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auto scale problem
Hi all. I have a rig set up, ( project posted below ), and I know the problem but I haven’t figured out the solution.
I have a text layer followed by a precomp. ( this precomp will have a logo in it that will never need to be changed ). so for this example the precomp has a white solid in it.
I have set up the precomp to follow the text layer, so it will automatically move to the correct position.
I have another expression to auto center these 2 layers so they stay in the middle of the comp ( 1080 px ).
Then my final expression, is to force these 2 layers to auto scale down to never be longer than the safe title lines. ( I need to assume that the text layer might read something very long like ” Available mondays through fridays for free on”
this is where the other expressions are not working. the layers scale down but the position of the precomp moves continuously left as the the text scales down. I need the precomp to keep the relative distance from the precomp to the text.
Can anyone help me correct my first expression to take this into account ?
Thanks so much for any help
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3 Replies
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I think the problem might be that the gap gets scaled because of your parenting chain. I think I’d try to set it up without the explicit parenting (just handle positioning and scaling with expressions).
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I have tried to redo it multiple times and I cant find a way to make it work. I am sure the problem lies with the sourcerectattime on the precomp, because once the text scales down with longer text, the original calculation doesnt work to place that precomp after the text
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finally found the error
I had a + in my initial code that I forgot about.
I cant even remember the original reason I had that in there, but for this purpose, it is not needed. here is the fixed project for anyone who would need this kind of rig
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It sounds like you’re trying to ensure that the precomp containing the logo maintains its position relative to the text layer as the text scales down. To achieve this, you can use the following expression on the position property of the precomp layer:
javascript
textLayer = thisComp.layer("Text Layer Name"); // Replace "Text Layer Name" with the actual name of your text layer offset = 50; // Adjust this value to set the distance between the text and the precomp // Calculate the new position of the precomp based on the text layer's position and scale x = textLayer.transform.position[0] + textLayer.sourceRectAtTime().width / 2 + offset; y = textLayer.transform.position[1]; [x, y]This expression calculates the x-position of the precomp based on the text layer’s position and width. The
offsetvariable controls the distance between the text and the precomp. Adjust this value as needed for your layout. The y-position remains unchanged to keep the precomp vertically aligned with the text layer.Apply this expression to the position property of your precomp layer, and it should maintain its relative position to the text layer as the text scales down.
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