starfish - radially-symmetric throbbing colormap-hacking graphics demo
Contents
Copyright
Copyright © 1997 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.
Description
The starfish program draws radially symmetric objects, which expand, contract, rotate, and turn inside
out. It uses these shapes to lay down a field of smooth colors, and then rotates the colormap.
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.
XSCREENSAVER_WINDOW
The window ID to use with --root.
Name
starfish - radially-symmetric throbbing colormap-hacking graphics demo
Options
starfish accepts the following options:
--window
Draw on a newly-created window. This is the default.
--root Draw on the root window.
--window-idnumber
Draw on the specified window.
--mono If on a color display, pretend we're on a monochrome display.
--install
Install a private colormap for the window.
--visualvisual
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.
--delaymicroseconds
How much of a delay should be introduced between steps of the animation. Default 10000, or about
1/100th second.
--thicknesspixels
How wide each color band should be. Default 0, meaning random (the chosen value will be between
0 and 15.)
--rotationdegrees
How quickly the objects should rotate at each step. Default 0, meaning random (the chosen value
will be between 0 and 12 degrees.)
--colorsint
How many colors to use. Default 200. The more colors, the smoother the transitions will be, and
the nicer the resultant images.
--durationseconds
How long to run before choosing a new shape. Default 30 seconds.
--delay2seconds
When duration expires, how long to wait before starting a new run. Default 5 seconds.
--blob--no-blob
If blob option is specified, then the raw shapes will be shown, instead of a field of colors
generated from them.
--fps Display the current frame rate and CPU load.
See Also
X(1), xscreensaver(1)
Synopsis
starfish [--display host:display.screen] [--foreground color] [--background color] [--window] [--root]
[--window-id number][--mono] [--install] [--visual visual] [--delay usecs] [--delay2 secs] [--thickness
pixels] [--rotation degrees] [--duration seconds] [--colors int] [--blob] [--no-blob] [--fps]
