public object Convert(object[] values, Type targetType, object parameter,
System.Globalization.CultureInfo culture)
{
double value = (double)values[0];
double minimum = (double)values[1];
double maximum = (double)values[2];
return(RadialSliderHelper.GetAngle(value, maximum, minimum));
}
private void Ellipse_MouseMove(object sender, MouseEventArgs e)
{
if (_isPressed)
{
//Find the parent canvas.
if (_templateCanvas == null)
{
_templateCanvas = RadialSliderHelper.FindParent <Canvas>(e.Source as Ellipse);
if (_templateCanvas == null)
{
return;
}
}
//Canculate the current rotation angle and set the value.
const double RADIUS = 150;
Point newPos = e.GetPosition(_templateCanvas);
double angle = RadialSliderHelper.GetAngleR(newPos, RADIUS);
knob.Value = (knob.Maximum - knob.Minimum) * angle / (2 * Math.PI);
}
}