在WPF中，如何將緩動功能添加到我的動畫中？

Question

我正在代碼中創建doubleAniation，我想爲它添加一個緩動函數，所以我該如何做？

Answer 1

這裏是我如何做到這一點： -

 DoubleAnimationUsingKeyFrames compassRoseAnimation = new DoubleAnimationUsingKeyFrames(); 
     compassRoseAnimation.Duration = new Duration(TimeSpan.FromSeconds(2)); 
     QuarticEase easingFunction = new QuarticEase(); 
     easingFunction.EasingMode = EasingMode.EaseInOut; 
     EasingDoubleKeyFrame startAnimation = new EasingDoubleKeyFrame(previousRotationDegrees, KeyTime.FromPercent(0)); 
     EasingDoubleKeyFrame endAnimation = new EasingDoubleKeyFrame(newRotationDegrees, KeyTime.FromPercent(1.0), easingFunction); 
     compassRoseAnimation.KeyFrames.Add(startAnimation); 
     compassRoseAnimation.KeyFrames.Add(endAnimation); 

     RotateTransform rotateTransform = new RotateTransform(); 
     CompassWithNumbersControl.RenderTransform = rotateTransform; 
     rotateTransform.BeginAnimation(RotateTransform.AngleProperty, compassRoseAnimation); 

Answer 2

我已經搞清楚了。我在尋找Easing屬性，但實際上它被稱爲KeySpline，我必須使用DoubleAniamtionUsingKeyFrames來獲得緩動功能。

Answer 3

這是沒有必要使用DoubleAnimationUsingKeyFrames它可以只用DoubleAnimation來完成：

CircleEase easing = new CircleEase(); // or whatever easing class you want 
easing.EasingMode = EasingMode.EaseInOut; 
DoubleAnimation scrollQueue = new DoubleAnimation(); 
scrollQueue.By = -singleScrollAmt; 
scrollQueue.EasingFunction = easing; 
scrollQueue.Duration = TimeSpan.FromSeconds(0.5); 
MyTextBlock.BeginAnimation(Canvas.TopProperty, scrollQueue);