CS 2401 / CS 71 - COMPUTER GRAPHICS NOVEMBER/DECEMBER 2012.

B.E. / B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2012.

Seventh Semester

Computer Science and Engineering

CS 2401 / CS 71 - COMPUTER GRAPHICS

(Regulation 2008)

Time: Three hours Maximum: 100 marks

Answer ALL questions

PART A - (10 x 2 = 20 marks)

1. Write down the shear transformation matrix.

2. Define text clipping.

3. Differentiate oblique and orthogonal projections.

4. Define spline curves.

5. State the difference between CMY and HSV color models.

6. What are keyframe systems?

7. What is a shadow?

8. Define texture.

9. List down the properties of piano curves.

10. Write down some of the Boolean operations on objects.

PART B - (5 x 16 = 80 marks)

11.(i) Line drawing algorithm. (8)

(ii) Line clipping algorithm. (8)

Or

 (b) With suitable examples, explain the following

(i) Rotational transformation. (8)

(ii) Curve clipping algorithm. (8)

12. (a) (i) Differentiate parallel and perspective (8)

(ii) Write notes on 3D viewing. (8)

Or

 (b) (i) With suitable examples, explain the 3D transformations. (8)

(ii) Write notes on quadric surfaces. (8)

13. (a) (i) Explain RGB color model in detail. (8)

(ii) Explain how 3D scenes are drawn. (8)

Or

 (b) (i) Discuss the computer animation techniques. (10)

(ii) Explain how 3D objects are drawn. (6)

14. (a) Differentiate flat and smooth shading models. (16)

Or

 (b) Discuss the methods to draw and add shadows to objects. (16)

15. (a) Write notes on the following

 (i) Mandelbrot sets (8)

(ii) Julia sets. (8)

Or

 (b) (i) Describe the creation of images by iterated functions. (8)

(ii) Explain the method for adding surface texture. (8)