Mesh to solid

[gheflorian]

Hello everyone,

I managed to do some very nice meshes with Photoscan but now I need the models to be able to make them solids or somehow be able to import them in AutoCAD.
The only solution I have until now is to import the model into Rhinoceros, transform mesh to NURBS. Export the NURB in IGES and then import it into AutoCAD. Or I could just export from Photoscan to FBX. The problem is that I cannot import the model with to many faces.

[Wishgranter]

What type of model it is ? because converting to Solid can be time consuming and problematic for "organic"or complicated shape....

PM me for details.....

[gheflorian]

Never mind. I managed to do it Thank you for the fast reply!

[erik leeman]

The problem with organic geometry conversions always is the huge number of resulting faces that 3D CAD software really can't handle. But there is a (largely unknown) solution for that: T-Splines.

Using the tools and method I described here:
https://grabcad.com/library/robot-mesh-to-solid
and here:
https://grabcad.com/library/aprilia-rs250-frame-3d-scan-by-tonis-vanaselja-part-two
you can do things like this:
https://grabcad.com/library/sparco-helmet-nurbs-conversion-of-tonis-vanaselja-s-3d-scan

With complex shapes it can be quite a bit of work, but the results are worth the effort!

Cheers!

Erik

[someDude]

Never mind. I managed to do it Thank you for the fast reply!

could you share how you did it?
thnx

[gheflorian]

Sorry for the late answer I just exported the FBX and use it. I still don't know what can I use in AutoCAD to also have texture. Or I guess is not possible?

[chrisd]

The problem with organic geometry conversions always is the huge number of resulting faces that 3D CAD software really can't handle. But there is a (largely unknown) solution for that: T-Splines.

As I understand it, T-Splines is not intended for poly to nurbs conversion. The poly model is used as a control "cage" to modify or deform the nurbs model in ways you can't do with nurbs tools.

While T-Splines does produce a nurbs model from polys, it can only do so with a very low res, or decimated version. I believe 500,000 polys is the max it can handle.

If you need to convert millions of polys to nurbs, you will need something like Geomagic.

[Lambo]

If you export as wrl, you can get it with textures. Obj can retain the texture coordinates also but then you have to re-apply the textures inside the software you are working on.
Ply also should go out with textures.
Strange thing is that I can move objects with color and textures in FBX format between software packages too??
Leo