RenderGlobal.java 文件源码

private Set<EnumFacing> getVisibleFacings(BlockPos pos)
{
    VisGraph visgraph = new VisGraph();
    BlockPos blockpos = new BlockPos(pos.getX() >> 4 << 4, pos.getY() >> 4 << 4, pos.getZ() >> 4 << 4);
    Chunk chunk = this.theWorld.getChunkFromBlockCoords(blockpos);

    for (BlockPos.MutableBlockPos blockpos$mutableblockpos : BlockPos.getAllInBoxMutable(blockpos, blockpos.add(15, 15, 15)))
    {
        if (chunk.getBlockState(blockpos$mutableblockpos).isOpaqueCube())
        {
            visgraph.setOpaqueCube(blockpos$mutableblockpos);
        }
    }

    return visgraph.getVisibleFacings(pos);
}