I've learnt and work with Unity for over 3 years, and have done some small games. But recently I have found out that all I known about unity's Rect is wrong. I read the document of Rect several times, and all I notice is the figure show me Rect's 4 most important params: x, y, width, height. As you can see on the figure, (x,y) is the top-left point of the rect. So everytime I create a new Rect, I always parse top left point's coordiate as x and y parameters. But I was wrong, (x,y) is actually bottom-left. It's just so embarassing that I don't know that until now. Is there anyone else got confuse like me, or is the document of Rect so confuse ?