If you are running a browser which supports Java, then you can
use your mouse to interact with the applet above.Move the mouse
horizontally and vertically to change the image. X and Y control
two different parameters. This was an experiment with a method
used to produce Arabic/Islamic star tiling patterns, from an
underlying grid of polygons. Starting with an underlying grid of
polygons, the star pattern is produced by drawing lines from two
equidistant points on each polygon edge at some fixed angle
(controlled by the mouse). At the point where the lines would
intersect with other lines, they are clipped. Y controls the
distance from the center of the polygon edge. X controls angle.