From this free object by Hrabale (11 000 polys )
https://sketchfab.com/3d-models/bota-5a4be383a62c4237b0eadb82f1ec9f8a

With the Native SubD / Create (28 000 at the end) 3 minutes ...heavy to manipulate!


With quads before import (11 000 quads)
With the Native SubD / Create ... 10 seconds! 837 Nurbs faces!


With ImportOBJ by Max Smirnov ...2 minutes... 11 000 quads faces nurbs


Render the 2 methods exports from Moi


So seems we must export from the first heavy image and method if we want more precision of the original model ! :)
Or improve the method of quadrangulation inside the "third party Poly prog"!

Or have inside SUbD something for regulate the precision ?

Hi Pilou, those are interesting results but what is it that you're trying to accomplish with converting this model?

If you want to make a rendering why not just render the original model instead of doing any type of conversion at all?

Conversion will work best on a model that was designed from the beginning as a sub-d model. Much of the detail in the original model here is in the textures, not really so much in the geometry itself. So focusing on converting just the geometry is not going to replicate the original detail really.

- Michael

It's just test for import something from Obj format inside Moi for make anything with it after! :)

So here in double the number of quads before the importation precision is better...
time is a little more also.. 10 s to 2 minutes :)



the wear and tear of time :)

Hi Pilou, since it is not a sub-d model it is not expected that the sub-d converter will work very well on that case.

MoI is not the right tool to work on a model with that kind of data, it is recommended to use a polygon modeling program to work on a polygon model like you have there.

- Michael

Yes but it's cool to have the possibility to import one OBJ file directly and transfom it in Nurbs ... ;)

Hi Pilou,

> Yes but it's cool to have the possibility to import one OBJ file directly and transfom it in Nurbs ...

I don't understand what you would be gaining here by making a poorly constructed Nurbs model.

If your OBJ file is made up of triangles and has much of the detail as textures on it, it's not going to convert very well. The converter is not intended to be used on that type of model data.

The type of data that can convert well is when the model in the OBJ file was constructed as a sub-d model, not as a triangle model.

- Michael

So SubD for Quadrangles meshes, ImportObj for the rest if possible...no problem...
And normally today even triangles mesh can be converted in quads with same precision ?....

I find just magic that the mix should be possible (Poly/Nurbs) :)

Because make that in Nurbs is some painful...seems perfect inside moi!

Hi Pilou,

re:
> So SubD for Quadrangles meshes, ImportObj for the rest...no problem...

I'd recommend SubD conversion for meshes that were built for sub-d smoothing, and for the rest use a polygon modeling program instead of MoI since it's not the right kind of data to use with MoI.

- Michael

Yes but that can be also useful say for calculate ergonomy to put a human "poly" model inside a "nurbs" vehicle design model...
and if this human model can be also some realistic that will be better! :)

So I suppose this human model must be created in "SubD smoothing" as you said for more easy importation...