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Oscillate Rotation, or any single value

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Creates an oscillating motion between two specified values over a specified period of time
(in seconds).
 After Effects 7
Useful things
Expressions

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Use Expression Control angles or sliders for “ from”, “to”, and an Expression
Control slider assigned to “period” for fine control. You can apply these to any layer.
Change “linear” to “ease” for smoother interpolation.
by Michael Natkin & Brian Maffitt
from = -45; //one end of your oscillation
to = 45; //the other end of your oscillation
period = 1.5; //time between oscillation points (multiply by 2 for a round trip)
t = time % (period * 2);
if (t > period) t = 2 * period - t;
linear(t, 0, period, from, to)



(Min. Version: After Effects 7, Category: Useful things, Type: Expressions)
posted by vfx007 on Dec 11, 2008

 

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