Hi Hans, Thank you very much for the new features! I haven't yet read all the mag-1104-mkiv.pdf where you explain some of them, but after modifying one of your examples, I noticed that some funtions get a strange graph, which is probably due to the fact that metafun2 is interpolating between points in a way which is not correct. For instance, in the following example (which is a slight modification of yours), the curve drawn is not a graph, in the sense that for some values of x it seems to be two or more values of y.
How does metafun 2 traces the curve between two discretization points?
Best regards: OK
%%% begin draw-2.tex
\starttext
\startMPcode{doublefun}
draw lmt_function [
xmin = 1.0, xmax = 2.5066283, xstep = .1,
ymin = -2, ymax = 2,
% xticks = "bottom", xsmall = 80, xlarge = 20,
% yticks = "left", ysmall = 40, ylarge = 4,
code = "1.5 * math.sin(2*x^2)",
xlabels = "yes",
ylabels = "yes",
ycaption = "\strut\tfd \rotate[rotation=90]{vertical}",
xcaption = "\strut\tfd horizontal",
pointsymbol = "dot", pointsize = 4, pointcolor = "orange",
sx = 2mm, sy = 4mm, linewidth = .025mm, offset = .1mm,
]
xsized 8cm ;
\stopMPcode
\stoptext
%%% end draw-2.tex
draw-2.pdf
Description: Adobe PDF document
> On 14 Aug 2019, at 11:54, Hans Hagen <j.ha...@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/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 > ----------------------------------------------------------------- > ___________________________________________________________________________________ > If your question is of interest to others as well, please add an entry to the > Wiki! > > maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context > webpage : http://www.pragma-ade.nl / http://context.aanhet.net > archive : https://bitbucket.org/phg/context-mirror/commits/ > wiki : http://contextgarden.net > ___________________________________________________________________________________
___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___________________________________________________________________________________
