class="kw">package com.hypixel.hytale.builtin.hytalegenerator.density;

class="kw">import com.hypixel.hytale.builtin.hytalegenerator.noise.FastNoiseLite;
class="kw">import javax.annotation.Nonnull;
class="kw">import javax.annotation.Nullable;
class="kw">import org.joml.Vector3d;

class="kw">public class FastGradientWarpDensity class="kw">extends Density {
   class="kw">private class="kw">static class="kw">final double HALF_PI = Math.PI / 2;
   @Nullable
   class="kw">private Density input;
   class="kw">private class="kw">final double warpScale;
   @Nonnull
   class="kw">private class="kw">final FastNoiseLite warper;
   @Nonnull
   class="kw">private class="kw">final FastNoiseLite.Vector3 rWarpedPosition;
   @Nonnull
   class="kw">private class="kw">final Density.Context rChildContext;
   @Nonnull
   class="kw">private class="kw">final Vector3d rPosition;

   class="kw">public FastGradientWarpDensity(@Nonnull Density var1, float var2, float var3, int var4, float var5, float var6, int var7) {
      if (var4 < 0.0) {
         throw new IllegalArgumentException();
      }

      this.warpScale = var5;
      this.input = var1;
      this.warper = new FastNoiseLite();
      this.warper.setSeed(var7);
      this.warper.SetFractalGain(var3);
      this.warper.SetFractalLacunarity(var2);
      this.warper.setDomainWarpType(FastNoiseLite.DomainWarpType.OpenSimplex2);
      this.warper.setFractalOctaves(var4);
      this.warper.setDomainWarpAmp(var6);
      this.warper.setDomainWarpFreq(var5);
      this.rWarpedPosition = new FastNoiseLite.Vector3(0.0, 0.0, 0.0);
      this.rChildContext = new Density.Context();
      this.rPosition = new Vector3d();
   }

   @Override
   class="kw">public double process(@Nonnull Density.Context var1) {
      if (this.input == null) {
         class="kw">return 0.0;
      }

      this.rWarpedPosition.x = var1.position.x;
      this.rWarpedPosition.y = var1.position.y;
      this.rWarpedPosition.z = var1.position.z;
      this.warper.DomainWarpFractalProgressive(this.rWarpedPosition);
      this.rPosition.set(var1.position);
      this.rChildContext.assign(var1);
      this.rChildContext.position = this.rPosition;
      this.rChildContext.position.set(this.rWarpedPosition.x, this.rWarpedPosition.y, this.rWarpedPosition.z);
      double var2 = this.input.process(this.rChildContext);
      this.rChildContext.clearReferences();
      class="kw">return var2;
   }

   @Override
   class="kw">public void setInputs(@Nonnull Density[] var1) {
      if (var1.length == 1) {
         this.input = var1[0];
      } else {
         this.input = null;
      }
   }
}