/// <summary>
/// Handles changes to the Interval property.
/// </summary>
/// <param name="d">SprocketControl</param>
/// <param name="e">DependencyProperty changed event arguments</param>
private static void OnIntervalChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
SprocketControl sprocket = (SprocketControl)d;
double oldInterval = (double)e.OldValue;
double newInterval = sprocket.Interval;
sprocket.OnIntervalChanged(oldInterval, newInterval);
}
