Hey all,

I'm exporting some geo from Houdini using FBX and am running into something odd.

When I export my geo through the menu (file>export) it renders out fine.
When I export it using a filmBOX node in a ROP it renders out triangulated.

Anyone know what the difference between the two is?
I'm running 9.5.379.

I've tried replicating the problem on basic geometry but havn't had any sucess in repeating the problem.

Wanted to check here before I delve deeper into the specifics of my setup.

Thanks
Pav

There should be no difference between these two methods. Internally, they all go through exactly the same code, it's just the UI wrappers that are different.

It could be a bug, or it could be a difference in settings between the UI and the ROP node. In general, the exporter will triangulate things when it encounters an animated object that has particles, changing number of vertices over the animated period, or any primitive types which the exporter doesn't support directly.

If the settings are exactly the same in both cases, could you attach a file which demonstrates the problem so I could take a look at it?

Hey,

Here's an example.
Not the most basic unfortunately, I couldn't get it to repeat on
a really simple scene.
the ROP triangulates, going through the menu works fine.

PS: I've been chatting to Jeff about this as well.

Cheers
Pav

Very interesting. I can't reproduce this - exporting through the UI and exporting through the ROP produces identical files, both animated and single-frame. I've tested both importing them back and even running a diff on the ASCII versions, and they are identical, as I would expect.

Which version of Houdini are you running? And on which OS?

hmm… that is interesting.
I'm running 9.5.379 on windows vista 64.
I've run a diff on the two FBX files I get and there's a big difference.
I've attached them, in case it gives you some more clues…

Cheers
Pav