CompositionObject.StartAnimationGroup(ICompositionAnimationBase) 方法

定義

命名空間:

Microsoft.UI.Composition

成立了一個動畫小組。

CompositionObject 上的 StartAnimationGroup 方法可以讓你啟動 CompositionAnimationGroup。 群組中的所有動畫都會同時在物件上啟動。

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)

參數

value

ICompositionAnimationBase

先從動畫組開始。

範例

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;
  }
}

備註

StartAnimationGroup 以 CompositionAnimationGroup 為參數，讓該群組中所有動畫同時在物件上啟動。 群組中的 CompositionAnimation 應該會被指派給 Target 屬性值。

要取得所有動畫的已完成事件，應從註冊為已完成事件的 CompositionScopedBatch 呼叫 StartAnimationGroup。