Computer Science 102
                               Quiz J      Name ______________________

1. Suppose the dimensions of a finite plane are (12, 8) in (x, y) world
   coordinates and that rothit = (9, 4, 0).  Suppose the finite plane
   is textured.  What relative coordinate values should be passed to
   get_texel(). (Assume stretch to fit mode here).

   relx =                              rely =




2. Suppose a texture has dimension (800, 400) in (x, y) pixel coordinates
   and get_texel() is passed relative offset values of (0.3, 0.4).  What
   are the (x, y) coordinates of the target texel in pixel coordinates
   (Ignore the upside down issue here).

   pixx =                              pixy =




3. Suppose an image of dimension (800, 600) is to be created and that
   the x and y dimension of the screen in world coordinates is 16 x 12
   what is the size of a pixel in world coordinates






4. Suppose pixel size in world coordinates is 0.01 and that rothit
   = (4, 3, 0).   Suppose the TILED texture has pixel dimensions
   (50, 40).  What are the (x, y) coordinates of the target texel
   in pixel coordinates. (Ignore the upside down issue here).