Re: wait_for_file ??

[Shai Ayal]

On Thu, Sep 9, 2010 at 6:33 AM, Michael D Godfrey
<address@hidden> wrote:
> On 09/08/2010 06:26 PM, Ben Abbott wrote:
>
> I think jwe's suggestion of drawing to a piped gs rather than to a
>> file is the way to go. I'll try to implement the gl2ps part.
>>
>> Shai
>
> For gnuplot backend, the gnuplot eps file can be save to a tmp-file which
> can then be converted via the pipe.
>
> However, for the opengl backends, the pipe approach will limit the formats
> to those available from gl2ps and those available from gs (pdf, ps, ps2, and
> many the bitmaps and printer languages). Am I correct?
>
> Output formatted as dxf, emf, fig, hpgl, ai, pstex, mf, etc (all formats
> derived using pstoedit and fig2dev will no longer be available for opengl
> backends? .... If so I think it best to avoid using pstoedit, fig2dev, and
> epstool.
>
> Should the "-tight" option will need to go as well?
>
> As my questions indicate, I'm a bit cloudy on the implications. I'll be
> studying this approach for a while and plan to wait on Shai before
> contributing any significant changes.
>
> Ben
>
>
>
> This sounded good to me at first, but now I do not see how it is going to
> work.
> There must be something that ensures that routine glps_renderer::draw in
> gl2ps-renderer.cc
> really gets run when the code in __fltk_print__.m needs it.
>
> I hope Shai and Ben have this figured out.
>
> Michael

I think using a pipe will not make the render code run when we need
it, but at least it will make sure that gs is only called when the
data to convert is ready.

Shai