Obj2mesh and mesh clutter

radiance-general
1

Hi,

I have a surface I’m trying to convert to a mesh using obj2mesh. The tool is complaining about some vertices being connected to too many triangles, which is a limitation I’m familiar with, but would still prefer to use this over obj2rad due to efficiency.

When examining my obj file, I believe the problem occurs at the edge of the surface, where small triangles start to concentrate. Is there some trick or method to overcome this problem?

Thanks in advance

2

You can try increasing the -n and/or -r values of obj2mesh, but ultimately you may have to simplify your geometry. Even using obj2rad, you would run into a similar problem with oconv, as both programs ultimately need to produce an octree for rendering.

What is the error message you are getting, exactly?

3

The error is:

“obj2mesh: internal - too many patch triangles in addmeshtri”.

Thanks

4

Out of curiosity, can you recompile with the linked version of ray/src/common/mesh.c to see if your outcome is any different? Or, alternatively, can you send me your obj2mesh input(s)?

https://www.radiance-online.org/cgi-bin/viewcvs.cgi/ray/src/common/mesh.c?revision=2.29

5

Thanks, I’ll try that as soon as possible.