ico(1X)ico(1X)NAMEico - animate an icosahedron or other polyhedron
SYNOPSISico [-display display] [-geometry geometry] [-r] [-d pattern] [-i]
[-dbl] [-faces] [-noedges] [-sleep n] [-obj object] [-objhelp] [-colors
color-list]
OPTIONS
Display on the root window instead of creating a new window. Specify a
bit pattern for drawing dashed lines for wire frames. 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 buffering. 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 is drawn. Print out
a list of the available objects, along with information about each
object. 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.
DESCRIPTION
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 poly‐
hedron to the program is quite simple.
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 polyhe‐
dron. The format of the include file is defined in the file <poly‐
info.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.
BUGS
The root window is not refreshed after ico-r exits; the last-displayed
ico pattern remains.
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
Copyright 1988, X Consortium
See X(1X) for a full statement of rights and permissions.
SEE ALSOX(1X)ico(1X)
