Re: Optimization question

[Mark Mielke <mark mark mielke cc>]

I highly doubt you will get 10 ms resolution using Perl... :-) The
speed at which Perl evaluates op-codes will probably limit you.

Also, I believe the Perl API is GTK 1.2. The GdkPixbuf API is
GTK 2.0 (1.3). (I think this is correct?)

mark



On Wed, Feb 06, 2002 at 09:49:53AM -0500, Daniel Carrera wrote:
> Thanks.  I am not sure that I completely follow your explanation.  Maybe
> you can help me out.
>
> > Since you are painting numbers, the fastest would be to do a prerendering
> > of all the numbers and store these in GdkPixbuf's in memory.
>
> Who do you do that? I haven't found any documentation on that.  I don't
> know how to do that.
>
> Is this what you mean?:
>
> my $number = Gtk::Gdk::ImlibImage->load_image("7.xpm")
>
> > The conversion of an altitude reading to a number to display would then
> > just need to use a series of gdk_pixbuf_copy_area() to draw each of the
> > numbers.
>
> That looks like C to me.  How would I do that with Perl (or do you think
> that I should do an XS extension?).
>
>
> > Using any kind of external file representation like png, is just a waste
> > of time.
> >
> > You can do the same thing with GdkImlib images, btw, that are currently
> > required for the canvas. You don't need to destroy your objects btw. A
> > simple canvas_image->set("image"->$image) repaints the image, if I'm
> > not mistaken.
> >
> > Regards,
> > Dov
>
>
> Thanks a lot.
> One more question:  Am I missing some documentation from somewhere?  The
> only documentation that I have found consists of a man page
> (Gnome::reference) and the Gtk-Perl home page which has a tutorial and
> sample code.
>
> Is there any other source of documentation?
>
> Thanks again,
> Daniel.
>
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