XScreenSaver(1)

NAME
       slip - sucks your screen into a jet engine

SYNOPSIS
       slip  [-display  host:display.screen]  [-foreground color]
       [-background color] [-window] [-root]  [-mono]  [-install]
       [-visual  visual] [-ncolors integer] [-iterations integer]
       [-points integer] [-delay microseconds] [-delay2 microsec-
       onds]

DESCRIPTION
       The  slip  program  does  lots  of blits and chews up your
       screen image.

OPTIONS
       slip 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.

       -ncolors integer
               How many colors  should  be  used  (if  possible).
               Default  128.   The  colors used cycle through the
               hue, making N stops around the color wheel.

       -count integer
               How many whooziwhatsis to generate.  Default 35.

       -cycles integer
               How long to frobnicate.  Default 50.

       -delay microseconds
               How long we should wait between drawing each step.
               Default 50000, or about 1/20th second.

RESOURCES
       On  some systems (currently, only SGIs), this program can,
       instead of grabbing a desktop image, grab a frame of video
       from  an external camera and manipulate that instead.  The
       following resources control that.

       grabVideoProbability (Float)
               What portion of the time to grab video rather than
               a  screen image, between 0.0 and 1.0.  Defaults to
               0.5, or half the time.

       videoDevice (Integer)
               The number of the default video  input  device  to
               check  first.   If unspecified, the default camera
               (from videopanel(1)) will be checked first.  After
               that, all other available video input devices will
               be checked in order.
               The first one which  produces  a  non-black  image
               will be used.  If all images are black, the others
               will be re-checked a few times  before  giving  up
               and  falling  back  to  simply  grabbing a desktop
               image (but note that this takes a few seconds,  so
               if  you  don't  actually  have  any  video sources
               hooked up, you should consider turning  off  video
               grabbing  by setting grabVideoProbability to 0.0.)

       videoGain (Float)
               The amount by which to brighten the grabbed image.
               This defaults to 2.2.

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_MAN-
               AGER property.

SEE ALSO
       X(1) xscreensaver(1) xlock(1) 

COPYRIGHT
       Copyright (C) 1992 by Scott Draves.

       Permission to use, copy, modify, and distribute this soft-
       ware and its documentation for any purpose and without fee
       is  hereby  granted,  provided  that  the  above copyright
       notice appear in all copies and that both  that  copyright
       notice  and  this  permission  notice appear in supporting
       documentation.

AUTHOR
       Scott Graves lt;spot@cs.cmu.edu.

       Ability to run standalone or with  xscreensaver  added  by
       Jamie Zawinski lt;jwz@netscape.com, 18-Oct-93.