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_BASE_STATE_VALIDITY_CHECKER_ 00038 #define OMPL_BASE_STATE_VALIDITY_CHECKER_ 00039 00040 #include "ompl/base/State.h" 00041 #include "ompl/util/ClassForward.h" 00042 00043 namespace ompl 00044 { 00045 00046 namespace base 00047 { 00048 00049 ClassForward(SpaceInformation); 00050 00052 ClassForward(StateValidityChecker); 00053 00060 class StateValidityChecker 00061 { 00062 public: 00063 00065 StateValidityChecker(SpaceInformation* si) : si_(si) 00066 { 00067 } 00068 00070 StateValidityChecker(const SpaceInformationPtr &si) : si_(si.get()) 00071 { 00072 } 00073 00074 virtual ~StateValidityChecker(void) 00075 { 00076 } 00077 00081 virtual bool isValid(const State *state) const = 0; 00082 00084 virtual bool isValid(const State *state, double &dist) const 00085 { 00086 dist = clearance(state); 00087 return isValid(state); 00088 } 00089 00093 virtual bool isValid(const State *state, double &dist, State *gradient, bool &gradientAvailable) const 00094 { 00095 dist = clearance(state, gradient, gradientAvailable); 00096 return isValid(state); 00097 } 00098 00101 virtual double clearance(const State *state) const 00102 { 00103 return 0.0; 00104 } 00105 00109 virtual double clearance(const State *state, State *gradient, bool &gradientAvailable) const 00110 { 00111 gradientAvailable = false; 00112 return clearance(state); 00113 } 00114 00115 protected: 00116 00118 SpaceInformation *si_; 00119 00120 }; 00121 00123 class AllValidStateValidityChecker : public StateValidityChecker 00124 { 00125 public: 00126 00128 AllValidStateValidityChecker(SpaceInformation* si) : StateValidityChecker(si) 00129 { 00130 } 00131 00133 AllValidStateValidityChecker(const SpaceInformationPtr &si) : StateValidityChecker(si) 00134 { 00135 } 00136 00138 virtual bool isValid(const State * /* state */ ) const 00139 { 00140 return true; 00141 } 00142 }; 00143 00144 } 00145 } 00146 00147 #endif