00001 /** 00002 * @file RandomMotionGenerator.h 00003 * 00004 * Definition of class RandomMotionGenerator 00005 * 00006 * @author <a href="mailto:timlaue@informatik.uni-bremen.de">Tim Laue</a> 00007 */ 00008 00009 #ifndef RANDOM_MOTION_GENERATOR_H_ 00010 #define RANDOM_MOTION_GENERATOR_H_ 00011 00012 00013 #include "PfieldDatatypes.h" 00014 #include "Pfield.h" 00015 00016 00017 /** 00018 * @class RandomMotionGenerator 00019 * 00020 * An class for generating random motion vectors 00021 */ 00022 class RandomMotionGenerator 00023 { 00024 public: 00025 /** Constructor 00026 * @param minValue See class members 00027 * @param maxValue See class members 00028 * @param valueDx See class members 00029 * @param directionDx See class members 00030 * @param changeType See class members 00031 * @param n See class members 00032 */ 00033 RandomMotionGenerator(double minValue, double maxValue, double valueDx, 00034 double directionDx, ChangeType changeType, unsigned long n); 00035 00036 /** Returns a random motion vector 00037 * @return The vector 00038 */ 00039 PfVec getMotionVector(); 00040 00041 private: 00042 /** The minimum length of the random vector*/ 00043 double minValue; 00044 /** The maximum length of the random vector*/ 00045 double maxValue; 00046 /** The maximum difference of the length of two successively generated vector*/ 00047 double valueDx; 00048 /** The maximum difference of the direction of two successively generated vector*/ 00049 double directionDx; 00050 /** The unit of n*/ 00051 ChangeType changeType; 00052 /** The number of steps to wait until a new vector is generated*/ 00053 unsigned long n; 00054 /** The last generated vector*/ 00055 PfVec lastVec; 00056 /** The last generated direction*/ 00057 double lastDirection; 00058 /** The number of calls since the last vector was generated*/ 00059 unsigned long calls; 00060 /** The point of time the last vector was generated*/ 00061 unsigned long pointOfGenerationTime; 00062 00063 /** Returns a direction 00064 * @param previousDirection The previous direction in radian 00065 * @return A direction in radian 00066 */ 00067 double computeDirection(double previousDirection) const; 00068 00069 /** Returns a length 00070 * @param previousLength The previous length 00071 * @return A length 00072 */ 00073 double computeVecLength(double previousLength) const; 00074 00075 /** Returns a random number between two numbers 00076 * @param min The minimum value 00077 * @param max The maximum value 00078 * @return A random number between min and max 00079 */ 00080 double getRandomNumberBetween(double min, double max) const; 00081 }; 00082 00083 00084 #endif //RANDOM_MOTION_GENERATOR_H_ 00085 00086 00087 00088 /* 00089 * $Log: RandomMotionGenerator.h,v $ 00090 * Revision 1.1.1.1 2004/05/22 17:37:36 cvsadm 00091 * created new repository GT2004_WM 00092 * 00093 * Revision 1.1 2004/01/20 15:42:19 tim 00094 * Added potential fields implementation 00095 * 00096 * Revision 1.1 2003/06/13 14:27:58 tim 00097 * added random generator and tangential fields 00098 * 00099 */
1.3.6