NAME

ifs - draws spinning, colliding iterated-function-system images

SYNOPSIS

ifs [--display host:display.screen] [--visual visual] [--window] [--root] [--window-id number] [--no-db] [--delay number] [--detail number] [--colors number] [--functions number] [--iterate | --recurse] [--no-rotate] [--no-scale] [--no-translate] [--fps]

DESCRIPTION

The ifs program draws spinning, colliding iterated-function-system images.

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.

--window-id number

Draw on the specified window.

--no-db

Disable double-buffering.

--delay number

Per-frame delay, in microseconds. Default: 20000

--colors number

Number of colours to use. Default: 200

--detail number

In --iterate mode, number of times to randomly iterate the functions, in thousands. In --recurse mode, number of times to apply functions (recursion depth) before drawing each point. Default: 9

--functions number

Number of functions to be iterated. Default: 3

--iterate

Calculate by iteratively applying the functions in a random order, usually faster than --recurse. This is the default.

--recurse

Calculate by recursively applying all combinations of the functions. This is the historical behavior and may produce neater output than --iterate.

--no-rotate

Disable the rotation component of the functions.

--no-scale

Disable the scaling component of the functions.

--no-translate

Disable the varying translation component of the functions.

--no-multi

Turn off multi-coloured mode, only one colour is used to colour the whole set.

--fps

Display the current frame rate and CPU load.

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.

SEE ALSO

X(1), xscreensaver(1), ifs(6x)

COPYRIGHT

Copyright © Chris Le Sueur and Robby Griffin, 2005-2006

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

AUTHOR

This version by Chris Le Sueur <thefishface@gmail.com>, Feb 2005 Many improvements by Robby Griffin <rmg@terc.edu>, Mar 2006