Maya for 3D Printing - Rapid Prototyping
In this course we're going to look at something a little different, creating technically accurate 3D printed parts.
# 1 15-11-2003 , 04:40 AM
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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.

Attached Files
File Type: mb what_the_hel.mb (14.8 KB, 375 views)

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And after calming me down with some orange slices and some fetal spooning,
E.T. revealed to me his singular purpose.

--TOOL, 10,000 Days---

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# 2 16-11-2003 , 07:04 AM
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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.


<html><font size=2>
<font color="blue">
And after calming me down with some orange slices and some fetal spooning,
E.T. revealed to me his singular purpose.

--TOOL, 10,000 Days---

</font></pre>
</html>
# 3 16-11-2003 , 04:52 PM
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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

# 4 16-11-2003 , 08:52 PM
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delete history doesnt work, didnt you download the file??


<html><font size=2>
<font color="blue">
And after calming me down with some orange slices and some fetal spooning,
E.T. revealed to me his singular purpose.

--TOOL, 10,000 Days---

</font></pre>
</html>
# 5 16-11-2003 , 09:47 PM
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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.

# 6 18-11-2003 , 01:35 AM
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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. user added image

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. user added image

The DXF route used to help, but...

Attached Files
File Type: mel nurbsextractcurves.mel (2.4 KB, 394 views)

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Last edited by Renderizer; 18-11-2003 at 01:38 AM.
# 7 18-11-2003 , 04:17 AM
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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.


<html><font size=2>
<font color="blue">
And after calming me down with some orange slices and some fetal spooning,
E.T. revealed to me his singular purpose.

--TOOL, 10,000 Days---

</font></pre>
</html>
# 8 18-11-2003 , 01:17 PM
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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


Subdivide and conquer!

Free your mind, and your ass will follow!
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