OTOY Forums

Hi everyone,

I'm having troubles exporting hair&fur from 3ds Max 2018 to Octane 3.08 Standalone.

I converted the hair to splines and then exported to .ABC Ogawa but then when I import the file in Octane I get these strange shapes on each sides of the strains.

Moreover, I have no control on hair thickness : they stay the same no matter what number I put in the Octane import settings.

Does anyone know by any chance how I could get this right ? I attached an image showing the issue.

Thanks,

Yugs

Hi,
it seems that the W coordinates is working only from 0.1 to 0.9, and not from root to top, weird.
About the thickness, after importing the .abc node, press the tool icon in the node inspector to change the thickness of your splines: Note that from 3.07 you need to use the thicknees value at the same scale used to import the splines.
ciao Beppe

Thanks Beppe, this is weird indeed.

About Default hair thickness, no matter what value I enter (I tried 1, 0.1, 0.01 etc.) in the settings, it remains the same in the viewport.

A potential lead to understanding what's going on : after searching the forums a bit more, I downloaded the .abc file you linked in this topic viewtopic.php?f=9&t=41212&p=195839&hili ... ic#p195839 and everything works fine. The information below the viewport states 54492 hair segments and 1 mesh, while for my .abc file exported from 3ds Max it states 12684 hair segments for 1000 meshes. I only exported splines, so isn't it strange that I also have meshes (1 per hair btw) ?

Cheers,

Yugs

Hi Yugs,
spline works well exporting from 3dsMax to .orbx.
Unpacking .orbx and importing .abc spline works well too.
but Spline does not seem to work exporting from 3dsMax to .abc. and spline does not seem to work changing the radius in both cases.
I'm trying to understand what happens by importing from 3dsmax to .abc
Regards
Paride

Hi Yugs,
note that my .abc file has been exported from c4d.
I have asked to Gabriele to send me an .abc file from Max, and I have to confirm that I’m not able to change the thickness parameter for this kind of alembic node.
The W coordinate issue has been introduced in 3.08, I guess.
If you import the .abc file in 3.06 or 3.07, the W coordinate shader should work correctly.
I’ll keep you informed.
ciao Beppe

Hi Yugs,
do you mind to share with us an example .orbx scene in this post or via PM, for better investigate the issue?
ciao Beppe

Hi again guys,

Here's a simple .orbx scene where the issue occurs. Its a simple 1x1 meter plane with the hair modifier transformed to splines then exported to .abc.

I'll try to revert back to 3.07 for this project (a simple rug ) in the meantime.

Thanks for helping.

Yugs

Hi yugs,
could you share your .max scene before exporting to .orbx too please?
which octane for 3dsMax version did you use?
Regards
Paride

Hi Paride,

I use 3ds Max 2018 Build 20.0.0.966. Here's the simple scene I uploaded to .orbx.
I have Octane for 3ds 3.06.4 - 4.41 Demo (I don't have a licence yet since I'm still learning 3ds), but I didn't use it to get the .orbx ; I exported to .abc using 3ds's export options, then imported to Standalone 3.08 and saved as package.

Cheers,

Yugs

Hi Yugs,
the developer said that the problem is that some of the vertices in the hair segments are duplicated, and they will try if they can handle this better in the next release.
ciao Beppe