Re: [Plplot-devel] plimage

[Joao C. <jc...@fe...>]

On Thursday 10 January 2002 3:49 pm, Olof Svensson wrote:
> Joao Cardoso wrote:
> > > The best solution is probably to create a second entry point for
> > > passing an image as a PLFLT * pointer. There are two possibilities,
> > > either by using a flag telling plimage which type of pointer is pas=
sed
> > > (to avoid creation of unused arrays in the case of rectangular imag=
es)
> > > or by creating a new plplot image command.
> >
> > Perhaps the latter will be more user understandable. It could just se=
t a
> > variable in plstrm.h (that could be used  also by drivers), and call =
the
> > standard plimage().
>
> This sounds to us as a good idea - however, just a thought, since
> PLFLT * is used internally by plimage, wouldn't it be better to let the
> current version of plimage call the new function?

Yes, of course.

> (In fact, to be more compatible with PGPLOT

Is PLplot API compatible with PGPLOT? I didn't knew that. I knew that PLp=
lot=20
start after, or was inspired by, PGPLOT.

> the new function should be called plimage and the
> existing one should be renamed, however we have nothing against keeping
> the current version as plimage). Could you suggest a name for the new
> plimage function?

What about "plimage" for the new function and "plimagefe" (front end) for=
 the=20
current one? Or, if compatibility with PGPLOT is not mandatory, "plimages=
"=20
(straight) for the new function? hum, this could be misleading, Pick your=
 own=20
names, I'm not concerned with that.

Yesterday I though that plimage() structure was steady, but today I'm not=
=20
certain of that. It looks like that it is not possible to save a displaye=
d=20
image in another format, opening another device and replaying the plot=20
buffer. (Using the standard plmkstrm/plcpstrm/plreplot/plend1 way of savi=
ng=20
plots).
But the modifications should be minor, so you can start to code your=20
modifications and send a patch.

Bye,
Joao

PS-Did you see the current know bugs of plimage, described in a comment i=
n=20
x20c.c?