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**Anna University Chennai**

**B.Tech Computer Science Information Technology/ B.Tech Information Technology**

**B.E/B.Tech DEGREE EXAMINATION, NOVEMBER/ Dec 2012,**

**CS2401 COMPUTER GRAPHICS ,**

**REGULATION 2008**

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**PART A**

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 key frame systems?

7.What is a shadow?

8.Define texture.

9.List down the properties of piano curves.

10.Write down some of boolean operations on objects.

**PART B**

11.a.Explain the following

i.Line Drawing algorithm.

ii.Line clipping algorithm.

or

b.With suitable examples, explain the following

i.Rotational transformation.

ii.Curve Clipping Algorithm.

12.a.i.Differentiate parallel and perspective projections.

ii.Write notes on 3D viewing.

or

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

ii.Write notes on quadratic surfaces.

13.a.i.Explain RGB color model in detail.

ii.Explain how 3D scenes are drawn.

or

b.i.Discuss the computer animation techniques.

ii.Explain how 3D objects are drawn.

14.a.Differentiate flat and smooth shading models.

or

b.Discuss the methods to draw and add shadow to objects.

15.a.i.Mandelbrot sets.

ii.Julia sets.

or

b.i.Describe the creation of images by iterated functions.

ii.Explain the method for adding surface textures.

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