4. Boundary fill and flood fill algorithm begins with a

A. Fruit B. Leaf C. Picture D. Seed

17. Which statements about the z-buffer approach to rendering are true?

I. selects which fragment to draw based on its depth.

II. orders triangles from back to front.

III. orders triangles based on the average z-values of their vertices

A. I only B. I and II only C. I and III only D. I, II and III

14. According to the Cohen-Sutherland algorithm, where the line lies, if the 4-bit code of both ends is 0000, and also the logical OR gives 0000?

A. Completely inside B. Completely outside C. Half outside half inside

D. None of the above