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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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* Last port: noding/SegmentStringUtil.java rev. 1.2 (JTS-1.9) |
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**********************************************************************/ |
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#ifndef GEOS_NODING_SEGMENTSTRINGUTIL_H |
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#define GEOS_NODING_SEGMENTSTRINGUTIL_H |
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#include |
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#include |
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#include |
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#include |
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namespace geos { |
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namespace noding { // geos::noding |
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/** \brief |
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* Utility methods for processing {@link SegmentString}s. |
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* @author Martin Davis |
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* |
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*/ |
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class SegmentStringUtil |
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{ |
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public: |
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/** \brief |
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* Extracts all linear components from a given {@link Geometry} |
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* to {@link SegmentString}s. |
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* |
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* The SegmentString data item is set to be the source Geometry. |
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* |
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* @param geom the geometry to extract from |
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* @param segStr a List of SegmentStrings (output parameter). |
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* Ownership of elements pushed to the vector |
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* is transferred to caller. |
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*/ |
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static void extractSegmentStrings(const geom::Geometry * g, |
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SegmentString::ConstVect& segStr) |
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{ |
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geom::LineString::ConstVect lines; |
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geom::util::LinearComponentExtracter::getLines(*g, lines); |
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for (std::size_t i=0, n=lines.size(); i
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{ |
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geom::LineString* line = (geom::LineString*)(lines[i]); |
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// we take ownership of the coordinates here |
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// TODO: check if this can be optimized by getting |
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// the internal CS. |
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geom::CoordinateSequence* pts = line->getCoordinates(); |
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segStr.push_back(new NodedSegmentString(pts, g)); |
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} |
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} |
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}; |
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} // geos::noding |
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} // geos |
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#endif // GEOS_NODING_SEGMENTSTRINGUTIL_H |