Osmania University (OU) 2008 M.Com Accounting and Finance commerce - Question Paper

Code No: 813

FACULTY OF INFORMATICS
M.C.A. II Year I Semester (Main & Backlog) Examination, December 2008

INTERACTIVE COMPUTER GRAPHICS

Time: three Hours] [Max. Marks : 80

ans 1 ques. from every unit.
All ques. carry equal marks.
provide Graphical illustrations wherever necessary.

Unit – I

1. (a) Derive the relevant equations to obtain the points on the circumference of an ellipse.
(b) Using the equations derived above obtain the points on the circumference of a circle
centered at the origin with major and minor axes of six and 4. 10+6


Or

2. (a) Briefly discuss how a CRT is used as a display device.
(b) describe and discuss the terms resolution, aspect ratio, and interlacing as applied to a
display device. 10+6

Unit – II

3. (a) discuss how 2 thick lines segments are connected.
(b) Write the transformation matrix if a point (x , y) is reflected in a line y = 5x + 4.
(c ) define about character attributes. 5+6+5

Or

4. It is needed to create transformation matrices for translation, rotation by an angle
about point to point, scaling relative to a fixed point and reflection about the line y = x.
Derive the improper equations for creating these matrices. 16.


Unit – III

5. (a) Write the Cohen Sutherland out code algorithm for clipping.
(b) Derive the transformation matrix to map a window, with its diagonal points as (2,2)
and (5,6) to a normalized view port with its left bottom at (2,2). 10+6

Or

6. (a) discuss what do you understand by clipping a polygon against a rectangular
windows.
(b) Write down the various steps involved in implementing Weiter Atherton polygon
clipping algorithm. 4+12

Unit – IV

7. (a) What is the formula for a Beizer polynomial with (n + 1) Control points?
(b) List out and discuss the properties of Beizer curves.
(c ) Write brief notes on BSP trees. 4+8+4

Or

8. (a) Write notes on 3 dimensional display devices.
(b) Write notes on fractal geometry methods. 8+8


Unit – V

9. (a) discuss depth buffer method as an algorithm for viewing 3 dimensional objects.
(b) Write detailed notes on Gawrand shading Method. 10+6

Or

10. (a) Derive the 3 dimensional matrix for rotating about the line (1 , one , 0)
(b) discuss 3 dimensional viewing transformations. 8+8


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M.C.A. II Year I Semester (Main & Backlog) Examination, December 2008

Earning:   Approval pending.