Liesbeth Levick
Liesbeth_Levick
About Me
Liesbeth Levick is a Character Effects Technical Director at Side Effects Software, focusing on Muscles and Tissues. She studied Astrophysics and then moved on to work in grooming and CFX at animation and visual effects studios in South Africa and Canada. Her production experience includes creating ... more
Liesbeth Levick is a Character Effects Technical Director at Side Effects Software, focusing on Muscles and Tissues. She studied Astrophysics and then moved on to work in grooming and CFX at animation and visual effects studios in South Africa and Canada. Her production experience includes creating tools and workflows for CFX in Houdini and helping transition studios to a Houdini-based CFX pipeline. Her familiarity with both artistic and technical roles drives her to build tools to make the lives of CFX artists easier. less
専門知識
Technical Director
Connect
LOCATION
Toronto,
Canada
ウェブサイト
Houdini Skills
ADVANCED
Hair & Fur | Muscles
Availability
I am currently employed at SideFX
My Badges
SideFX Staff
Since 6月 2024
My Tutorials
Recent Forum Posts
OTIS - Biceps simulation not following the bone rotation 2026年5月28日11:21
Can you submit a ticket to support with a file attached please?
how to load Otto Muscle and Tissue Simulation racipes 2026年5月26日9:14
Please contact support to help you fix your SHFS installation issue.
Tech anim work flow for hair sim 2026年5月19日13:34
We are aware that this is an issue and we are working on a solution.
In the mean time, here is a setup that you can use to sculpt (guide groom) guides on one frame and apply those edits to multiple frames. It doesn't have the advantages of the Shot Sculpt interface, so it's more of a hassle to set up for each frame that you want to sculpt on but it gives good results. It takes the differences (deltas) for the frame you sculpted on before and after the sculpt, and applies those differences to all the frames in the tangent space of the guides (so if your character rotates for instance, the deltas will still be applied properly). There is then a blendshape node which you can use to keyframe which frames you want the sculpt applied to.
Much like the Shot Sculpt node though, one of the main limitations is that if you have something very "explody" from a simulation, smoothing it out on the problem frame through sculpting is not going to apply well to other frames that have points in a very different shape. In that case it's better to apply some sort of procedural smoothing to all the problem guides for the relevant frames first. The simplest is probably to blend the problem guides to the guide deformed guides for the problem frames. Then sculpt and apply the tangent space deltas on top of that procedural fix.
In this file there is a "tangent_space_deltas_guides" subnet. It takes five inputs, but because subnets only allow four inputs, I had to add a spare input parameter. I recommend turning this subnet into an HDA with five inputs instead (make the spare input the fifth input). If you do that it's probably worth adding the blendshape node into the HDA too and promoting the blend parameter.
I hope that helps.
In the mean time, here is a setup that you can use to sculpt (guide groom) guides on one frame and apply those edits to multiple frames. It doesn't have the advantages of the Shot Sculpt interface, so it's more of a hassle to set up for each frame that you want to sculpt on but it gives good results. It takes the differences (deltas) for the frame you sculpted on before and after the sculpt, and applies those differences to all the frames in the tangent space of the guides (so if your character rotates for instance, the deltas will still be applied properly). There is then a blendshape node which you can use to keyframe which frames you want the sculpt applied to.
Much like the Shot Sculpt node though, one of the main limitations is that if you have something very "explody" from a simulation, smoothing it out on the problem frame through sculpting is not going to apply well to other frames that have points in a very different shape. In that case it's better to apply some sort of procedural smoothing to all the problem guides for the relevant frames first. The simplest is probably to blend the problem guides to the guide deformed guides for the problem frames. Then sculpt and apply the tangent space deltas on top of that procedural fix.
In this file there is a "tangent_space_deltas_guides" subnet. It takes five inputs, but because subnets only allow four inputs, I had to add a spare input parameter. I recommend turning this subnet into an HDA with five inputs instead (make the spare input the fifth input). If you do that it's probably worth adding the blendshape node into the HDA too and promoting the blend parameter.
I hope that helps.