref/LocationIndexOfLine.java r731
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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/linearref/LinearLocation.h>
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namespace geos {
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namespace linearref { // geos::linearref
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/** \brief
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* Determines the location of a subline along a linear [Geometry](@ref geom::Geometry).
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*
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* The location is reported as a pair of {@link LinearLocation}s.
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*
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* @note Currently this algorithm is not guaranteed to
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* return the correct substring in some situations where
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* an endpoint of the test line occurs more than once in the input line.
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* (However, the common case of a ring is always handled correctly).
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*/
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class LocationIndexOfLine {
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/**
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* MD - this algorithm has been extracted into a class
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* because it is intended to validate that the subline truly is a subline,
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* and also to use the internal vertex information to unambiguously locate the subline.
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*/
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private:
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const geom::Geometry* linearGeom;
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public:
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/** \brief
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* Determines the location of a subline along a linear [Geometry](@ref geom::Geometry).
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*
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* The location is reported as a pair of [LinearLocations](@ref LinearLocation).
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*
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* @note Currently this algorithm is not guaranteed to
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* return the correct substring in some situations where
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* an endpoint of the test line occurs more than once in the input line.
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* (However, the common case of a ring is always handled correctly).
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*
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* @note Caller must take of releasing with delete[]
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*
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*/
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static LinearLocation* indicesOf(const geom::Geometry* linearGeom, const geom::Geometry* subLine);
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LocationIndexOfLine(const geom::Geometry* linearGeom);
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/// Caller must take of releasing with delete[]
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LinearLocation* indicesOf(const geom::Geometry* subLine) const;
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};
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}
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}
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