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Anchor point positioning
Hi all!
I am new on scripting so if you could help me I will appreciate it greatly.
I have this function: It places two scale keyframes I need. My question is, how can I change the anchor point to middle/left before the scale keyframe is applied? I tried all kind of ways but nothing has worked 🙁
function scaleUpLeft(){
var comp = app.project.activeItem;
if(comp === null){
alert(‘Please open a comp’)
return
};
var keyTime = comp.time;
var addTime = keyTime + 1.25;
var myLayer = comp.selectedLayers;
app.beginUndoGroup(“Scale up”);
for(var i = 0; i < myLayer.length; i++){
myLayer[i].property(“Transform”).property(“Scale”).setValueAtTime(keyTime,[0,100]);
myLayer[i].property(“Transform”).property(“Scale”).setValueAtTime(addTime,[100,100]);
};
};
app.endUndoGroup();
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6 Replies
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Something like this inside your loop, I think:
var r = myLayer[i].sourceRectAtTime(0,true);
var delta = [r.left, r.top + r.height/2];
var ap = myLayer[i].property("Anchor Point").value;
var pos = myLayer[i].property("Position").value;
myLayer[i].property("Anchor Point").setValue([ap[0] + delta[0], ap[1] + delta[1]]);
myLayer[i].property("Position").setValue([pos[0] + delta[0], pos[1] + delta[1]]);
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Something is telling me; you are a complete genius. That worked really well. Thank you very much.
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One more question, if I wanted the anchor point to be placed on top/middle would I just change the;
var delta = [r.left, r.top + r.height/2]; <<–?
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Yes:
var delta = [r.left + r.width/2, r.top];
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Oops, those are messed up. The first one should be:
var r = myLayer[i].sourceRectAtTime(0,true);
var ap = myLayer[i].property("Anchor Point").value;
var delta = [r.left - ap[0] , r.top + r.height/2 - ap[1]];
var pos = myLayer[i].property("Position").value;
myLayer[i].property("Anchor Point").setValue([ap[0] + delta[0], ap[1] + delta[1]]);
myLayer[i].property("Position").setValue([pos[0] + delta[0], pos[1] + delta[1]]);
and the second one should be:
var r = myLayer[i].sourceRectAtTime(0,true);
var ap = myLayer[i].property("Anchor Point").value;
var delta = [r.left + r.width/2 - ap[0] , r.top - ap[1]];
var pos = myLayer[i].property("Position").value;
myLayer[i].property("Anchor Point").setValue([ap[0] + delta[0], ap[1] + delta[1]]);
myLayer[i].property("Position").setValue([pos[0] + delta[0], pos[1] + delta[1]]);
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Works wonderfully! Thank you so much.
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