Question Paper: Computer Graphics : Question Paper May 2016 - Computer Engineering (Semester 6) | Gujarat Technological University (GTU)
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## Computer Graphics - May 2016

### Computer Engineering (Semester 6)

TOTAL MARKS: 100
TOTAL TIME: 3 HOURS
(1) Question 1 is compulsory.
(2) Attempt any four from the remaining questions.
(3) Assume data wherever required.
(4) Figures to the right indicate full marks.
1 (a) Explain the working of CRT in detail.(7 marks) 1 (b) (i) Explain Beam Penetration method.(3 marks) 1 (b) (ii) Compare Raster Scan system and Random Scan System.(4 marks) 2 (a) Explain DDA line drawing algorithm with its advantages and disadvantages.(7 marks)

### Solve any one question from Q2(b) & Q2(c)

2 (b) Explain Scan line fill algorithm. What is the use of active edge list and edge table?(7 marks) 2 (c) List the techniques used for inside-outside test of points and explain any one method in detail.(7 marks)

### Solve any two question from Q3(a), Q3(b) & Q3(c), Q3(d)

3 (a) Define Clipping. Write and explain Cohen-Sutherland line clipping algorithm.(7 marks) 3 (b) Write a short note on 2D shearing along with X-direction and Y-direction.(7 marks) 3 (c) Explain Sutherland-Hodgeman polygon clipping algorithm.(7 marks) 3 (d) Perform 45° rotation of a triangle A(0,0), B(1,1) and C(5,2). Find transformed coordinates after rotation,
(7 marks)

### Solve any two question from Q4(a), Q4(b) & Q4(c), Q4(d)

4 (a) What is Bezier Curve? Define properties of Bezier Curve.(7 marks) 4 (b) Derive the transformation matrix for 3D rotation about a line parallel to principle Axis.(7 marks) 4 (c) Show that Two dimensional reflection through X-axis followed by two dimensional reflection through line Y= -X, is equivalent to Pure rotation about origin by 270°.(7 marks) 4 (d) Explain 3D reflection with respect to selected axis and selected plane.(7 marks)

### Solve any two question from Q5(a), Q5(b) & Q5(c), Q5(d)

5 (a) Write a short note on Back face detection method.(7 marks) 5 (b) Explain RGB color model.(7 marks) 5 (c) What is Parallel Projection? Explain types of Parallel Projection in detail.(7 marks) 5 (d) Explain CMY color model.(7 marks)