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Ruby: OpenGL | GNUT

Posted by anotherfruit (anotherfruit), 21 July 2005
Hi fellow ruby avengers,

I'm pretty new to this programming language and am currently trying to program a tool for visualisation issues using the open gl and gnut lib (among others)

my problem is that i don't 'really' get how those gnut & gl commands (which look like this:

GLUT.DisplayFunc(display);
GLUT.IdleFunc(display);
GLUT.ReshapeFunc(reshape);

or this

display = Proc.new {
  GL.Clear(GL::COLOR_BUFFER_BIT | GL:EPTH_BUFFER_BIT);
  GL.PushMatrix();
.... }

work together with normal ruby-code. don't get me wrong ... i'm already using it but ... because i don't really get it ... so ... i have some software architectural problems.

for example that  (--> display = Proc.new {...) object won't recognize any of my objects that i created in my main loop.

since i like to have reusable code pattern it would be very important to be able to use my objects within the Proc.new {...} part.

but how? perhaps some of you guys can gimme a hint?
brrz. i should probably sleep a bit more. thx in advance for helping an opengl newbie with insomnia.


Posted by admin (Graham Ellis), 27 July 2005
Oh gosh - I've done enough GL in my time (I used to present gl courses on behalf of Silicon Graphics) but that's a bit of a dimmed memory today and was before the days of Ruby.  Anotherfruit - where in the world are you located?  If you happen to be just up the road from us, I wouldn't mind brainstorming it at a laptop one evening after work!  We're in Wiltshire, England



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