slider expression

[Riccardo Sinti]

right now I’m just keyframing the slider to subtract 250 over ten frames then hold for two seconds then again subtract 250 over ten frames then hold for two seconds.
I can put eases on the keyframes, what about in an expression.

Thanks (I’ll learn this stuff one day)

Thank You

[Dan Ebberts]

Something like this:

moveTime = 10; // frames
holdTime = 2.0; // seconds
amount = -250;

segDur = moveTime*thisComp.frameDuration + holdTime;
seg = Math.floor(time/segDur);
t = time%(segDur);
value + seg*amount + linear(t,0,moveTime*thisComp.frameDuration,0,amount)

Dan

[Riccardo Sinti]

Wow that works like a charm, thank you very much, but the code is very complex to me any chance you can expound on the different parts of it.
1 question why is “moveTime = 10; // frames” in frames but “holdTime = 2.0; // seconds” is seconds how are frames distinguished from seconds?

Thank You