Previous Year Paper of Computer Graphics for B.C.A 2010-11 UTU

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B.C.A FIFTH SEMESTER EXAMINATION, 2010-11

PAPER FIRST

COMPUTER GRAPHICS

Time: 3Hrs                                                                                 MM: 70

Note: Attempt any five questions. All questions carry equal marks.

1.(a) Explain refresh cathode ray tube with the help of diagram and write down some advantages and disadvantages.

    (b) List the different input and output components that are typically used with virtual reality system.

2.(a) Describe the steps in DOA line drawing algorithm.

    (b) Explain Bresenham’s the drawing algorithm and used it to find all points on a line drawn between (0,0) and (3,8) in a raster scan    display.

3. (a) What would be the advantages and desadvantages of permitting more than one segments to be open at a time?

     (b) What do you understand by clipping? Explain point clipping and line clipping.

4. (a) Elaborate the step required to fill the polygon using flood fill technique.

     (b) Modify the boundary fill algorithm for a 4-connected region to avoid excessive stacking by incorporating scan line method.

5. (a) Why do we use Bezier methods? Write down all the properties of Bezier curve.

     (b) What do you mean by geometric transformation? Explain translation, rotation and scaling with the help of example.

6. (a) Find out final transformation matrix when point p(x,y) is to be reflected about a line y=mx+c.

     (b) Show how shear transformation may be expressed in term of rotation and scaling.

7. (a) What do you mean by animation? Explain different tools used in animation.

     (b) Write short notes on the following:

       (i) Flat pannel display

       (ii) Morphing

       (iii) Plasma pannel display