void mouseZone_MouseMove(object sender, MouseEventArgs e)
{
if (IsActive)
{
_viewport.Cursor = Cursors.None;
var centerOfViewport = _viewport.PointToScreen(new Point(_viewport.ActualWidth / 2, _viewport.ActualHeight / 2));
var relativePos = e.MouseDevice.GetPosition(_viewport);
var actualRelativePos = new Point(relativePos.X - _viewport.ActualWidth / 2, _viewport.ActualHeight / 2 - relativePos.Y);
var dx = actualRelativePos.X;
var dy = actualRelativePos.Y;
_yaw += dx;
_pitch += dy;
// Rotate
RawRotation = QuaternionHelper.EulerAnglesInDegToQuaternion(_pitch * Sensitivity * 0.1, _yaw * Sensitivity * 0.1, 0);
UpdatePositionAndRotation();
// Set mouse position back to the center of the viewport in screen coordinates
MouseUtilities.SetPosition(centerOfViewport);
}
else
{
_viewport.Cursor = Cursors.Arrow;
}
}