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Open VDB files
Posted: Thu Apr 16, 2015 5:43 pm
by Steven Houtzager
Was wondering if Rhino with Maxwell can use OpenVDB files? I see that V3.1 of Maxwell now uses OpenVDB but not sure if Rhino can use it. Rhino nor Studio can import them.
Re: Open VDB files
Posted: Thu Apr 16, 2015 5:55 pm
by JDHill
OpenVDB files are not opened directly, they are used via the Maxwell Volumetric extension. This type is not yet supported in the Maxwell Volumetric UI in the plugin though (it will be in the next build), so at the moment, you would need to use Studio.
Re: Open VDB files
Posted: Tue Apr 21, 2015 2:23 pm
by Steven Houtzager
I see that now. I loaded up a VDB file from the site openvdb.org that was shaped like a rabbit. It did not affect the shape of the fog in Maxwell. :/.
Re: Open VDB files
Posted: Tue Apr 21, 2015 2:58 pm
by JDHill
Did you set the MaxwellVolumetric's Field Type to Volume File?
Re: Open VDB files
Posted: Tue Apr 21, 2015 10:51 pm
by Steven Houtzager
Well when I fill in these 2 parts, Studio will not render out to Fire or Maxwell. Are these the correct settings for a VDB file?
https://www.dropbox.com/s/nxg5pgw3bqgt1 ... 8.PNG?dl=0
Re: Open VDB files
Posted: Tue Apr 21, 2015 11:05 pm
by JDHill
That would be working fine for me here (I test with the bunny.vdb and bunny_cloud.vdb files, which I guess you have), so there must be more to the story. Please try starting a brand new MXS file, adding a MaxwellVolumetric object, setting the Field Type to Volume file based, and the File Name to bunny.vdb or bunny_cloud.vdb. This should work fine.
Re: Open VDB files
Posted: Wed Apr 22, 2015 3:31 pm
by Steven Houtzager
There it goes!! I was importing a volumetric via Rhino and then adding the VDB file.
Re: Open VDB files
Posted: Wed Apr 22, 2015 3:37 pm
by JDHill
You could just use the vdb file directly in Rhino, if you update to the build (
see here) I uploaded yesterday.
