GTicker class
GTicker provides a way to schedule callbacks that will be executed on
every frame. In GraphX, GTicker is used at the core to update the
DisplayObject tree and the inner Ticker that runs it, also invalidates the
rendering for the CustomPainter through the ScenePainter when
SceneConfig.autoUpdateRender, is true.
The GTicker class internally creates a Ticker (provided the Flutter). On each tick, it calculates the elapsed time and the delta time between the current and previous frames. It also dispatches the onFrame signal, which is used to update the DisplayObject tree.
It is important to note that GTicker is not meant to be used directly by the user, as it is used internally by the GraphX framework.
Properties
- currentDeltaRatio → double
-
The ratio of the current delta time to the expected delta time.
no setter
- currentDeltaTime → double
-
The time elapsed since the last frame in seconds.
no setter
- currentTime → double
-
The current time in seconds.
no setter
- frameRate ↔ double
-
The frame rate of the Ticker in frames per second.
getter/setter pair
- hashCode → int
-
The hash code for this object.
no setterinherited
- isActive → bool
-
Indicates whether the Ticker is currently active or not.
Whether time is elapsing for this Ticker.
Becomes true when resume is called and false when pause is called.
no setter
- isTicking → bool
-
Indicates whether the Ticker is currently ticking or not.
no setter
-
onFrame
→ EventSignal<
double> -
Signal dispatched on every frame with the elapsed time since the last
frame as a parameter.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
callNextFrame(
VoidCallback callback) → void -
Schedules
callbackto be executed on the next frame. -
dispose(
) → void - Removes all listeners from the onFrame signal and disposes the Ticker object.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
pause(
) → void -
Pauses the Ticker if it's currently ticking.
This is equivalent to calling
Ticker.muted with
true. -
resume(
) → void -
Resumes the Ticker if it's not currently ticking.
This is equivalent to calling Ticker.muted with
false. -
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited