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3D Modeling F.A.Q (Last Updated: 2024 Sep 22 8:55 pm)

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Subject: Converting 3pt poly to a 4pt poly

mouser opened this issue on Jul 29, 2009 · 9 posts
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mouser ( ) posted Wed, 29 July 2009 at 2:00 AM · edited Mon, 23 September 2024 at 7:19 AM

Are there any programs for converting 3pt polys into 4 pt?
I'm considering getting a scanner but the scans all output polygons as 3pt I believe.
Looking for laziest solution.

EnglishBob ( ) posted Wed, 29 July 2009 at 3:19 AM

Attached Link: http://www.buckrogers.demon.co.uk/3d/3d.htm

The laziest solution I know would be Anthony Appleyard's Detriang - but you have to expect a lot of oddly-shaped quads in its output compared to a manual approach. 

dadt ( ) posted Wed, 29 July 2009 at 4:34 AM · edited Wed, 29 July 2009 at 4:36 AM

Wings 3D includes a de-triangulate function with 3 different strengths of the algorithm to choose from.  It does a pretty good job.

FrankT ( ) posted Wed, 29 July 2009 at 3:16 PM

I think Blender has a Tris to Quads function somewhere

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BlackHarmo ( ) posted Wed, 29 July 2009 at 5:11 PM

Yep, Wings does a good job at this.

mouser ( ) posted Fri, 31 July 2009 at 1:46 AM

Well I always did like the Wings interface.
Thanks everyone for the advise.

Daidalos ( ) posted Wed, 05 August 2009 at 11:49 PM

Hey I'm in good company!  I prefer the wings interface over that of say hexagon for example myself!

For a good while now, thought I was the only one who did. Nice to know I'm not all alone. :lol:


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markschum ( ) posted Thu, 06 August 2009 at 12:08 AM

tris to quads works best when its repairing a mesh that was either exported as 3ds (all tris) or  tripled.  Its a good way to get huge numbers of non-planar quads or odd shaped quads which Poser in particular hates.

BlackHarmo ( ) posted Thu, 06 August 2009 at 1:33 AM

Granted, but that's depend of what software/algo you are using. an efficient "untriangulate" or a basic "tri-to-quad" conversion.

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