Loop Wiggle expression only one axis

[Dan Ebberts]

Try this:

freq = 1;
amp = 110;
loopTime = 3;
t = time % loopTime;
wiggle1 = wiggle(freq, amp, 1, 0.5, t)[1];
wiggle2 = wiggle(freq, amp, 1, 0.5, t – loopTime)[1];
y = linear(t, 0, loopTime, wiggle1, wiggle2);
[value[0],y]

Dan

[John Paulek]

thank you very much thats work great for the y axis.
what i have to change that it also works for the x axis?

[Dan Ebberts]

Change this:

wiggle1 = wiggle(freq, amp, 1, 0.5, t)[1];
wiggle2 = wiggle(freq, amp, 1, 0.5, t – loopTime)[1];
y = linear(t, 0, loopTime, wiggle1, wiggle2);
[value[0],y]

to this:

wiggle1 = wiggle(freq, amp, 1, 0.5, t)[0];
wiggle2 = wiggle(freq, amp, 1, 0.5, t – loopTime)[0];
x = linear(t, 0, loopTime, wiggle1, wiggle2);
[x,value[1]]

Dan

[John Paulek]

Hey Dan,

thank you very much 🙂

[Johann Da Costa]

Hello, I tried Dan’s solution for wiggle only one axis (X) but it doesn’t work and I get this error message (attached screenshot). What did I do wrong?

screen.png 180 KB Image File - Click to view

• Copy Download Link

[Dan Ebberts]

I’m not sure why you ended up with a loopOut() expression, but if that’s really what you’re trying to do, it won’t work with a path. You can create your own pingpong version using valueAtTime() like this:

if (numKeys > 1 && time > key(numKeys).time){
  t1 = key(1).time;
  t2 = key(numKeys).time;
  span = t2 - t1;
  delta = time - t2;
  seg = Math.floor(delta/span);
  t = delta%span;
  valueAtTime((seg%2) ? (t1 + t) : (t2 - t));
}else
  value

[Johann Da Costa]

Sorry Dan, yesterday was a very stressful day so I didn’t take the time to explain well. Plus I am still a beginner in motion design and AE, hence it is also difficult for myself to understand all I am trying to do. Let me start again:

What I want is looping the animation that you can see on the attached video.

I tried to use your expression http://www.motionscript.com/design-guide/looping-wiggle.html, I applied it to “position” of the wiggle transform effect but I think I lost myself because it doesn’t loop and it wiggles on both X and Y axis.

I hope it is clear enough now? Thanks for your help.

screen-1.gif 629 KB Graphics Interchange Format - Click to view

• Copy Download Link

[Dan Ebberts]

I can’t think of any way to make the Wiggle Transform loop. You could apply this to the built-in shape specific Transform for Position to get a looping wiggle for x only:

freq = 1;
amp = 110;
loopTime = 3;
t = time % loopTime;
wiggle1 = wiggle(freq, amp, 1, 0.5, t);
wiggle2 = wiggle(freq, amp, 1, 0.5, t - loopTime);
w = linear(t, 0,  loopTime, wiggle1, wiggle2);
[w[0],value[1]]

[Johann Da Costa]

Thanks Dan but the solution you provided did loop the wiggle of the global shape but I couldn’t get the “dancing rectangles” anymore. I solved my issue with another solution that I have found on another Creative Cow topic:

– set wiggles per second to 0;
– expression for Temporal Phase:

wigglesPerSecond = 1.5;
loopTime = 3.5;
Math.cos(degreesToRadians(360*time/loopTime))*360*wigglesPerSecond + value;

– expression for Spatial Phase:

wigglesPerSecond = 1.5;
loopTime = 3.5;
Math.sin(degreesToRadians(360*time/loopTime))*360*wigglesPerSecond + value;