A Tween that animates a Point along a circular arc.

The arc's radius is related to the bounding box that contains the begin and end points. If the bounding box is taller than it is wide, then the center of the circle will be horizontally aligned with the end point. Otherwise the center of the circle will be aligned with the begin point. The arc's sweep is always less than or equal to 90 degrees.

Unlike those of most Tweens, the begin and end members of a MaterialPointArcTween are immutable.

See also:

Inheritance

Constructors

MaterialPointArcTween({@required Point begin, @required Point end })

Creates a Tween for animating Points along a circular arc.

Properties

begin → Point

Setting the arc's begin parameter is not supported. Construct a new arc instead.

write-only
beginAngle → double

The beginning of the arc's sweep in radians, measured from the positive X axis. Positive angles turn clockwise. Null if begin and end are horiztonally or vertically aligned.

read-only
center → Point

The center of the circular arc, null if begin and end are horiztonally or vertically aligned.

read-only
end → Point

Setting the arc's end parameter is not supported. Construct a new arc instead.

write-only
endAngle → double

The end of the arc's sweep in radians, measured from the positive X axis. Positive angles turn clockwise.

read-only
hashCode → int

read-only
radius → double

The radius of the circular arc, null if begin and end are horiztonally or vertically aligned.

read-only
runtimeType → Type

A representation of the runtime type of the object.

read-only, inherited

Operators

operator ==(other) → bool

The equality operator.

Methods

lerp(double t) → Point

Returns the value this variable has at the given animation clock value.

toString() → String

Returns a string representation of this object.

animate(Animation<double> parent) → Animation<Point>

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<Point>

Returns a new Animatable whose value is determined by first evaluating the given parent and then evaluating this object.

inherited
evaluate(Animation<double> animation) → Point

Returns the interpolated value for the current value of the given animation.

inherited
noSuchMethod(Invocation invocation) → dynamic

Invoked when a non-existent method or property is accessed.

inherited