[Dan Ebberts]

Depends on what you’re doing. A lot of times you can convert the expression to a equation based on time. Sometimes you have to have your expression “recreate” the past by walking through the comp frame by frame. The are other, more obscure techniques that can be helpful in rare situations.

If all you want to do is increment a value on each frame you could do it like this:

myVar = 10; //starting value
f = Math.round(time/thisComp.frameDuration); //frame number
myVar += f;

Dan

[Dan Ebberts]

Sure, that would be helpful. Especially if it’s not the latest version.

Dan

[Dan Ebberts]

Sure, that would be helpful. Especially if it’s not the latest version.

Dan

[Dan Ebberts]

Something like this maybe:

holdTime = 2;

minFade = .1;
maxFade = .5

fade = Math.min(Math.max(minFade,holdTime*.1),maxFade);

linear(time,holdTime,holdTime + fade,100,0);

Dan

[Dan Ebberts]

Something like this maybe:

holdTime = 2;

minFade = .1;
maxFade = .5

fade = Math.min(Math.max(minFade,holdTime*.1),maxFade);

linear(time,holdTime,holdTime + fade,100,0);

Dan

[Dan Ebberts]

It depends on which version of AE you’re running. You can’t access the comment in the newer versions but you used to be able to with marker.value. Hopefully this very useful feature will be restored in a future version.

Dan

[Dan Ebberts]

It depends on which version of AE you’re running. You can’t access the comment in the newer versions but you used to be able to with marker.value. Hopefully this very useful feature will be restored in a future version.

Dan

[Dan Ebberts]

This should do it:

max_dev=20; // max deviation in pixels
spd=35; //speed of oscillation
decay=10; //how fast it slows down
t = time – in_point;
s = max_dev*Math.sin(spd*(t))/Math.exp(decay*t);
value + [s,s]

Dan

[Dan Ebberts]

This should do it:

max_dev=20; // max deviation in pixels
spd=35; //speed of oscillation
decay=10; //how fast it slows down
t = time – in_point;
s = max_dev*Math.sin(spd*(t))/Math.exp(decay*t);
value + [s,s]

Dan

[Dan Ebberts]

You need to use the Layer Space Transforms.

It would look like this:

C = thisComp.layer(“child”);
childPosition = C.toWorld(C.anchorPoint);

There’s also a transform to move the child’s position into comp (view) space that’s the same as above except you use “toComp()”.

Dan