FlipEffect class

An effect that animates a 2.5D card flip rotation effect (via Transform). The effect can be horizontal or vertical.

The begin and end values specify the number of "flips" (ie. half turns, 180° or 𝝅 radians) from nominal. For example, 0.5 would be a 90 degree rotation (half a "flip"). It defaults to begin=-0.5, end=0.

alignment lets you set the origin of the rotation (ie. the point around which the rotation will occur). For example an alignment of Alignment.topCenter would rotate around the top of the child on a vertical flip. Default is Alignment.center.

perspective lets you adjust the focal length for the 2.5D effect. A higher number increases perspective transform (ie. reduces focal length). Default is 1.

direction indicates the direction of the flip. For example Axis.horizontal would cause it to rotate around the Y axis — flipping horizontally. Default is Axis.vertical.

Inheritance
Annotations

Constructors

FlipEffect({Duration? delay, Duration? duration, Curve? curve, double? begin, double? end, dynamic alignment, dynamic perspective, dynamic direction})
const

Properties

alignment → Alignment
final
begin → double?
The begin value for the effect. If null, effects should use a reasonable default value when appropriate.
finalinherited
curve → Curve?
The specified easing curve for the effect. If null, will inherit the curve from the previous effect, or use Animate.defaultCurve if this is the first effect.
finalinherited
delay → Duration?
The specified delay for the effect. If null, will inherit the delay from the previous effect, or use Duration.zero if this is the first effect.
finalinherited
direction → Axis
final
duration → Duration?
The specified duration for the effect. If null, will inherit the duration from the previous effect, or use Animate.defaultDuration if this is the first effect.
finalinherited
end → double?
The end value for the effect. If null, effects should use a reasonable default value when appropriate.
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
perspective → double
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

build(BuildContext context, Widget child, AnimationController controller, EffectEntry entry) → Widget
Builds the widgets that implement the effect on the target child, based on the provided AnimationController and EffectEntry.
override
buildAnimation(AnimationController controller, EffectEntry entry) → Animation<double>
Returns an animation based on the controller, entry, and begin/end values.
inherited
getBeginRatio(AnimationController controller, EffectEntry entry) → double
Returns a ratio corresponding to the beginning of the specified entry.
inherited
getEndRatio(AnimationController controller, EffectEntry entry) → double
Returns a ratio corresponding to the end of the specified entry.
inherited
getOptimizedBuilder<U>({required ValueListenable<U> animation, Widget? child, required TransitionBuilder builder}) → AnimatedBuilder
Returns an optimized AnimatedBuilder that doesn't rebuild if the value hasn't changed.
inherited
getToggleBuilder({required ValueListenable<double> animation, required Widget child, required bool toggle(), required ToggleEffectBuilder builder}) → AnimatedBuilder
Returns an AnimatedBuilder that rebuilds when the boolean value returned by the toggle function changes.
inherited
isAnimationActive(Animation animation) → bool
Check if the animation is currently running / active.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited

Static Methods

getTransformMatrix(double value, Axis direction, double perspective) → Matrix4

Constants

defaultAxis → const Axis
defaultPerspective → const double
defaultValue → const double
neutralValue → const double