Hello
After testing SideFX__flamethrower, SideFX__pyrotorch, SideFX__volumes
i'm thinking how to bring it to c4d

• 1. Arnold/C4DtoA native procedural volumes - making py-helper to read vdb-files after baking to volume formats.
  2. 3dparty procedurals like partio or navie effex cacher
  
  What do you thinking?

Hi Ilay,
I have tested volume renders in Arnold (C4D) and they work.
The way to do it is create the asset to save a VDB cache and use a convert VDB SOP in Polygons mode to create a rough preview in C4D and make sure it doesn't render.
Then just point Arnold Volume object to the cache.

I have prepared a C4D scene with Arnold, and a digital asset.
Feel free to dissect the asset in Houdini and ask me any questions.
Make sure:
1. Change the Asset: “VDB Save Path” parameter to a valid one. Use "_$F3.vdb" so that it writes the correct frame number.
2. Point the Arnold VDB to the saved VDB path
3. Play the animation to make sure vdb files are written.
4. render in Arnold :-)

Please tell me if it works.

Hello
Thank you
It works!

try using a mograph cloner as an input and add some animation as well :-)

I will. Thank you

If you're looking for something a bit more advanced for the preview, you could use this tool that I discovered yesterday:

https://vimeo.com/108536087 [vimeo.com]

that looks very cool!

Fancy seeing some of your familiar faces here!



I am doing some VDB work in Houdini and transferring it to C4D.

Everything works with Arnold with no problems, although the volume bounding box preview is a bit flaky…

However, I have one question which I cannot seem to find an answer to.

Do the visualizations inside Houdini, that end up getting transferred to C4D
via the VDB file GET CHANGED BY THE REMAPPING SETTINGS in Houdini?

Or, as I suspect, does it just change how it is visualized within Houdini, and the actual data (Temperature, Heat, Density, etc.) still have the same values
no matter what settings I adjust in the Visualize tabs in Houdini?

If that is the case, how might I make a custom field that can be passed to the
VDB that has nothing to do with the volume simulation, but rather will be used within C4D when rendering with Arnold?

Does that all make sense?

Thanks for any help you can supply.

Perry

Perry Harovas
Do the visualizations inside Houdini, that end up getting transferred to C4D via the VDB file GET CHANGED BY THE REMAPPING SETTINGS in Houdini?

Or, as I suspect, does it just change how it is visualized within Houdini, and the actual data (Temperature, Heat, Density, etc.) still have the same values
no matter what settings I adjust in the Visualize tabs in Houdini?

If that is the case, how might I make a custom field that can be passed to the
VDB that has nothing to do with the volume simulation, but rather will be used within C4D when rendering with Arnold?

Hi Perry, nice to see you here.
I guess this is a Houdini Specific question, unrelated to the C4D plugin and you have more chances getting it answered on the main forum.

Having said that, I will attempt to offer some insight:
Regardless of the way you chose to visualize your data (changing the REMAPPING SETTINGS), if the actual numbers - data doesn't change, then what you see is only “cosmetic” inside the Houdini viewport, not substantial.

Thank you, Thanassis, that is what I suspected, just wanted to confirm.

BTW: I hope Greece was relaxing and that you had great time with your family.