But again, that would be overloading the functionality of the Separator
node. It would be better to have an Annotation node which, like the
Separator, is a group node with the behavior that its children all face
the camera. As Gavin has stated, we really need to consider 3 issues when
we discuss annotation: depth buffer (do annotations appear on top of
everything?), object size (do objects stay the same size as you move
closer?), and orientation (do objects always face the camera?).
--
chris marrin ,,.
Silicon Graphics, Inc. ,`` 1$`
(415) 390-5367 ,|` ,$`
cmarrin@sgi.com b` ,P` ,,.
mP b" , 1$'
,.` ,b` ,` :$$'
,|` mP ,` ,mm
,b" b" ,` ,mm m$$ ,m ,,`P$$
m$` ,b` .` ,mm ,.`'|$P ,|"1$` ,b$P ,,` :$1
b$` ,$: :,`` |$$ ,:` $$` ,|` ,$$,,`"$$ .` :$|
b$| _m$`,:` :$1 ,:` ,$Pm|` ` :$$,..;"' |$:
P$b, _;b$$b$1" |$$ ,,`` ,$$" ``' $$
```"```'" b$P `""` ""` ,P`
`"` '$$b,,...-'
"As a general rule, don't solve puzzles that open portals to Hell."
- excerpt from "A Horror Movie Character's Survival Guide"