Package javafx.animation

Class KeyValue

java.lang.Object

javafx.animation.KeyValue

public final class KeyValue
extends Object

Defines a key value to be interpolated for a particular interval along the animation. A KeyFrame, which defines a specific point on a timeline, can hold multiple KeyValues. KeyValue is an immutable class.

A KeyValue is defined by a target, which is an implementation of WritableValue, an end value and an Interpolator.

Most interpolators define the interpolation between two KeyFrames. (The only exception are tangent-interpolators.) The KeyValue of the second KeyFrame (in forward direction) specifies the interpolator to be used in the interval.

Tangent-interpolators define the interpolation to the left and to the right of a KeyFrame (see

invalid @link

Interpolator.TANGENT

).

By default, Interpolator.LINEAR is used in the interval.

Since:

JavaFX 2.0

See Also:

• Timeline
• KeyFrame
• Interpolator

Constructor Summary

Constructors

Constructor	Description
KeyValue(WritableValue<T> target, T endValue)	Creates a KeyValue that uses Interpolator.LINEAR.
KeyValue(WritableValue<T> target, T endValue, Interpolator interpolator)	Creates a KeyValue.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)	Indicates whether some other object is "equal to" this one.
Object	getEndValue()	Returns the end value of this KeyValue
Interpolator	getInterpolator()	Interpolator to be used for calculating the key value along the particular interval.
WritableValue<?>	getTarget()	Returns the target of this KeyValue
int	hashCode()	Returns a hash code for this KeyValue object.
String	toString()	Returns a string representation of this KeyValue object.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

KeyValue

public KeyValue(WritableValue<T> target,
 T endValue,
 Interpolator interpolator)

Creates a KeyValue.

Parameters:

target - the target

endValue - the end value

interpolator - the Interpolator

Throws:

NullPointerException - if target or interpolator are null

KeyValue

public KeyValue(WritableValue<T> target,
 T endValue)

Creates a KeyValue that uses Interpolator.LINEAR.

Parameters:

target - the target

endValue - the end value

Throws:

NullPointerException - if target or interpolator are null

Method Details

getTarget

public WritableValue<?> getTarget()

Returns the target of this KeyValue

Returns:

the target

getEndValue

public Object getEndValue()

Returns the end value of this KeyValue

Returns:

the end value

getInterpolator

public Interpolator getInterpolator()

Interpolator to be used for calculating the key value along the particular interval. By default, Interpolator.LINEAR is used.

toString

public String toString()

Returns a string representation of this KeyValue object.

Overrides:

toString in class Object

Returns:

a string representation of this KeyValue object.

hashCode

public int hashCode()

Returns a hash code for this KeyValue object.

Overrides:

hashCode in class Object

Returns:

a hash code for this KeyValue object.

equals

public boolean equals(Object obj)

Indicates whether some other object is "equal to" this one. Two KeyValues are considered equal, if their target, endValue, and interpolator are equal.

Overrides:

equals in class Object