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<h1>SegmentStringUtil.h</h1> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/**********************************************************************</span>
<a name="l00002"></a>00002 <span class="comment"> * $Id: SegmentStringUtil.h 2325 2009-04-08 13:02:06Z strk $</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * GEOS - Geometry Engine Open Source</span>
<a name="l00005"></a>00005 <span class="comment"> * http://geos.refractions.net</span>
<a name="l00006"></a>00006 <span class="comment"> *</span>
<a name="l00007"></a>00007 <span class="comment"> * Copyright (C) 2006 Refractions Research Inc.</span>
<a name="l00008"></a>00008 <span class="comment"> *</span>
<a name="l00009"></a>00009 <span class="comment"> * This is free software; you can redistribute and/or modify it under</span>
<a name="l00010"></a>00010 <span class="comment"> * the terms of the GNU Lesser General Public Licence as published</span>
<a name="l00011"></a>00011 <span class="comment"> * by the Free Software Foundation. </span>
<a name="l00012"></a>00012 <span class="comment"> * See the COPYING file for more information.</span>
<a name="l00013"></a>00013 <span class="comment"> *</span>
<a name="l00014"></a>00014 <span class="comment"> *</span>
<a name="l00015"></a>00015 <span class="comment"> **********************************************************************</span>
<a name="l00016"></a>00016 <span class="comment"> *</span>
<a name="l00017"></a>00017 <span class="comment"> * Last port: noding/SegmentStringUtil.java rev. 1.2 (JTS-1.9)</span>
<a name="l00018"></a>00018 <span class="comment"> *</span>
<a name="l00019"></a>00019 <span class="comment"> **********************************************************************/</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="preprocessor">#ifndef GEOS_NODING_SEGMENTSTRINGUTIL_H</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#define GEOS_NODING_SEGMENTSTRINGUTIL_H</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <geos/noding/NodedSegmentString.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <geos/geom/LineString.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <geos/geom/CoordinateSequence.h></span>
<a name="l00027"></a>00027 <span class="preprocessor">#include <geos/geom/util/LinearComponentExtracter.h></span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="keyword">namespace </span>geos {
<a name="l00030"></a>00030 <span class="keyword">namespace </span>noding { <span class="comment">// geos::noding</span>
<a name="l00031"></a>00031
<a name="l00038"></a><a class="code" href="classgeos_1_1noding_1_1SegmentStringUtil.html">00038</a> <span class="keyword">class </span><a class="code" href="classgeos_1_1noding_1_1SegmentStringUtil.html" title="Utility methods for processing SegmentStrings.">SegmentStringUtil</a>
<a name="l00039"></a>00039 {
<a name="l00040"></a>00040 <span class="keyword">public</span>:
<a name="l00059"></a><a class="code" href="classgeos_1_1noding_1_1SegmentStringUtil.html#ae1d7039ca7a1f3b3620bf33f90fa4a59">00059</a> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classgeos_1_1noding_1_1SegmentStringUtil.html#ae1d7039ca7a1f3b3620bf33f90fa4a59" title="Extracts all linear components from a given Geometry to SegmentStrings.">extractSegmentStrings</a>(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory.">geom::Geometry</a> * g,
<a name="l00060"></a>00060 SegmentString::ConstVect& segStr)
<a name="l00061"></a>00061 {
<a name="l00062"></a>00062 <a class="code" href="classgeos_1_1geom_1_1LineString.html#aa165bf9c81c16f6b7934804bcdbbcd4f" title="A vector of const LineString pointers.">geom::LineString::ConstVect</a> lines;
<a name="l00063"></a>00063 <a class="code" href="classgeos_1_1geom_1_1util_1_1LinearComponentExtracter.html#a3b88d71fbbb980e558ee0311f743c4cf">geom::util::LinearComponentExtracter::getLines</a>(*g, lines);
<a name="l00064"></a>00064
<a name="l00065"></a>00065 <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i=0, n=lines.size(); i<n; i++)
<a name="l00066"></a>00066 {
<a name="l00067"></a>00067 <a class="code" href="classgeos_1_1geom_1_1LineString.html" title="Basic implementation of LineString.">geom::LineString</a>* line = (<a class="code" href="classgeos_1_1geom_1_1LineString.html" title="Basic implementation of LineString.">geom::LineString</a>*)(lines[i]);
<a name="l00068"></a>00068
<a name="l00069"></a>00069 <span class="comment">// we take ownership of the coordinates here</span>
<a name="l00070"></a>00070 <span class="comment">// TODO: check if this can be optimized by getting</span>
<a name="l00071"></a>00071 <span class="comment">// the internal CS.</span>
<a name="l00072"></a>00072 <a class="code" href="classgeos_1_1geom_1_1CoordinateSequence.html" title="The internal representation of a list of coordinates inside a Geometry.">geom::CoordinateSequence</a>* pts = line-><a class="code" href="classgeos_1_1geom_1_1LineString.html#aec9aa8117c882d5896a97c1e927559d9" title="Returns this Geometry vertices. Caller takes ownership of the returned object.">getCoordinates</a>();
<a name="l00073"></a>00073
<a name="l00074"></a>00074 segStr.push_back(<span class="keyword">new</span> <a class="code" href="classgeos_1_1noding_1_1NodedSegmentString.html" title="Represents a list of contiguous line segments, and supports noding the segments.">NodedSegmentString</a>(pts, g));
<a name="l00075"></a>00075 }
<a name="l00076"></a>00076 }
<a name="l00077"></a>00077
<a name="l00078"></a>00078 };
<a name="l00079"></a>00079
<a name="l00080"></a>00080 } <span class="comment">// geos::noding</span>
<a name="l00081"></a>00081 } <span class="comment">// geos</span>
<a name="l00082"></a>00082
<a name="l00083"></a>00083 <span class="preprocessor">#endif // GEOS_NODING_SEGMENTSTRINGUTIL_H</span>
<a name="l00084"></a>00084 <span class="preprocessor"></span><span class="comment">/**********************************************************************</span>
<a name="l00085"></a>00085 <span class="comment"> * $Log$</span>
<a name="l00086"></a>00086 <span class="comment"> **********************************************************************/</span>
<a name="l00087"></a>00087
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