Re: Binding GL2PS with tolua++

[Ariel Manzur <listas@...>]

On Tue, Feb 28, 2006 at 07:59:33PM -0500, Dean C. Davis wrote:
> Hello,

Hi.

> Lua 5.1, tolua++-1.0.90, Win32 (VC8)
> 
> As my first foray into tolua++, I am attempting to bind GL2PS, the
> "OpenGL to PostScript printing library" available at
> <http://www.geuz.org/gl2ps/> .  I'm stuck at the gl2psBeginPage
> function, which looks like this:
> 
> GLint gl2psBeginPage( const char *title, const char *producer,
>                       GLint viewport[4],
>                       GLint format, GLint sort, GLint options,
>                       GLint colormode, GLint colorsize,
>                       GL2PSrgba *colortable,
>                       GLint nr, GLint ng, GLint nb,
>                       GLint buffersize, FILE *stream,
>                       const char *filename )
> 
> It's the "GL2PSrgba *colortable" and (especially) "FILE *stream" that
> have me scratching my head.  Both are input args.  I can provide a
> partially functional tolua-ized copy of the library's header file...

What is the problem exactly? From what I see, those are the only 2
parameters that aren't basic types.. So you'll need to provide a way to
obtain them from lua, and probably a way to actually 'use' GL2PSrgba. For
FILE* it's easy, you can just add the declaration of fopen to your pkg
(you can even add a default value for de 'mode' parameter :). For
GL2PSrgba, you'll need to declare the struct, and add a constructor (or if
you're on C, add a function that creates one, you'll have to provide
that).

I hope that helps (I don't know if I got the question right).

Ariel.


> 
> Thanks,
> -- 
> Dean.
> 
> 
> 
> 
>