private static ChunkView Visibility(ChunkBlocks blocks)
{
var iterator = blocks.GetIterator();
var directions = System.Enum.GetValues(typeof(VoxelFace));
var visibility = new ChunkView(blocks.Length, blocks.Height, blocks.Depth);
foreach (var coord in iterator)
{
var type = blocks.Blocks[coord.x, coord.y, coord.z];
if (!type.isVisible)
{
visibility.Blocks[coord.x, coord.y, coord.z] = true;
continue;
}
visibility.Blocks[coord.x, coord.y, coord.z] = true;
foreach (int face in directions)
{
var neighbour = coord + Voxel.Direction((VoxelFace)face);
if (blocks.TryGet(ref neighbour, out BlockType neighbourType) && neighbourType.IsObscure())
{
visibility.Faces[coord.x, coord.y, coord.z, face] = false;
}