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ico - Online in the Cloud

Run ico in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command ico that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator



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 color-list]


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.


-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.

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.

Print out a list of the available objects, along with information about each

-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.


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).


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.

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