The first three lines define a matrix zz
containing values of for values of and
regularly sampled in the interval
.
The fourth line visualizes in a separate window a surface representing
zz2. By click and dragging the mouse in that new window, you should be
able to rotate the object and obtain something as in Figure 1.
displays (Figure 2, left) a checkered surface with
5 squares along the X direction squares that are two facets wide along
the Y direction. This listing can be run with the command vrml_demo_tutorial_1.
Subsequent in this document listings can be called in a similar fashion.