Reaction Diffusion Effect with Cinema 4D Scene Nodes

[@morotape]

Hello! Thank you so much for this fantastic and mindblowing tutorial🤯 , man, keep it up!

[@vladan.Poison]

Hi Dominik.. thank you for a very interesting tut.. I used my good old trick for blurry videos... GLASSES.. they did real-time sharpen filter (Better than Photoshop) 👓

[@MegaBexon]

nice approach, thanks for sharing.

[@traegami]

Hi Dominik, thank you for your fabulous tutorials,. I am using Arnold and have the simple system working however the advanced vesion only displays a moving point across the sphere but no diffusion? any ideas please.

[@realruckli]

Hi traegami, could be an refresh issue, try to check and uncheck the "Time-Dependent" Checkbox in the Attributs.

[@traegami]

thats it thsnk you @@realruckli

[@caimax3075]

thanks, great tutorial. Can you recommend some resource to learn C4D node system ？

[@realruckli]

I can recommend reading the documentation and than trail and error. Thats how I did it :)

[@joel_motion]

Can you explain more about what "closing the loop" does with the iterate collection/assemble collection?

[@realruckli]

Hi Joel, yes thats for many people a bit confusing and hard to understand. I try to explain this more in detail in my future tutorials! If you are familiar with programing you can understand this bit like a for loop. The iterate and assemble concept is also multithreded, so it can manipulate elements of a collection/array simultaniuos.

[@joel_motion]

Looking forward to future tuts!@@realruckli

[@AWalk-ud8gs]

Great tutorial! Thanks! Can you tell me how you did the voxel/pyro-like effect at 0:26 ?

[@realruckli]

I built the voxel grid with the Volume Voxel Distribution Node. And then I did pretty much the same. The finale reaction values are used to scale cubes with a Matrix Op on the voxel grid. I'll come up with a tutorial on how to easily use all node setups inside a Volume Builder and Mesher. With this solution you can do volume based infection systems and of course also bring the reaction diffusion effect in to the third dimension. so stay tuned :)

[@AWalk-ud8gs]

@@realruckli thanks! this is awesome

[@kymanh8865]

The Effect on hand looks much better than the one on sphere

[@realruckli]

The sphere was just for demonstration, the hand was made with the same tool ;)

[@KAKTAK-CG]

Nice work!

[@SupSupa10]

Nice but why in tutorial it does not look good like intro ?

[@realruckli]

Because in the tutorial, the mesh was simplified (Sphere and Plane) to have a fast feedback and a better understanding of the effect. The Animations in the Intro were made with the same tool ;)

[@ericliss9600]

Okay I'm not crazy. I went though the demo three times and didn't get any chemical diffusion with my build so I downloaded your project and it doesn't grow either. C4D must have updated since then. No idea why it's not working. Time dependent is checked. I tried enabling and refreshing but no luck. EDIT: I was on 2024.01 and updated to 0.2 and it's working 😉

[@realruckli]

Yes there is an update issue. Try to check and uncheck the Time dependent checkbox or unplug and replug the output connection. File works fine in my cinema. Wich version do you use? I use 2024.1.0

[@ericliss9600]

Any idea why the geometry disappears when I try to add a UI Group? I've tried refreshing but it seems to break.

[@realruckli]

@@ericliss9600 sometimes the parameters reset when changing the UI, this could cause the problem. You can send me your file via email (see YT channel description) then I can take a look.