#include "RandNoise.h" #include #include #include "Constants.h" #include "FastNoiseLite.h" #include "FastNoiseWrapper.h" #ifndef RAND_MAX # define RAND_MAX 0x7FFF #endif RandNoise::RandNoise(int seed) : Noise(), seed(seed) { srand(seed); table = new unsigned short[RandNoiseTableSize]; for (int i = 0; i < RandNoiseTableSize; i++) { int r = rand(); table[i] = (unsigned short)(r % RAND_MAX); } } RandNoise::~RandNoise() { delete[] table; } int RandNoise::getSeed() const { return seed; } double RandNoise::getNoise(double x, double y, double z) { int index = seed % RandNoiseTableSize; index = abs(table[index] + (int)x) % RandNoiseTableSize; index = abs(table[index] + (int)y) % RandNoiseTableSize; index = abs(table[index] + (int)z) % RandNoiseTableSize; return (double)table[index] / RAND_MAX; }