Subject:
|
Re: CW/CCW, vertex sequence, co-planar, convex, (115kB)
|
Newsgroups:
|
lugnet.cad.dev
|
Date:
|
Sun, 3 Oct 1999 14:39:52 GMT
|
Viewed:
|
1264 times
|
| |
|
|
Steve:
> Jacob:
>
> > Because our clever rendering programs will notice that the
> > first transformation matrix has negative determinant, and
> > therefore will swap the CW and CCW checks.
>
> Why? Having a negative determinate *should* turn subfiles inside-out.
> IMO. That's a useful function. Having programs checking determinates is
> not useful, and wastes rendering time.
Hmm??? Yes you're right (again :-).
Play well,
Jacob
------------------------------------------------
-- E-mail: sparre@cats.nbi.dk --
-- Web...: <URL:http://www.ldraw.org/FAQ/> --
------------------------------------------------
|
|
Message has 1 Reply:
 | | Re: CW/CCW, vertex sequence, co-planar, convex, (115kB)
|
| Jacob: (...) Steve: (...) Jacob: (...) It happens every once in awhile. Actually, which approach *would* be better? Examining the transformation matrix to determine the state of inversion, and adjusting the CW/CCW setting to correct for it, would (...) (25 years ago, 4-Oct-99, to lugnet.cad.dev)
|
Message is in Reply To:
53 Messages in This Thread:
 
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
