private void HandleLoaded(object sender, RoutedEventArgs e)
{
const double Offset = Math.PI;
const double Step = Math.PI * 2 / 10.0;
SetPosition(C0, Offset, 0.0, Step);
SetPosition(C1, Offset, 1.0, Step);
SetPosition(C2, Offset, 2.0, Step);
SetPosition(C3, Offset, 3.0, Step);
SetPosition(C4, Offset, 4.0, Step);
SetPosition(C5, Offset, 5.0, Step);
SetPosition(C6, Offset, 6.0, Step);
SetPosition(C7, Offset, 7.0, Step);
SetPosition(C8, Offset, 8.0, Step);
}