-.TH XScreenSaver 1 "24-Nov-97" "X Version 11"
+.TH XScreenSaver 1 "05-Apr-1999" "X Version 11"
.SH NAME
decayscreen - make a screen meltdown.
.SH SYNOPSIS
.B decayscreen
-[\-display \fIhost:display.screen\fP] [\-window] [\-root] [\-mono] [\-install] [\-visual \fIvisual\fP] [\-delay \fIusecs\fP] [\-mode \fImode\fP]
+[\-display \fIhost:display.screen\fP] [\-window] [\-root] [\-mono] [\-install]
+[\-visual \fIvisual\fP] [\-delay \fIusecs\fP] [\-mode \fImode\fP]
.SH DESCRIPTION
The \fIdecayscreen\fP 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 \fIgrabDesktopImages\fP, \fIgrabVideoFrames\fP,
+and \fIchooseRandomImages\fP options in the \fI~/.xscreensaver\fP
+file; see
+.BR xscreensaver-demo (1)
+for more details.
.SH OPTIONS
.I decayscreen
accepts the following options:
The direction in which the image should tend to slide. Legal values are
\fIrandom\fP (meaning pick one), \fIup\fP, \fIleft\fP, \fIright\fP,
\fIdown\fP, \fIupleft\fP, \fIdownleft\fP, \fIupright\fP, \fIdownright\fP,
-\fIshuffle\fP (meaning perfer no particular direction), \fIin\fP (meaning
-move things toward the center), and \fIout\fP (meaing move things away
-from the center).
-.SH 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.
-.PP
-.TP 8
-.B grabVideoProbability \fR(Float)\fP
-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.
-.TP 8
-.B videoDevice \fR(Integer)\fP
-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
-\fBgrabVideoProbability\fP to 0.0.)
-.TP 8
-.B videoGain \fR(Float)\fP
-The amount by which to brighten the grabbed image. This defaults to 2.2.
+\fIshuffle\fP (meaning prefer no particular direction), \fIin\fP (meaning
+move things toward the center), \fIout\fP (meaning move things away
+from the center), \fImelt\fP (meaning melt straight
+downward), \fIstretch\fP (meaning stretch the screen downward),
+and \fIfuzz\fP (meaning go blurry instead of melty).
.SH ENVIRONMENT
.PP
.TP 8
to get the name of a resource file that overrides the global resources
stored in the RESOURCE_MANAGER property.
.SH "SEE ALSO"
-X(1),
-xscreensaver(1)
+.BR X (1),
+.BR xscreensaver (1),
+.BR xscreensaver\-demo (1),
+.BR xscreensaver\-getimage (1)
.SH COPYRIGHT
Copyright 1992 by Vivek Khera. Permission to use, copy, modify, distribute,
and sell this software and its documentation for any purpose is hereby granted
implied warranty.
.SH AUTHOR
Vivek Khera <khera@cs.duke.edu>, 05-Aug-93; based on code by David Wald, 1988.
-Modified by jwz, 28-Nov-97.
+Modified by jwz, 28-Nov-1997.
+Modified by Rick Schultz <rick@skapunx.net> 05-Apr-1999.
+Modified by Vince Levey <vincel@vincel.org> 25-Oct-2001.
projects / xscreensaver / blobdiff