code: def get_point_in_block(cls, x, y, block_idx, block_size):
          
          if block_idx == 0:
              return y, x
          if block_idx == 1:
              return x, y + block_size
          if block_idx == 2:
              return x + block_size, y + block_size
          if block_idx == 3:
              x, y = block_size - 1 - y, block_size - 1 - x
              return x + block_size, y
          raise IndexError('block index out of range: %d' % block_idx)
docs: Get point coordinates in next block.
  
          Parameters
          ----------
          x : `int`
              X coordinate in current block.
          y : `int`
              Y coordinate in current block.
          block_index : `int`
              Current block index in next block.
          block_size : `int`
              Current block size.
  
          Raises
          ------
          IndexError
              If block index is out of range.
  
          Returns
          -------
          (`int`, `int`)
              Point coordinates.