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

Install a private colormap for the window.

-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.

-count integer

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.

-delay microseconds

How much of a delay should be introduced between steps of the animation. Default 100000, or about 0.1 second.

-colors integer

How many colors to use. Default 100.

-animate

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.

-cycle

-no-cycle

Whether to do colormap cycling. Default is to cycle.

-cycle-delay

Number of microseconds between shifts of the colormap; default 100000, or 1/10th second.

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.

X(1), xscreensaver(1)

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 warranty.

Jamie Zawinski <jwz@jwz.org>, 6-jul-93.