Hi All,

I'm trying to export some geo to an obj file. Exportings seems to work fine but when importing into Maya I get an error:

// Error: line 0: Error reading file. //

Not very helpfull.

I also tried importing into Unreal. This does work but it says:

object_x has degenerate tangent bases which will result in incorrect shading

Anybody knows what this means and how to fix this?

The things I already tried:
1. exporting to bgeo > and then converting to obj using the gwavefront c-line-tool
2. scale everything up
3. attribdelete with * set to everything
4. delete * groups
5. added a facet node with remove degenarate, cusp and post-compute
6. use a rop_geometry to export the geo
7. tried adding a uvunwrap
Nothing works….

It's possible that your geometry has some degenerate polygons that other packages don't handle well. This is quite possible if you do some sort of fracturing. Maybe you could try using the Clean SOP or PolyDoctor SOP to clean these up? It might be helpful if you post a .bgeo file of the problematic geometry.

Hi Andrew,

Thanks for the reply.

I tried the PolyDoctor but then Houdini crashed, when I reopen somehow my network doesn't cook anymore and this also applies to copies of the file. So that's weird.

With one of the earlier .obj's I exported I tried importing that into Blender. That worked well. Than from Blender I exported to .fbx and imported that into Maya. That worked.

I'll try and fix my scene and see if the PolyDoctor helps cleaning up the geo.

Cheers

Okay, things are cooking again.

Tried the polydoctor. And used a delete node to get rid of some repaired faces. Everything imports fine into Maya now.

Thanks very much!!