// forward drag event to the view controller as "pan" events
public override void MouseDragged(NSEvent theEvent)
{
if (theEvent.ModifierFlags == NSEventModifierMask.AlternateKeyMask)
{
var p = ConvertPointFromView(theEvent.LocationInWindow, null);
GameViewController.TiltCamera(new CGPoint(p.X - ClickLocation.X, p.Y - ClickLocation.Y));
}
else
{
GameViewController.HandlePan(ConvertPointFromView(theEvent.LocationInWindow, null));
}
base.MouseDragged(theEvent);
}