The decayscreen program creates a melting effect by randomly
shifting rectangles around the screen.
The image that it manipulates will be grabbed from the portion of
the screen underlying the window, or from the system's video input,
or from a random file on disk, as indicated by
the grabDesktopImages, grabVideoFrames,
and chooseRandomImages options in the ~/.xscreensaver
for more details.
accepts the following options:
Draw on a newly-created window. This is the default.
Draw on the root window.
If on a color display, pretend we're on a monochrome display.
Install a private colormap for the window.
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.
Slow it down.
The direction in which the image should tend to slide. Legal values are
random (meaning pick one), up, left, right,
down, upleft, downleft, upright, downright,
shuffle (meaning perfer no particular direction), in (meaning
move things toward the center), out (meaning move things away
from the center), melt (meaning melt straight
downward), stretch (meaning stretch the screen downward),
and fuzz (meaning go blurry instead of melty).
to get the default host and display number.
to get the name of a resource file that overrides the global resources
stored in the RESOURCE_MANAGER property.
Copyright 1992 by Vivek Khera. 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