@Override
 public void onBlockPlacedBy(
     World world, BlockPos pos, IBlockState state, EntityLivingBase player, ItemStack stack) {
   int l = MathHelper.floor_double((double) (player.rotationYaw * 4.0F / 360.0F) + 2.5D) & 3;
   world.setBlockState(pos, getDefaultState().withProperty(FACING, EnumFacing.fromAngle(90 * l)));
 }