00001 /********************************************************************* 00002 * Software License Agreement (BSD License) 00003 * 00004 * Copyright (c) 2008, Willow Garage, Inc. 00005 * All rights reserved. 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions 00009 * are met: 00010 * 00011 * * Redistributions of source code must retain the above copyright 00012 * notice, this list of conditions and the following disclaimer. 00013 * * Redistributions in binary form must reproduce the above 00014 * copyright notice, this list of conditions and the following 00015 * disclaimer in the documentation and/or other materials provided 00016 * with the distribution. 00017 * * Neither the name of the Willow Garage nor the names of its 00018 * contributors may be used to endorse or promote products derived 00019 * from this software without specific prior written permission. 00020 * 00021 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00022 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00023 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00024 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 00025 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00026 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00027 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00028 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 00029 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00030 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 00031 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00032 * POSSIBILITY OF SUCH DAMAGE. 00033 *********************************************************************/ 00034 00035 /* Author: Ioan Sucan */ 00036 00037 #ifndef OMPL_GEOMETRIC_PLANNERS_RRT_pRRT_ 00038 #define OMPL_GEOMETRIC_PLANNERS_RRT_pRRT_ 00039 00040 #include "ompl/geometric/planners/PlannerIncludes.h" 00041 #include "ompl/base/StateSamplerArray.h" 00042 #include "ompl/datastructures/NearestNeighbors.h" 00043 #include <boost/thread/mutex.hpp> 00044 00045 namespace ompl 00046 { 00047 00048 namespace geometric 00049 { 00050 00069 class pRRT : public base::Planner 00070 { 00071 public: 00072 00073 pRRT(const base::SpaceInformationPtr &si) : base::Planner(si, "pRRT"), 00074 samplerArray_(si) 00075 { 00076 type_ = base::PLAN_TO_GOAL_ANY; 00077 00078 setThreadCount(2); 00079 goalBias_ = 0.05; 00080 maxDistance_ = 0.0; 00081 } 00082 00083 virtual ~pRRT(void) 00084 { 00085 freeMemory(); 00086 } 00087 00088 virtual void getPlannerData(base::PlannerData &data) const; 00089 00090 virtual bool solve(const base::PlannerTerminationCondition &ptc); 00091 00092 virtual void clear(void); 00093 00103 void setGoalBias(double goalBias) 00104 { 00105 goalBias_ = goalBias; 00106 } 00107 00109 double getGoalBias(void) const 00110 { 00111 return goalBias_; 00112 } 00113 00119 void setRange(double distance) 00120 { 00121 maxDistance_ = distance; 00122 } 00123 00125 double getRange(void) const 00126 { 00127 return maxDistance_; 00128 } 00129 00131 void setThreadCount(unsigned int nthreads); 00132 00133 unsigned int getThreadCount(void) const 00134 { 00135 return threadCount_; 00136 } 00137 00139 template<template<typename T> class NN> 00140 void setNearestNeighbors(void) 00141 { 00142 nn_.reset(new NN<Motion*>()); 00143 } 00144 00145 virtual void setup(void); 00146 00147 protected: 00148 00149 class Motion 00150 { 00151 public: 00152 00153 Motion(void) : state(NULL), parent(NULL) 00154 { 00155 } 00156 00157 Motion(const base::SpaceInformationPtr &si) : state(si->allocState()), parent(NULL) 00158 { 00159 } 00160 00161 ~Motion(void) 00162 { 00163 } 00164 00165 base::State *state; 00166 Motion *parent; 00167 00168 }; 00169 00170 struct SolutionInfo 00171 { 00172 Motion *solution; 00173 Motion *approxsol; 00174 double approxdif; 00175 boost::mutex lock; 00176 }; 00177 00178 void threadSolve(unsigned int tid, const base::PlannerTerminationCondition &ptc, SolutionInfo *sol); 00179 void freeMemory(void); 00180 00181 double distanceFunction(const Motion* a, const Motion* b) const 00182 { 00183 return si_->distance(a->state, b->state); 00184 } 00185 00186 base::StateSamplerArray<base::StateSampler> samplerArray_; 00187 boost::shared_ptr< NearestNeighbors<Motion*> > nn_; 00188 boost::mutex nnLock_; 00189 00190 unsigned int threadCount_; 00191 00192 double goalBias_; 00193 double maxDistance_; 00194 }; 00195 00196 } 00197 } 00198 00199 #endif