/*
 * =====================================================================================
 *
 *       Filename:  noise.hpp
 *
 *    Description:  Defining Perlin Noise 
 *
 *        Version:  1.0
 *        Created:  01/07/2023 10:52:51 PM
 *       Revision:  none
 *       Compiler:  gcc
 *
 *         Author:  Cara Salter (muirrum), cara@devcara.com
 *   Organization:  
 *
 * =====================================================================================
 */
#include <vector>
#include <stdlib.h>

class PerlinNoise {
    // permutation vector
    std::vector<int> p;
    public:
        PerlinNoise();
        PerlinNoise(unsigned int seed);
        double noise(double x, double y, double z);
    private:
        double fade(double t);
        double lerp(double t, double a, double b);
        double grad(int hash, double x, double y, double z);
};