Trimmed surface to subd 2004-06-15 - By OO's mailbot
Back
The short answer is no, there isn't a mathematically accurate way to
convert a trimmed surface to a subd. This is because the trim is done
in surface space (UV of the surface) after the surface has been
subdivided. To get the same thing, softimage would have to implement
trims within the subd algorithm itself.
You can get close, but you will have a lip where the curvature of the
subd changes to meet the edge of your hole. Use the following trick to
approximate the conversion:
1. Change the Nurbs approximation to 1x1
2. Convert to polygons
3. Create a hole in the polygon using the control points of the curve
you used for the projection.
4. turn subd on.
5. adjust points positions near the hole to taste.
An alternative is to create the hole at render time, by projecting an
image of the hole on the surface.
O
---
Olivier Ozoux's mailing list robot
mailbot@(protected)
On Jun 15, 2004, at 8:08 AM, Wayne Williams wrote:
> Is there any way to get a trimmed surface mesh to be converted to
> poly/sub'd and it respect the trim. Any help would be appreciated.
> -wayne-
>
> http://img10.imageshack.us/img10/8350/trim.jpg
>
> here is a link to what I'm getting as of this moment.
>
> ---
> Unsubscribe? Mail Majordomo@(protected) with the following text in
> body:
> unsubscribe xsi
>
---
Unsubscribe? Mail Majordomo@(protected) with the following text in body:
unsubscribe xsi
|
|
