NAME

       xball - bounce balls on the screen

SYNOPSIS

       xball  [  -help  -delay  delay  -gravity  percent-gravity  -elasticity  percent-elasticity
       -itemWidth ball-width -itemHeight ball-height -collide -perpetual -haltSim -demoFile demo-
       file -rgbTxt rgb.txt-file ] [XToolkit options]

DESCRIPTION

       XBall  allows  the  user to create 3-d shaded balls, or to write and run demo which create
       and manipulate the balls in various ways.  Documentation is included on-line via the  Help
       menu and is not reproduced here.

OPTIONS

       Run xball -help for a description of the command line options

DEMOS

       Several  demo  files  are  included  with  the  distribution.   To  run all the demos, run
       'run_demos'.

RESOURCES

       Most resources are available for user modification.  See the XBall app-defaults file for a
       complete listing of widgets,

       Following is a list of the most useful resources:

              XBall*canvas.width, height
                 The default width and height of the window in which balls bounce in.

              XBall.delay
                 The  amount  to  slow  the  simulation,  in  case  the  computer is too fast.  A
                 reasonable range is 0 to 200.

              XBall.itemWidth, itemHeight
                 The default width and height of the balls.

              XBall.collide
                 If true, balls are colliding on startup.

              XBall.perpetual
                 If true, balls are perpetual on startup.

              XBall.haltSim
                 If true, simulation is halted on startup.

              XBall.demoFile
                 Specified the file to run as a demo on startup.

              XBall.rgbTxt
                 Specified the file to load for the colors.  The default file is /etc/X11/rgb.txt

FILES

       /etc/X11/rgb.txt X11 color names and values.

AUTHOR

       David Nedde (daven@ivy.wpi.edu).
       Packaged for the Debian project by Stephen Birch <sgbirch@imsmail.org>.

COPYRIGHT

       Copyright 1991, 1993 David Nedde.
       Permission to use, copy, modify, and distribute this software and  its  documentation  for
       any  purpose  and  without  fee  provided  that  the above copyright notice appears in all
       copies.  It is provided "as is" without express or implied warranty.

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