4jcraft/targets/minecraft/world/level/levelgen/synth/ImprovedNoise.h

#pragma once
#include <format>
#include <vector>

#include "Synth.h"

class Random;

class ImprovedNoise : public Synth {
    friend class PerlinNoise_SPU;

private:
    int* p;

public:
    double scale;
    double xo, yo, zo;

    ImprovedNoise();
    ImprovedNoise(Random* random);
    void init(Random* random);

    ~ImprovedNoise();

    double noise(double _x, double _y, double _z);

    double lerp(double t, double a, double b);
    double grad2(int hash, double x, double z);
    double grad(int hash, double x, double y, double z);
    virtual double getValue(double x, double y);
    double getValue(double x, double y, double z);

    void add(std::vector<double>& buffer, double _x, double _y, double _z,
             int xSize, int ySize, int zSize, double xs, double ys, double zs,
             double pow);
};