Draws the gravity force in each point on the screen seen through a
halftone dot pattern. The gravity force is calculated from a set of
moving mass points. View it from a distance for best effect.
OPTIONS
-visual visual
Specify which visual to use. Legal values are the name of a visual class,
or the id number (decimal or hex) of a specific visual.
-window
Draw on a newly-created window. This is the default.
-root
Draw on the root window.
-count number
How many mass points to move around. Default: 10
-spacing number
Distance between each halftone dot. Default: 14
-sizefactor number
How big each halftone dot should be drawn compared to the spacing value. Default: 1.5
-minmass number
The minimum mass of each mass point. Default: 0.001
-maxmass number
The maximum mass of each mass point. Default: 0.02
-minspeed number
The minimum speed of each mass point. Default: 0.001
-maxspeed number
The maximum speed of each mass point. Default: 0.02
-delay number Per-frame delay, in microseconds. Default: 10000
ENVIRONMENT
DISPLAY
to get the default host and display number.
XENVIRONMENT
to get the name of a resource file that overrides the global resources
stored in the RESOURCE_MANAGER property.
