package net.minecraft.world.gen;
import java.util.Random;
import net.minecraft.util.MathHelper;
public class NoiseGeneratorOctaves extends NoiseGenerator
{
/**
* Collection of noise generation functions. Output is combined to produce different octaves of noise.
*/
private NoiseGeneratorPerlin[] generatorCollection;
private int octaves;
public NoiseGeneratorOctaves(Random par1Random, int par2)
{
this.octaves = par2;
this.generatorCollection = new NoiseGeneratorPerlin[par2];
for (int var3 = 0; var3 < par2; ++var3)
{
this.generatorCollection[var3] = new NoiseGeneratorPerlin(par1Random);
}
}
/**
* pars:(par2,3,4=noiseOffset ; so that adjacent noise segments connect) (pars5,6,7=x,y,zArraySize),(pars8,10,12 =
* x,y,z noiseScale)
*/
public double[] generateNoiseOctaves(double[] par1ArrayOfDouble, int par2, int par3, int par4, int par5, int par6, int par7, double par8, double par10, double par12)
{
if (par1ArrayOfDouble == null)
{
par1ArrayOfDouble = new double[par5 * par6 * par7];
}
else
{
for (int var14 = 0; var14 < par1ArrayOfDouble.length; ++var14)
{
par1ArrayOfDouble[var14] = 0.0D;
}
}
double var27 = 1.0D;
for (int var16 = 0; var16 < this.octaves; ++var16)
{
double var17 = (double)par2 * var27 * par8;
double var19 = (double)par3 * var27 * par10;
double var21 = (double)par4 * var27 * par12;
long var23 = MathHelper.floor_double_long(var17);
long var25 = MathHelper.floor_double_long(var21);
var17 -= (double)var23;
var21 -= (double)var25;
var23 %= 16777216L;
var25 %= 16777216L;
var17 += (double)var23;
var21 += (double)var25;
this.generatorCollection[var16].populateNoiseArray(par1ArrayOfDouble, var17, var19, var21, par5, par6, par7, par8 * var27, par10 * var27, par12 * var27, var27);
var27 /= 2.0D;
}
return par1ArrayOfDouble;
}
/**
* Bouncer function to the main one with some default arguments.
*/
public double[] generateNoiseOctaves(double[] par1ArrayOfDouble, int par2, int par3, int par4, int par5, double par6, double par8, double par10)
{
return this.generateNoiseOctaves(par1ArrayOfDouble, par2, 10, par3, par4, 1, par5, par6, 1.0D, par8);
}
}