[James Ireland]

Hi Dave and thanks.

I switched it off and it made no difference. However I just switched it back on again and now it’s all working!

Wood, trees, 11.45 GMT. Calling it a night!

Cheers,

J

[James Ireland]

Excellent, thanks again Dan.

Also can you recommend a decent book for an expressions beginner?

[James Ireland]

Excellent. Works a dream, thanks Dan.

[James Ireland]

Brilliant that’s great Dan. I did however need the scale expression to occur after the first scale in and I’m unsure how to join the 2 expression together.

So either with time in then time out or as a layer that scales in on layer start and out on layer end.

I need it to happen on several layers throughout the comp at different times. Basically objects bouncing in and around then out as other layers mask in from behind.

Again apologies for my complete lack or expression knowledge. I thought I would dip my toe into expressions on this project, it’s all very interesting, some amazing time savers out there. Paul Tuersley’s PSD to 3D is incredible!…and of course thanks for all your help so far.

J

[James Ireland]

Hello again. Another question if I may.

I’ve ended up using the following expression for scale bounce which as you can see starts the movement on the layer in point. How can I make this happen in reverse and with a time trigger? So going from a 100% scale object that ‘bounces’ to 0% at a set time (or layer end?)

Scale up on layer in…

k=100;
a=5;
b=25;
t = time – inPoint;
x=k*(1-Math.exp(-a*t)*Math.cos(b*t));
[x,x]

Scale up at set time…

timeToStart = 4;
if (time >= timeToStart){
t = time – timeToStart;
k=16;
a=5;
b=20;
x=k*(1-Math.exp(-a*t)*Math.cos(b*t));
[x,x]
}else{
[0,0]
}

Thanks in advance for the help…

[James Ireland]

Excellent thank you Dan.

I managed to find another of your expressions that triggers on layer start, very useful.