NAME

       halftone - simple halftone pattern of moving mass points

SYNOPSIS

       halftone [-display host:display.screen] [-visual visual] [-window] [-root] [-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.

       -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.

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