Jeff Wagner


About Me

VFX Artist


My Talks

obj-image ILLUME Webinar
FLIP Fluids | Part 1
obj-image ILLUME Webinar
FLIP Fluids | Part 2
obj-image ILLUME Webinar
Pyro FX | Tips and Tricks
obj-image ILLUME Webinar
Houdini VOPs
obj-image ILLUME Webinar
Geometry Workflows in H16
obj-image ILLUME Webinar
Learning Houdini

Recent Forum Posts

Parallelism with VEX Wrangles July 4, 2018, 4:54 p.m.

How many primitives?
If it's less than 1000 primitives, it may run in only one thread…

Animating Voroni Fracture Points and Fixing the Resulting Geo May 17, 2018, 7 p.m.

Fun exercise trying to build surfaces lazily with a one SOP solution.

Bjorn is correct in that you should be throwing a Ray SOP in there before you extrude.

Here is a few different tries of surfacing the curve faces with varying degrees of success. I thought the new PolyFill SOP with Quadrilateral Grid option would do it but I had to point jitter to try to fix some shapes and still. Meh…

In the end Remesh SOP with adaptivity enabled did a very nice artifact render free job.

Tiled shape VOPS? May 17, 2018, 3:16 p.m.

The Tiled Hexagon VOP is one of a few of the old original VOP patterns from way back written in vex.

The Tiled Hexagons VOP returns an integer id value and vector hexuv variable that has an s and t value that varies across the hexagon face in u and v directions.

These older pattern type VOPs don't give you higher order features like edge width, shading across face, etc that you may expect. But you can build up these features with additional VOPs. These are the raw patterns exposed.

Have a look at the attached scene file for the Hexagon Tiles VOP and the Rounded Hexagons VOP. Both are kinda lacking and not exactly what you want. But they do cool things though.

I forgot about the Rounded Hexagons VOP and it's hexagonish or “hexness” parameter that goes from circles to four leaf flowers and hexagons are somewhere around 0.5 .