# Class FadeTransition

java.lang.Object
javafx.animation.Animation
javafx.animation.Transition
javafx.animation.FadeTransition

public final class FadeTransition extends Transition
This `Transition` creates a fade effect animation that spans its `duration`. This is done by updating the `opacity` variable of the `node` at regular intervals.

It starts from the `fromValue` if provided else uses the `node`'s `opacity` value.

It stops at the `toValue` value if provided else it will use start value plus `byValue`.

The `toValue` takes precedence if both `toValue` and `byValue` are specified.

Code Segment Example:

    import javafx.scene.shape.*;
    import javafx.animation.*;

    ...

        Rectangle rect = new Rectangle (100, 40, 100, 100);
        rect.setArcHeight(50);
        rect.setArcWidth(50);
        rect.setFill(Color.VIOLET);

        FadeTransition ft = new FadeTransition(Duration.millis(3000), rect);
        ft.setFromValue(1.0);
        ft.setToValue(0.3);
        ft.setCycleCount(4);
        ft.setAutoReverse(true);

        ft.play();

    ...

Since:
  JavaFX 2.0
See Also:
  - `Transition`
  - `Animation`

- ## Nested Class Summary

  ### Nested classes/interfaces declared in class Animation

  `Animation.Status`

- ## Property Summary

  Properties
  Type
  Property
  Description
  `final DoubleProperty`
  `byValue`
  Specifies the incremented stop opacity value, from the start, of this `FadeTransition`.
  `final ObjectProperty<Duration>`
  `duration`
  The duration of this `FadeTransition`.
  `final DoubleProperty`
  `fromValue`
  Specifies the start opacity value for this `FadeTransition`.
  `final ObjectProperty<Node>`
  `node`
  The target node of this `Transition`.
  `final DoubleProperty`
  `toValue`
  Specifies the stop opacity value for this `FadeTransition`.

  ### Properties declared in class Transition

  `interpolator`

  ### Properties declared in class Animation

  `autoReverse, currentRate, currentTime, cycleCount, cycleDuration, delay, onFinished, rate, status, totalDuration`

- ## Field Summary

  ### Fields declared in class Animation

  `INDEFINITE`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `FadeTransition()`
  The constructor of `FadeTransition`
  `FadeTransition(Duration duration)`
  The constructor of `FadeTransition`
  `FadeTransition(Duration duration, Node node)`
  The constructor of `FadeTransition`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `final DoubleProperty`
  `byValueProperty()`
  Specifies the incremented stop opacity value, from the start, of this `FadeTransition`.
  `final ObjectProperty<Duration>`
  `durationProperty()`
  The duration of this `FadeTransition`.
  `final DoubleProperty`
  `fromValueProperty()`
  Specifies the start opacity value for this `FadeTransition`.
  `final double`
  `getByValue()`
  Gets the value of the `byValue` property.
  `final Duration`
  `getDuration()`
  Gets the value of the `duration` property.
  `final double`
  `getFromValue()`
  Gets the value of the `fromValue` property.
  `final Node`
  `getNode()`
  Gets the value of the `node` property.
  `final double`
  `getToValue()`
  Gets the value of the `toValue` property.
  `protected void`
  `interpolate(double frac)`
  The method `interpolate()` has to be provided by implementations of `Transition`.
  `final ObjectProperty<Node>`
  `nodeProperty()`
  The target node of this `Transition`.
  `final void`
  `setByValue(double value)`
  Sets the value of the `byValue` property.
  `final void`
  `setDuration(Duration value)`
  Sets the value of the `duration` property.
  `final void`
  `setFromValue(double value)`
  Sets the value of the `fromValue` property.
  `final void`
  `setNode(Node value)`
  Sets the value of the `node` property.
  `final void`
  `setToValue(double value)`
  Sets the value of the `toValue` property.
  `final DoubleProperty`
  `toValueProperty()`
  Specifies the stop opacity value for this `FadeTransition`.

  ### Methods declared in class Transition

  `getCachedInterpolator, getInterpolator, getParentTargetNode, interpolatorProperty, setInterpolator`

  ### Methods declared in class Animation

  `autoReverseProperty, currentRateProperty, currentTimeProperty, cycleCountProperty, cycleDurationProperty, delayProperty, getCuePoints, getCurrentRate, getCurrentTime, getCycleCount, getCycleDuration, getDelay, getOnFinished, getRate, getStatus, getTargetFramerate, getTotalDuration, isAutoReverse, jumpTo, jumpTo, onFinishedProperty, pause, play, playFrom, playFrom, playFromStart, rateProperty, setAutoReverse, setCycleCount, setCycleDuration, setDelay, setOnFinished, setRate, setStatus, statusProperty, stop, totalDurationProperty`

  ### Methods declared in class Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- ## Property Details

  - ### node

    public final ObjectProperty<Node> nodeProperty
    The target node of this `Transition`.

    It is not possible to change the target `node` of a running `FadeTransition`. If the value of `node` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    See Also:
      - `getNode()`
      - `setNode(Node)`
      - `nodeProperty()`

  - ### duration

    public final ObjectProperty<Duration> durationProperty
    The duration of this `FadeTransition`.

    It is not possible to change the `duration` of a running `FadeTransition`. If the value of `duration` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    Note: While the unit of `duration` is a millisecond, the granularity depends on the underlying operating system and will in general be larger. For example animations on desktop systems usually run with a maximum of 60fps which gives a granularity of ~17 ms. Setting duration to value lower than `Duration.ZERO` will result in `IllegalArgumentException`.

    Default value:
      400ms
    See Also:
      - `getDuration()`
      - `setDuration(Duration)`
      - `durationProperty()`

  - ### fromValue

    public final DoubleProperty fromValueProperty
    Specifies the start opacity value for this `FadeTransition`.

    It is not possible to change `fromValue` of a running `FadeTransition`. If the value of `fromValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    Default value:
      `Double.NaN`
    See Also:
      - `getFromValue()`
      - `setFromValue(double)`
      - `fromValueProperty()`

  - ### toValue

    public final DoubleProperty toValueProperty
    Specifies the stop opacity value for this `FadeTransition`.

    It is not possible to change `toValue` of a running `FadeTransition`. If the value of `toValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    Default value:
      `Double.NaN`
    See Also:
      - `getToValue()`
      - `setToValue(double)`
      - `toValueProperty()`

  - ### byValue

    public final DoubleProperty byValueProperty
    Specifies the incremented stop opacity value, from the start, of this `FadeTransition`.

    It is not possible to change `byValue` of a running `FadeTransition`. If the value of `byValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    See Also:
      - `getByValue()`
      - `setByValue(double)`
      - `byValueProperty()`

- ## Constructor Details

  - ### FadeTransition

    public FadeTransition(Duration duration, Node node)
    The constructor of `FadeTransition`
    Parameters:
      `duration` - The duration of the `FadeTransition`
      `node` - The `node` which opacity will be animated

  - ### FadeTransition

    public FadeTransition(Duration duration)
    The constructor of `FadeTransition`
    Parameters:
      `duration` - The duration of the `FadeTransition`

  - ### FadeTransition

    public FadeTransition()
    The constructor of `FadeTransition`

- ## Method Details

  - ### setNode

    public final void setNode(Node value)
    Sets the value of the `node` property.
    Property description:
      The target node of this `Transition`.

      It is not possible to change the target `node` of a running `FadeTransition`. If the value of `node` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    Parameters:
      `value` - the value for the `node` property
    See Also:
      - `getNode()`
      - `nodeProperty()`

  - ### getNode

    public final Node getNode()
    Gets the value of the `node` property.
    Property description:
      The target node of this `Transition`.

      It is not possible to change the target `node` of a running `FadeTransition`. If the value of `node` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    Returns:
      the value of the `node` property
    See Also:
      - `setNode(Node)`
      - `nodeProperty()`

  - ### nodeProperty

    public final ObjectProperty<Node> nodeProperty()
    The target node of this `Transition`.

    It is not possible to change the target `node` of a running `FadeTransition`. If the value of `node` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    Returns:
      the `node` property
    See Also:
      - `getNode()`
      - `setNode(Node)`

  - ### setDuration

    public final void setDuration(Duration value)
    Sets the value of the `duration` property.
    Property description:
      The duration of this `FadeTransition`.

      It is not possible to change the `duration` of a running `FadeTransition`. If the value of `duration` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

      Note: While the unit of `duration` is a millisecond, the granularity depends on the underlying operating system and will in general be larger. For example animations on desktop systems usually run with a maximum of 60fps which gives a granularity of ~17 ms. Setting duration to value lower than `Duration.ZERO` will result in `IllegalArgumentException`.

    Default value:
      400ms
    Parameters:
      `value` - the value for the `duration` property
    See Also:
      - `getDuration()`
      - `durationProperty()`

  - ### getDuration

    public final Duration getDuration()
    Gets the value of the `duration` property.
    Property description:
      The duration of this `FadeTransition`.

      It is not possible to change the `duration` of a running `FadeTransition`. If the value of `duration` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

      Note: While the unit of `duration` is a millisecond, the granularity depends on the underlying operating system and will in general be larger. For example animations on desktop systems usually run with a maximum of 60fps which gives a granularity of ~17 ms. Setting duration to value lower than `Duration.ZERO` will result in `IllegalArgumentException`.

    Default value:
      400ms
    Returns:
      the value of the `duration` property
    See Also:
      - `setDuration(Duration)`
      - `durationProperty()`

  - ### durationProperty

    public final ObjectProperty<Duration> durationProperty()
    The duration of this `FadeTransition`.

    It is not possible to change the `duration` of a running `FadeTransition`. If the value of `duration` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    Note: While the unit of `duration` is a millisecond, the granularity depends on the underlying operating system and will in general be larger. For example animations on desktop systems usually run with a maximum of 60fps which gives a granularity of ~17 ms. Setting duration to value lower than `Duration.ZERO` will result in `IllegalArgumentException`.

    Default value:
      400ms
    Returns:
      the `duration` property
    See Also:
      - `getDuration()`
      - `setDuration(Duration)`

  - ### setFromValue

    public final void setFromValue(double value)
    Sets the value of the `fromValue` property.
    Property description:
      Specifies the start opacity value for this `FadeTransition`.

      It is not possible to change `fromValue` of a running `FadeTransition`. If the value of `fromValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    Default value:
      `Double.NaN`
    Parameters:
      `value` - the value for the `fromValue` property
    See Also:
      - `getFromValue()`
      - `fromValueProperty()`

  - ### getFromValue

    public final double getFromValue()
    Gets the value of the `fromValue` property.
    Property description:
      Specifies the start opacity value for this `FadeTransition`.

      It is not possible to change `fromValue` of a running `FadeTransition`. If the value of `fromValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    Default value:
      `Double.NaN`
    Returns:
      the value of the `fromValue` property
    See Also:
      - `setFromValue(double)`
      - `fromValueProperty()`

  - ### fromValueProperty

    public final DoubleProperty fromValueProperty()
    Specifies the start opacity value for this `FadeTransition`.

    It is not possible to change `fromValue` of a running `FadeTransition`. If the value of `fromValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    Default value:
      `Double.NaN`
    Returns:
      the `fromValue` property
    See Also:
      - `getFromValue()`
      - `setFromValue(double)`

  - ### setToValue

    public final void setToValue(double value)
    Sets the value of the `toValue` property.
    Property description:
      Specifies the stop opacity value for this `FadeTransition`.

      It is not possible to change `toValue` of a running `FadeTransition`. If the value of `toValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    Default value:
      `Double.NaN`
    Parameters:
      `value` - the value for the `toValue` property
    See Also:
      - `getToValue()`
      - `toValueProperty()`

  - ### getToValue

    public final double getToValue()
    Gets the value of the `toValue` property.
    Property description:
      Specifies the stop opacity value for this `FadeTransition`.

      It is not possible to change `toValue` of a running `FadeTransition`. If the value of `toValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    Default value:
      `Double.NaN`
    Returns:
      the value of the `toValue` property
    See Also:
      - `setToValue(double)`
      - `toValueProperty()`

  - ### toValueProperty

    public final DoubleProperty toValueProperty()
    Specifies the stop opacity value for this `FadeTransition`.

    It is not possible to change `toValue` of a running `FadeTransition`. If the value of `toValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    Default value:
      `Double.NaN`
    Returns:
      the `toValue` property
    See Also:
      - `getToValue()`
      - `setToValue(double)`

  - ### setByValue

    public final void setByValue(double value)
    Sets the value of the `byValue` property.
    Property description:
      Specifies the incremented stop opacity value, from the start, of this `FadeTransition`.

      It is not possible to change `byValue` of a running `FadeTransition`. If the value of `byValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    Parameters:
      `value` - the value for the `byValue` property
    See Also:
      - `getByValue()`
      - `byValueProperty()`

  - ### getByValue

    public final double getByValue()
    Gets the value of the `byValue` property.
    Property description:
      Specifies the incremented stop opacity value, from the start, of this `FadeTransition`.

      It is not possible to change `byValue` of a running `FadeTransition`. If the value of `byValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    Returns:
      the value of the `byValue` property
    See Also:
      - `setByValue(double)`
      - `byValueProperty()`

  - ### byValueProperty

    public final DoubleProperty byValueProperty()
    Specifies the incremented stop opacity value, from the start, of this `FadeTransition`.

    It is not possible to change `byValue` of a running `FadeTransition`. If the value of `byValue` is changed for a running `FadeTransition`, the animation has to be stopped and started again to pick up the new value.

    Returns:
      the `byValue` property
    See Also:
      - `getByValue()`
      - `setByValue(double)`

  - ### interpolate

    protected void interpolate(double frac)
    The method `interpolate()` has to be provided by implementations of `Transition`. While a `Transition` is running, this method is called in every frame. The parameter defines the current position with the animation. At the start, the fraction will be `0.0` and at the end it will be `1.0`. How the parameter increases, depends on the `interpolator`, e.g. if the `interpolator` is `Interpolator.LINEAR`, the fraction will increase linear. This method must not be called by the user directly.
    Specified by:
      `interpolate` in class `Transition`
    Parameters:
      `frac` - The relative position