NAME

       halftone - simple halftone pattern of moving mass points

SYNOPSIS

       halftone   [--display   host:display.screen]   [--visual   visual]   [--window]   [--root]
       [--window-id number] [--count number] [--spacing number]  [--sizefactor  number]  [--delay
       number]  [--minmass  number]  [--maxmass  number]  [--minspeed number] [--maxspeed number]
       [--fps]

DESCRIPTION

       Draws the gravity force in each point on the screen seen through a halftone  dot  pattern.
       The  gravity force is calculated from a set of moving mass points. View it from a distance
       for best effect.

OPTIONS

       --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.

       --window
               Draw on a newly-created window.  This is the default.

       --root  Draw on the root window.

       --window-id number
               Draw on the specified window.

       --count number
               How many mass points to move around. Default: 10

       --spacing number
               Distance between each halftone dot. Default: 14

       --sizefactor number
               How  big each halftone dot should be drawn compared to the spacing value. Default:
               1.5

       --minmass number
               The minimum mass of each mass point. Default: 0.001

       --maxmass number
               The maximum mass of each mass point. Default: 0.02

       --minspeed number
               The minimum speed of each mass point. Default: 0.001

       --maxspeed number
               The maximum speed of each mass  point.  Default:  0.02  --delay  number  Per-frame
               delay, in microseconds.  Default: 10000

       --fps   Display the current frame rate and CPU load.

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.

       XSCREENSAVER_WINDOW
               The window ID to use with --root.

SEE ALSO

       X(1), xscreensaver(1)

COPYRIGHT

       Copyright © 2002 by Peter Jaric. 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

       Peter Jaric