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View Full Version : Nurbs Trim dificulty

TuLe
08-25-2003, 05:14 PM
Hello ever1!!!

I'm modeling a car right now but so far i encontered a strange problem...
here's the deal:

I got the hood of my car and i wanna make two air "holes" like vents on top of it... So i generate some curves and lofted them, next i did a circular filled between the two surfaces (hood and air ducts) for details... so far so good...
Them i trimmed the ducts part and next tryed to trim the hood itself, so i can have the hole for the air duct on top of it...
That's when the problem occours... After the trim is done i get an all messed nurbs hood with black spots all over it and a really ugly nurbs surface, all dented and bad layed...!

I tryed to delete all the history on the hood, fillets and air duct but i still can't have a nice trimed surface...!

Any one has had this before?
Any help would be great...!

:Thanks:
TuLe
08-25-2003, 05:57 PM
Ok i got a fix for my first problem... Having deleted "all by type history" kept my nurbs surface nicely layed...
But now i have a new bug on the trimed vents... Seems like there's some left overs on the surface around the fillet edge!
Here's the image:

Nurbs Leftovers (http://www.digitaldome.hpg.ig.com.br/images/nurbs_trim.jpg)

Now i really don't know what to do... I tried to find some patchs or hulls for thoes little dents but there ar none...!
Some help would be nice!

:Thanks:
bluedragon128
08-25-2003, 06:16 PM
Those look like the typical thing left by a trim. If you render those should not be there. I was told that has to do with the graphics card. You can also increase the tessellation and turn on Smooth Edge and/or Edge Swap and adjust the values to get a smoother look. Hope that helps.
dmcgrath
08-25-2003, 09:10 PM
Yes I believe that it is just an illusion on the viewports. It should not be a problem when the render time comes. Bumping up teh tesselation might help, but you shouldn't worry about what you see in the shaded mode on your desktop.
TuLe
08-25-2003, 10:01 PM
Yeah ... :beer:

Thanks fellas... I just fixed this little "bug" raising the "curve precision shaded" on the surface attribute window...!

Now i have more "stamina" to go on with my model...!

Thanks again for your help!
As aways CGtalk members prove to be the best source for advices around!!!

:Thanks:
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