private void Polygon_MouseMove(object sender, MouseEventArgs e)
{
if (_isPressed)
{
//Find the parent canvas.
if (_templateCanvas == null)
{
_templateCanvas = CameraHeadingHelper.FindParent <Canvas>(e.Source as Ellipse);
if (_templateCanvas == null)
{
return;
}
}
//Calculate the current rotation angle and set the value.
Point newPos = e.GetPosition(_templateCanvas);
double angle = CameraHeadingHelper.GetAngleR(newPos, RADIUS);
CameraHeadingControl.Value = (CameraHeadingControl.Maximum - CameraHeadingControl.Minimum) * angle / (2 * Math.PI);
}
}
