[Dan Smith]

try this ：https://aescripts.com/parental-controls/?srsltid=AfmBOoor8H9fbDm04lIYOrB4LyxLuW87UQfNMRL8_z6GuGhvy7jzn9w4

[Dan Smith]

Hi Dan,

I tried to create this expression for delayed movement and elasticity of points on a path, combining the elasticity expression with the one based on your reply. However, the result doesn’t seem ideal after running it. Could you help me identify what the issue might be? Thanks a lot!

By the way, the null layers follow each point on the path, one by one.

 

var numPoints = points().length;

var pts = [];

var delay = effect(“Slide Control”)(“Slider”);

var nullLayers = [];

for (var i = 0; i < numPoints; i++) {

var nl = thisComp.layer(i + 1);

nullLayers.push(nl ? nl.position : [[0, 0]]);

}

var amp = effect(“Elastic”)(1) / 200;

var freq = effect(“Elastic”)(2) / 30;

var decay = effect(“Elastic”)(3) / 10;

for (var i = 0; i < numPoints; i++) {

var safeTime = Math.max(time – i * framesToTime(delay), 0);

pts[i] = points(safeTime)[i];

}

if (numKeys > 0) {

var n = nearestKey(time).index;

if (key(n).time > time) {

n–;

}

if (n > 0) {

var t = time – key(n).time;

var baseVel = thisComp.frameDuration / 10;

for (var i = 0; i < numPoints; i++) {

try {

var v = nullLayers[i].velocityAtTime(key(n).time – baseVel) || [0, 0];

var deltaX = v[0] * amp * Math.sin(freq * t * 2 * Math.PI) / Math.exp(decay * t);

var deltaY = v[1] * amp * Math.sin(freq * t * 2 * Math.PI) / Math.exp(decay * t);

pts[i] = [pts[i][0] + deltaX, pts[i][1] + deltaY];

} catch (e) {

}

}

}

}

createPath(pts, [], [], false);

[Dan Smith]

Exactly,thanks a lot ,Dan.

[Dan Smith]

Hi Dan, thanks for your reply.

In fact, I applied this expression to the position property and then called the values from this global variable group in another shape layer’s path property to create a path. I’m trying to create an effect in AE that looks like real-time writing, but the problem is that it clears itself automatically. Haha, it’s amusing but also quite confusing.