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halo - draw circular patterns
halo [-display host:display.screen] [-foreground color] [-background
color] [-window] [-root] [-mono] [-install] [-visual visual] [-count
int] [-delay usecs] [-mode seuss | ramp | random ] [-animate] [-colors
integer] [-cycle] [-no-cycle] [-cycle-delay usecs]
The halo program draws cool patterns based on circles.
halo accepts the following options:
-window Draw on a newly-created window. This is the default.
-root Draw on the root window.
-mono If on a color display, pretend we’re on a monochrome display.
Install a private colormap for the window.
Specify which visual to use. Legal values are the name of a
visual class, or the id number (decimal or hex) of a specific
How many circles to draw. Default 0, meaning random.
-mode seuss | ramp | random
In seuss mode, alternating striped curves will be drawn.
In ramp mode, a color ramp will be drawn.
random means pick the mode randomly.
How much of a delay should be introduced between steps of the
animation. Default 100000, or about 0.1 second.
How many colors to use. Default 100.
If specified, then the centerpoints of the circles will bounce
around. Otherwise, the circles will be drawn once, erased, and
a new set of circles will be drawn.
Whether to do colormap cycling. Default is to cycle.
Number of microseconds between shifts of the colormap; default
100000, or 1/10th second.
DISPLAY to get the default host and display number.
to get the name of a resource file that overrides the global
resources stored in the RESOURCE_MANAGER property.
Copyright © 1993 by Jamie Zawinski. Permission to use, copy, modify,
distribute, and sell this software and its documentation for any
purpose is hereby granted without fee, provided that the above
copyright notice appear in all copies and that both that copyright
notice and this permission notice appear in supporting documentation.
No representations are made about the suitability of this software for
any purpose. It is provided "as is" without express or implied
Jamie Zawinski <email@example.com>, 6-jul-93.