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Center Position of Text Layer for MOGRT
Have been trying a few expressions that I’ve found online, but I can’t get one that works.
I have a text box that dictates the size & position of the white cut out background it’s on with sourceRectAtTime expression, but now I want the text box to always be centred on screen.
What expression can I use, the text layer’s anchor point isn’t centred maybe that’s why it keeps shifting everything way over?
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7 Replies
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I’m guessing you just want to center the x direction, which you could do like this:
r = sourceRectAtTime(time,false);
myCenterX = anchorPoint[0] + r.left + r.width/2;
compCenterX = fromComp([thisComp.width,thisComp.height]/2)[0];
value + [compCenterX – myCenterX,0]If you want to center x and y, it would be like this:
r = sourceRectAtTime(time,false);
myCenterX = anchorPoint[0] + r.left + r.width/2;
myCenterY = anchorPoint[1] + r.top + r.height/2;
compCenter = fromComp([thisComp.width,thisComp.height]/2);
value + compCenter – [myCenterX,myCenterY]Dan
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that worked, thanks!!!
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Dan’s method is indeed nice one!
On the other hand, specifically for text boxes most often you will want anchor point to be in a fixed place all the time. Consider adding similar sourceRectAtTime approach, just with a simplified array.
R = thisLayer.sourceRectAtTime(time);
T = R.top;
L = R.left;
W = R.width;
H = R.height;
[L+W/2, T+H/2]Find out more:
After Effects Tutorials: motion design, expressions, scripting. -
How do you center it on just the Y axis? I tried changing your X version to Y’s and 1’s instead of 0’s, but that didn’t work.
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Try this:
r = sourceRectAtTime(time,false);
myCenterY = anchorPoint[1] + r.top + r.height/2;
compCenterY = fromComp([thisComp.width,thisComp.height]/2)[1];
value + [0,compCenterY – myCenterY]Dan
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Perfect, thank you so much!
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Changing the template a bit.
What would I write if I want the width of the text box to be full screen 1920px and I just want the height of the box to change with the amount of text.
I can write
var w = s.sourceRectAtTime().width+1000;which would always have enough to cover both sides to the end of the screen. Is that the best approach?
var w = s.sourceRectAtTime().width+1000;
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