Kai Stavginski


About Me

Kai Stavginski has been a Senior Technical Director for SideFX Software since 2014. In that time, he's mostly been busy in the areas of shading and fur tools. He started in the industry as a generalist in 2004, spent some time as a rigger for an animated feature and then created VFX for major Hollyw...  more


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Houdini Engine


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obj-image Masterclass
Houdini 16.5 Masterclass | Fur & Hair Grooming Toolset
obj-image Masterclass
New Shading Features | H16 Masterclass
obj-image Masterclass
Houdini 16 Masterclass | Custom Shading
obj-image Masterclass
Hair and Fur Masterclass

My Talks

obj-image Houdini HIVE
Shading in Houdini 16
obj-image Houdini HIVE
Fur in Houdini 16
obj-image Houdini HIVE
Hair and Fur Grooming in H17
obj-image Houdini HIVE
Houdini 20 Feather Preview

Recent Forum Posts

how to transfer muscle and bone anatomy 2024年5月24日4:50

I think they're mostly interchangeable in this case. But since at that step we care mostly about accuracy at the surface, surface deform does the job - and with less parameter tweaking. Interior deformation might be worse than Point Deform, but whether you use Point Deform or Surface Deform, they really just serve as the intitial input to delta mush and don't have a massive impact on the output.

You'll have to weigh the pros and cons, Point Deform might work better in some cases.

how to transfer muscle and bone anatomy 2024年5月22日9:01

Here's an idea for this.

You use topo transfer to match up the surface topologies.

Generate a tet mesh for the original character. Deform the tet mesh to the new character using Surface Deform. This preserves the surface of the tet mesh very accurately, but doesn't do a great mesh on the deep interior.

To solve this you can run delta mush on just the interior points. This should leave the surface untouched but smooth out the interior deformation.

The resulting tet meshes can be used to deform any muscles, for example via point deform.

See example file which transfers muscles to a Capy with different topo, pose & bigger belly.

Feather Motion Blur in Karma 2024年5月8日3:42

Here's an example with everything set up correctly.