CGTalk - Birail 3+ Maya n00b :P

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jasonlg3d

05-07-2003, 03:00 PM

I am new to Maya I've been a maxer for about 3 years but we are switching to Maya here at school for price reasons. I have been watching the 3dbuzz videos and doing a few tutorials. However I am stuck on this subaru tut. Here are the images of what i'm getting. I am using the BiRail 3+ surface and am selecting the 3 profile curves and the 2 rail curves. Here is a link to the tut.

http://www.gmask.com/tutorials/wrx_tutorial/Tutorial/pages/book_pages/Book010.shtml

Here is what its supposed to look like (the pic from tut)

http://www.digitalarrival.com/theirs.jpg

Here is mine

http://www.digitalarrival.com/mine.jpg

Here are my CVs

http://www.digitalarrival.com/MYCVS.jpg

Any tips from you Maya pros out their would be great.

vg1

05-07-2003, 03:56 PM

I know how you feel, I have done this tutorial before. It looks like you do have an equal # of spans on both profile and rail curves, but looking at the image it seems that the CV's on each curve are not quite in line to one another. Try this, select all profile curves and open your rebuild curves option box, set rebuild type to uniform, parameter range to 0 to # Spans, direction to U and V, keep # of span, and degree U and V to three. This should align all your CV's. Birail your surface. It probably will not look exactly like his picture so just duplicate some isoparms and tweek and rebuild with the new isoparms. Sooner or later you will end up with something that is perfect. Good luck.

vg1 (austin tx) hook'em horns

vg1

05-07-2003, 03:59 PM

Also, I forgot to mention, anytime you build or cut curves, make sure tangency set by rebuilding those curves to their same number of spans. Think of it as resetting the curve. This will avoid having problems with tangency and parameterazation later.

jasonlg3d

05-07-2003, 04:15 PM

Hey thanks for the reply. It is looking better now. I dont really understand much about nurbs coming from the max world. Thanks for the tips I'll keep pluggin away.

Gremlin

05-08-2003, 12:39 AM

also, 3+ birail is not limited to just 3, its 3 or more profile curves, are you sure in that tutorial (which im about to follow myself) he isnt using more than 3 profiles? I dunno...
Cheers,
:beer:

Gremlin

05-08-2003, 05:13 AM

checked the tutorial (about to do it myself) and did you try going on to the next step? he adds another profile curve for more control... I dunno? Nurbs have all this kinky crap that I dont understand. :hmm:
Cheers,
:beer:

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