ico
animate an icosahedron or other polyhedron
see also :
X
Synopsis
ico
[-display display] [-geometry geometry] [-r] [-d pattern]
[-i] [-dbl] [-faces] [-noedges] [-sleep n] [-obj object]
[-objhelp] [-colors color-list]
add an example, a script, a trick and tips
examples
no example yet ...
... Feel free to add your own example above to help other Linux-lovers !
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 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.
copyright
Copyright 1994 X Consortium
See X(7) for a full statement of rights and permissions.
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).
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.
see also
X