ico - animate an icosahedron or other polyhedron
ico [-display display] [-geometry geometry] [-r] [-d pattern] [-i] [-dbl]
[-faces] [-noedges] [-sleep n] [-obj object] [-objhelp] [-colors
-r Display on the root window instead of creating a new window.
Specify a bit pattern for drawing dashed lines for wire frames.
-i Use inverted colors for wire frames.
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
Draw filled faces instead of wire frames.
Do not draw the wire frames. Typically used only when -faces is used.
Sleep n seconds between each move of the object.
Specify what object to draw. If no object is specified, an icosahedron
Print out a list of the available objects, along with information about
-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.
The ico command 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.
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 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.
The root window is not refreshed after ico -r exits; the last-displayed ico
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.
Copyright 1988, X Consortium
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