NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
MAY/JUNE 2012 EXAMINATION

COURSE CODE:                                                                              CIT371                                                                

COURSE TITLE:                                                                             Introduction to Computer Graphics and Animation

DURATION:                                                                                     3 Hours

INSTRUCTIONS:                                                                            Answer any Five Questions

Q1a.     What is Computer Graphics?

     b.    Outline any four application areas of computer graphics.

     c.     What do we work with in computer graphics?

     d.    Briefly explain the basic graphics rendering pipeline.

Q2a.     What are BSP trees?

 b.     State the characteristics of a BSP tree.

 c.     Outline the procedure for constructing a BSP tree.

 d.     State an important use of a BSP trees

Q3a.     What do you understand by color model?

     b.    What are complementary colors?

     c.     Distinguish between Greyscale frame buffer and pseudo-color frame buffer.

Q4a.     Define kinematics

     b.    What is kinematics techniques used for?

     c.     Outline the two algorithm types.

Q5a.     Explain what do you understand by ray tracing?

     b.    State the basic ray casting algorithm.

     c.     What can a recursive ray tracer do?

     d.    How do we know if an object is a shadow?

Q6a.     List three basic representation of shape.

     b.    State two advantages and two disadvantages of each of the two opposite shape representation.

     c.     What is spline curve?

     d.    How is the quality of a curve characterized?

Q7a.     What is a matrix?

     b.    How are matrices added?

     c.     Explain matrix inverse and the identity.

     d.    What do you understand by matrix transposition?