MaterialRectArcTween class
A Tween that interpolates a Rect by having its opposite corners follow circular arcs.
This class specializes the interpolation of Tween<Rect> so that instead of growing or shrinking linearly, opposite corners of the rectangle follow arcs in a manner consistent with Material Design principles.
Specifically, the rectangle corners whose diagonals are closest to the overall direction of the animation follow arcs defined with MaterialPointArcTween.
See also:
- MaterialRectCenterArcTween, which interpolates a rect along a circular arc between the begin and end Rect's centers.
- Tween, for a discussion on how to use interpolation objects.
- MaterialPointArcTween, the analog for Offset interpolation.
- RectTween, which does a linear rectangle interpolation.
- Hero.createRectTween, which can be used to specify the tween that defines a hero's path.
Constructors
- MaterialRectArcTween({Rect? begin, Rect? end})
- Creates a Tween for animating Rects along a circular arc.
Properties
- begin ↔ Rect?
-
The value this variable has at the beginning of the animation.
getter/setter pairinherited-getteroverride-setter
- beginArc → MaterialPointArcTween?
-
The path of the corresponding begin, end rectangle corners that lead
the animation.
no setter
- end ↔ Rect?
-
The value this variable has at the end of the animation.
getter/setter pairinherited-getteroverride-setter
- endArc → MaterialPointArcTween?
-
The path of the corresponding begin, end rectangle corners that trail
the animation.
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
animate(
Animation< double> parent) → Animation<Rect?> -
Returns a new Animation that is driven by the given animation but that
takes on values determined by this object.
inherited
-
chain(
Animatable< double> parent) → Animatable<Rect?> -
Returns a new Animatable whose value is determined by first evaluating
the given parent and then evaluating this object.
inherited
-
evaluate(
Animation< double> animation) → Rect? -
The current value of this object for the given Animation.
inherited
-
lerp(
double t) → Rect -
Returns the value this variable has at the given animation clock value.
override
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
override
-
transform(
double t) → Rect? -
Returns the interpolated value for the current value of the given animation.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited