Motion class abstract
Motions are used to animate properties of nodes or any other type of objects. The motions are powered by an MotionController, typically associated with a Node. The most commonly used motion is the MotionTween which interpolates a property between two values over time.
Motions can be nested in different ways; played in sequence using the MotionSequence, or looped using the MotionRepeat.
You should typically not override this class directly, instead override MotionInterval or MotionInstant if you need to create a new action class.
- Implementers
Constructors
- Motion()
Properties
- duration → double
-
The total time it will take to complete the motion, in seconds.
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
- isFinished → bool
-
Returns true if the Motion has completed.
no setter
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
step(
double dt) → void -
Moves to the next time step in an motion,
dtis the delta time since the last time step in seconds. Typically this method is called from the MotionController. -
toString(
) → String -
A string representation of this object.
inherited
-
update(
double t) → void -
Sets the motion to a specific point in time. The
tvalue that is passed in is a normalized value 0.0 to 1.0 of the duration of the motion. Every motion will always recieve a callback with the end time point (1.0), unless it is cancelled.
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited