TEST 1 CS458

Instructor Dr P Juell    NAID______________________ NAME__________________________

100 points, open book                                  Sep. 26, 2006

1. (10) Draw a figure that would not present a problem to the odd/even line fill routine.
   Draw a figure that would present a problem to the odd/even line fill routine.

2. (10) The active LCD displays have a built in memory for each pixel. That gives them the effect of infinite persistence and yet allows instant change. Give two changes this would permit over the traditional CRT based systems.

3. (10) Bresenham's line algorithm uses the sign of the parametric value to chose between two options. What are the two options?

4. (10) What is the call back system and how is it used.

5. (10) What one fature is this list ordered by: formula, DDA, Bresenham?

6. (10) The programs teatex and teatex2 use texture. What are different in the two textures. (Rember teatex uses a checkboard and teatex2 uses a part of the fractal).

7. (10) The outline of the US is stored in your computer in polyline form. Give a good outcode of this storage.
   Give a problem of this storage.

8. (10) Build a weather glyph for 15knots, 50% coverage, wind from the south west.

9. (10) Two program are displaying a 2D image and a 3D image Give two major diffenences between the two programs.

10. (10) What is changed in an antialiasing system?
    Why is this change done?