The idea of changing Transform Rectangle/Scale is not at all useful in a day to day workflow. The tutorial is very basic, the workflow is a little inefficient, there is no compensation for text layer scale or position, so all Valentina Vee taught you was a very basic approach to creating a box behind a text layer. I don't even know how to think this through it's so confusing, whatever i try doesn't seem to get me any closer to a solution. I thought of using a centred anchor point for the rectange and tracking it to the calcuated centre of the text layer but I dont know how to get that, and as it is left anchored, the position just stays in the same spot so that doesn't help either.
I'm not sure if I can simply set the anchor position for both to the correct positions and that will work or if I need to use an expression to compute the anchor point. Should I be using anchor or position? If I knew how to access the centre point of the text (x_location + width/2?) then i'd just have a centred anchor on the rectangle and track it to the changing centre point of the text. I know how to use anchors in Illustrator, InDesign etc but I must admit i find them confusing to use in AE at times. Now the rectangle beneath it moves to the wrong position on screen unless same width of text as how i set it up. So I left justify my first line of type and set it's anchor to the left side of the text box so as I type more chars the text moves out to the right and the existing characters do not move. Problem is I need my type left-justified as I'm needing three lines of left just fied type, each lined up at same left margin. Then it adds a control slider for a padding effect. I was following along an Adobe tutorial that has type centred on screen, centred paragraph style and uses a simple expression to make a coloured rounded-rectangle calacute it's size from the sourceRecAtTime() property of the text layer.
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