NAME jigsaw - permute the screen image like a jigsaw puzzle SYNOPSIS jigsaw [-display host:display.screen] [-background color] [-delay usecs] [-window] [-root] [-install] [-visual visual] DESCRIPTION The jigsaw program takes an image of the screen, carves it up into a jigsaw puzzle, shuffles it, and then solves it. OPTIONS jigsaw accepts the following options: -window Draw on a newly-created window. This is the default. -root Draw on the root window. -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. -delay microseconds How long to wait between shuffling pieces; default 700000, or 0.7 seconds. 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 set- ting 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_MANAGER property. SEE ALSO X(1), xscreensaver(1) COPYRIGHT Copyright O 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 permis- sion 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. AUTHOR Jamie Zawinski <[email protected]>, 25-Nov-97.
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