COMPUTER GRAPHICS JNTU previous years question papers

COMPUTER GRAPHICS JNTU previous years question papers

Time: 3 hours

Max Marks: 80

Answer any FIVE Questions

All Questions carry equal marks

1. Write about the following:
(a) Sutherland-Hodgman clipping
(b) Cohen-suther land clipping. [10+6]

2. (a) Explain with neat diagram, the working of DVST.
(b) Using the mid point ellipse algorithm, explain how the ellipses are drawn.[6+10]

3. Find the normalization transformation that maps a window whose lower left corner is at (1,1) and upper right corner is at (3,5) onto
(a) a view port that is the entire normalized device screen and
(b) a view port that has the lower left corner at (0,0) and upper right corner at (1/2,1/2). [16]

4. Explain window to view port transformation. Derive the transformation matrro. [16]

5. (a) Write the general form of the matrix for rotation about a point P (h, k) (10)
(b) Perform a 450 rotation of triangle A (0,0), B (1,1), C (5,2).
i. About the origin
ii. About the point P (-1, -1) [10+3+3]

6. Explain about the following:
(a) B-spline method
(b) Raster graphics architecture. [8+8]

7. (a) Explain the basic conepts of hidden surfaces and line removal methods with suitable examples.
(b) Write about z-bu ers. [10+6]

8. (a) Write the tranformation matrix to rotate a point (x,y,z) about Z axis through an angle q in the clockwise direction.
(b) Explain about di erent projection in 3-D . [8+8]

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