[Anark] Jitter (Animation Behavior)

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发表于 2011-10-21 09:43:00 |只看该作者 |倒序浏览

            Jitter (Animation Behavior)


         Summary


         Animates the value of any property on the parent object by a random (but bounded) amount a set number of times per second.


            Category


            Latest Behaviors


            Author


            Gavin Kistner


            Difficulty


            (Reference)


            Time to Complete


            5 Minutes


         Downloads


         Click Here

         to download the associated files.


         (This document covers version 2.1.2 of the 'Jitter' behavior, current as of 2005-Feb-11)


         Description


         The

            Property Name

         is specified relative to the behavior’s parent. For example, ‘rotation.x’ refers to the x value of the ‘rotation’ property on the object to which the behavior is attached.


         The

            Jitter Amount

         property is maximum amount to deviate from the initial value. (For example, if the original value of the property is 75, and

            Jitter Amount

         is set to 15, the property will jitter to values between 60 and 90.)


         The

            Jitter Time

         property is the number of seconds it takes to complete each jitter. (Larger is slower; a value of 0.1 will cause the property to reach an extreme value 10 times a second, while a value of .5 will only reach an extreme value 2 times per second.)


         If

            Start Immediately?

         is not checked, the behavior will not do anything until the

            Start

         action is called.


         To change the value around which the jitter occurs, use the

            Set Center Value

         action (or call the setCenter method of this behavior in script).


         Basic Properties


            Property Name


            Code reference to the property to animate.


            Jitter Amount


            Specifies how much the parameter's value will drift from original (at most).


            Jitter Time


            Number of seconds it takes to complete each 'jitter'.


            Start Immediately?


            Start jittering immediately, or wait for the Start action to be called?


         Actions


            Start


            Start jittering the controlled property.


            Stop


            Stop jittering the controlled property.


            Toggle


            If the Jitter is running, stop it; otherwise, start it.


            Set Center Value


            Set the center value around which the property will jitter.


            Center Value


            The new center value.


         Events


            Started


            Fires whenever the jitter is started.


            Stopped


            Fires whenever the jitter is stopped.


         Demonstration


            View Demonstration Project


            Download Project File