CS3500 Computer Graphics
			      Spring 2009

			   Home Assignment 7
				Clipping
			  Due: March 24, 2009
			   Start of the class

1. A clip rectangle has corners (10, 5) and (80, 65). Draw the picture
   and show the nine regions with their outcodes used by the
   Cohen-Sutherland algorithm.

2. Clip the following line segments to the above clip rectangle using
   the Cohen-Sutherland algorithm. Show the steps and intermediate
   points clearly.
   (a) (0, 45) to (80, 45)
   (b) (0, 0) to (55, 95)
   (c) (20, 100) to (50, 30)
   (d) (0, 140) to (90, 0)

3. Use Sutherland-Hodgman algorithm to clip the following 8 sided
   polygon to the rectangle with corners (3, 4) and (13, 11). Show the
   broad steps.
   (9, 2), (9, 6), (15, 6), (15, 9), (11, 9), (11, 13), (7, 13), (7, 2)