Spirographs in After Effects had it's 15-minutes of fame several years ago and lost in the mists of time around here anyway, except for tutorial/project posts from Chris Zwar, Ayato, and Michele Yamazaki. Satya Meka showed similar results more recently (he likes the Radio Waves filter) in Create an Ethereal Morphing Letter Canvas and Create an Elegant Concentric Rings Animation.Now there's another from Christopher Kirkman on AETuts, Generate Your Own Splendid Spirographical Designs, which uses expressions and slider controls.
Update: commenter Jason Lee Peacock posted modified code of Dan Ebberts and Sine Sphere by Quba Michalski, which recalls past things done by Brian Maffitt with CC Sphere or now with CFX Sphere Utilities.
4 comments:
I've recently been looking into this topic myself, but within a 3D space (thanks to the modified code of Dan Ebberts) http://twitpic.com/1ao7d0 , having seen this via Quba Michalski http://qubahq.com/2005/08/sine-sphere/
Plese tell more on the modified code of Dan Ebberts...
http://twitpic.com/1bscaz .. Literally clueless to the math ( http://tinyurl.com/yeg37lt ) I just kept tweaking Dan's code until I got the result I was after..
r = 200; //radius of sphere
Theta = Math.PI*time*5*Math.sin(10)/2;
Phi = Math.PI*time*1/2;
theta = ease(time,Theta,Theta);
phi = ease(time,Phi,Phi);
sinPhi = Math.sin(phi);
x = r*Math.cos(theta)*sinPhi;
y = r*Math.sin(theta)*sinPhi;
z = r*Math.cos(phi);
center = thisComp.layer("Null: Center").position;
center + [x,y,z]
Brilliant Jason! This is exactly what I was looking to add to my tut. I worked with Dan a little bit, but couldn't come up with a good way to do this in 3D space cuz I'm just as lost on the math as most.
Thanks!
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