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ICO(1)									ICO(1)

NAME
       ico - animate an icosahedron or other polyhedron

SYNOPSIS
       ico  [-display  display]	 [-geometry  geometry]	[-r] [-d pattern] [-i]
       [-dbl] [-faces] [-noedges] [-sleep n] [-obj object] [-objhelp] [-colors
       color-list]

DESCRIPTION
       Ico  displays  a	 wire-frame  rotating  polyhedron,  with  hidden lines
       removed, or a solid-fill polyhedron with hidden faces  removed.	 There
       are  a number of different polyhedra available; adding a new polyhedron
       to the program is quite simple.

OPTIONS
       -r     Display on the root window instead of creating a new window.

       -d pattern
	      Specify a bit pattern for drawing dashed lines for wire frames.

       -i     Use inverted colors for wire frames.

       -dbl   Use double buffering on the display.  This works for either wire
	      frame  or	 solid	fill drawings.	For solid fill drawings, using
	      this switch results in substantially  smoother  movement.	  Note
	      that  this  requires  twice as many bit planes as without double
	      buffering.  Since some colors are typically allocated  by	 other
	      programs, most eight-bit-plane displays will probably be limited
	      to eight colors when using double buffering.

       -faces Draw filled faces instead of wire frames.

       -noedges
	      Don't draw the wire frames.  Typically used only when -faces  is
	      used.

       -sleep n
	      Sleep n seconds between each move of the object.

       -obj object
	      Specify  what  object  to	 draw.	 If no object is specified, an
	      icosahedron is drawn.

       -objhelp
	      Print out a list of the available objects, along	with  informa‐
	      tion about each object.

       -colors color color ...
	      Specify  what  colors should be used to draw the filled faces of
	      the object.  If less colors than faces are given, the colors are
	      reused.

PROGRAM TERMINATION
       Pressing "q" will close a window. If compiled with threads support, the
       program will stop only when all threads terminate. You can  also	 close
       an  animation  window using the ICCCM delete message (depending on your
       window manager, you will have a decoration button or menu to send  such
       message).

ADDING POLYHEDRA
       If  you	have the source to ico, it is very easy to add more polyhedra.
       Each polyhedron is defined in an include file by the name of  objXXX.h,
       where XXX is something related to the name of the polyhedron.  The for‐
       mat of the include file is defined in the file polyinfo.h.  Look at the
       file  objcube.h to see what the exact format of an objXXX.h file should
       be, then create your objXXX.h file in that format.

       After making the new objXXX.h file (or copying in a new one from	 else‐
       where),	simply	do  a  'make  depend'.	 This  will  recreate the file
       allobjs.h, which lists all of the objXXX.h files.  Doing a 'make' after
       this will rebuild ico with the new object information.

SEE ALSO
       X(7)

BUGS
       Pyramids and tetrahedrons with filled faces do not display correctly.

       A  separate  color cell is allocated for each name in the -colors list,
       even when the same name may be specified twice.	Color allocation fails
       in TrueColor displays and option -faces does not work well.

COPYRIGHT
       Copyright 1994 X Consortium
       See X(7) for a full statement of rights and permissions.

X Version 11			   ico 1.0.4				ICO(1)
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