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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 - B
| Q. 1 | Choose the ingredients of the shading
models
i) Properties of intensities
ii) Properties of the surface
iii) Properties of the illumination falling on it |
| | A) | i) and iii) |
| B) | ii) and iii) | | C) | i) and ii) | | D) | i), ii) and iii) | | | | | Q. 2 | Consider the line from (0, 0) to (5, 5) then
applying Bresenham’s Algorithm yields dy =
______ and e = _______ |
| | A) | 5, ½ |
| B) | -5, -½ | | C) | 5, -½ | | D) | -5, ½ | | | | | Q. 3 | Which of the following specifies the process
of scan converting a circle using Bresenham’s
algorithm |
| | A) | If the eight-way symmetry of a circle is used
to generate a circle, points will have to be 90°
to 450 angle |
| B) | If the eight-way symmetry of a circle is used
to generate a circle, moves will be made only in
the positive direction | | C) | If the eight-way symmetry of a circle is used
to generate a circle, points will only have to be
generated through a 90° angle | | D) | If the weight-way symmetry of a circle is
used to be generated a circle, points will only
have to be generated through a 450 angle and
if points are generated from 900 to 450 moves
will be made only in the +x and —y directions | | | | | Q. 4 | _____ gives the correct definition of Edge
fill algorithm |
| | A) | For each scan line intersecting a polygon
edge at (x complement all pixels whose
midpoints lie to the right of(x |
| B) | For each scan line intersecting a polygon
edge at (x complement all pixels whose
midpoints lie to the left of (xi.yi). | | C) | If the intersection is to the left of the fence,
complement all pixels whose midpoint lies to
left or on the intersection of the scan line | | D) | If the intersection is to the right of the
fence, complement all the pixels | | | | | Q. 5 | Find the slop and mid point of the line
P1(-3/2, 1/6) to P2 (1/2, 3/2) |
| | A) | -2/3, (1/2, 5/3) |
| B) | -3/2, (1/2, -5/3) | | C) | -1/2, (1/2 -5/3) | | D) | 2/3, (-1/2, 5/3) | | | |
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