XScreenSaver(r)                                   XScreenSaver(r)



NAME
       zoom - wander around magified desktop

SYNOPSIS
       zoom  [-display  host:display.screen]  [-foreground color]
       [-background color] [-window] [-root]  [-mono]  [-install]
       [-visual  visual] [-delay usecs] [-lenses] [-pixwidth pix-
       els] [-pixheight pixels] [-pixspacex  pixels]  [-pixspacey
       pixels] [-lensoffsetx pixels] [-lensoffsety pixels]

DESCRIPTION
       The zoom program takes an image, magnifies it, and scrolls
       around it, fatbits-style.

       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  file;
       see xscreensaver-demo(o) for more details.

OPTIONS
       zoom 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.

       -delay microseconds
               Slow it down.

       -lenses Instead  of  doing  magnification  we just copy an
               offset  region  from  the  original   image.    If
               lensoffsetx  < pixwidth (and similarly for Y) then
               consecutive  regions  will  overlap,  giving   the
               effect of looking through an array of lenses.

       -pixwidth pixels
               Width of the magnified pixels.

       -pixheight pixels
               Height of the magnified pixels.

       -pixspacex pixels
               Amount  of black space between magnified pixels (X
               direction).

       -pixspacey pixels
               Amount of black space between magnified pixels  (Y
               direction).

       -lensoffsetx pixels
               Distance  in X direction between consective copied
               regions (only effective when -lenses used).

       -lensoffsety pixels
               Distance in Y direction between consective  copied
               regions (only effective when -lenses used).


       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(X),   xscreensaver(r),   xscreensaver-demo(o),  xscreen-
       saver-getimage(e)

COPYRIGHT
       Copyright (C) 2000 by James Macnicol.  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 implied warranty.

AUTHOR
       James      Macnicol       <james.macnicol@mailexcite.com>,
       20-Nov-2000.   Much  code  was shamelessly stolen from the
       spotlight hack and a few others.




X Version 11               20-Nov-2000            XScreenSaver(r)