[NTG-context] Re: multipage metapost output from ConTeXt

[fv leung <fvleung@gmail.com>]

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You didn't specify the color of path A in p2 and p4. So it's drawn in black.
The other issue, I can't help.

Emanuel Han via ntg-context <ntg-context@ntg.nl> 於 2023年12月2日 週六 下午7:23寫道：

> So is there a way to circumvent these issues? Or an explanation for this
> behavior, so that I can try to find a solution by myself?
>
> Thanks
> Emanuel
>
> On Nov. 29 2023, at 12:25 pm, Emanuel Han via ntg-context <
> ntg-context@ntg.nl> wrote:
>
> Dear Aditya and Fabrice,
> thanks for your responses.
>
> I included some of Fabrice's code into mine for testing purpose, and
> indeed the multipage works now.
> What is bizarre is that issues appear now that didn't appear before:
>
>    - Path A is drawn with color red on page 1, and in color black on all
>    following pages, while it should stay red.
>    - textext(<text>, <pair>) is overwriting <text> with
>    "T="&decimal(currentime) which has been used previously  in textext()
>    before the for k=1 endfor loop. This overwriting happens only for the first
>    textext() which occurs inside the for k=1 endfor loop. All other textext()
>    inside the for k=1 endfor loop are not drawn at all. If the line  « draw
>    textext("T="&decimal(currentime)) scaled 2 shifted(0,2in) withcolor magenta
>    ; » is commented out, the first textext() inside the for k=1 endfor loop is
>    not drawn neither. It must be an issue with textext(), because when I
>    replace textext() by lmt_outline[], the text is drawn.
>
> Adjusted mwe:
>
> \enableregime[utf] % enable unicoded input
>
> \definefontfamily [RomanFont] [rm] [calluna]
>
> \definefontfamily [KoreanFont] [rm] [applemyungjo]
>
> \definefontfamily [JapaneseFont] [rm] [hannotatesc]
>
> \definefontfeature
>  [fea]
>  [mode=node,language=dflt,script=arab,
>   init=yes,
>   medi=yes,
>   fina=yes,
>   isol=yes,
>   calt=yes,
>   rlig=yes,
>   tlig=yes,
>   trep=yes,
>   curs=yes,
>   kern=yes,
>   mark=yes
> ]
>
> \starttypescript [serif] [notonaskharabic]
>  \definefontsynonym [notonaskharabic-Light]
> [name:notonaskharabic]        [features=fea]
>  \definefontsynonym [notonaskharabic-Bold]
> [name:notonaskharabic]        [features=fea]
>  \definefontsynonym [notonaskharabic-Italic]
> [name:notonaskharabic]        [features=fea]
>  \definefontsynonym [notonaskharabic-Bold-Italic]
> [name:notonaskharabic]        [features=fea]
> \stoptypescript
>
> \starttypescript [serif] [notonaskharabic]
>  \usetypescript[serif][fallback]
>  \definefontsynonym [Serif]
> [notonaskharabic-Light]       [features=fea]
>  \definefontsynonym [SerifItalic]
> [notonaskharabic-Italic]      [features=fea]
>  \definefontsynonym [SerifBold]
> [notonaskharabic-Bold]        [features=fea]
>  \definefontsynonym [SerifBoldItalic]
> [notonaskharabic-Bold-Italic] [features=fea]
> \stoptypescript
>
> \starttypescript [notonaskharabic]
>   \definetypeface [notonaskharabic] [rm] [serif] [notonaskharabic]
> [default]
> \stoptypescript
>
> \usetypescript[notonaskharabic]
>
> \setupbodyfont [RomanFont]
>
> \usecolors[crayola]
>
> \startMPinclusions
>
> picture p[];
>  path TheFrame ;
>  TheFrame := fullsquare scaled 5in ;
>
>  z0 = (0,0);
>  z1 = (60,40);
>  z2 = (40,90);
>  z3 = (10,70);
>  z4 = (30,50);
>  z5 = (90,70);
>  z6 = (-10,70);
>
> path A; A = z0..z1..z2..z3..z4 ;
> pair AStartPoint; AStartPoint = point 0 of A;
> pair AEndPoint; AEndPoint = point 4 of A;
> path B; B =  z5..z6;
> pair BStartPoint; BStartPoint = point 0 of B;
> pair BEndPoint; BEndPoint = point 1 of B;
> path C; C = AStartPoint..AEndPoint;
>
> p1:=image(
>     draw A withcolor red;
> );
>
> p2:=image(draw A; label(lmt_outline [
> text = "\JapaneseFont 日本語"
>     ], AEndPoint););
>
> p3:=image(
>     label(textext("\notonaskharabic \textdir TRT دانگ") scaled 1.2,
> BStartPoint);
> );
>
> p4:=image(draw A; label(lmt_outline [
> text = "\KoreanFont 한국어"
>     ], AStartPoint););
>
> p5:=image(
>     label(textext("bāng"), BEndPoint);
>     draw C withcolor green;
> );
>
> p6:=image(
>     draw B withcolor blue;
> );
> \stopMPinclusions
>
> \starttext
>
> \dorecurse{6}{ % Frame
>  \setupMPpage[background=color, backgroundcolor=SpringGreen]
> \startMPpage[pagestate=start]
>  currentime := #1 ;
>  % Just for learning :
>  draw TheFrame withpen pencircle scaled .1in withcolor magenta ;
>  draw textext("T="&decimal(currentime)) scaled 2 shifted(0,2in) withcolor
> magenta ;
>  for k=1 upto currentime: draw p[k]; endfor
>  setbounds currentpicture to TheFrame ;
>
>  desiredformat := 1080;% In pixels (will be converted by default at 72dpi)
>  currentpicture := currentpicture xysized (desiredformat ,desiredformat );
>
> \stopMPpage
> }
>
> \stoptext
> On Nov. 27 2023, at 11:25 pm, Aditya Mahajan <adityam@umich.edu> wrote:
>
> On Mon, 27 Nov 2023, Fabrice L wrote:
>
> > Hi,
> >
> > It is fun fact very easy to do. You just use \startMPpage (…)
> \stopMPpage multiple times. Here is an example which build an animation of
> a particle moving according to a Brownian motion.
>
> A very similar option is to pass a variable to a metapost drawing. This is
> what I use:
>
> https://adityam.github.io/context-blog/post/metapost-animation/
>
> It only works when viewed in acrobat, you can just comment out the
> animation part and wrap it in \startTEXpage .. \stopTEXpage to get
> multi-page animation.
>
>
> Aditya___________________________________________________________________________________
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>
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>
> ___________________________________________________________________________________
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive : https://github.com/contextgarden/context
> wiki : https://wiki.contextgarden.net
>
> ___________________________________________________________________________________
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive  : https://github.com/contextgarden/context
> wiki     : https://wiki.contextgarden.net
>
> ___________________________________________________________________________________
>

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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________