Hello everyone, I saw this curve fade animation demo in KS 2023 new features. I try a lots of way, but still can’t do this. Can anyone show how to do this cool animation?
KS 2023 Curve Fade animation question
This button animation.
I didn’t play with it a lot but if I should guess for the button anim…
You create one emissive led (or other physical light) and apply the curve for the color and animation. Afterwards you make a circular pattern with that object so you get an circular array of all leds.
Than you just need to go in the animation timeline and move every led x-amount of frames so you get a fluid motion. Not sure if that’s how they create it but I think it looks more complicated than it is 
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Quick try but it’s not really working well compared to example
[edit]
I do think this can work this way but I now moved the entire animation while I should move the intensity separate from the curve animation I think.
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Quick question. Where is this video from? And are you certain it’s done 100% in KeyShot?
Hi Will,
I shuffled the ‘color fade’ a bit in animation and got now this (seems one led is broken)… so I think it’s doable.
BTW, this is the 2023.3 beta and I noticed the animation timeline is a bit annoying since sometimes ‘color fade’ is at the top and sometimes ‘curve fade’ which makes it extremely easy to make mistakes 
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That’s cool! Lots of work! I’m curious where the original video is from that @hank.lee shared. I’m thinking this was done with another approach, but before chasing solutions, I want to know if Hank is certain this the example of the glowing light animation was created in KeyShot.
Yeah it’s quite a lot of work but mainly repetitive work (boring). But it was nice to try it and see how far I could get. I played a bit more and if you actually make the spheres invisible to the camera it looks better. Just have to play with the materials to get it smooth/nice looking.
Looking at the example it could also be a KeyShot render but POST for the glow. I’m not very good in video editors but I can imagine once you know how to mask you can just rotate some color in place and than change the hue values.
Anyway, hope Hank will enlighten us.
[edit]
Another option could be just create a bit of video and use the video as texture. Way easier than what I did I think.
And another thought, make a animation where you actually add more circles in a radial array using a 3d program, export to alembic and use that animation.
Hi,
I would try to explore a black to white gradient (or full white texture maybe enough) with the circular shape, then a curve animation for increasing the brightness. Start from full black to full white and color it with a color gradient node using the black/white as mapping. black will be colored by first color, white by the last, and you can apply differents colors to color grey values.
Not sure if it seams clear but I can’t make the try right now.
EDIT: I tried something, and easiest I did was unwrap the circular element directly inside KS (easy as it’s a simple circular shape). Then a white square stretched on V to fill the element. To make the rotation, I used a curve animation linked to the ‘shift V’ of the white square (start from minus half of the V size, end at other half value). A color composite to make the masking of a color fade animation to animate the source color.
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Using the UVs is clever! I didn’t think about that.
@oscar.rottink yes, you touched on a couple of the solutions I thought of. However, I wanted to verify that the light animation was done in KS since I suspected it was done in post. But looking at the noise patterns, I’m not so sure that is the case.
Nice!! Smart one! Gonna try it as well, might be useful for other things as well!
Hi
I had in mind to acheive it without using UV but gradient like my first thought.
I made a gradient from black to white that follow the shape, to use it as a map for the color gradient.
Color gradient is black to white, 0.01 scale (the scale will make the front fading easily editable).
The curve animation is linked to the shift input to move the color gradient position along the texture gradient.
Then, same as UV, color fading to control color.
I’m not sure why but the speed isn’t linear along the gradient texture, maybe something with brightness/gamma or my gradient on illustrator wasn’t clean.
I think it could be a good way to acheive the animation whithout external part, like subsurface illumination by using that as a label on a flat surface. It allows more shapes too as you can make the path you want on illustrator. At least if you handle the position on the gradient texture to have linear movement.
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I did this much simplier with a few nodes. The breakdown (covered this topic) was shown in our What’s new Webinar ( https://attendee.gotowebinar.com/register/6688389035141086807 ) at around min 24. (but in German!)
embedded curve fade ani - ring.bip.pptx (185.4 KB)
As a download you’ll get an empty PowerPoint slide with a bip embedded. Just activate this object to open the scene in KeyShot 2023 or extract this file with e.g. 7-Zip.
Hope that helps
CheerEO
Marco
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Nice! Lot less complicated than my attempts.
Hi Will,
This Video is from KeyShot, they provided me with an example video of the new features in 2023.
Hi Oscar,
Thanks for your sharing!! It’s amazing!! I think I need to try it again:laughing:
LOL well, better try the way Pierre and Marco did it, saves a lot of time.
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Hi Pierre,
Thanks for your information, it inspire me a lot!!! Really helpful!!!
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