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Recent Forum Posts

Packed Disk Sequence Questions Feb. 22, 2019, 4:12 a.m.

So im building my own code to handle subframes and the index. All is going well but seems the python code errors:

prim.setIntrinsicValue("filenames", files) // where files is a tuple of string filenames

returning this error:

return _hou.Prim_setIntrinsicValue(*args)
OperationFailed: The attempted operation failed.
Invalid number of elements for this intrinsic

Using setattrib in Vex is a workaround, but seems like this is a bug in python?

Packed Disk Sequence Questions Feb. 19, 2019, 11:41 a.m.

So how does PDS deal with subframe caches on disk?
Think of a bat that beats its wings about 17 times a second. I would want to cache the file in 1/8 frame increments. Can PDS deal with this? At the moment it only seems to want to pull in the $F file name, not any of the subframes saved using $FF in the file name.

Generate velocity from volume Nov. 6, 2017, 6:39 a.m.

You cant generate a vel from just the fog volume, it makes no sense. You will need the original particles with a v attrib already calculated then just add the v attribute on the VDB From Particles node, or use a volume velocity node to create the vel from your points.