.B webcollage
[\-display \fIhost:display.screen\fP]
[\-root]
+[\-window\-id \fIid\fP]
[\-verbose]
[\-timeout \fIsecs\fP]
[\-delay \fIsecs\fP]
[\-background \fIbg\fP]
[\-no-output]
[\-urls-only]
+[\-imagemap \fIfilename-base\fP]
[\-size \fIWxH\fP]
+[\-opacity \fIratio\fP]
[\-filter \fIcommand\fP]
[\-filter2 \fIcommand\fP]
[\-http\-proxy host[:port]]
[\-dictionary \fIdictionary-file\fP]
[\-driftnet [\fIcmd\fP]]
+[\-directory \fIdir\fP]
+[\-fps]
.SH DESCRIPTION
The \fIwebcollage\fP program pulls random image off of the World Wide Web
and scatters them on the root window. One satisfied customer described it
as "a nonstop pop culture brainbath." This program finds its images by
doing random web searches, and extracting images from the returned pages.
-It places the images on the root window by using the
-.BR giftopnm (1),
-.BR djpeg (1),
-and
-.BR xli (1),
-.BR xv (1),
-or
-.BR xloadimage (1)
-tools.
\fIwebcollage\fP is written in
.BR perl (1)
It will be an order of magnitude faster if you also have
the \fIwebcollage-helper\fP program installed (a GDK/JPEG image
compositor), but \fIwebcollage\fP works without it as well.
+
+\fIwebcollage\fP can be used in conjunction with the
+.BR driftnet (1)
+program (the Unix equivalent of EtherPEG) to snoop images from traffic
+on your local subnet, instead of getting images from search engines.
.SH OPTIONS
.I webcollage
accepts the following options:
.TP 8
.B \-root
-Draw on the root window. This option is manditory, if output is being
+Draw on the root window. This option is mandatory, if output is being
produced: drawing to a window other than the root window is not yet
supported.
+
+Images are placed on the root window by using one of the
+.BR xscreensaver-getimage (1),
+.BR chbg (1),
+.BR xv (1),
+.BR xli (1),
+or
+.BR xloadimage (1)
+programs (whichever is available.)
+.TP 8
+.B \-window\-id \fIid\fP
+Draw to the indicated window instead; this only works if the
+.BR xscreensaver-getimage (1)
+program is installed.
.TP 8
.B \-verbose \fRor\fP \-v
Print diagnostics to stderr. Multiple \fI-v\fP switches increase the
the name of a PPM file.
.TP 8
.B \-size \fIWxH\fP
-Normally, the output image will be made to be the size of the screen.
-This lets you specify the desired size.
+Normally, the output image will be made to be the size of the
+screen (or target window.) This lets you specify the desired size.
+.TP 8
+.B \-opacity \fIratio\fP
+How transparently to paste the images together, with 0.0 meaning
+"completely transparent" and 1.0 meaning "opaque." Default 0.85.
+A value of around 0.3 will produce an interestingly blurry image
+after a while.
.TP 8
.B \-no-output
If this option is specified, then no composite output image will be
If this option is specified, then no composite output image will be
generated: instead, a list of image URLs will be printed on stdout.
.TP 8
+.B \-imagemap \fIfilename-base\fP
+If this option is specified, then instead of writing an image to the
+root window, two files will be created: "\fIbase\fP.html" and "\fIbase\fP.jpg".
+The JPEG will be the collage; the HTML file will include that image, and
+an image-map making the sub-images be linked to the pages on which they
+were found (just like \fIhttps://www.jwz.org/webcollage/\fP.)
+.TP 8
.B \-filter \fIcommand\fP
Filter all source images through this command. The command must take
a PPM file on stdin, and write a new PPM file to stdout. One good
Webcollage normally looks at the system's default spell-check dictionary
to generate words to feed into the search engines. You can specify an
alternate dictionary with this option.
+
+Note that by default, webcollage searches for images using several
+different methods, not all of which involve dictionary words, so
+using a "topical" dictionary file will not, in itself, be as effective
+as you might be hoping.
.TP 8
.B \-driftnet \fI[ args ]\fP
.BR driftnet (1)
the \fIdriftnet\fP program requires root access, so you'll have
to make \fIdriftnet\fP be setuid-root for this to work.
Please exercise caution.
+.TP 8
+.B \-directory \fIdir\fP
+Instead of searching the web for images, use the contents of
+the given directory.
+.TP 8
+.B \-fps
+Display the current frame rate and CPU load (MacOS only).
.SH ENVIRONMENT
.PP
.TP 8
.B http_proxy\fR or \fPHTTP_PROXY
to get the default HTTP proxy host and port.
.SH FILES AND URLS
-.TP
-.I /usr/dict/words \fRor\fP /usr/share/lib/dict/words \fRor\fP /usr/share/dict/words
-To find the random words to feed to search engines.
-.PP
-.I http://random.yahoo.com/bin/ryl, http://image.altavista.com/
-To find random web pages.
-.SH BUGS
-When drawing on the root window, it always uses the default colormap.
-This is actually a limitation of xv. But regardless, when using this
-program with xscreensaver, it must be given the \fBdefault-n\fP
-visual specification (see the
-.BR xscreensaver (1)
-manual for more details.)
+.I /usr/dict/words,
+.I /usr/share/lib/dict/words,\fP
+or
+.I /usr/share/dict/words
+to find the random words to feed to certain search engines.
-Animating GIFs are not supported.
+ \fIhttp://www.altavista.com/image/randomlink\fP,
+ \fIhttp://random.yahoo.com/fast/ryl\fP,
+ \fIhttp://www.livejournal.com/stats/latest-img.bml\fP, and
+ \fIhttp://www.google.com/\fP
+to find random web pages.
+.SH BOOBIES
+The Internet being what it is, absolutely anything might show up in the
+collage including -- quite possibly -- pornography, or even nudity.
+.SH BUGS
+Animating GIFs are not supported: only the first frame will be used.
+.SH UPGRADES
+The latest version of webcollage can be found as a part of
+xscreensaver, at
+.B https://www.jwz.org/xscreensaver/,
+or on the WebCollage page at
+.B https://www.jwz.org/webcollage/.
-Too many of the images that it finds are text, not pictures. This is
-because most of the web is pictures of text. Which is pretty sad.
+DriftNet:
+.B http://www.ex-parrot.com/~chris/driftnet/
.SH SEE ALSO
.BR X (1),
.BR xscreensaver (1),
.BR cjpeg (1),
.BR xdpyinfo (1),
.BR perl (1),
-.BR vidwhacker (1),
+.BR vidwhacker (MANSUFFIX),
.BR dadadodo (1),
.BR driftnet (1)
+.BR EtherPEG ,
+.BR EtherPeek
.SH COPYRIGHT
-Copyright \(co 1998-2002 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
+Copyright \(co 1998-2005 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 permission notice
-appear in supporting documentation. No representations are made about the
+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.
.SH AUTHOR
-Jamie Zawinski <jwz@jwz.org>, 24-May-98.
+Jamie Zawinski <jwz@jwz.org>, 24-May-1998.
projects / xscreensaver / blobdiff