/// <summary>
/// Returns faces that are visible for the voxel at the given index in the given volume.
/// </summary>
/// <returns>The faces for.</returns>
/// <param name="volume">Volume.</param>
/// <param name="voxel">Voxel.</param>
public static IEnumerable<Face> VisibleFacesFor(VoxelContainer chunk, IntVector3 voxel)
{
var result = new List<Face>();
var faceVector = new IntVector3(voxel);
if (chunk.GetVoxel(voxel).Weight > 0)
{
faceVector.Y += 1;
if (chunk.GetVoxel(faceVector).Weight <= 0)
result.Add(Face.Top);
faceVector.Y -= 2;
if (chunk.GetVoxel(faceVector).Weight <= 0)
result.Add(Face.Bottom);
faceVector.Y += 1;
faceVector.X -= 1;
if (chunk.GetVoxel(faceVector).Weight <= 0)
result.Add(Face.Left);
faceVector.X += 2;
if (chunk.GetVoxel(faceVector).Weight <= 0)
result.Add(Face.Right);
faceVector.X -= 1;
faceVector.Z -= 1;
if (chunk.GetVoxel(faceVector).Weight <= 0)
result.Add(Face.Front);
faceVector.Z += 2;
if (chunk.GetVoxel(faceVector).Weight <= 0)
result.Add(Face.Back);
}
return result;
}
public abstract Mesh GenerateMesh(VoxelContainer data, IntVector3 start, IntVector3 end);
