Hi Pilou, the Sub-D converter in MoI is designed to convert a mesh that is configured to be used as a Sub-D control cage.
Your object is not that type of mesh. You've got a dense triangle mesh generated from marching cubes output which is a very different type of mesh data.
So that is normal that Sub-D > Create > From file in MOI won't work with your file.
A Sub-D control cage should be formed with all quads with a relatively sparse structure.
Yours is nothing like that, it looks like this with 90892 triangles:
Thx for the Info I have suspected that! :)
So I must Decimate and/or make some auto remeshing with some tools like
this free one! ;)
... if i want really put this file in Moi for any reasons! ;)
re:
> So I must Decimate and/or make some auto remeshing with some tools like
> this free one! ;)
> ... if i want really put this file in Moi for any reasons! ;)
Yes you would need to significantly rework this mesh to be able to bring it into MoI.
In general you would be better off using a polygon mesh editing program to work on that type of data, not MoI.
re:
> It was just a test for see the nature of the 3d object given by the Ai!
>
> In fact that is just a quasi patato where an image is projected!
I see. But MoI does not really work very well as an "obj file viewer", the SubD conversion is meant to process a specific kind of OBJ mesh that has been set up to be processed with subdivision smoothing.
Other programs would be better to use for viewing an .obj file's structure. MoI is not designed to be used for that.
Instant mesh is really not great at this quad recontruction job, I usually get way better result using Quadremesher : https://exoside.com/
While still producing cage mesh a tad complex for the Subd to Nurbs, I think it does a decent job at recreating the polyflow.
I think Rhino does have a version of that same quadremesher now too for that kind of complex mesh to Nurbs conversion.
Well it's basically zremesher as standalone for most DCC ... if we talk about price Zbrsuh is like 500$/year subscription only now ?
Instant mesh was a nice milestone, but it's really bad ... main flow direction is often weird, high valance points are all cluttered (reason your Nurbs conversion is so badly diced). On the top it often create non watertight mesh and even broken geometry. I mean if you a really interest to quickly convert scan/triangulated soup data into "usable" nurbs model I don't think there is any better alternative for the moment (beside manual retopo)
PilouTriangleMesh.jpg
