A Good Feather Falling Effect?

[Michael Duff]

there is a tutorial or artical floating around, it may even be here on the cow, where you can use shatter to create a falling leaf. I played around with it and got a fairly good looking result.

Michael Duff –
Southern Cross Ten, Australia

[Mike Clasby]

Creating a falling leaf effect by Dan Ebberts:

https://www.aenhancers.com/viewtopic.php?t=8

is cool, but a little tricky, but it’s where I’d start.

[Erin Shelby]

most impressive. Dan Ebberts is blows me away.

[Mike Clasby]

Yep, I agree, blows me away like a feather.

[Erin Shelby]

hahaha, very punny

[Ryan Hill]

From Roland R. Kahlenberg’s article here:
https://www.creativecow.net/articles/kahlenberg_roland/expressions/index.html

The wiggle Expression requires three parameters to make it work. The first parameter tells AE how frequent you want it to kick in, the second affects the variation of the effect, and the third tells AE when in time you want it to work.

Though I’m not too clear on what that’s supposed to mean.

[Park Edwards]

Hi all —

I’ve got the expression code from the site listed above, but not sure how to get the leaf to stop falling. Any ideas?

https://www.aenhancers.com/viewtopic.php?t=8

[Jp Pelc]

Don’t know if you’re still looking for a solution, but if you or anyone else is I would contact Dan Ebberts directly, his contact info is on his website:

https://www.motionscript.com/

Of course if you find a solution be sure to post it here for any other people that come across this thread!!

[Jacob Roth]

If anybody still needs to have the feather stop, I figured it out with Dan’s help (meaning Dan figured it out).

You’ll need a null with a slider control that handles oscillation frequency and a checkbox control that starts and stops the fall.

Position:

yVelocity = 100; //pixels per second
oscFreq = thisComp.layer(“Null 1”)(“Effects”)(“Oscillation Frequency”)(“Slider”); //oscillations per second
oscDepth = 200; //oscillation depth (pixels)
drift = 25; // drift (wind?) (pixels per second: – = left, + = right)
chkBx = thisComp.layer(“Null 1”)(“Effects”)(“Fall”)(“Checkbox”);
n = 0;
if (chkBx.numKeys > 0){
n = chkBx.nearestKey(time).index;
if (chkBx.key(n).time > time) n–;
}
t = 0;
curTime = time;
if (n > 0){
for (i = n; i > 0; i–){
if (chkBx.key(i).value > 0){
t += (curTime – chkBx.key(i).time);
}
curTime = chkBx.key(i).time;
}
if ((curTime > 0) && (chkBx.key(1).value > 0)) t += curTime;
}else{
if (chkBx.value > 0) t = time;
}
value + [oscDepth*Math.sin(oscFreq*Math.PI*2*t) + drift*t,
yVelocity*t,0]

Y Rotation:

oscFreq = thisComp.layer(“Null 1”).effect(“Oscillation Frequency”)(“Slider”);
maxTilt = 15; //degrees
chkBx = thisComp.layer(“Null 1”)(“Effects”)(“Fall”)(“Checkbox”);
n = 0;

if (chkBx.numKeys > 0){
n = chkBx.nearestKey(time).index;
if (chkBx.key(n).time > time) n–;
}
t = 0;
curTime = time;
if (n > 0){
for (i = n; i > 0; i–){
if (chkBx.key(i).value > 0){
t += (curTime – chkBx.key(i).time);
}
curTime = chkBx.key(i).time;
}
if ((curTime > 0) && (chkBx.key(1).value > 0)) t += curTime;
}else{
if (chkBx.value > 0) t = time;
}

maxTilt*Math.cos(oscFreq*Math.PI*2*t)