/// <summary>
/// Creates and starts a scalar animation on the current <see cref="CompositionObject"/>
/// </summary>
/// <param name="target">The target to animate</param>
/// <param name="propertyPath">The path that identifies the property to animate</param>
/// <param name="from">The optional starting value for the animation</param>
/// <param name="to">The final value for the animation</param>
/// <param name="duration">The animation duration</param>
/// <param name="delay">The optional initial delay for the animation</param>
/// <param name="ease">The optional easing function for the animation</param>
public static void BeginScalarAnimation(
[NotNull] this CompositionObject target,
[NotNull] string propertyPath,
float?from, float to,
TimeSpan duration, TimeSpan?delay,
[CanBeNull] CompositionEasingFunction ease = null)
{
target.StartAnimation(propertyPath, target.Compositor.CreateScalarKeyFrameAnimation(from, to, duration, delay, ease));
}
/// <summary>
/// Creates and starts a <see cref="Vector3"/> animation on the current <see cref="CompositionObject"/>
/// </summary>
/// <param name="target">The target to animate</param>
/// <param name="propertyPath">The path that identifies the property to animate</param>
/// <param name="from">The optional starting value for the animation</param>
/// <param name="to">The final value for the animation</param>
/// <param name="duration">The animation duration</param>
/// <param name="delay">The optional initial delay for the animation</param>
/// <param name="ease">The optional easing function for the animation</param>
public static void BeginVector3Animation(
this CompositionObject target,
string propertyPath,
Vector3?from, Vector3 to,
TimeSpan duration, TimeSpan?delay,
CompositionEasingFunction ease = null)
{
target.StartAnimation(propertyPath, target.Compositor.CreateVector3KeyFrameAnimation(from, to, duration, delay, ease));
}
/// <summary>
/// Starts an <see cref="ExpressionAnimation"/> to keep the size of the source <see cref="CompositionObject"/> in sync with the target <see cref="UIElement"/>
/// </summary>
/// <param name="source">The <see cref="CompositionObject"/> to start the animation on</param>
/// <param name="target">The target <see cref="UIElement"/> to read the size updates from</param>
public static void BindSize(this CompositionObject source, UIElement target)
{
Visual visual = target.GetVisual();
ExpressionAnimation bindSizeAnimation = Window.Current.Compositor.CreateExpressionAnimation($"{nameof(visual)}.Size");
bindSizeAnimation.SetReferenceParameter(nameof(visual), visual);
// Start the animation
source.StartAnimation("Size", bindSizeAnimation);
}
void StartAnimations(Wd.CompositionObject source, Wc.CompositionObject target)
{
foreach (var animator in source.Animators)
{
var animation = GetCompositionAnimation(animator.Animation);
target.StartAnimation(animator.AnimatedProperty, animation);
var controller = animator.Controller;
if (controller != null)
{
var animationController = GetAnimationController(controller);
if (controller.IsPaused)
{
animationController.Pause();
}
}
}
}
/// <summary>
/// Starts an animation on the given property of a <see cref="CompositionObject"/>
/// </summary>
/// <param name="target">The target <see cref="CompositionObject"/></param>
/// <param name="property">The name of the property to animate</param>
/// <param name="value">The final value of the property</param>
/// <param name="duration">The animation duration</param>
public static Task StartAnimationAsync([NotNull] this CompositionObject target, string property, float value, TimeSpan duration)
{
// Stop previous animations
target.StopAnimation(property);
// Setup the animation
ScalarKeyFrameAnimation animation = target.Compositor.CreateScalarKeyFrameAnimation();
animation.InsertKeyFrame(1f, value);
animation.Duration = duration;
// Get the batch and start the animations
CompositionScopedBatch batch = target.Compositor.CreateScopedBatch(CompositionBatchTypes.Animation);
TaskCompletionSource <object> tcs = new TaskCompletionSource <object>();
batch.Completed += (s, e) => tcs.SetResult(null);
target.StartAnimation(property, animation);
batch.End();
return(tcs.Task);
}
public static void BeginVector3Animation(this CompositionObject compObj, string propertyPath, Vector3 to, Vector3?from, TimeSpan duration, TimeSpan?delay, CompositionEasingFunction ease)
{
compObj.StartAnimation(propertyPath,
compObj.Compositor.CreateVector3KeyFrameAnimation(to, from, duration, delay, ease));
}