KK Wagh Polytechnic

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14 Δεκ 2013 (πριν από 4 χρόνια και 10 μήνες)

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K. K. Wagh Polytechnic, Nashik


Academic Year (2011
-
2012)


12112


Scheme:
E








Course

Code
: CM

Subject

:

Computer Graphics









Semester:
Fourth


Marks

: 100










Time

: 3

H
ou
r
s
.








Instructions to Candidates:

1.

All questions are compulsory.

2.

Illustrate your answers with neat sketches/flowchart wherever necessary.

3.

Figures to the right indicate full marks of respective

question

4.

Assume suitable additional data, if necessary.


Q.

1:

Attempt any
TEN

of the following






(10X2=20)

a)

Draw a labeled diagram of shadow mask CRT.

b)

Define view
-
port. Define Window.

c)

Define following:

i. Fractal.

ii. Interpolation.

d)

State
any two disadvantages of generating arc using DDA algorithm.

e)

What are the different types of 2D transformations applied to an object


f)

List four hazards of graphics standard.

g)

Define two types of the polygon and give example of each.


h)

What are the algorithms

used for filling the polygon?

i)

Define 2D Scaling.

j)

What are the drawbacks of beam penetration CRT?

k)

Write down homogenous coordinate matrix for :

-

2D Reflection

-

2D Shearing

l)


State any four application of Open GL.


Q. 2: Attempt any
FOUR of the
following






(4X4=16)

a)

Explain the working principles of Direct View Storage Tube with neat diagram.

b)

Write C code for Bresenham’s line drawing algorithm

c)

Explain homogeneous coordinates

d)

What are the advantages of midpoint subdivision line clipping
algorithm over Cohen


Sutherland line clipping algorithm? Which is faster? Illustrate it.

e)

Write a short note on 2D shearing.(x and y shear).

f)

Explain any four design rules of GUI.


Q. 3: Attempt any
FOUR of the following







(
4X4=16)

a)

Describe dis
play file and its structure.

b)

Explain Cohen


Sutherland line clipping algorithm with appropriate example.

c)

Describe Hilbert’s curve with suitable example.

d)

Explain DDA arc generation algorithm.

e)

Demonstrate with example inside outside test for polygon.

f)

State the design purpose of:

a) VDI

b) CGM


Q. 4: Attempt any FOUR of the following






(4X4=16)

a)

Illustrate the working principles of CRT with appropriate diagram.

b)

Find out the final co
-
ordinates of a figure bounded by the co
-
ordinates (1,1), (
3,4), (5,7) and
(10,3) when scaled by two units in X direction and three unit in Y direction.

c)

Define and explain normalization transformation and workstation transformation.

d)

Describe the blending function for cubic Bezier curves.

e)

State the need of adopting

graphics standard and list any four graphics standards available.

f)

Describe flood fill algorithm for filling the polygon.


Q. 5: Attempt any FOUR of the following






(4X4=16)

a)

List any eight application

of computer graphics. And explain any one of them.

b)

Write Algorithm for drawing circle using mid point circle generation algorithm.

c)

Find out final coordinates of triangle A(0, 0), B(5, 5), C(10, 0) when rotated 45° in counter
clockwise direction about arbi
trary point x(1, 1)

d)

Explain 2d rotation about arbitrary point

e)

Describe fractal and give any two examples of fractal.

f)

State advantages and disadvantages of raster scan and random scan

display.


Q. 6: Attempt any TWO of the f
ollowing






(8
X2
=16)

a)


Explain w
hy graphics standards are required? State any five graphics standards and explain
any one of them.

b)

Explain GIF file format briefly. And
l
ist any two advantages and two disadvantages of GIF file
format.

c)

Describe Sutherland
-
Hodgman polygon clipping

algorithm.