Chris H, here is a cube with the checker pattern used as a normal.  It
looks to me like the black areas are down, the white areas are up.  I
thought that this would be a teaching moment for me but I think I'm
sticking to my guns.  Have I really misunderstood this?

Obviously, I know there's no change to the real "surface," but it looks
to me like the normal algorithm is making white things up black things
down.

Post a reply to this message

Attachments:
Download 'norms.jpg' (8 KB)

Preview of image 'norms.jpg'