[HOpenGL] hopengl links

[Sven Panne]

On Thursday 22 February 2007 13:02, Jamin A. Ohmoto-Frederick wrote:
> Regarding Chris' post -
>
> I ran into a lot of problems too since there are old
> versions of HOpenGL and corresponding examples
> floating around out there with differing advice, such
> as at http://www.haskell.org/HOpenGL/.  I'm not sure
> why it hasn't been updated since it's off of the main
> haskell.org.

I admit being guilty here of not upating that site for a very long time. My 
amount of time I can work on HOpenGL varies quite a bit depending on my Real 
Life (tm) ;-), I think it might be a good idea to move the stuff to the 
Haskell Wiki, so it is easier to keep things up-to-date, integrate more 
examples/tutorials/etc.  I'll think about that...

> There are some sites that include a lot of Red Book
> examples that should just compile and work with the
> method I gave (such as ghc --make Planet.hs).  Anyone
> know a reason why some tutorials use the -package GLUT
> option?

The OpenGL/GLUT packages are exposed by default, so there is no need to 
specify them explicitly, unless you are manually compiling and linking. This 
is explained in detail at:

http://www.haskell.org/ghc/docs/latest/html/users_guide/packages.html#using-packages

So the easiest way to use all OpenGL/GLUT stuff is importing Graphics.UI.GLUT 
and using "ghc --make". A single import, no special options...

> Try some of these links:
>
> This should have the newer examples (can anyone tell
> me if there are any better sites than this?)
> http://cvs.haskell.org/cgi-bin/cvsweb.cgi/~checkout~/fptools/libraries/GLUT
>/examples/RedBook/ [...]

The OpenGL/GLUT packages are now under darcs control instead of CVS, so the 
latest and greatest examples are available at:

   http://darcs.haskell.org/packages/GLUT/examples/

If you use Hugs, it may already ship with all the examples, e.g. at:

   /usr/lib/hugs/demos/GLUT

Cheers,
   S.