[NTG-context] metafun 2

Henri Menke henrimenke at gmail.com
Wed Aug 14 12:18:19 CEST 2019


Dear Hans,

I just wanted to ask, will LMTX and MetaFun remain valid implementations
of TeX and MetaPost or do we have to expect incompatibilities?

Cheers, Henri

On 14/08/19 9:54 PM, Hans Hagen 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/magazines/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 
> ConTeXt LMTX here. For instance,
> 
>      draw lmt_outline [
>          content       = "hello",
>          kind          = "reverse",
>          fillcolor     = "darkred",
>          drawcolor     = "darkblue",
>          rulethickness = 1/2,
>      ] 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:
> 
>      draw lmt_followtext [
>          content = "How well does it work {\bf 1}! ",
>          path    = (fullcircle scaled 4cm),
>          trace   = true,
>          spread  = true,
>      ] ysized 5cm ;
> 
> which is an easier interface to text along a curve. Arrows can be drawn 
> with
> 
>      draw lmt_arrow [
>          kind        = "draw",
>          location    = "middle",
>          alternative = "curved",
>          path        = fullcircle
>              scaled  3cm
>              shifted (3.5cm,0cm),
>      ] 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.
> 
> So the question is: What do you miss in metapost support? Of course it 
> should fit within the concept, so 'artistic freehand drawings' is not 
> something that is likely to get interfaced. We are particularly 
> interested in educational applications, if only because ConTeXt started 
> out that way.
> 
> Hans
> 
> 
> 
> -----------------------------------------------------------------
>                                            Hans Hagen | PRAGMA ADE
>                Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>         tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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