5 Replies Latest reply on Jul 21, 2008 8:30 AM by David Wigforss-Hv1BNN

# Do you find yourself making a layer 3D and moving in Z 'cause you can't Scale linearly?

I do. And it drives me nuts- do you have any solutions? Scaling things to simulate moving forward and backward in Z space is the obvious thing to do to keep your comps simple and away from 3D space. However, when you scale things very small or large, they start speeding up in a way that doesn't seem natural, doesn't seem linear. So I have to turn that one layer into a 3D layer so that I'm actually moving it in Z to get the speed/easing right.

Can someone point to an article or tutorial explaining a workaround for this that doesn't involve going 3D?

Thanks!!!!!! Rock On After Effects forum users!!!!!
• ###### 1. Re: Do you find yourself making a layer 3D and moving in Z 'cause you can't Scale linearly?
Try selecting your scale property and choosing Animation->Keyframe Assistant->Exponential Scale.

Alternatively, you can use an expression such as:

> exponent = 10;
s = value/100;
[Math.pow(s[0], exponent), Math.pow(s[1], exponent)]*100

• ###### 2. Re: Do you find yourself making a layer 3D and moving in Z 'cause you can't Scale linearly?
You rock all that is not tethered to the ground, Aaron Cobb! May your brightness never be diminished. Many, many thanks.
• ###### 3. Re: Do you find yourself making a layer 3D and moving in Z 'cause you can't Scale linearly?
I'll have to try that expression out.. I also usually switched my layers to 3d to get nice 'scaling' via pos.z.

I hate using keyframes and expressions on the same parameter, so I'll create a slider control and replace 'value' with that.

Thanks Aaron. (I'll have to try it before stating 'you're legend precedes you like thunder precedes lightning'). :P

(IMHO Those Dos Equis ads are the best campaign on radio/tv now.)
• ###### 4. Re: Do you find yourself making a layer 3D and moving in Z 'cause you can't Scale linearly?
i I hate using keyframes and expressions on the same parameter

Out of curiosity, why? I prefer the compactness of being able to do everything on one property where practical, myself.
• ###### 5. Re: Do you find yourself making a layer 3D and moving in Z 'cause you can't Scale linearly?
Seeing the original values without unchecking the expression...