randomnumbertable.h

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#pragma once
#ifndef UTIL_RANDOMNUMBERTABLE_H
#define UTIL_RANDOMNUMNERTABLE_H
//------------------------------------------------------------------------------
#include "core/types.h"
    
//------------------------------------------------------------------------------
namespace Util
{
class RandomNumberTable
{
public:
    static float Rand(IndexT key);
    static float Rand(IndexT key, float minVal, float maxVal);
 
private:
    static const SizeT tableSize = 2048;
    static const float randTable[tableSize];
};
 
//------------------------------------------------------------------------------
inline float
RandomNumberTable::Rand(IndexT key)
{
    return randTable[key % tableSize];
}
 
//------------------------------------------------------------------------------
inline float
RandomNumberTable::Rand(IndexT key, float minVal, float maxVal)
{
    return minVal + (randTable[key % tableSize] * (maxVal - minVal));
}
 
} // namespace Util
//------------------------------------------------------------------------------
#endif