CompositionObject.StartAnimationGroup(ICompositionAnimationBase) 方法
定义
重要
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启动动画组。
使用 CompositionObject 上的 StartAnimationGroup 方法可以启动 CompositionAnimationGroup。 组中的所有动画都将在 对象上同时启动。
public:
virtual void StartAnimationGroup(ICompositionAnimationBase ^ value) = StartAnimationGroup;void StartAnimationGroup(ICompositionAnimationBase const& value);public void StartAnimationGroup(ICompositionAnimationBase value);function startAnimationGroup(value)Public Sub StartAnimationGroup (value As ICompositionAnimationBase)参数
要启动的动画组。
示例
class PropertyAnimation
{
PropertyAnimation(Compositor compositor, SpriteVisual heroVisual)
{
// Define ImplicitAnimations
ImplicitAnimationCollection implicitAnimations = compositor.CreateImplicitAnimationCollection();
// Animate multiple properties on the target when the “Offset” property changes.
CompositionAnimationGroup animationGroup = compositor.CreateCompositionAnimationGroup();
animationGroup.Add(CreateSizeAnimation(compositor));
animationGroup.Add(CreateRotationAnimation(compositor));
// Set the CenterPoint so that rotation will be around the center
heroVisual.CenterPoint = new Vector3((heroVisual.Size.X/2.0f), (heroVisual.Size.Y/2.0f), 0.0f);
// Start AnimationGroup
heroVisual.StartAnimationGroup(animationGroup);
}
Vector2KeyFrameAnimation CreateSizeAnimation(Compositor compositor)
{
Vector2KeyFrameAnimation animation = compositor.CreateVector2KeyFrameAnimation();
CubicBezierEasingFunction easing = compositor.CreateCubicBezierEasingFunction(new Vector2(0.80f, 0.0f), new Vector2(0.95f, 1.0f));
// value (as the animation will target on the “Size” property).
animation.InsertExpressionKeyFrame(0f, "this.StartingValue", easing);
animation.InsertExpressionKeyFrame(1f, "this.StartingValue * 2", easing);
animation.Duration = TimeSpan.FromSeconds(0.25);
animation.Target = “Size”;
return animation;
}
ScalarKeyFrameAnimation CreateRotationAnimation(Compositor compositor)
{
ScalarKeyFrameAnimation animation = compositor.CreateScalarKeyFrameAnimation();
// Create KeyFrameAnimation to animate RotationAngleInDegrees by 90 degrees.
animation.InsertExpressionKeyFrame(0f, "this.StartingValue”);
animation.InsertExpressionKeyFrame(1f, "this.StartingValue + 90.0f”);
animation.Duration = TimeSpan.FromSeconds(0.25);
animation.Target = “RotationAngleInDegrees”;
return animation;
}
}
注解
StartAnimationGroup 采用 CompositionAnimationGroup 作为参数，以在对象上同时启动组中的所有动画。 组中的 CompositionAnimation 应具有分配给 Target 属性的值。
若要获取所有动画的 Completed 事件，应使用已注册的 Completed 事件从 CompositionScopedBatch 调用 StartAnimationGroup。