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Stingslang
01-04-2008, 08:15 PM
What exactly is an expression?

evenflcw
01-04-2008, 08:46 PM
An expression is a formula that can drive a animation channel (it's applied to). It's a way for the user to create custom automated animation. Very much like a motion modifier plugin will, but you write it yourself in a very concise language.

If you open up the Graph Editor, click the Expression tab and the click the Expression Builder button you'll find a short intro. It might be abit more detailed and not answer what they are but rather how they are used. Each command is also described.

I would not use the Expression Editor. It has a couple of usability issues and knowing the language itself is always good. But then again once your comfortably writing the expressions you won't bother toying around with the expression editor either.