private void slider1_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
 {
     Algorithm Algo = new Algorithm();
     int Target = Algo.DistanceToLens50mm(e.NewValue, LensOffset);
     Messenger.Default.Send<int>(Target, "LensRollingTarget");
     label1.Content = e.NewValue;
 }
 private void btnTrack_Click(object sender, RoutedEventArgs e)
 {
     if (IsTracking)
     {
         Messenger.Default.Register<Double>(this, "Distance", false, m =>
         {
             Algorithm Algo = new Algorithm();
             if (Lens == 1)
             {
                 usbControll.dataSend(Algo.DistanceToLens28mm(m, LensOffset).ToString());
             }
             else
             {
                 usbControll.dataSend(Algo.DistanceToLens50mm(m, LensOffset).ToString());
             }
         });
     }
     else
     {
         MessageBox.Show("拜托,请先按Caliwindows里的Remember键");
     }
 }