halo(1)

halo1

Draw circular patterns

Usage

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]

Overview

The halo program draws cool patterns based on circles.

Options

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.

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.

Releases

4 releases since Debian 2.0 (Hamm); the text changed 1 time.

  1. 2.0
  2. 2.1–3.0

Author

Jamie Zawinski <[email protected]>, 6-jul-93.

From xscreensaver 3.34-3 in Debian 3.0 (Woody). Parsed by carta from the page's man source.