Hey,

I want to export a geometry from Houdini to Maya, with an Alembic file.
In my Houdini geometry, I have groups with differents names. My goal is to have these same groups with the geometry it contains, and I want to keep the same name for each group.

In my Rop Alembic Output SOP I have these settings :
- Format : HDF5
- Build Hierarchy From Attributes check on
- Path Attribute : name
- Packed Alembic Priority : Hierarchy

But when I'm in Maya all my names are deleted, I just have the classic ‘polysurface*’, and I have no group… How can I keep the same hierarchy from Houdini in Maya ?

Also, when I'm exporting a sequence, I have no animation…

Thanks,

Tom.

And there is also a ‘Name’ SOP before my Alembic export node.

@Lewul
I have a question.
How I can export animation from Houdini to Maya with alembic?
I read documentation that we need to use Alembic node to export data from Houdini, but I don't know how to do that, any help please?

Thank you!

Bojan Brankovic
@Lewul
I have a question.
How I can export animation from Houdini to Maya with alembic?
I read documentation that we need to use Alembic node to export data from Houdini, but I don't know how to do that, any help please?

Thank you!

drop down an ROP Alembic Output and obviously unlike a normal Rop output you don't want $F infront of your filename, as its a single file for the animation.

Plugin your geo to the rop and click render.

Take that output alembic and just import in maya.

Cheers!

Lewul
Hey,

I want to export a geometry from Houdini to Maya, with an Alembic file.
In my Houdini geometry, I have groups with differents names. My goal is to have these same groups with the geometry it contains, and I want to keep the same name for each group.

In my Rop Alembic Output SOP I have these settings :
- Format : HDF5
- Build Hierarchy From Attributes check on
- Path Attribute : name
- Packed Alembic Priority : Hierarchy

But when I'm in Maya all my names are deleted, I just have the classic ‘polysurface*’, and I have no group… How can I keep the same hierarchy from Houdini in Maya ?

Also, when I'm exporting a sequence, I have no animation…

Thanks,

Tom.

Hey Tom,

Have you tried using the Alembic scene output in the /output context? In there it should preserve your hierarchy. For instance if you put int /obj under root it should carry over into the alembic.

I'm assuming you're using the geometry –> ROP Alembic Output

@Sugleris

Thank you very much, but I tried something here is the picture:



So, I add in “OUT” section from TOOLS dropdown menu, and from submenu Scene ->Alembic

I connect FETCH_EXPORT_OCEAN which was there with ocean problably I exported it and I have some file but Maya won't read it. I don't understand what step I did wrong…?!

Thank you again!

Sugleris : Thanks ! It's working. I was expecting that groups from Houdini would become groups in Maya, but it became shapes (which is okay too).

Bojan : don't plug anything in the Alembic node, just get the object path you want in the SOP Path parameter of your Alembic node, if I remember correctly.

@Lewul

Man, I don't understand nothing! It doesn't work.
I am beginner to Houdini and I don't know how to solve this problem.
I don't know what to enter in SOP Path, I never used it.

Here is the screenshot (I didn't plug alembic node)

:?



Thank you for any efforts to help me!

Write ‘.abc’ after your ‘$JOB/Desktop/BBBBB/alembic’, and in your SOP Path pick the end of your tree inside of your ‘ocean_surface" (put a null at the end of your tree, and call it ’OUT_OCEAN_SURFACE' for exemple so it will be easy to find).

@Lewul

Merci beaucoup!

I succeed in exporting alembic files, but when it looks flat and with no animation when i imported it in Maya )

Houdini alemic export parameters:


Maya imported alembic file:


Probably I did something wrong, since I don't have any animation in Maya!

Mais en tout cas, merci tu m'as aidé!

Hehe avec plaisir

I can share you a scene file if you want to.

It will means a lot to me, if you can please share similar scene…I am learning.

Merci d'avance!

Tout meilleur!

Here it is ! Tell me if it works.

By the way, “Tout meilleur” doesn't mean anything haha ! Nice try

T'es gentil ma pote!

Je vais essayer et jvais te dirai!

Amicalement!

@Lewul

I tried to make new scene with some adjustment like from your example, which was worked perfectly, but I missed something again.

I added ROP network and in it I create Alembic output (in OBJ section), I added DOP network, because I read that it is related on somewhat with simulations topics, but I am not sure. But, when I clicked render, I got warning and my alembic node become red.

@Lewul

Hi, I have a similar doubt.
I have a car wheel rolling on a plane. The wheels pivot axis is not exactly in the origin.I use pivot coordinates to make it spin exactly on the wheels axis.Then I apply animation with rotation and translation. When I convert to alembic file, this transformation into world space is not included in the alembic file.

What should I do to include this world transformation in Alembic ROP node or alembic node?