[Dan Ebberts]

Which expression are you trying to use?

You probaly just need to use a layer space transform to get the world postion of your parented layer with the appropriate time delay.

Dan

[Dan Ebberts]

It sounds like you haven’t added a marker to the layer with the time remapping expression. That’s how the expression knows what time in your time-remapped layer to sync to the markers in the other layer. It might be that you just need to add a marker at time = 0 on your time-remapped layer if you just want the layer to start playing from time 0 whenever there’s a marker on the other layer. Make sense?

Dan

[Dan Ebberts]

It sounds like you haven’t added a marker to the layer with the time remapping expression. That’s how the expression knows what time in your time-remapped layer to sync to the markers in the other layer. It might be that you just need to add a marker at time = 0 on your time-remapped layer if you just want the layer to start playing from time 0 whenever there’s a marker on the other layer. Make sense?

Dan

[Dan Ebberts]

Try adding this expression to each solid’s scale property:

value*(100/thisComp.layer(“Null 1”).scale[0])

Dan

[Dan Ebberts]

Try adding this expression to each solid’s scale property:

value*(100/thisComp.layer(“Null 1”).scale[0])

Dan

[Dan Ebberts]

I think you’re looking for something like thsi:

w = wiggle(5,25) – value;
value + [w[0],-w[0]]

Dan

[Dan Ebberts]

>Finally decided to start exploring the power of java,

Actually, AE’s expression and scripting languages are based on JavaScript.

>Everything after the “;” are just notes correct?

Yes. Javascript considers everything on a line after “//” to be a comment.

>(freq*time*2*math.pi) is calculated first, then multiplied by Sin, then -1, /2

Actually, freq*time*2*math.pi becomes the argument to the Math.sin trig function. The range of that function is +1 to -1. So subtracting one makes the range 0 to -2. Then, dividing by two makes the range 0 to -1 (which is what the expression needs).

Dan

[Dan Ebberts]

>Finally decided to start exploring the power of java,

Actually, AE’s expression and scripting languages are based on JavaScript.

>Everything after the “;” are just notes correct?

Yes. Javascript considers everything on a line after “//” to be a comment.

>(freq*time*2*math.pi) is calculated first, then multiplied by Sin, then -1, /2

Actually, freq*time*2*math.pi becomes the argument to the Math.sin trig function. The range of that function is +1 to -1. So subtracting one makes the range 0 to -2. Then, dividing by two makes the range 0 to -1 (which is what the expression needs).

Dan

[Dan Ebberts]

You can probably do it with a decaying cosine wave expression for y rotation. Something like this:

period = 4; //length of one cycle
revolutions = 3; // revolutions per cycle
decay = 0.2;

revolutions*360*Math.cos(time*2*Math.PI/period)/Math.exp(decay*time)

Increase decay to have it slow down faster.

Dan

[Dan Ebberts]

You can probably do it with a decaying cosine wave expression for y rotation. Something like this:

period = 4; //length of one cycle
revolutions = 3; // revolutions per cycle
decay = 0.2;

revolutions*360*Math.cos(time*2*Math.PI/period)/Math.exp(decay*time)

Increase decay to have it slow down faster.

Dan