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pixels, motion, and scripting
david van brink // Mon 2010.11.22 21:15 // {after effects}

(AE: expression trivia)

(The parentheses in the post title mean that this post is essentially parenthetical.)

Arggh. Developing Pixel Bender kernels and plug-ins, my test files kept behaving erratically. Expression indexes were to blame. Each time I added or removed a parameter, the numbers all shift.

effect_expr.png

So you see, first enabling the expression produces effect("my_effect")(8). But it depends on the exact order of the parameters!

But effect("my_effect")("param 9") depends on the name.

I think I like the second one better, because I’m pretty good about nailing down my parameter names, but more likely to move them around order-wise.

(See?)

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