[Meng Zhang]

Just in case someone may need it. I found a work around by changing the long drop down list to cascading drop down list and somehow it fixed the issue.

[Meng Zhang]

Dan,

Just let you know it works like a charm. Thank you for providing awesome solutions all the time.

Cheers,
Meng

[Meng Zhang]

Dan,

That’s very smart solution. Thank you for quick response!

I will test it out and post the result here.

[Meng Zhang]

How to get same function for Comp? For example, if I just pre-composed a AVLayer and I want to get the newComp raterized automatically. Is there a way to do it?

Thank you!

var newComp = activeItem.layers.precompose([curLayer.index], curLayer.name, false);

newComp.(?)


[Meng Zhang]

Hey Dan,

It is a script. My fault not making this clear. I didn’t see it is under expression discussion. Thank you again for help!

[Meng Zhang]

Dan, thank you for your quick response. I agree with you, although I didn’t find a perfect solution, I managed to find out a way to detect if the position is within a mask using this attached code by M. Katz based on Nirg’s approach:

By changing the polygon to to a layer mask, I successfully got a right result. And it is all I need for now. I just need to detect the position key frames outside the mask and delete them. I’m planning looping through the key frames and delete those that are out of range.

I hope to take the chance to thank you for all your awesome answers in this forum. I have always been learning a lot from you. Thank you.

function pointIsInPoly(p, polygon) {
var isInside = false;
var minX = polygon[0].x, maxX = polygon[0].x;
var minY = polygon[0].y, maxY = polygon[0].y;
for (var n = 1; n < polygon.length; n++) {
var q = polygon[n];
minX = Math.min(q.x, minX);
maxX = Math.max(q.x, maxX);
minY = Math.min(q.y, minY);
maxY = Math.max(q.y, maxY);
}

if (p.x < minX || p.x > maxX || p.y < minY || p.y > maxY) {
return false;
}

var i = 0, j = polygon.length - 1;
for (i, j; i < polygon.length; j = i++) {
if ( (polygon[i].y > p.y) != (polygon[j].y > p.y) &&
p.x < (polygon[j].x - polygon[i].x) * (p.y - polygon[i].y) / (polygon[j].y - polygon[i].y) + polygon[i].x ) {
isInside = !isInside;
}
}

return isInside;
}

[Meng Zhang]

That’s awesome. Does anyone know how can I limit the position within a polygon, like a mask or shape layer? I have been searching for this, but no luck. Thanks guys!

[Meng Zhang]

Hi Casey,
I got exactly the same error! That was really frustrating…Did you find out how to solve this?

Thanks!

Meng