Consecutive Interpolation expressions

[Dan Ebberts]

You can only control one property with a single expression, but you could do what you’re suggesting with scale. For example, you could have an expressions that eases from 100% to 150% from 1 second to 2 seconds, and then eases from 150% to 80% from 2 seconds to 3 seconds like this

if (time < 2)
  s = ease(time,1,2,100,150)
else
  s = ease(time,2,3,150,80);
[s,s]

Instead of hard-coding the times into the expression, you could control them with sliders, markers, or keyframes. You’d need to pin it down more to get more specific…

[Paul Ducco]

Thanks so much (as always) Dan.

I must be on the right track, but not doing the right thing in my code…as that’s the approach I’d got to.
Will have another tinker and post the code back here if I fail again.

[Paul Ducco]

Failing Dan. Help appreciated.

This is resulting in the scale down occuring…then nothing, despite the arguments appearing to return as they would need to, to get scaler in the ‘else’ statement happening

clickPoint= thisLayer.marker.nearestKey(time).time;
keyLabel = thisLayer.marker.nearestKey(time).comment;
clickDur = 0.15;
t = time;
defaultscale = valueAtTime(0)[0].toFixed();
clickScale = (effect("Click Scale (%)")("Slider")/100).toFixed(1)
clickBase = defaultscale*clickScale;

if (valueAtTime(time)!=clickBase) {
scaler = easeIn(t, clickPoint-clickDur, clickPoint, defaultscale, clickBase);
} else {
scaler = easeOut(t, clickPoint, clickPoint+clickDur, clickBase, defaultscale);
}
[scaler,scaler]

[Dan Ebberts]

I haven’t figured out exactly what it’s doing, but it seems that you would want to replace this:

if (valueAtTime(time)!=clickBase) {

with this:

if (time < clickPoint) {

[Paul Ducco]

Haha. That’s concerning (for me!)
I was attempting to say if the value (scale) of the layer was at the appropriate reduced amount (calculated with a value set by a slider), then animate.

And as expected, your approach works beautifully and makes much more sense.

Thankyou!

Here’s where I got to if you’re interested in working out the madness…:)

clickPoint= thisLayer.marker.nearestKey(time).time;
keyLabel = thisLayer.marker.nearestKey(time).comment;
clickDur = 0.075;
t = time;
defaultscale = value[0];
clickScale = (effect("Click Scale (%)")("Slider")/100)
clickBase = defaultscale*clickScale;
if (time < clickPoint) {
scaler = ease(t, clickPoint-clickDur, clickPoint, defaultscale, clickBase);
}
if (time >=  clickPoint) {
	scaler = linear(t, clickPoint, clickPoint+clickDur, clickBase, defaultscale);
}
[scaler,scaler]