I wrote an article for the game-and-vfx website 80 Level a while back, and it’s gone live. The topic is Hooke’s law as implemented in Popcorn FX (and Unity’s VFX graph.) It’s brief but has been well received, I appreciate the feedback I’ve gotten. A second article for 80.lv centered around Newton’s universal gravitation as implemented in PopcornFX (and Houdini this time) is in the works.
https://www.unrealengine.com/marketplace/en-US/product/vector-field-collection The collection of 109 vector fields I placed on Unreal Marketplace for Cascade and Niagara is now live and response has been really gratifying, thank you! If you’re using this pack, please send me links to what you’ve made, I can’t wait to see what people are doing with them!
While working on a release of 100+ vector fields for the Unreal community marketplace I built a few handy tools to generate vector fields from curves, surfaces etc, and to blend them with constants, noise, various forces, other vector fields and so on.
For example, here is a vector field using a spherical surface and a “pull” force to create a forcefield effect:
While this vector field uses a series of curves mixed with flow noise for a “jet exhaust” effect:
In Unreal a single cascade emitter can use these vector fields and GPU sprites to create a very broad range of looks:
So to celebrate and promote the upcoming release on the Unreal marketplace I’ve generated 10 free vector fields in .fga format for download here. Enjoy!