SensorNoise.h

#pragma once
 
#include <random>
 
class SensorNoise
{
public:
   explicit SensorNoise(unsigned int seed);
 
   bool IsDeterministic() const { return m_deterministic; }
 
   double Uniform(double low, double high);
 
   double Gaussian(double mean, double stddev);
 
   int Poisson(double lambda);
 
   double Gamma(double shape);
 
private:
   double RawUniform() { return m_unit(m_engine); }
 
   double RawStandardNormal();
 
   double GammaUnitScaleShapeAtLeastOne(double shape);
 
   static const double kPoissonNormalLimit;
 
   std::mt19937                           m_engine;        
   std::uniform_real_distribution<double> m_unit;          
   bool                                   m_deterministic; 
};