#include "ShapedNoise.h"

ShapedNoise::ShapedNoise(Noise* delegateNoise)
    : delegateNoise(delegateNoise),
      neighborOffset(1)
{}

ShapedNoise ::~ShapedNoise()
{
    delegateNoise->release();
}

void ShapedNoise::setNeighborOffset(double offset)
{
    neighborOffset = offset;
}

double ShapedNoise::getNoise(double x, double y, double z)
{
    double max = 0;
    double noise = delegateNoise->getNoise(x, y, z);
    double value
        = abs(noise - delegateNoise->getNoise(x + neighborOffset, y, z));
    max = MAX(max, value);
    value = abs(noise - delegateNoise->getNoise(x, y + neighborOffset, z));
    max = MAX(max, value);
    value = abs(noise - delegateNoise->getNoise(x, y, z + neighborOffset));
    max = MAX(max, value);
    return max;
}

int ShapedNoise::getSeed() const
{
    return delegateNoise->getSeed();
}