Rotation with duration, holds for 1 sec. then repeats

[Dan Ebberts]

This should be close:

segDur = 1;
rampDur = 5*thisComp.frameDuration;
degrees = 36;
t = (time – inPoint)%segDur;
seg = Math.floor(time/segDur);
degrees*seg + linear(t,0,rampDur,0,degrees)

Dan

[John Osteen]

Dan, you are the man! Would’ve never figured that out on my own. Thank you.

One last question though, what would I change if I need another one to rotate every 10 seconds?

John Osteen
DastardlyStudios.com

[Dan Ebberts]

segDur = 10;

Dan

[Roland R. kahlenberg]

Hi Dan, the Expression script doesn’t seem to like layers not starting at time=0. Is there a way to fix this elegantly?

Cheers
RoRK

Intensive AE & Mocha Training in Singapore and Malaysia
Adobe ACE/ACI (version 7) & Imagineer Systems Inc Approved Mocha Trainer

[Dan Ebberts]

Good catch. This should fix it:

segDur = 1;
rampDur = 5*thisComp.frameDuration;
degrees = 36;
t = (time – inPoint)%segDur;
seg = Math.floor((time-inPoint)/segDur);
degrees*seg + linear(t,0,rampDur,0,degrees)

Dan

[Roland R. kahlenberg]

Thanks Dan!

RoRK

Intensive AE & Mocha Training in Singapore and Malaysia
Adobe ACE/ACI (version 7) & Imagineer Systems Inc Approved Mocha Trainer

[John Madison]

Hi Dan,

I was looking for a similar expression, however my set is slightly different. I was wondering if you can help!

I have the following set up with stroke-only circles and masks:

The black bit is just another circle.

I want to rotate the black circle every 5 frames but not a transitional rotation rather every 5 frames it rotates to its new position (increments of 40 degrees, i.e. overlapping the blue circles) holds for 5 frames and repeats.

How do i got about achieving this?

Thanks

[Dan Ebberts]

This should work:

f = timeToFrames(time-inPoint);
value + Math.floor(f/5)*40

Dan

[George Judd]

Hey Dan,

I am trying to achieve a similar effect. However, I need my null to rotate 1 degree every 3 frames and that is all.

I have been trying to tweak your expression, but my limited understanding of expression hasn’t got me very far!

If you had any recommendations on books or videos that would help me get a better grasp on expression I’d really appreciate it!

Many thanks!

George

[Dan Ebberts]

Try this:

f = timeToFrames(time-inPoint);
value + Math.floor(f/3)

Dan