Computer Graphics MCQs with Answers
Practice important Computer Graphics MCQs with answers and explanations.
Multiple Choice Questions
Q271: The scan-line algorithm starts from scan-line = 10 because _______.
- A: The polygon has 10 edges
- B: The initial edge lies there
- C: The lowest y-min is 10
- D: 10 is the default scan-line
View Answer
C
Q272: Which rule is used to toggle the drawing mode in scan-line filling?
- A: Even-odd rule
- B: Clockwise rule
- C: Back-face culling rule
- D: Z-buffer rule
View Answer
A
Q273: Which of the following is NOT required in the active edge table?
- A: Y-max
- B: X value
- C: 1/m
- D: Y-min
View Answer
D
Q274: In scan-line algorithm, when parity changes from even to odd, it means ______.
- A: Start drawing
- B: Stop drawing
- C: Change edge
- D: Delete edge
View Answer
A
Q275: What does reordering in active edge table depend on?
- A: Slope values
- B: X values
- C: Y values
- D: Y-max values
View Answer
B
Q276: The scan-line polygon filling algorithm updates x value using ______.
- A: x1 = x0 + 1/m
- B: x1 = x0 + m
- C: x1 = x0 + y1
- D: y1 = y0 + m
View Answer
A
Q277: During scan-line = 12, what is the x value for index 2 in the active edge table?
- A: 25
- B: 24.4
- C: 26.8
- D: 23.2
View Answer
B
Q278: During scan-line = 13, what is the updated x value for index 1?
- A: 23.2
- B: 24.4
- C: 26
- D: 22.8
View Answer
A
Q279: During scan-line = 14, what is the x value of the third edge in the active edge table?
- A: 25
- B: 27
- C: 28
- D: 26
View Answer
B
Q280: The polygon fill ends when ______.
- A: All scan-lines are processed
- B: All y values are checked
- C: Active edge table is empty
- D: All vertices are used
View Answer
C