Newton Dynamics  4.00
ndRand.h
1 /* Copyright (c) <2003-2022> <Julio Jerez, Newton Game Dynamics>
2 *
3 * This software is provided 'as-is', without any express or implied
4 * warranty. In no event will the authors be held liable for any damages
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21 
22 #ifndef __ND_RAND_H__
23 #define __ND_RAND_H__
24 
25 #include "ndCoreStdafx.h"
26 #include "ndTypes.h"
27 
29 D_CORE_API ndUnsigned64 ndGetTimeInMicroseconds();
30 
32 D_CORE_API ndFloat32 ndRand();
33 
35 D_CORE_API ndUnsigned32 ndRandInt();
36 
38 D_CORE_API void ndSetRandSeed(ndUnsigned32 seed);
39 
41 D_CORE_API ndFloat32 ndGaussianRandom(ndFloat32 mean, ndFloat32 sigma);
42 
45 class ndOUNoise
46 {
47  public:
48  D_CORE_API ndOUNoise(ndFloat32 value, ndFloat32 theta, ndFloat32 mean, ndFloat32 sigma);
49  D_CORE_API void Reset(ndFloat32 value);
50  D_CORE_API ndFloat32 Evaluate(ndFloat32 step);
51 
52  private:
53  ndFloat32 m_value;
54  ndFloat32 m_mean;
55  ndFloat32 m_sigma;
56  ndFloat32 m_theta;
57 };
58 
59 #endif
60 
ndOUNoise
generate a Gaussian process of centered at mean, deviation sigma and uncertainty range theta.
Definition: ndRand.h:46