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B. Tech. (sEM. V) (ODD SEM.) TrrEoRY EXAMINATION, 2OI4-15 COMPUTER GRAPHICS Time : 2 Hours]

[Total Marks : 50

Attempt any two parts of the following : (2x6=12) (a) Differentiate between Random and Raster scan system with example. (b) WriteDDAalgorithmforline dra*ing Rasterized the line between the points (20, l0) and (30, lg) by using the same.

(c) 2

E4plain the working of colour CRT by using delta shadow mask method.

Attempt any two parts of the following

(a)

:

(2x7=14)

Write Liange Barsky atgorithm for Line Clipping. Use Liange Barsky line clipping algorithm io,fip

the line pt(-15,-30; to fi1:0,60) against thl window having diagonally opposite corners as (0,0) and (15,15). 1r0s04l

I Contd...

r (b)

Explain concaveandconvex polygonswithproper example. Discuss Sutherland-Hodgeman polygon

Elipping algorithm by all possible cases.

G)

Rotate a triangle at A (0,0), 450 about

0 fii)

B(l,l),

C(5,2) by

:

Origin (0,0) Point P(-I,-l). Find new coordinates ofthe rotated figute

Attempt any two parts of the following

(a)

Find the coordinates

:

(2x6=12)

of a pyramid whose

coordinates are 4(0,0,0), B(1,0,0), C(0, 1,0) and

D(0,0,1) after mirror reflection with respect to the plane passing through the origin and having the

normalvectorN:r+j+j'

O)

What is Projection ? Derive oblique parallel projection and perspective projection matrices.

(c)

Derive a general form of 3D rotation about

G) (i) 110s041

:

X-a:
Z-ais I Contd...

Attempt any two parts ot.the following

(a)

:

(2xGl2)

What is the importance ofhidden line and surfacg Femoval algorithm ? Discuss the mechanism

of

Z-butr€r zurfrce removal algorithm and differentiate

it withA-buffer surface removal algorithm.

(b)

Specrfy the significance. of continuity conditions.

Discuss parametric continuiry conditions and differentiate it'with geometric continurty conditions.

(c)

ll0s041

Explain diffirse reflection and Gouraud model.

3

16675

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