Create a “Light-tastic” Logo Reveal Animation – Day 1
Tutorial Details
- Program: After Effects, Trapcode Particular
- Difficulty: Intermediate
- Run Time: 23:30 min
Final Product What You'll Be Creating
In this 2 part tutorial we get our hands dirty with a little expression math to create some beautifully organic light streaks that are used to reveal the AETUTS logo. In part 1 Lloyd breaks down the science behind creating a simple expression that drives the light streak emitter and shows you how easy it is to create infinite variations with ease.
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Requirements: Trapcode Particular (download the trial version here)
Instructions: Click ‘View Full-screen’ button (bottom right corner) to see this HD tutorial at maximum size. Click screen to pause, click again to play.
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Tutorial



Why do i keep getting ” After Effects Warning: is not an object
expression disabled
Error ocurred at line 4
Comp: “Comp 3″
Layer: 1 (”Emitter”)
Property: “Position
My Expression thingy is set to
x = Math.sin (Time * 10) * 10
y = Math.cos (Time * 10) * 10
z = Time * 10
[x,y,z] + value
javascript is case-sensitive so you need to make sure everything is capitalized correctly and in this case time should not be capitlized. You also need to add semi-colons ; at the end of each line:
x = Math.sin (time * 10) * 10;
y = Math.cos (time * 10) * 10;
z = time * 10;
[x,y,z] + value
Your expression should be:
x = Math.sin (Time * 10) * 10;
y = Math.cos (Time * 10) * 10;
z = Time * 10;
[x,y,z] + value
(simple matter of the ” ; ” )
hmm my trapcode particular isn’t emitting anything when i apply it. Basically i apply the effect change the type to light and nothing, still just the light operating on the script.
any ideas??
never mind i fixed it after toggling ridiculous amounts of ae options
Hey Lloyed ! i had a a problem before with AE using expressions , i fixed it somehow.
Just wanted to thank you properly!
Thank you very much for this !
Arthur.
Did buy and download, Trapcode Particular or does it come After Effects CS4?
Awesome TUT AE, brings back trig flashbacks
is ther any other way to do it without using a tripcode preset- i dont have it.
hey great tut,
although it seems that when i go for 32b color, when i set my logo to obscuration layer, particular doesn t really go around this. Its like the same thing to put an obscuration layer or not. Please help, I cant find anyway to solve the issue.
thanks
ok i got it. It was because of the light, makes the logo too bright…
AArrgh! Awesome tutorial (even with the siren special effects in the background
But my project is due today – I’m one hour down and now no sexiness?! where’s part 2?
*heavy sigh*
Lloyd, That was great. Thank you!
hey lloyd your tutorial seems to keep freezing in the middle of the Day one. Is there any problems on your end
I can’t seem to find the expression where you put the sin and cos in
Help?!
Interesting. Been trying to learn a new language for a while now so this is highly relevant! Thank you.