Sean Lewkiw


About Me

CG Supervisor

Sean brings over 20 years of Visual Effects production experience as an artist, manager, and supervisor. He has an impressive list of credits on films such as Lord of the Rings, X-Men, The Golden Compass, Cloud Atlas, and Transformers to name a few. Sean brings a strong knowledge of Houdini, having used it since Inception in 1999, and has worked closely with SideFX over the years as a consultant and guest speaker. He is currently Lead Houdini Instructor at Lost Boys School of VFX in Montreal, and works as a Content Creator for SideFX.


My Talks

obj-image Worldwide HUG
Ocean Tools Quickstart

My Tutorials

obj-image Beginner
Solaris Lighting
obj-image Beginner
Intro to Material Based Destruction
obj-image Intermediate
Material Based Destruction
obj-image Beginner
Solaris: Working with USD
obj-image Quickstart
Material Based Destruction and Constraints

Recent Forum Posts

How to refresh Dop network automatically? Jan. 13, 2021, 9:07 a.m.

You can also set a hotkey to reset active sim: Open the hotkey editor and search for "reset" and map this to a key.

How to randomize normal faces of bricks, and bulge them out? Jan. 11, 2021, 12:49 p.m.

And here is another approach using foreach loops with ramdomized extrudes and then some group expands to peak out the points and smooth them afterwards. Obviously, you'd want to add controls for amount of randomness and peaking.

Import image w/Transparent Background Dec. 14, 2020, 11:52 a.m.

Take a look at the attribfrommap SOP. In it you can specify a channel as the texture channel. I tried an exr and it worked fine, (using "A" for alpha in the "Texture Channel" field), I assume it will work on a png. You can either take this node apart and see how it works, or simply take one for RGB and one for Alpha and mult the point colors together and then use that as a scatter.