|
![](/i/fill.gif) |
Will W wrote:
> One thing I don't understand, though, is the way some of the wedges show
> pronounced variations from the center outward. Especially noticeable in
> red-white-red and red-green-red. Does this have something to do with the
> placement of the light source?
the light source is placed at the exact centre of the wheel, providing
the same illuminative properties to each wedge. the red/*/red areas
are unique in the amount they increase the light that passes through
them, because they are scattering rgb -0.5 AND absorbing rbg -0.5.
what sets those three pieces apart from each other is the emission
value; green is emitting rgb 0.5, white nothing, red emitting rgb -0.5.
--
Tim Cook
http://home.bellsouth.net/p/PWP-empyrean
-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
GFA dpu- s: a?-- C++(++++) U P? L E--- W++(+++)>$
N++ o? K- w(+) O? M-(--) V? PS+(+++) PE(--) Y(--)
PGP-(--) t* 5++>+++++ X+ R* tv+ b++(+++) DI
D++(---) G(++) e*>++ h+ !r--- !y--
------END GEEK CODE BLOCK------
Post a reply to this message
|
![](/i/fill.gif) |