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Old 15-11-2003, 04:40 AM   #1
iron_tick
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Default Nurbs problem, need help

Has anyone experienced this before. I have a Birail patch that goes Hay Wire when i put a lattice defomer on it. I'm including the file, try to put a lattice deformer on this patch and see what happens.
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File Type: mb what_the_hel.mb (14.8 KB, 18 views)
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Old 16-11-2003, 07:04 AM   #2
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I found a way to fix my model but the event itself is still unexplained. If anyone figures it out, please post.
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Old 16-11-2003, 04:52 PM   #3
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Originally posted by iron_tick
I found a way to fix my model but the event itself is still unexplained. If anyone figures it out, please post.
deleteing the history maybe?
when you bi-rail something it depends on those curves for temporary structual support,at least thats what ive found
it maybe something simple but history is what im thinking
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Old 16-11-2003, 08:52 PM   #4
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delete history doesnt work, didnt you download the file??
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Old 16-11-2003, 09:47 PM   #5
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I tried your file and kept getting the same result, no matter what i did. Sorry, i have no idea what the cause is.
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Old 18-11-2003, 01:35 AM   #6
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Hi!


Up to Maya 4.5, the solution would have been to export the wayward surface as a DXF file and then reimport it. Sadly, with Maya 5 this workflow is no longer possible.

What you can do (and it worked for me), is to use the script I have attatched (written by Paul Anand).

It's called nurbsExtractCurves, and does just that - it extracts a series of curves out of a nurbs surface, either in U or V direction.

After you did this, all you need to do next is to collect these and then loft. Voila!

I applied a Lattice to the new surface and it worked like a charm.

I recommend to create two shelfbuttons, one for every surface direction.

These are the commands you'd need to drag to your shelf:

For curves from U direction:

nurbsExtractCurves -u 1 0

For curves from V direction:

nurbsExtractCurves -v 1 0


NURBS sometimes show this strange behaviour. No idea why - maybe they're getting woozy from their own math.

The DXF route used to help, but...
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File Type: mel nurbsextractcurves.mel (2.4 KB, 9 views)
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Last edited by Renderizer : 18-11-2003 at 01:38 AM.
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Old 18-11-2003, 04:17 AM   #7
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what makes you think maya 5 cant export DXF? i exported and imported and that cleaned it up. thats the fix i was refering to. but still this is strange how Nurbs can react sometimes.
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Old 18-11-2003, 01:17 PM   #8
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The DXF route somehow doesn't work for me, as it doesn't for others I know of.

Which exporter plugin did you use? What settings?

Would be interesting to know.

Anyway, this script works pretty well too.

And yes - NURBS are strange things. Must come from the same source as do women... :p
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