Re: [Texmacs-dev] Scheme interface for the graphical mode

[Giovanni Piredda]

Hi Max,

thanks for the answer. I will continue the post with the code I wrote, 
which is simple and does what I want although it may make graphical 
lists redundant and difficult to read.

For the visibility: does tm-define-macro also define globally-visible 
macros? As I find that using define-graphics, which is defined in 
progs/graphics/graphics-markup.scm with tm-define-macro, gives Unbound 
variable: define-graphics.

Or maybe it is the whole of graphics-markup.scm which is never loaded by 
TeXmacs?

At any rate the answer is that one should not yet use the built-in 
Scheme functions for graphics manipulation (which look like a good 
system of functions to me), so for the post I will use the few functions 
I wrote and say that in TeXmacs a comprehensive set of functions has 
been sketched and partly implemented and documented but it is not yet ready.

G.

On 25.11.20 00:02, Massimiliano Gubinelli wrote:
> Dear Giovanni,
>   procedures declared with tm-define are visible globally, while procedures 
> declared with define are only visible within the module. I think this answers 
> your question.
>
> Of course in the future it is possible to imagine to enhance the module with 
> additional procedures, useful for graphic programming, but for the moment I 
> think would be better to experiment with code external to the main code-base.
>
>
> Max
>
>
>
> > On 24. Nov 2020, at 23:47, Giovanni Piredda <pireddag@posteo.de> wrote:
> >
> > Dear all,
> >
> > I am writing a small blog post for modular graphics and I realized that two out 
> > of the three functions that I wrote for that already exist in TeXmacs (and 
> > maybe the third too ... but I do not know).
> >
> > To orient myself better: what is the status of the functions in 
> > progs/graphics/? Is one expected to be able to use them from Scheme?
> >
> > I tested a few in a Scheme session. Some work ((stree->tree '(rectangle (point 
> > 0 0) (point 1 1))) draws a square), some don't (example: Unbound variable: 
> > enhanced-tree-property-set!), some work differently from how I expect them to.
> >
> > Example for the last case: (enhanced-tree->radical '(with "color" "red" (gr-group (point 1 0) 
> > (point 1 1)))) outputs (with "color" "red" (gr-group (point 1 0) (point 1 1)))
> >
> > A short explanation of the status would help me to rewrite what I have already 
> > written (or to put it in the context of what already exists).
> >
> > As far as I can see, the whole documentation for these functions is in 
> > Help→Scheme extensions→Scheme interface for the graphical mode.
> >
> > Looking forward to some info.
> >
> > Giovanni
> >
> >
> > _______________________________________________
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> > Texmacs-dev@gnu.org
> > https://lists.gnu.org/mailman/listinfo/texmacs-dev
>
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