FactoryCraft-Server/NoiseTest/NoiseCombiner.h

#pragma once

#include <Noise.h>

class NoiseCombinerM : public Noise
{
private:
    Noise* a;
    Noise* b;

public:
    NoiseCombinerM(Noise* a, Noise* b)
        : Noise(),
          a(a),
          b(b)
    {}

    virtual int getSeed() const
    {
        return 0;
    }

    virtual double getNoise(double x, double y, double z)
    {
        return (((a->getNoise(x, y, z) - 0.5) * 2) * (b->getNoise(x, y, z)) * 0.9 + 0.1)
              / 2 + 0.5;
    }
};

class NoiseCombinerA : public Noise
{
private:
    Noise* a;
    Noise* b;

public:
    NoiseCombinerA(Noise* a, Noise* b)
        : Noise(),
          a(a),
          b(b)
    {}

    virtual int getSeed() const
    {
        return 0;
    }

    virtual double getNoise(double x, double y, double z)
    {
        return a->getNoise(x, y, z)* 0.7 + b->getNoise(x, y, z) * 0.3;
    }
};

class RescaleNoise : public Noise
{
    Noise* n;
    double factor;

public:
    RescaleNoise(Noise* n, double factor)
		: Noise(),
		  n(n),
		  factor(factor)
	{}

    virtual int getSeed() const
    {
		return n->getSeed();
	}

    virtual double getNoise(double x, double y, double z)
    {
		return MAX(MIN(n->getNoise(x, y, z) * factor, 1.0), 0.0);
	}
};

class FlattenNoise : public Noise
{
    Noise* n;
    double factor;
    double minValue;

public:
    FlattenNoise(Noise* n, double factor, double minValue)
        : Noise(),
          n(n),
          factor(factor),
          minValue(minValue)
    {}

    virtual int getSeed() const
    {
        return n->getSeed();
    }

    virtual double getNoise(double x, double y, double z)
    {
        return MAX(0, MIN(1, (n->getNoise(x, y, z) - 0.5) * factor + 0.5 + minValue));
    }
};

class NegatedNoise : public Noise
{
    Noise* n;

public:
    NegatedNoise(Noise* n)
        : Noise(),
          n(n)
    {}

    virtual int getSeed() const override
    {
        return n->getSeed();
    }

    virtual double getNoise(double x, double y, double z) override
    {
        return 1 - n->getNoise(x, y, z);
    }
};