Centre for Development of Advanced Computing(C-DAC) 2006 M.C.A -108 Computer Graphics - Question Paper

End-Term exam
Second Semester [MCA] – MAY 2006

Paper Code: MCA-106 Subject: Computer System Architecture
Time: three Hours Maximum Marks: 60

Q. one define the subsequent in brief :- (3 x five = 15)
(a) QUADRATIC SURFACES
(b) RGB Color Models.
(c) BSP Tree
(d) Solid Modeling
(e) Principal Vanishing Point

Q. two (a) What is the advantage of using homogenous coordinates? Consider the square
(0,0), (0,2), (2,0), (2,2). Perform a composite transformation of the square by using
the subsequent steps. (Give the coordinates of the square at every intermediate steps.)
(i) Scale by using Sx =2 and Sy =3.
(ii) Rotate of 450 in the anticlockwise direction.
(iii) Translate by using Tx =3 and Ty =5. (6)
(b) define B-Splines and their application in detail. (4)
(c) What do you understand by intensity interpolation? discuss Goraud shading.
(5)

part -B

Q. three (a) explain Bresenham’s Circle Drawing algorithm. Trace the algorithm to
determine 1st TEN points of the circle x2 + y2 = 25. (6)
b) explain Z-Buffer algorithm in detail. (4)

Q. four (a) describe Scissoring Process. define Cohen-Sutherland Line Clipping
algorithm in details. (6)
(b) Write the empirical model for calculating specular reflection range provided in
the Phong Model. (4)

Q. five (a) Determine the Bezier Curve with 4 control points. explain the importance
of Bernstein Polynomials. (10)

Q. six (a) explain Julia Set and Mandelbrot set. (5)
(b) Why are hidden surface algorithm needed? discuss Oct-trees method for
visible surface determination. (5)

Q. seven (a) elaborate the applications of fractals in computer generated graphics? (3)
(b) How can sweeps be used for solid modeling? explain their limitations and
possible methods to overcome these. (5)
(c) What is Ray Tracing? (2)

Q. eight (a) How can a 3-D object be viewed by human eyes? Differentiate ranging from
various method? (4)
(b) If you were an architect and needed to determine the dimensions of an object,
which projection would you use and why? Classify these projections.(6)

Earning:   Approval pending.