Fun with Reaction-Diffusion in Houdini | Dan Wills | SIGGRAPH Asia 2019

Reaction-Diffusion is a fascinating type of simulation in which the the concentrations of multiple diffusing chemical species in a reaction is simulated spatially, for example on a pixel or voxel array. It also can be made to work on poly-meshes and poly-wires over edge-connectivity, or even just on points in space. The values representing the chemicals are then updated according to one of many different formulae that each have their own different kinds of dynamics. Dan's work has focused on a formula called 'Gray-Scott', which he extended in several ways and discovered some very interesting things. He also wrote an experimental formula based on a tweaked classical 2D 'Orbits' fractal step - which led to many interesting results!
In his day-job Dan Wills builds visual-effects pipelines and works on complex effects tasks for Rising Sun Pictures (RSP). He teaches groups of students to use Houdini as an instructor for RSP Education. In the time between caring for a young family, Dan is a fractal explorer, a reaction-diffusion experimenter, and an incessant Houdini workflow-tinkerer and improver.

[@Micropterus06]

Astounding, what a sickass deep dice

[@davejem7715]

great talk very inspiring

[@BenjaminRayner]

Sick yess!

[@claudebourbigot4042]

Great job

[@minratos6215]

fascinating subject but the presentation is just terrible.

[@DanWills]

I do totally agree.. for one thing I said 'um' far, farrr too much, but in my defense I had just had a wardrobe-malfunction immediately prior to this presentation that must have disabled my usual um-prevention! giant apologies I even want to make a version myself without all the um's!! Very embarasssing tbh! For another thing.. why the hell didn't I lead-with-the-videos!? I am still learning about how to present-well, clearly! Thanks for the feedback!

[@phinnaeusoconnor]

Great talk, but can you perhaps supply some scene files??

[@sonnyobrien]

make it yourSELF

[@Potatinized]

Fun means differently when you're not that clever.

[@DanWills]

I think it's more about patience than intelligence tbh!😊