ICO(1)              X Version 11 (Release 4)               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.




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       -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
            information 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.

  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 format 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 elsewhere), 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(1)

  BUGS



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       A separate color cell is allocated for each name in the
       -colors list, even when the same name may be specified
       twice.

  COPYRIGHT
       Copyright 1988, Massachusetts Institute of Technology.
       See X(1) for a full statement of rights and permissions.



































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