This Java applet illustrates a threedimensional graphics example: a rotating
wireframe cube. Four classes are necessary. Here is the source code for each.

xyzpoint.java: to represent a point in three
dimensional space
 xyzline.java:
to represent a line connecting two points in three dimensional space
 wirefr.java:
to represent a wireframe object as an array of xyzline objects
 cube.java:
to display a rotating wireframe cube
(adapted from Java Programming
the Easy Way, Douglas Downing, Barron's Educational Series)
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