Jawaharlal Nehru Technological University Hyderabad 2010-3rd Sem M.C.A -ester Supplementary s y/ust COMPUTER GRAPHICS - Question Paper

Code No: 35
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
MCA-III Semester Supplementary exams July/August 2010
COMPUTER GRAPHICS
Time: 3hours Max.Marks:60
ans any 5 ques.
All ques. carry equal Marks
- - -
1.a) discuss the construction and functioning of cathode ray tube (CRT) display
devices.
b) If the raster system resolution is 640 by 480, how many pixels could be accessed
per 2nd by a display controller that refreshes the screen at a rate of 60 frames
per second?
2.a) Write the algorithm for generalized Bresenham's algorithm suitable for any slope.
b) What data structures are used in the implementation of scan-line algorithms?
Illustrate the scan-line polygon filling algorithm with suitable example.
3.a) Show that the 2 rotation matrices ( ) one R ? and ( ) two R ? are commutative by
showing:
R(?1).R(?2) =R(?2 ).R(?1 )
b) Determine the form of the transformation matrix for a reflection about an arbitrary
line with formula y=mx+b
4.a) Derive the window to view port transformation matrix.
b) discuss with either flow diagram or algorithm the Cohen-Sutherland polygon
clipping method.
5.a) Determine the Bazier blending function for 5 control points. Plot every function
and tag the maximum and minimum values.
b) discuss the steps involved in Phong shading algorithm. What considerations are
to be followed to make the algorithm, time efficient?
6.a) Derive the transformation matrix for aligning an arbitrary axis with z-axis.
b) discuss how the above transformation matrix is helpful for reflecting an object
about an arbitrary plane.
7.a) elaborate the steps involved in depth-buffer method to display visible surfaces.
b) What is the principle followed in area-subdivision algorithm? elaborate its merits
and demerits?
8.a) elaborate the steps involved in the design of an animation sequence. provide a brief
note about every.
b) elaborate the design steps in the simulation of a bouncing ball?

Earning:   Approval pending.