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<h1>SweepLineIndex.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: SweepLineIndex.h 2556 2009-06-06 22:22:28Z 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
<a name="l00016"></a>00016 <span class="preprocessor">#ifndef GEOS_INDEX_SWEEPLINE_SWEEPLINEINDEX_H</span>
<a name="l00017"></a>00017 <span class="preprocessor"></span><span class="preprocessor">#define GEOS_INDEX_SWEEPLINE_SWEEPLINEINDEX_H</span>
<a name="l00018"></a>00018 <span class="preprocessor"></span>
<a name="l00019"></a>00019 <span class="preprocessor">#include <geos/export.h></span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="preprocessor">#include <vector></span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="comment">// Forward declarations</span>
<a name="l00024"></a>00024 <span class="keyword">namespace </span>geos {
<a name="l00025"></a>00025 <span class="keyword">namespace </span>index {
<a name="l00026"></a>00026 <span class="keyword">namespace </span>sweepline {
<a name="l00027"></a>00027 <span class="keyword">class </span>SweepLineInterval;
<a name="l00028"></a>00028 <span class="keyword">class </span>SweepLineEvent;
<a name="l00029"></a>00029 <span class="keyword">class </span>SweepLineOverlapAction;
<a name="l00030"></a>00030 }
<a name="l00031"></a>00031 }
<a name="l00032"></a>00032 }
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="keyword">namespace </span>geos {
<a name="l00035"></a>00035 <span class="keyword">namespace </span>index { <span class="comment">// geos.index</span>
<a name="l00036"></a>00036 <span class="keyword">namespace </span>sweepline { <span class="comment">// geos:index:sweepline</span>
<a name="l00037"></a>00037
<a name="l00043"></a><a class="code" href="classgeos_1_1index_1_1sweepline_1_1SweepLineIndex.html">00043</a> <span class="keyword">class </span>GEOS_DLL <a class="code" href="classgeos_1_1index_1_1sweepline_1_1SweepLineIndex.html" title="A sweepline implements a sorted index on a set of intervals.">SweepLineIndex</a> {
<a name="l00044"></a>00044
<a name="l00045"></a>00045 <span class="keyword">public</span>:
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <a class="code" href="classgeos_1_1index_1_1sweepline_1_1SweepLineIndex.html" title="A sweepline implements a sorted index on a set of intervals.">SweepLineIndex</a>();
<a name="l00048"></a>00048
<a name="l00049"></a>00049 ~<a class="code" href="classgeos_1_1index_1_1sweepline_1_1SweepLineIndex.html" title="A sweepline implements a sorted index on a set of intervals.">SweepLineIndex</a>();
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="keywordtype">void</span> add(SweepLineInterval *sweepInt);
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <span class="keywordtype">void</span> computeOverlaps(SweepLineOverlapAction *action);
<a name="l00054"></a>00054
<a name="l00055"></a>00055 <span class="keyword">private</span>:
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="comment">// FIXME: make it a real vector rather then a pointer</span>
<a name="l00058"></a>00058 std::vector<SweepLineEvent*> events;
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <span class="keywordtype">bool</span> indexBuilt;
<a name="l00061"></a>00061
<a name="l00062"></a>00062 <span class="comment">// statistics information</span>
<a name="l00063"></a>00063 <span class="keywordtype">int</span> nOverlaps;
<a name="l00064"></a>00064
<a name="l00070"></a>00070 <span class="keywordtype">void</span> buildIndex();
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="keywordtype">void</span> processOverlaps(<span class="keywordtype">int</span> start, <span class="keywordtype">int</span> end,
<a name="l00073"></a>00073 SweepLineInterval *s0,
<a name="l00074"></a>00074 SweepLineOverlapAction *action);
<a name="l00075"></a>00075 };
<a name="l00076"></a>00076
<a name="l00077"></a>00077
<a name="l00078"></a>00078 } <span class="comment">// namespace geos:index:sweepline</span>
<a name="l00079"></a>00079 } <span class="comment">// namespace geos:index</span>
<a name="l00080"></a>00080 } <span class="comment">// namespace geos</span>
<a name="l00081"></a>00081
<a name="l00082"></a>00082 <span class="preprocessor">#endif // GEOS_INDEX_SWEEPLINE_SWEEPLINEINDEX_H</span>
<a name="l00083"></a>00083 <span class="preprocessor"></span>
<a name="l00084"></a>00084 <span class="comment">/**********************************************************************</span>
<a name="l00085"></a>00085 <span class="comment"> * $Log$</span>
<a name="l00086"></a>00086 <span class="comment"> * Revision 1.1 2006/03/21 10:01:30 strk</span>
<a name="l00087"></a>00087 <span class="comment"> * indexSweepline.h header split</span>
<a name="l00088"></a>00088 <span class="comment"> *</span>
<a name="l00089"></a>00089 <span class="comment"> **********************************************************************/</span>
<a name="l00090"></a>00090
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