OpenMinecraft.InfdevHandler.GetPrelimHeightAt C# (CSharp) Method

        internal override double GetPrelimHeightAt(int px, int py)
        {
            int X = px / ChunkX;
            int Z = py / ChunkZ;

            int x = px - ((px >> 4) * ChunkX); //(px >> 4) & 0xf;
            int y = py - ((py >> 4) * ChunkZ); //(py >> 4) & 0xf;

            Vector2i i = GetChunkHandle(X, Z);
            if (mChunkHeightmaps.ContainsKey(i))
                return mChunkHeightmaps[i][x, y];
            return 0;
        }