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sourceRectAtTime does not work with text animators
I’m using sourceRectAtTime with some text layers. As I type the text I can see the background layer growing accordingly, however when I add a text animator so I can have the text build over time the background layer stops animating, it still recognizes the boundaries of the text layer via the sourceRect… expression but it does not animate its size over time.
Every single example I’ve seen online shows this is possible, but when I add the animator, either with keyframes or expressions it just freezes.
Any idea why? I’m using CC2019.
Below is the expression I’m using.
s=thisComp.layer("xp").effect("Layer Control")("Layer");
x=s.sourceRectAtTime().width;
y=s.sourceRectAtTime().height;
[x,y]; -
5 Replies
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I don’t think it will work with an Animator. I think you have to actually manipulate the source text to create your type-on effect.
Dan
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It does, only not with opacity, even at 0% it still reads the characters as fully being there. I changed my animator to scale instead of opacity and it works as expected.
There are a ton of limitations with this expression, with all the fiddling that has to be done is not that useful.
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Is there a work around for this?
i.e, being able to get the specific height of the (currently displayed) text block?Alternatively…how else does one “manipulate the source text to create your type-on effect”?
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If you create a type-on effect with a source text expression like this:
rate = 20;
value.substr(0,time*rate)then
yourTextLayer.sourceRectAtTime(time,false)
will give you accurate results.
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You Sir, are a legend. Thankyou.
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