class="kw">package com.hypixel.hytale.procedurallib.condition;

class="kw">import com.hypixel.hytale.procedurallib.property.NoiseProperty;
class="kw">import java.util.Arrays;
class="kw">import javax.annotation.Nonnull;

class="kw">public class NoiseHeightThresholdInterpreter class="kw">implements IHeightThresholdInterpreter {
   class="kw">protected class="kw">final NoiseProperty noise;
   @Nonnull
   class="kw">protected class="kw">final float[] keys;
   @Nonnull
   class="kw">protected class="kw">final IHeightThresholdInterpreter[] values;
   class="kw">protected class="kw">final int length;
   class="kw">protected class="kw">final int lowestNonOne;
   class="kw">protected class="kw">final int highestNonZero;

   class="kw">public NoiseHeightThresholdInterpreter(NoiseProperty var1, @Nonnull float[] var2, @Nonnull IHeightThresholdInterpreter[] var3) {
      if (var2.length != var3.length) {
         throw new IllegalStateException("Length of keys and values are different!");
      }

      checkInterpreterLength(var3);
      this.noise = var1;
      this.keys = var2;
      this.values = var3;
      this.length = var3[0].getLength();
      int var4 = this.length - 1;

      for (IHeightThresholdInterpreter var8 : var3) {
         if (var8.getLowestNonOne() < var4) {
            var4 = var8.getLowestNonOne();
         }
      }

      this.lowestNonOne = var4;
      int var10 = 0;

      for (IHeightThresholdInterpreter var9 : var3) {
         if (var9.getHighestNonZero() > var10) {
            var10 = var9.getHighestNonZero();
         }
      }

      this.highestNonZero = var10;
   }

   @Override
   class="kw">public int getLowestNonOne() {
      class="kw">return this.lowestNonOne;
   }

   @Override
   class="kw">public int getHighestNonZero() {
      class="kw">return this.highestNonZero;
   }

   class="kw">protected double noise(int var1, double var2, double var4) {
      class="kw">return this.noise.get(var1, var2, var4);
   }

   @Override
   class="kw">public double getContext(int var1, double var2, double var4) {
      class="kw">return this.noise(var1, var2, var4);
   }

   @Override
   class="kw">public int getLength() {
      class="kw">return this.length;
   }

   @Override
   class="kw">public float getThreshold(int var1, double var2, double var4, int var6) {
      class="kw">return this.getThreshold(var1, var2, var4, var6, this.getContext(var1, var2, var4));
   }

   @Override
   class="kw">public float getThreshold(int var1, double var2, double var4, int var6, double var7) {
      if (var6 > this.highestNonZero) {
         class="kw">return 0.0F;
      }

      int var9 = this.keys.length;

      for (int var10 = 0; var10 < var9; var10++) {
         if (var7 <= this.keys[var10]) {
            if (var10 == 0) {
               class="kw">return this.values[0].getThreshold(var1, var2, var4, var6);
            }

            float var11 = ((float)var7 - this.keys[var10 - 1]) / (this.keys[var10] - this.keys[var10 - 1]);
            class="kw">return IHeightThresholdInterpreter.lerp(
               this.values[var10 - 1].getThreshold(var1, var2, var4, var6), this.values[var10].getThreshold(var1, var2, var4, var6), var11
            );
         }
      }

      class="kw">return this.values[var9 - 1].getThreshold(var1, var2, var4, var6);
   }

   class="kw">static float lerp(float var0, float var1, float var2) {
      class="kw">return var0 + (var1 - var0) * var2;
   }

   class="kw">private class="kw">static void checkInterpreterLength(@Nonnull IHeightThresholdInterpreter[] var0) {
      int var1 = var0[0].getLength();

      for (int var2 = 1; var2 < var0.length; var2++) {
         if (var0[var2].getLength() != var1) {
            throw new IllegalStateException("ThresholdKeyInterpreter have different size!");
         }
      }
   }

   @Nonnull
   @Override
   class="kw">public String toString() {
      class="kw">return "NoiseHeightThresholdInterpreter{noise="
         + this.noise
         + ", keys="
         + Arrays.toString(this.keys)
         + ", values="
         + Arrays.toString(this.values)
         + ", length="
         + this.length
         + ", lowestNonOne="
         + this.lowestNonOne
         + ", highestNonZero="
         + this.highestNonZero
         + "}";
   }
}