/// <summary>
/// Initializes a new instance of the SplineDoubleKeyFrame class with the specified ending value, key time, and KeySpline.
/// </summary>
/// <param name="value">Ending value (also known as "target value") for the key frame.</param>
/// <param name="keyTime">Key time for the key frame. The key time determines when the target value is reached which is also when the key frame ends.</param>
/// <param name="keySpline">KeySpline for the key frame. The KeySpline represents a Bezier curve which defines animation progress of the key frame.</param>
public SplineDoubleKeyFrame(double value, KeyTime keyTime, KeySpline keySpline)
: base(value, keyTime)
{
KeySpline = keySpline;
}
private void ResetNorth( )
{
Storyboard sb = new Storyboard();
sb.Duration = TimeSpan.FromMilliseconds(500.0);
DoubleAnimationUsingKeyFrames frames= new DoubleAnimationUsingKeyFrames();
SplineDoubleKeyFrame frame2 = new SplineDoubleKeyFrame();
frame2.KeyTime = sb.Duration.TimeSpan;
frame2.Value = 0.0;
KeySpline spline = new KeySpline();
spline.ControlPoint1 = new Point(0.0 , 0.1);
spline.ControlPoint2 = new Point(0.1 , 1.0);
frame2.KeySpline = spline;
SplineDoubleKeyFrame frame = frame2;
frames.KeyFrames.Add(frame);
if (this.Map.Angle > 180)
{
frame.Value = 360.0;
}//正转到北
if (this.Map.Angle <= 180)
{
frame.Value = 0.0;
}//转回去
frames.SetValue(Storyboard.TargetPropertyProperty , "Angle");
sb.Children.Add(frames);
Storyboard.SetTarget(frames , this.Map);
sb.Begin();
}
public static CubicBezierEasingFunction CreateCubicBezierEasingFunction(this Compositor compositor, Windows.UI.Xaml.Media.Animation.KeySpline spline)
{
return compositor.CreateCubicBezierEasingFunction(spline);
}
public SplineEasingFunction(KeySpline keySpline)
{
KeySpline = keySpline;
}