Comp Graph Dec 2002

CSE-307-C MaximwlI Marks: 100

resolution is 1280 x 1024 and aspect ratio is 1, what is

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display processor. Explain its various'

2. (a) Make the basic architecture of a raster graphic system with

of 50 frames per second. 4

a raster system of resolution 680 x 420 and a refresh rate

(c) Calculate the time spent in scanning each row of pixels in

diameter of each screen pt. 4

(b) A video monitor has 12" x 9.6" display area. If the

3x4=12

__ .\dix}npUl~ a = (0 'x) 1n'0 = (1 '~) 0 = (l'0) n

(iii) Joy stick.

(ii) Light Pen

Digitizers

1. (a) Explain in brief about following devices (i)

Note: Attempt any five questions. All questions ... cany equal marks.

Time allowed: 3 hours

COMPUTER GRAPHICS Paper-

December-2002

B. E. (Computer Science) Vth Semester Examination, .

542

overcome it.

(b) Describe aliasing. Describe the methods used to

explain with example.

(a) Describe spline curves. How these curves are useful,

10

10

5 .

8

s

(iv) tex!.c1i

(iii) curve clipping

(ii) area clipping

line clipping

(b) Describe the following types of clipping: (i)

viewport with suitable example.

(a) Describe the difference between a window and

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8

(c) Rotate a line (4, 8) - (8, 6) about the pt. (6,2) by 60°. 6

rectangle. (shear force is applied in X direction).

(b) Explain the application of shear transformation on a

rotation in 2D). 6

(R (8) is the transformation matrix for anticlockwise

R (8,) . R (82) = R (8., + 82)

to obtain

concatinating the matrix representation R (8,) and R (8)

4. (a) Show that the composition of two rotations is additive by

.).

"

(2 )

3+3+4=10

10

10

formed with polygon surfaces.

(b) Describe anyone method for illuminating an object

with example. 10

10

steps involved in computer animation design? Explain

8. (:1) Write a short note on computer animation. What are various

removal.

(b) Describe area subdivision method for hidden surface

and write their equ. in parametric form. 10 7. (a) Define BSP tree (Binary Space Partitioning tree) for determining object visi bili ty.

(b) Describe quadric surfaces. Take any two quadric surfaces

xy plane (z = 0).

(iii) to see the parallel projection 0{ an object in

.. (ii) scale z to ~, x by hand y by 3.

(i) shift 4 unit in x, 6 units in y,..,... 4 units in z direction

matrix for the following transformations:

6. (a) Write the three dimensional homogeneous transformation

(3)