- September 15, 2020 at 11:22 am
I’m following one of Andrew Kramer’s tutorials called <yt-formatted-string force-default-style=””>Advanced 3D Light Rays in After Effects! </yt-formatted-string>https://www.youtube.com/watch?v=frXQxwMKh6c
Interesting indeed. One thing I can not get my head around is how to make my light source rotate in place. My light source follow the null object x,y and z position since the radial blur center position has been pick whipped with the position of the null. But how can I make the light rotate in place. It’s a light house effect I’m after and the light should turn with the light source 360 degrees.
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- September 15, 2020 at 7:20 pm
you’ll have to create some distance between your radial blur center and the ball of light.
For example like this:
create a 3D null at the centre of the comp.
create a 2D super-white circle in the center of the comp.
make an adjustment layer with CC Radial Blur and give the centre this expression:
l=thisComp.layer("Null 1"); l.toComp([500,0]);
Now if you rotate the Null, the center of the Radial blur will not be from the anchorPoint of the Null, but from a point 500 pixels away: this point will appear to circle in 3D, shining the light to different directions.
Of course it’s just a 2D illusion, not actual 3D raytracing, so it is hard to get a sense of shining forward vs shining backward. The only way to do sell is by looking a bit from the top or the bottom, a,d/or animate the brightness of the shapelayer.
- September 16, 2020 at 9:16 am
Thank you Filip!
I will definitely try this out today and tell you how it goes!
- September 17, 2020 at 1:50 am
If you have Trapcode plugins from Red Giant, Lux does exactly this.
If you don’t, Nebula from Video Copilot also does this (and a whole bunch more), but it’s not out yet and no idea when it will be.
So, in the meantime, Filip’s suggestion is the way to go.
- September 17, 2020 at 5:46 am
Thanks Michael. I will also look into Trapcode’s Lux. Do you think the results would be any better than Filip’s suggestion?
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