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Creating a planetarium using Ruby

[De G. <de...@gm...>]

There is a possibility to create an open project to build a
planetaruim star projector. I have already made some configurations
using Ruby+Debian to enable about 4 screens. Maybe it is not necessary
to use Ruby (because of Xinerama) to accomplish the project, but, the
question is: how many screens can manage Ruby? I think that ~20-30=20
video cards would do the work using projectors instead of monitors for
a planetarium. Can Ruby work with this number of cards? Or, must I to
do it with Xinerama? Has anyone made something like this?

Of course, because of the ceil of a planetarium is not plane but
concave, I'll have to recode some stuff in the drivers or somewhere
else.

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Re: Creating a planetarium using Ruby

[Andrew W. <qw...@gm...>]

On Sat, 11 Mar 2006 2:02 pm, De Gyves wrote:
> There is a possibility to create an open project to build a
> planetaruim star projector. I have already made some configurations
> using Ruby+Debian to enable about 4 screens. Maybe it is not necessary
> to use Ruby (because of Xinerama) to accomplish the project, but, the
> question is: how many screens can manage Ruby? I think that ~20-30
> video cards would do the work using projectors instead of monitors for
> a planetarium. Can Ruby work with this number of cards? Or, must I to
> do it with Xinerama? Has anyone made something like this?
>
> Of course, because of the ceil of a planetarium is not plane but
> concave, I'll have to recode some stuff in the drivers or somewhere
> else.
I don't see what Ruby has to do with this. Ruby allows you to have multiple=
=20
consoles on the same computer, so that multiple users can use it at once.

To join multiple graphics adaptors into a single desktop, use Xinerama. You=
=20
may need to have several computers with a few graphics cards each, in which=
=20
case you can use Xdmx (http://dmx.sourceforge.net/) to join them together=20
with Xinerama as if they were all in the same computer. If you need OpenGL,=
=20
you may want to use Chromium (http://chromium.sourceforge.net/) to do=20
parallel rendering.

=2D-=20
Andrew Walbran
website: http://user.interface.org.nz/~andrew/
blog: http://qwandor.wordpress.com/