[英]WPF Storyboard Animation Not Working
我有我的自定義3D模型類(模型),其中包含Visual3D元素和一個Storyboard
(sb),用於保存與該模型有關的動畫。 我正在嘗試使用Storyboard
旋轉Visual3D元素,但不幸的是它無法正常工作。
這是代碼片段
public void AnimationRotate(Model model, double duration, double startTime, RepeatBehavior behaviour)
{
//Rotate transform 3D
RotateTransform3D rotateTransform = new RotateTransform3D();
//assign transform to the model
model.Visual3D.Transform = Transform3DHelper.CombineTransform(model.Visual3D.Transform, rotateTransform);
//define the rotation axis
AxisAngleRotation3D rotateAxis = new AxisAngleRotation3D(new Vector3D(0, 0, 1), 180);
//create 3D rotation animation
Rotation3DAnimation rotateAnimation = new Rotation3DAnimation(rotateAxis, TimeSpan.FromSeconds(0.5));
//rotation behaviour
rotateAnimation.RepeatBehavior = behaviour;
//start animation from time
rotateAnimation.BeginTime = TimeSpan.FromSeconds(startTime);
//begin animation - THIS WORKS FINE
// rotateTransform.BeginAnimation(RotateTransform3D.RotationProperty, rotateAnimation);
Storyboard.SetTargetProperty(rotateAnimation, new PropertyPath(RotateTransform3D.RotationProperty));
Storyboard.SetTarget(rotateAnimation, rotateTransform);
//add animation to the storyboard of the model
model.sb.Children.Add(rotateAnimation);
//BUT THIS APPROACH IS NOT WOKRING
model.sb.Begin();
}
代替使用Storyboard.SetTarget
您需要注冊轉換的名稱並調用Storyboard.SetTargetName
。 此外,您必須調用Storyboard.Begin(FrameworkElement)並傳遞帶有適當名稱范圍的FrameworkElement作為參數(此處this
參數)。
RegisterName("RotateTransform", rotateTransform);
Storyboard.SetTargetName(rotateAnimation, "RotateTransform");
...
model.sb.Begin(this);
另外,我猜您需要在某個地方清除情節提要的子級,或者在動畫開始時創建一個新的情節提要。
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