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Posted By: Bala Member Level: Diamond Posted Date: 18 Dec 2007
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2006 Centre for Development of Advanced Computing(C-DAC) M.C.A MCA-108 Computer Graphics University Question paper
End-Term Examination
Second Semester [MCA] – MAY 2006
Paper Code: MCA-106 Subject: Computer System Architecture
Time: 3 Hours Maximum Marks: 60
Q. 1 Describe the following in brief :- (3 x 5 = 15)
(a) QUADRATIC SURFACES
(b) RGB Color Models.
(c) BSP Tree
(d) Solid Modeling
(e) Principal Vanishing Point
Q. 2 (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 following steps. (Give the coordinates of the square at each 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) Describe B-Splines and their application in detail. (4)
(c) What do you understand by intensity interpolation? Explain Goraud shading.
(5)
SECTION -B
Q. 3 (a) Discuss Bresenham’s Circle Drawing algorithm. Trace the algorithm to
determine first TEN points of the circle x2 + y2 = 25. (6)
b) Discuss Z-Buffer algorithm in detail. (4)
Q. 4 (a) Define Scissoring Process. Describe Cohen-Sutherland Line Clipping
algorithm in details. (6)
(b) Write the empirical model for calculating specular reflection range given in
the Phong Model. (4)
Q. 5 (a) Determine the Bezier Curve with four control points. Discuss the importance
of Bernstein Polynomials. (10)
Q. 6 (a) Discuss Julia Set and Mandelbrot set. (5)
(b) Why are hidden surface algorithm needed? Explain Oct-trees method for
visible surface determination. (5)
Q. 7 (a) What are the applications of fractals in computer generated graphics? (3)
(b) How can sweeps be used for solid modeling? Discuss their limitations and
possible methods to overcome these. (5)
(c) What is Ray Tracing? (2)
Q. 8 (a) How can a 3-D object be viewed by human eyes? Differentiate between
different 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)
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