On Wed, Aug 14, 2019 at 11:55 AM Hans Hag= en <j.hagen@xs4all.nl> wrote= :

Hi,

In the process of providing an additional (more abstract) interface to
some of the old and also new MetaFun code we wonder what kind of
features users would like to see.

http://www.pragma-ade.com/general/magaz= ines/mag-1104-mkiv.pdf

As a teaser I uploaded a MyWay document that shows some of what is
coming. All is experimental but it shows the direction. We're talking <= br> ConTeXt LMTX here. For instance,

=C2=A0 =C2=A0 =C2=A0draw lmt_outline [
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0content=C2=A0 =C2=A0 =C2=A0 =C2=A0=3D &qu= ot;hello",
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0kind=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =3D "reverse",
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0fillcolor=C2=A0 =C2=A0 =C2=A0=3D "da= rkred",
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0drawcolor=C2=A0 =C2=A0 =C2=A0=3D "da= rkblue",
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0rulethickness =3D 1/2,
=C2=A0 =C2=A0 =C2=A0] ysized h shifted (3.75h,-1.25h) ;

Wraps all the outline drawing in one macro with a set of options (there will be xml interface definitions for that). Or take:

=C2=A0 =C2=A0 =C2=A0draw lmt_followtext [
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0content =3D "How well does it work {= \bf 1}! ",
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0path=C2=A0 =C2=A0 =3D (fullcircle scaled = 4cm),
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0trace=C2=A0 =C2=A0=3D true,
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0spread=C2=A0 =3D true,
=C2=A0 =C2=A0 =C2=A0] ysized 5cm ;

which is an easier interface to text along a curve. Arrows can be drawn with

=C2=A0 =C2=A0 =C2=A0draw lmt_arrow [
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0kind=C2=A0 =C2=A0 =C2=A0 =C2=A0 =3D "= ;draw",
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0location=C2=A0 =C2=A0 =3D "middle&qu= ot;,
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0alternative =3D "curved",
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0path=C2=A0 =C2=A0 =C2=A0 =C2=A0 =3D fullc= ircle
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0scaled=C2=A0 3cm
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0shifted (3.5cm,0cm),
=C2=A0 =C2=A0 =C2=A0] withcolor "darkblue" ;

but of course the low level interface with its many variables for
tweaking stays around. Other examples are shown in the mentioned document.<= br>
So the question is: What do you miss in metapost support? Of course it
should fit within the concept, so 'artistic freehand drawings' is n= ot
something that is likely to get interfaced. We are particularly
interested in educational applications, if only because ConTeXt started out that way.

Hans

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=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Ridderstraat 27 | 80= 61 GH Hasselt | The Netherlands
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Hi,

t= his looks very promising!!

Since you ask for featu= re requests:

1) 3d support. This is of course a ve= ry big request, but it would also be useful for many people.

2) A= bout graphing, it would be nice to be able to do contour polots and density= plots. I know I asked for contour plots some time ago, and there were some= examples, but I don't think there was ever some built in support for i= t. Maybe that can be done "easy" with help of lua? I guess there = exist good algorithms.

3) (small) The possibility to have arrows = in coordinate axes. I have not had the possibility to test the new features= today, and maybe this is already built in (drawarrow?), but I mention it s= ince I did not see it in the pdf.

Again, it is ver= y nice that you work on extending MetaPost/MetaFun further!!

/Mikael=C2=A0