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fading glow effect on animated text
I am working on a piece where I have musical notes appearing on a staff as they are played, and I decided it was easiest and most clean to create the notes as a single string of text (a single text layer) and utilize the text Animators to control the appearance. I based my animation on the “Word Processor” pre-set, which uses an Expression Control Effect (Slider Control), so I place keyframes on the “Type_on” slider to sync with the audio track. I’ve tweaked the pre-set to get what I want (including the removal of a cursor that would precede each character as it would appear) for the notes appearing, and I’m satisfied with it.
My question has to do with wanting to create a glow effect that appears when the character first appears, but then dissipates as the other characters continue to appear. So on the first frame that a character appears, the glow would be full strength, but then it would fade over the next 10 frames or so. So far I have been trying to achieve this with a duplicated layer of the text animation with a “flash” glow effect applied (more intense glow settings than for the “normal” state). I have tried various methods of offsetting or varying the Animator settings on the glow layer so that it appears but then disappears (rather than the notes staying visible like the underlying layer’s do). However, I can’t seem to get the control I want. I want the glow to fade more slowly than I am currently able to achieve. I only want full opacity of a glow layer note/character for a frame (maybe two), but then I want it to fade to 0% opacity over the next 10 frames. Right now the fully opaque glow note shows for four frames, and the fade happens over only three or four frames. I’ve posted a sample of what my output currently looks like.
https://web.mac.com/terrycoolidge/iWeb/AE-forum
Not sure if there is a completely different way of creating this effect that would also be fairly “automated” and not involve many, many layers. Maybe I’m close but I just need some tweaks. Or maybe there’s a slick way to do this with an expression. My guess is that I should be able to get the result I want if only the values that are currently being derived from the Slider Control could be “forced” to the increments that will give me the desired result. But this sounds like it could involve expression code that is beyond my current ability.
Whatever the solution… I’m all ears.
(AE 7.0.1 Professional running on Mac OS)
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