-
Light Intensity based on composition’s width & height
Hi all,
I’m hoping someone could help me out. I’ve been trying to figure out how to write an expression for a Point Light to have “dynamic edge triggering” – similar to Optical Flares’ edge of frame light brightening but inverted. This is close to what I want to do but I’m not using a camera and I’m using a light instead of a layers (https://www.youtube.com/watch?v=I-Acdl_l9G0&t=15s).
What I’m trying to do is have a Point Light’s Intensity go from 0% once it hits the edge of the comp/stage edge to 100% Intensity at the center of the comp/stage. Ideally if the comp size changed, everything would still work the same without having to update the comp dimensions in the expression.
Thanks!
Some contents or functionalities here are not available due to your cookie preferences!This happens because the functionality/content marked as “Google Youtube” uses cookies that you choosed to keep disabled. In order to view this content or use this functionality, please enable cookies: click here to open your cookie preferences.
-
3 Replies
-
Something close to this maybe:
p = toComp([0,0,0]);
w = thisComp.width/2;
h = thisComp.height/2;
center = [w,h];
maxD = Math.sqrt(w*w + h*h);
d = length([p[0],p[1]],center);
easeIn(d,0,maxD,100,0) -
Awesome, thanks Dan this works exactly how I hoped. I appreciate the fast help!
-
Thanks for your solve, Dan!
Reply to this Discussion! Login or Sign Up