00001 #ifndef SimTK_SimTKCOMMON_RANDOM_H_ 00002 #define SimTK_SimTKCOMMON_RANDOM_H_ 00003 00004 /* -------------------------------------------------------------------------- * 00005 * SimTK Core: SimTKcommon * 00006 * -------------------------------------------------------------------------- * 00007 * This is part of the SimTK Core biosimulation toolkit originating from * 00008 * Simbios, the NIH National Center for Physics-Based Simulation of * 00009 * Biological Structures at Stanford, funded under the NIH Roadmap for * 00010 * Medical Research, grant U54 GM072970. See https://simtk.org. * 00011 * * 00012 * Portions copyright (c) 2007 Stanford University and the Authors. * 00013 * Authors: Peter Eastman * 00014 * Contributors: * 00015 * * 00016 * Permission is hereby granted, free of charge, to any person obtaining a * 00017 * copy of this software and associated documentation files (the "Software"), * 00018 * to deal in the Software without restriction, including without limitation * 00019 * the rights to use, copy, modify, merge, publish, distribute, sublicense, * 00020 * and/or sell copies of the Software, and to permit persons to whom the * 00021 * Software is furnished to do so, subject to the following conditions: * 00022 * * 00023 * The above copyright notice and this permission notice shall be included in * 00024 * all copies or substantial portions of the Software. * 00025 * * 00026 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * 00027 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * 00028 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * 00029 * THE AUTHORS, CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 00030 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 00031 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * 00032 * USE OR OTHER DEALINGS IN THE SOFTWARE. * 00033 * -------------------------------------------------------------------------- */ 00034 00035 #include "SimTKcommon/basics.h" 00036 00037 namespace SimTK { 00038 00062 class SimTK_SimTKCOMMON_EXPORT Random { 00063 public: 00064 class Uniform; 00065 class Gaussian; 00066 class RandomImpl; 00067 ~Random(); 00071 void setSeed(int seed); 00075 Real getValue() const; 00079 void fillArray(Real array[], int length) const; 00080 protected: 00081 RandomImpl* impl; 00085 Random(); 00089 RandomImpl& getImpl(); 00093 const RandomImpl& getConstImpl() const; 00094 private: 00095 Random(Random& r); 00096 Random operator=(Random& r); 00097 }; 00098 00103 class SimTK_SimTKCOMMON_EXPORT Random::Uniform : public Random { 00104 public: 00105 class UniformImpl; 00109 Uniform(); 00113 Uniform(Real min, Real max); 00117 int getIntValue(); 00121 Real getMin() const; 00125 void setMin(Real min); 00129 Real getMax() const; 00133 void setMax(Real max); 00134 protected: 00135 UniformImpl& getImpl(); 00136 const UniformImpl& getConstImpl() const; 00137 }; 00138 00144 class SimTK_SimTKCOMMON_EXPORT Random::Gaussian : public Random { 00145 public: 00146 class GaussianImpl; 00150 Gaussian(); 00154 Gaussian(Real mean, Real stddev); 00158 Real getMean() const; 00162 void setMean(Real mean); 00166 Real getStdDev() const; 00170 void setStdDev(Real stddev); 00171 protected: 00172 GaussianImpl& getImpl(); 00173 const GaussianImpl& getConstImpl() const; 00174 }; 00175 00176 } // namespace SimTK 00177 00178 #endif // SimTK_SimTKCOMMON_RANDOM_H_