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============================================================================================
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(c) 2003 Robert Penner, all rights reserved.
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This work is subject to the terms in http://www.robertpenner.com/easing_terms_of_use.html.
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============================================================================================
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These tweening functions provide different flavors of
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math-based motion under a consistent API.
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2.0 - ported to ActionScript 2.0; functions now in packages and use strong typing
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1.5 - added bounce easing
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1.4 - added elastic and back easing
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1.3 - tweaked the exponential easing functions to make endpoints exact
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1.2 - inline optimizations (changing t and multiplying in one step)--thanks to Tatsuo Kato for the idea
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Discussed in Chapter 7 of
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Robert Penner's Programming Macromedia Flash MX
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(including graphs of the easing equations)
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http://www.robertpenner.com/profmx
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http://www.amazon.com/exec/obidos/ASIN/0072223561/robertpennerc-20