sdk/samples/WPFSamples/BezierTimeExample/csharp/splineexample.xaml.cs

   1 using System;
   2 using System.Windows;
   3 using System.Windows.Controls;
   4 using System.Windows.Data;
   5 using System.Windows.Documents;
   6 using System.Windows.Media;
   7 using System.Windows.Media.Animation;
   8 using System.Windows.Navigation;
   9 using System.Windows.Shapes;
  10
  11 namespace Microsoft.Samples.Animation
  12 {
  13
  14     public partial class SplineExample : Page
  15     {
  16         private Point controlPoint1 = new Point(0,100);
  17         private Point controlPoint2 = new Point(0,100);
  18
  19         private void OnSliderChanged (object sender, RoutedEventArgs e)
  20         {
  21
  22
  23
  24             // Retrieve the name of slider.
  25             string name = ((Slider)sender).Name;
  26
  27             RoutedPropertyChangedEventArgs<double> args = e as RoutedPropertyChangedEventArgs<double>;
  28
  29             switch (name)
  30             {
  31                 case "SliderControlPoint1X":
  32                     mySplineKeyFrame.KeySpline.ControlPoint1 = new Point((double)args.NewValue, mySplineKeyFrame.KeySpline.ControlPoint1.Y);
  33                     controlPoint1.X = 100 * (double)args.NewValue;
  34                     break;
  35                 case "SliderControlPoint1Y":
  36                     mySplineKeyFrame.KeySpline.ControlPoint1 = new Point(mySplineKeyFrame.KeySpline.ControlPoint1.X, (double)args.NewValue);
  37                     controlPoint1.Y = 100 - (100 * (double)args.NewValue);
  38                     break;
  39                 case "SliderControlPoint2X":
  40                     mySplineKeyFrame.KeySpline.ControlPoint2 = new Point((double)args.NewValue, mySplineKeyFrame.KeySpline.ControlPoint2.Y);
  41                     controlPoint2.X = 100 * (double)args.NewValue;
  42                     break;
  43                 case "SliderControlPoint2Y":
  44                     mySplineKeyFrame.KeySpline.ControlPoint2 = new Point(mySplineKeyFrame.KeySpline.ControlPoint2.X, (double)args.NewValue);
  45                     controlPoint2.Y = 100 - (100 * (double)args.NewValue);
  46                     break;
  47
  48
  49             }
  50
  51
  52             // Update the animations and illustrations.
  53             myVector3DSplineKeyFrame.KeySpline.ControlPoint1 = mySplineKeyFrame.KeySpline.ControlPoint1;
  54             myVector3DSplineKeyFrame.KeySpline.ControlPoint2 = mySplineKeyFrame.KeySpline.ControlPoint2;
  55
  56
  57             SplineIllustrationSegment.Point1 = controlPoint1;
  58             SplineIllustrationSegment.Point2 = controlPoint2;
  59             SplineControlPoint1Marker.Center = controlPoint1;
  60             SplineControlPoint2Marker.Center = controlPoint2;
  61
  62             keySplineText.Text =
  63                 "KeySpline=\"" + mySplineKeyFrame.KeySpline.ControlPoint1.X.ToString("N") + "," +
  64                 mySplineKeyFrame.KeySpline.ControlPoint1.Y.ToString("N") + " " +
  65                 mySplineKeyFrame.KeySpline.ControlPoint2.X.ToString("N") + "," +
  66                 mySplineKeyFrame.KeySpline.ControlPoint2.Y.ToString("N") + "\"";
  67
  68
  69
  70             // Determine the storyboard's current time.
  71            TimeSpan? oldTime = (TimeSpan)ExampleStoryboard.GetCurrentTime(this);
  72            if (oldTime == null)
  73             oldTime = TimeSpan.FromSeconds(0);
  74
  75            // Generate new clocks for the animations by calling
  76            // the Begin method.
  77            ExampleStoryboard.Begin(this, true);
  78
  79            // Because the storyboard was reset, advance it to its previous
  80            // position using the Seek method.
  81            ExampleStoryboard.Seek(this, (TimeSpan)oldTime, TimeSeekOrigin.BeginTime);
  82         }
  83
  84     }
  85 }