Full Version: Polygon to NURBS / solids conversion

Show messages:  1-11  12-31  32-35

"Any chance of continued Subdiv development, like triangle subdivision optimization? It would be fantastic if you could make a smoothly subdivided solid from a triangulated, decimated mesh, like the output of Zbrush Decimation Master or Blender's Decimate modifier."

Have you tried Instant Meshes?

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Hi Chris,

Yep, I know Instant Meshes, but I prefer Zbrush's ZRemesher. My triangle subdivision request is related to the triangulated output of ZBrush's Decimation Master, which often keeps details better than if you retopologize, and with fewer polygons.

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Hi
I didn't know and now its on my desktop. Thanks for the tip:) When you post you always help someone
Keith

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Glad this topic introduced you to something new, Keith.

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Hi guys,

It's been a while since we had this discussion about poly to NURBS conversion. Any news on this subject?

I'm still hesitating to go for ViaCAD Pro and Powerpack Pro, but it's a costly investment, and I need it only for specific cases, every now and then.

The most important property of a poly to NURBS conversion would be the ability to convert detailed high-polygon meshes to NURBS. ViaCAD's Powerpack Pro seems to do a decent job in that area:

http://masterviacad.com/powerpackoverview/styled-50/page35.html

Regards,

Metin

———————

visualization • illustration • animation • 3D design — https://metinseven.com

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Hi Metin,

i think it is the best commercial option (price wise), because if
i remember correctly solutions like T-Splines can't handle that
high quad poly count, like shown in the examples.

Regards
Stefan

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Thanks Stefan,

I guess so too. T-Splines are very comparable to Max's Subdivision command for MoI, and indeed work best with a relatively low quad poly count.

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Hi Metin,

I originally purchased VIACAD Pro and yes it does do a good job of conversion but as a owner of ZBRUSH also I found that creating a clean quad mesh using the Z-Remesher function I could control the quad count to a higher degree and exporting that as an OBJ and importing using Max's OBJ import and SUBD commands I could get leaner surfaces - VIACAD would place many patches over surface creases - if you have a file in mind send it to me and I will do viacad/zbrush comparison.

regards
Alex.

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Hi Alex,

while ZRemesher does indeed mostly creates nice quad meshes i had recently
pinching issues at 3 edges poles when doing a T-Splines conversion with
Fusion360. The solution was then to trim the small pinching areas in MoI
and network the holes.

Regards
Stefan

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Hi Metin, well you may want to hold off on an expensive purchase for this function for a couple months because there is a possibility it could show up in MoI v4. I don't know for sure yet though.

- Michael

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Hi Michael,

are you taking about the possibility of a function like ViaCAD or T-Splines has,
or a simpler solution like Max's subd script?

In case of the first one that would be super awesome!

Regards
Stefan

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Hi Stefan, something more like the first one. But personally I'm more concerned with surface quality than with having a smaller number of larger surfaces.

- Michael

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Hi Michael,

wow, that would be cool and i can understand your concern. Hopefully
all goes well, like you expect, in case it will make it into V4.

Best regards
Stefan

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Hi Michael,

Wow, that would be a fantastically useful, much-desired addition to MoI, many thanks for letting us know!

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Hi Alex,

Many thanks for your offer, much appreciated.

Right now I haven't got a model to convert yet. There's a possible new modelling job around the corner that would require high-poly to solid conversion, that's why I thought to do some preliminary research again.

It's exciting to read that Michael is considering adding such an option to MoI. That would make MoI a one-stop solution for polygons to NURBS and vice versa.

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Hi Stefan,

Some types of models are hard to auto-retopologize. I've found that sometimes 3D-Coat's Autopo does a slightly better all-quads retopology than ZRemesher.

Here's a comparison I recently created about this subject:

https://www.metinseven.com/blog/Ag4W/3d-coat-vs-zbrush-auto-retopology-comparison

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Very cool comparaison!

Not sure this following is exactly the same subject but...

http://topologyguides.com 5 pages!

https://giancr.com/en/essential-tips-hard-surface-small-details-part-01/ 3 Pages

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Hi Metin,

maybe it is only me but i had never luck with getting better auto retopo
result with 3DCoat. I stay with ZBrush and fix later those little pole issues
with MoI.

Regards
Stefan

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Thanks Pilou! I didn't know the second link yet. Good subdivision modeling advice is always useful.

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Hi Stefan,

The auto-retopo results are very dependent on the mesh features. I do know that Autopo has been improved a lot since the first versions, and is now at least on par with ZRemesher.

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Show messages:  1-11  12-31  32-35