content: package net.minecraft.world.gen.layer;
  
  public class GenLayerZoom extends GenLayer {
      public GenLayerZoom(long p_i2134_1_, GenLayer p_i2134_3_) {
          super(p_i2134_1_);
          super.parent = p_i2134_3_;
      }
  
      public int[] getInts(int areaX, int areaY, int areaWidth, int areaHeight) {
          int i = areaX >> 1;
          int j = areaY >> 1;
          int k = (areaWidth >> 1) + 2;
          int l = (areaHeight >> 1) + 2;
          int[] aint = this.parent.getInts(i, j, k, l);
          int i1 = k - 1 << 1;
          int j1 = l - 1 << 1;
          int[] aint1 = IntCache.getIntCache(i1 * j1);
  
          for (int k1 = 0; k1 < l - 1; ++k1) {
              int l1 = (k1 << 1) * i1;
              int i2 = 0;
              int j2 = aint[i2 + (k1) * k];
  
              for (int k2 = aint[i2 + (k1 + 1) * k]; i2 < k - 1; ++i2) {
                  this.initChunkSeed((long) i2 + i << 1, (long) k1 + j << 1);
                  int l2 = aint[i2 + 1 + (k1) * k];
                  int i3 = aint[i2 + 1 + (k1 + 1) * k];
                  aint1[l1] = j2;
                  aint1[l1++ + i1] = this.selectRandom2(j2, k2);
                  aint1[l1] = this.selectRandom2(j2, l2);
                  aint1[l1++ + i1] = this.selectModeOrRandom(j2, l2, k2, i3);
                  j2 = l2;
                  k2 = i3;
              }
          }
  
          int[] aint2 = IntCache.getIntCache(areaWidth * areaHeight);
  
          for (int j3 = 0; j3 < areaHeight; ++j3) {
              System.arraycopy(aint1, (j3 + (areaY & 1)) * i1 + (areaX & 1), aint2, j3 * areaWidth, areaWidth);
          }
  
          return aint2;
      }
  
      public static GenLayer magnify(long p_75915_0_, GenLayer p_75915_2_, int p_75915_3_) {
          GenLayer genlayer = p_75915_2_;
  
          for (int i = 0; i < p_75915_3_; ++i) {
              genlayer = new GenLayerZoom(p_75915_0_ + (long) i, genlayer);
          }
  
          return genlayer;
      }
  
      protected int selectRandom2(int p_selectRandom2_1_, int p_selectRandom2_2_) {
          int i = this.nextInt(2);
          return i == 0 ? p_selectRandom2_1_ : p_selectRandom2_2_;
      }
  }
  