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java.lang.Objectorg.jdesktop.animation.timing.interpolation.DiscreteInterpolator
public final class DiscreteInterpolator
This class implements the Interpolator interface. It should be used in cases where a "discrete" animation is desired. A discrete animation is defined to be one where the values during an animation do not change smoothly between the boundary values, but suddenly, at the boundary points. For example, a discrete animation with KeyFrames where the KeyTimes are {0, .5, 1.0} and the KeyValues are (0, 1, 2} would, during the animation, retain the value of 0 until half-way through the animation and 1 through the rest of the animation.
Because there is no variation to this class, it is a singleton and
is referenced by using the getInstance()
static method.
Method Summary | |
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static DiscreteInterpolator |
getInstance()
Returns the single DiscreteInterpolator object |
float |
interpolate(float fraction)
This method always returns 0 for inputs less than 1, which will force users of this interpolation to assign a value equal to the value at the beginning of this timing interval, which is the desired behavior for discrete animations. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public static DiscreteInterpolator getInstance()
public float interpolate(float fraction)
interpolate
in interface Interpolator
fraction
- a value between 0 and 1, representing the elapsed
fraction of a time interval (either an entire animation cycle or an
interval between two KeyTimes, depending on where this Interpolator has
been set)
fracton == 0
, returns 1.
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