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Kavraki"> <link rel="stylesheet" href="../css/screen.css" type="text/css" media="screen, projection"> <link rel="stylesheet" href="../css/print.css" type="text/css" media="print"> <!--[if lt IE 7]> <script type="text/javascript" src="../js/jquery/jquery.js"></script> <script type="text/javascript" src="../js/jquery/jquery.dropdown.js"></script> <![endif]--> <script type="text/javaScript" src="search/search.js"></script> <script type="text/javascript"> var _gaq = _gaq || []; _gaq.push(['_setAccount', 'UA-9156598-2']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 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--></script> <div id="nav-path" class="navpath"> <ul> <li class="navelem"><a class="el" href="dir_f5421e52a658cd938113ed6044324834.html">src</a> </li> <li class="navelem"><a class="el" href="dir_ae92c2ff78847f0cb49b545f9089bbbc.html">ompl</a> </li> <li class="navelem"><a class="el" href="dir_40bc83a902349ad67ef9d1cb49964511.html">base</a> </li> </ul> </div> </div> <div class="header"> <div class="headertitle"> <div class="title">GoalLazySamples.h</div> </div> </div> <div class="contents"> <div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*********************************************************************</span> <a name="l00002"></a>00002 <span class="comment">* Software License Agreement (BSD License)</span> <a name="l00003"></a>00003 <span class="comment">*</span> <a name="l00004"></a>00004 <span class="comment">* Copyright (c) 2010, Rice University</span> <a name="l00005"></a>00005 <span class="comment">* All rights reserved.</span> <a name="l00006"></a>00006 <span class="comment">*</span> <a name="l00007"></a>00007 <span class="comment">* Redistribution and use in source and binary forms, with or without</span> <a name="l00008"></a>00008 <span class="comment">* modification, are permitted provided that the following conditions</span> <a name="l00009"></a>00009 <span class="comment">* are met:</span> <a name="l00010"></a>00010 <span class="comment">*</span> <a name="l00011"></a>00011 <span class="comment">* * Redistributions of source code must retain the above copyright</span> <a name="l00012"></a>00012 <span class="comment">* notice, this list of conditions and the following disclaimer.</span> <a name="l00013"></a>00013 <span class="comment">* * Redistributions in binary form must reproduce the above</span> <a name="l00014"></a>00014 <span class="comment">* copyright notice, this list of conditions and the following</span> <a name="l00015"></a>00015 <span class="comment">* disclaimer in the documentation and/or other materials provided</span> <a name="l00016"></a>00016 <span class="comment">* with the distribution.</span> <a name="l00017"></a>00017 <span class="comment">* * Neither the name of the Rice University nor the names of its</span> <a name="l00018"></a>00018 <span class="comment">* contributors may be used to endorse or promote products derived</span> <a name="l00019"></a>00019 <span class="comment">* from this software without specific prior written permission.</span> <a name="l00020"></a>00020 <span class="comment">*</span> <a name="l00021"></a>00021 <span class="comment">* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span> <a name="l00022"></a>00022 <span class="comment">* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span> <a name="l00023"></a>00023 <span class="comment">* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS</span> <a name="l00024"></a>00024 <span class="comment">* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE</span> <a name="l00025"></a>00025 <span class="comment">* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,</span> <a name="l00026"></a>00026 <span class="comment">* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,</span> <a name="l00027"></a>00027 <span class="comment">* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;</span> <a name="l00028"></a>00028 <span class="comment">* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER</span> <a name="l00029"></a>00029 <span class="comment">* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT</span> <a name="l00030"></a>00030 <span class="comment">* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN</span> <a name="l00031"></a>00031 <span class="comment">* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE</span> <a name="l00032"></a>00032 <span class="comment">* POSSIBILITY OF SUCH DAMAGE.</span> <a name="l00033"></a>00033 <span class="comment">*********************************************************************/</span> <a name="l00034"></a>00034 <a name="l00035"></a>00035 <span class="comment">/* Author: Ioan Sucan */</span> <a name="l00036"></a>00036 <a name="l00037"></a>00037 <span class="preprocessor">#ifndef OMPL_BASE_GOAL_LAZY_SAMPLES_</span> <a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor">#define OMPL_BASE_GOAL_LAZY_SAMPLES_</span> <a name="l00039"></a>00039 <span class="preprocessor"></span> <a name="l00040"></a>00040 <span class="preprocessor">#include "ompl/base/GoalStates.h"</span> <a name="l00041"></a>00041 <span class="preprocessor">#include <boost/thread/thread.hpp></span> <a name="l00042"></a>00042 <span class="preprocessor">#include <boost/function.hpp></span> <a name="l00043"></a>00043 <span class="preprocessor">#include <limits></span> <a name="l00044"></a>00044 <a name="l00045"></a>00045 <span class="keyword">namespace </span>ompl <a name="l00046"></a>00046 { <a name="l00047"></a>00047 <a name="l00048"></a>00048 <span class="keyword">namespace </span>base <a name="l00049"></a>00049 { <a name="l00050"></a>00050 <a name="l00051"></a><a class="code" href="namespaceompl_1_1base.html#a7ed818b17b8281f0dbb11b666a76aaa7">00051</a> <span class="keyword">class </span><a class="code" href="classompl_1_1base_1_1GoalLazySamples.html" title="Definition of a goal region that can be sampled, but the sampling process can be slow. This class allows sampling the happen in a separate thread, and the number of goals may increase, as the planner is running, in a thread-safe manner.">GoalLazySamples</a>; <a name="l00052"></a>00052 <a name="l00055"></a>00055 <span class="keyword">typedef</span> boost::function2<bool, const GoalLazySamples*, State*> <a class="code" href="namespaceompl_1_1base.html#a7ed818b17b8281f0dbb11b666a76aaa7" title="Goal sampling function. Returns false when no further calls should be made to it. Fills its second ar...">GoalSamplingFn</a>; <a name="l00056"></a>00056 <a name="l00071"></a><a class="code" href="classompl_1_1base_1_1GoalLazySamples.html">00071</a> <span class="keyword">class </span><a class="code" href="classompl_1_1base_1_1GoalLazySamples.html" title="Definition of a goal region that can be sampled, but the sampling process can be slow. This class allows sampling the happen in a separate thread, and the number of goals may increase, as the planner is running, in a thread-safe manner.">GoalLazySamples</a> : <span class="keyword">public</span> <a class="code" href="classompl_1_1base_1_1GoalStates.html" title="Definition of a set of goal states.">GoalStates</a> <a name="l00072"></a>00072 { <a name="l00073"></a>00073 <span class="keyword">public</span>: <a name="l00074"></a>00074 <a name="l00093"></a>00093 <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#ad296cf0838d99bbd70fdf807432f2e67" title="Create a goal region that can be sampled in a lazy fashion. A function that produces samples from tha...">GoalLazySamples</a>(<span class="keyword">const</span> <a class="code" href="classompl_1_1base_1_1SpaceInformationPtr.html" title="A boost shared pointer wrapper for ompl::base::SpaceInformation.">SpaceInformationPtr</a> &si, <span class="keyword">const</span> <a class="code" href="namespaceompl_1_1base.html#a7ed818b17b8281f0dbb11b666a76aaa7" title="Goal sampling function. Returns false when no further calls should be made to it. Fills its second ar...">GoalSamplingFn</a> &samplerFunc, <a name="l00094"></a>00094 <span class="keywordtype">bool</span> autoStart = <span class="keyword">true</span>, <span class="keywordtype">double</span> minDist = std::numeric_limits<double>::epsilon()); <a name="l00095"></a>00095 <a name="l00096"></a>00096 <span class="keyword">virtual</span> ~<a class="code" href="classompl_1_1base_1_1GoalLazySamples.html" title="Definition of a goal region that can be sampled, but the sampling process can be slow. This class allows sampling the happen in a separate thread, and the number of goals may increase, as the planner is running, in a thread-safe manner.">GoalLazySamples</a>(<span class="keywordtype">void</span>); <a name="l00097"></a>00097 <a name="l00098"></a>00098 <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a0fb9e9d12bea1de967b6fbc6b6738719" title="Sample a state in the goal region.">sampleGoal</a>(<a class="code" href="classompl_1_1base_1_1State.html" title="Definition of an abstract state.">State</a> *st) <span class="keyword">const</span>; <a name="l00099"></a>00099 <a name="l00100"></a>00100 <span class="keyword">virtual</span> <span class="keywordtype">double</span> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a692bde395578c4fc7e9db960f724832e" title="Compute the distance to the goal (heuristic). This function is the one used in computing the distance...">distanceGoal</a>(<span class="keyword">const</span> <a class="code" href="classompl_1_1base_1_1State.html" title="Definition of an abstract state.">State</a> *st) <span class="keyword">const</span>; <a name="l00101"></a>00101 <a name="l00102"></a>00102 <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a11885628f6b06904462165fd9d1fc08b" title="Add a goal state.">addState</a>(<span class="keyword">const</span> <a class="code" href="classompl_1_1base_1_1State.html" title="Definition of an abstract state.">State</a>* st); <a name="l00103"></a>00103 <a name="l00105"></a>00105 <span class="keywordtype">void</span> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#af3894060ae99b12f00cdcc1ef2c7d0bf" title="Start the goal sampling thread.">startSampling</a>(<span class="keywordtype">void</span>); <a name="l00106"></a>00106 <a name="l00108"></a>00108 <span class="keywordtype">void</span> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a6581de7182b474a8f2c6ca6129a8ce9d" title="Stop the goal sampling thread.">stopSampling</a>(<span class="keywordtype">void</span>); <a name="l00109"></a>00109 <a name="l00111"></a>00111 <span class="keywordtype">bool</span> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#ad524231e037fc7ce539ede485e240def" title="Return true if the sampling thread is active.">isSampling</a>(<span class="keywordtype">void</span>) <span class="keyword">const</span>; <a name="l00112"></a>00112 <a name="l00116"></a>00116 <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a5f1ed43b242503b8031996f83d79e4ab" title="Return true of maxSampleCount() > 0 or if the sampling thread is active, as in this case it is possib...">canSample</a>(<span class="keywordtype">void</span>) <span class="keyword">const</span>; <a name="l00117"></a>00117 <a name="l00120"></a><a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#ae19f97c741f2c0f48c7e3c88b16d432f">00120</a> <span class="keywordtype">void</span> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#ae19f97c741f2c0f48c7e3c88b16d432f" title="Set the minimum distance that a new state returned by the sampling thread needs to be away from previ...">setMinNewSampleDistance</a>(<span class="keywordtype">double</span> dist) <a name="l00121"></a>00121 { <a name="l00122"></a>00122 <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a2872e6f726b36c7140d88b81921a5a81" title="Samples returned by the sampling thread are added to the list of states only if they are at least min...">minDist_</a> = dist; <a name="l00123"></a>00123 } <a name="l00124"></a>00124 <a name="l00127"></a><a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#ae80dbaa527a1d5a234c28b83b392786e">00127</a> <span class="keywordtype">double</span> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#ae80dbaa527a1d5a234c28b83b392786e" title="Get the minimum distance that a new state returned by the sampling thread needs to be away from previ...">getMinNewSampleDistance</a>(<span class="keywordtype">void</span>)<span class="keyword"> const</span> <a name="l00128"></a>00128 <span class="keyword"> </span>{ <a name="l00129"></a>00129 <span class="keywordflow">return</span> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a2872e6f726b36c7140d88b81921a5a81" title="Samples returned by the sampling thread are added to the list of states only if they are at least min...">minDist_</a>; <a name="l00130"></a>00130 } <a name="l00131"></a>00131 <a name="l00133"></a><a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a408682957039671f0cda9b031770f5c1">00133</a> <span class="keywordtype">bool</span> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a408682957039671f0cda9b031770f5c1" title="Return true if the last state returned by the sampling function was added. Return false otherwise...">wasLastStateAdded</a>(<span class="keywordtype">void</span>)<span class="keyword"> const</span> <a name="l00134"></a>00134 <span class="keyword"> </span>{ <a name="l00135"></a>00135 <span class="keywordflow">return</span> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a3178d4b6de7fde34a163182b98b98238" title="Flag indicating whether the last state returned by the sampling function was added or not...">lastStateAdded_</a>; <a name="l00136"></a>00136 } <a name="l00137"></a>00137 <a name="l00139"></a>00139 <span class="keywordtype">bool</span> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#aa7015a082cbebc65f76d57cc7fc8521a" title="Add a state st if it further away that minDistance from previously added states. Return true if the s...">addStateIfDifferent</a>(<span class="keyword">const</span> <a class="code" href="classompl_1_1base_1_1State.html" title="Definition of an abstract state.">State</a>* st, <span class="keywordtype">double</span> minDistance); <a name="l00140"></a>00140 <a name="l00141"></a>00141 <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#ab33e196cd1f63ca75146721ef6f9cdaa" title="Clear all goal states.">clear</a>(<span class="keywordtype">void</span>); <a name="l00142"></a>00142 <a name="l00143"></a>00143 <span class="keyword">protected</span>: <a name="l00144"></a>00144 <a name="l00146"></a>00146 <span class="keywordtype">void</span> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a787aad32e2abd6586ba29f3d3fd866fc" title="The function that samples goals by calling samplerFunc_ in a separate thread.">goalSamplingThread</a>(<span class="keywordtype">void</span>); <a name="l00147"></a>00147 <a name="l00149"></a><a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a21473de193144c6885ed1de4c9f03354">00149</a> <span class="keyword">mutable</span> boost::mutex <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a21473de193144c6885ed1de4c9f03354" title="Lock for updating the set of states.">lock_</a>; <a name="l00150"></a>00150 <a name="l00152"></a><a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#ad3ce46e7898f2f001fcdd07a23b09987">00152</a> <a class="code" href="namespaceompl_1_1base.html#a7ed818b17b8281f0dbb11b666a76aaa7" title="Goal sampling function. Returns false when no further calls should be made to it. Fills its second ar...">GoalSamplingFn</a> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#ad3ce46e7898f2f001fcdd07a23b09987" title="Function that produces samples.">samplerFunc_</a>; <a name="l00153"></a>00153 <a name="l00155"></a><a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#ac8bfb5596555a8f1ee48c8c75ee93205">00155</a> <span class="keywordtype">bool</span> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#ac8bfb5596555a8f1ee48c8c75ee93205" title="Flag used to notify the sampling thread to terminate sampling.">terminateSamplingThread_</a>; <a name="l00156"></a>00156 <a name="l00158"></a><a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a834ee816753de6f2bbc8e4684c48b4a3">00158</a> boost::thread *<a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a834ee816753de6f2bbc8e4684c48b4a3" title="Additional thread for sampling goal states.">samplingThread_</a>; <a name="l00159"></a>00159 <a name="l00161"></a><a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a3178d4b6de7fde34a163182b98b98238">00161</a> <span class="keywordtype">bool</span> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a3178d4b6de7fde34a163182b98b98238" title="Flag indicating whether the last state returned by the sampling function was added or not...">lastStateAdded_</a>; <a name="l00162"></a>00162 <a name="l00165"></a><a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a2872e6f726b36c7140d88b81921a5a81">00165</a> <span class="keywordtype">double</span> <a class="code" href="classompl_1_1base_1_1GoalLazySamples.html#a2872e6f726b36c7140d88b81921a5a81" title="Samples returned by the sampling thread are added to the list of states only if they are at least min...">minDist_</a>; <a name="l00166"></a>00166 }; <a name="l00167"></a>00167 <a name="l00168"></a>00168 } <a name="l00169"></a>00169 } <a name="l00170"></a>00170 <a name="l00171"></a>00171 <span class="preprocessor">#endif</span> </pre></div></div> </div> <!-- window showing the filter options --> <div id="MSearchSelectWindow" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return searchBox.OnSearchSelectHide()" onkeydown="return searchBox.OnSearchSelectKey(event)"> <a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Classes</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Namespaces</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark"> </span>Enumerator</a></div> <!-- iframe showing the search results (closed by default) --> <div id="MSearchResultsWindow"> <iframe src="javascript:void(0)" frameborder="0" name="MSearchResults" id="MSearchResults"> </iframe> </div> </div> <div class="footer span-22 push-2 last"> <a href="http://www.kavrakilab.org">Physical and Biological Computing Group</a> • <a href="http://www.cs.rice.edu">Department of Computer Science</a> • <a href="http://www.rice.edu">Rice University</a><br> <div class="gray">Generated on Sun Oct 9 2011 23:04:39 by <a href="http://www.doxygen.org/index.html">doxygen</a> 1.7.4</div> </div> </div> </body> </html>