Provided by: xscreensaver-data-extra_4.23-4ubuntu8_i386 bug


       goop - squishy transparent oil and bubble screenhack


       goop  [-display  host:display.screen]  [-foreground color] [-background
       color]  [-window]   [-root]   [-mono]   [-install]   [-visual   visual]
       [-transparent]  [-non-transparent]  [-additive]  [-subtractive]  [-xor]


       The goop program draws a simulation of bubbles in layers of overlapping
       multicolored translucent fluid.


       goop 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 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

       -count integer
               How many bubbles to draw per layer.  Default: random.

       -layers integer
               How  many  layers  to  draw.   Default: random, based on screen

       -delay microseconds
               How much of a delay should be introduced between steps  of  the
               animation.  Default 100000, or about 1/10th second.

               If  -layers is greater than 1, then each layer will be drawn in
               one color, and when they overlap, the  colors  will  be  mixed.
               This is the default.

               Turns off -transparent.

               If  -transparent  is specified, then this option means that the
               colors will be mixed using an additive color model, as  if  the
               blobs were projected light.  This is the default.

               If  -transparent  is specified, then this option means that the
               colors will be mixed using a subtractive color model, as if the
               blobs were translucent filters.

       -xor    Draw with xor instead of the other color tricks.


       DISPLAY to get the default host and display number.

               to  get  the  name of a resource file that overrides the global
               resources stored in the RESOURCE_MANAGER property.


       X(1), xscreensaver(1)


       Copyright © 1997 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 suitability of this software for
       any purpose.  It  is  provided  "as  is"  without  express  or  implied


       Jamie Zawinski <>, 11-Jun-97.