$($i$)$ Describe an algorithm for clipping a line against a rectangle. Show that it works using the above three examples $($ii$)$ Describe in detail the Cohen$-$Sutherland algorithm to clip a straight$-$line segment against a rectangle $($iii$)$ Extend the algorithm from part $($i$)$ to clip a line against a three$-$dimensional viewing frustrum. $($iv$)$ Describe how to clip a Bezier curve against a screen rectangle.