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Computer Graphics
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Course Name
BSc IT (Bachelor of Science in Information Technology)
Subject Code BT9301 (Computer Graphics )
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PART - A
PART - B
PART - C
Subject : Computer Graphics
BT9301 : PART - C
| Q. 1 | Consider the edge flag algorithm
Contour outline:
for x+1/2>x intersection to the boundary value
Fill:
For each scan line intersecting the polygon
Inside = _______
for X = 0 (left) to X=Xmax(right)
if the pixel at x is set to t |
| | A) | True, false, set, reset |
| B) | False, true, reset, set | | C) | False, True, set, reset | | D) | True, false, set, set | | | | | Q. 2 | State True or False for raster-scan CRT
a. An electron gun consists of a heater and a
cathode
b. Control electrode is used to regulate the flow
of electrons
c. Focusing electrode is used to control the
direction of electron beam |
| | A) | a-T, b-T, c-F, d-F, e-F |
| B) | a-I, b-F, c-T, d-T, e-F | | C) | a-F, b-I, c-F, d-F, e-T | | D) | a-I, b-F, c-F, d-I, e-T | | | | | Q. 3 | Match the following:-
Set – A
i) Used to create a clear picture
ii) Used to control the direction of the electron
beam
iii) Used to regulate the flow of electrons
Set – B
1. Deflection yoke
2. Electron gun
3. Focusing e |
| | A) | i)-2, ii)-3, iii)-4 |
| B) | i)-3, ii)-4, iii)-2 | | C) | i)-2, ii)-4, iii)-1 | | D) | i)-3, ii)-1, iii)-4 | | | | | Q. 4 | Match the following:-
Set A
i) Projection plane parallel to principal planes
ii) Projection not perpendicular to projection
plane
iii) Projection plane not parallel to principal
plane
Set B
1. Orthographic
2. Axonometri |
| | A) | i)-3, ii)-4, iii)-2 |
| B) | i)-4, ii)-1, iii)-3 | | C) | i)-3, ii)-4, iii)-1 | | D) | i)-2, ii)-4, iii)-1 | | | | | Q. 5 | ______ gives the correct representation of
simple incremental algorithm |
| | A) | position = start
step = increment
1. If position end
end then 2
if position |
| B) | position = start
step = increment
1. If position _ end end then 3
if position| | C) | position = start
step = increment
1. If position_ end end then 2
if position| | D) | position = start
step = increment
1. position=position_step go to 1
2. If position_end
end then 3
if position| | | | | | |
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