WPF,轨迹动画停止不了...

wangchunlei187 2014-02-20 11:06:59

我的代码如下

private Storyboard pathAnimationStoryboard = new Storyboard();

private MatrixAnimationUsingPath matrixAnimation = new MatrixAnimationUsingPath();

private void Begin()

{

Img_dh.RenderTransformOrigin = new Point(0.1, 0.1);

Canvas.SetLeft(Img_dh, -Img_dh.ActualWidth * Img_dh.RenderTransformOrigin.X);

Canvas.SetTop(Img_dh, -Img_dh.ActualHeight * Img_dh.RenderTransformOrigin.Y);

MatrixTransform MatrixTransform_01 = new MatrixTransform();

this.RegisterName("MatrixTransform_01", MatrixTransform_01);

Img_dh.RenderTransform = MatrixTransform_01;

Point centerPt = new Point(75, 76);

ese1.Margin = new Thickness(centerPt.X, centerPt.Y, 0, 0); //指示中心点

Canvas.SetLeft(ese1, -ese1.ActualWidth / 2);

Canvas.SetTop(ese1, -ese1.ActualHeight / 2);

PathGeometry aniPath = new PathGeometry();

EllipseGeometry egStandard = new EllipseGeometry(centerPt, 50, 50);

aniPath.AddGeometry(egStandard);

matrixAnimation.PathGeometry = aniPath; //动画的路径

matrixAnimation.Duration = TimeSpan.FromSeconds(3);

matrixAnimation.RepeatBehavior = RepeatBehavior.Forever;

matrixAnimation.DoesRotateWithTangent = true;

Storyboard.SetTargetName(matrixAnimation, "MatrixTransform_01"); //动画的对象

Storyboard.SetTargetProperty(matrixAnimation, new PropertyPath(MatrixTransform.MatrixProperty));

pathAnimationStoryboard.Children.Add(matrixAnimation);

pathAnimationStoryboard.Begin(this);

}