public void AddPerlinNoise(float f, float height)
 {
     for (int i = 0; i < Size; i++)
     {
         for (int j = 0; j < Size; j++)
         {
             Heights[i, j] += (Perlin.Generate2D(f * i / (float)Size, f * j / (float)Size)) * height;
         }
     }
 }