* Delivering the value of a variable in MetaFun to ConTeXt
[not found] <mailman.1186.1624441651.1130.ntg-context@ntg.nl>
@ 2021-06-23 20:00 ` Jeong Dal
2021-06-23 20:36 ` Hans Hagen
0 siblings, 1 reply; 6+ messages in thread
From: Jeong Dal @ 2021-06-23 20:00 UTC (permalink / raw)
To: list ntg-context@ntg.nl ntg-context@ntg.nl ntg-context@ntg.nl
ntg-context@ntg.nl
Hi,
Is there a way to deliver the value of a variable in MetaFun to ConTeXt.
For example, I want to do the following:
\starttext
\startMPcode
numeric maxCount;
% … some code
maxCount := 10;
\stopMPcode
dorecurse{maxCount}
{It is \recurselevel.\par}
\stoptext
Thank you for reading.
Best regards,
Dalyoung
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* Re: Delivering the value of a variable in MetaFun to ConTeXt
2021-06-23 20:00 ` Delivering the value of a variable in MetaFun to ConTeXt Jeong Dal
@ 2021-06-23 20:36 ` Hans Hagen
2021-06-24 2:33 ` Jeong Dal
0 siblings, 1 reply; 6+ messages in thread
From: Hans Hagen @ 2021-06-23 20:36 UTC (permalink / raw)
To: mailing list for ConTeXt users, Jeong Dal
On 6/23/2021 10:00 PM, Jeong Dal wrote:
>
> Hi,
>
> Is there a way to deliver the value of a variable in MetaFun to ConTeXt.
> For example, I want to do the following:
>
> \starttext
> \startMPcode
> numeric maxCount;
> % … some code
> maxCount := 10;
> \stopMPcode
>
> dorecurse{maxCount}
> {It is \recurselevel.\par}
>
> \stoptext
>
> Thank you for reading.
\newcount\MyCount
\starttext
\startMPcode
numeric maxCount;
maxCount := 10;
setglobalmacro("MyMacro",decimal maxCount);
setglobalcount("MyCount",maxCount);
\stopMPcode
\dorecurse{\MyMacro}{It is \recurselevel. }\par
\dorecurse{\MyCount}{It is \recurselevel. }\par
\stoptext
-----------------------------------------------------------------
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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___________________________________________________________________________________
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* Re: Delivering the value of a variable in MetaFun to ConTeXt
2021-06-23 20:36 ` Hans Hagen
@ 2021-06-24 2:33 ` Jeong Dal
2021-06-24 3:39 ` Aditya Mahajan
0 siblings, 1 reply; 6+ messages in thread
From: Jeong Dal @ 2021-06-24 2:33 UTC (permalink / raw)
To: Hans Hagen; +Cc: mailing list for ConTeXt users
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Dear Hans,
Your code works fine.
> \starttext
>
> \startMPcode
> numeric maxCount;
> maxCount := 10;
> setglobalmacro("MyMacro",decial maxCount);
> setglobalcount("MyCount",maxCount);
> \stopMPcode
>
>
> \dorecurse{\MyMacro}{It is \recurselevel. }\par
> \dorecurse{\MyCount}{It is \recurselevel. }\par
>
> \stoptext
I applied your method to my code as following.
\newcount\udCount %%% add count
\startMPinitializations%{UDBasic}
pair A,B,C,D;
pair E, F, G, H;
path p,q;
numeric ang,maxNum;
numeric n; %AM Added
u:=1in;
A=(.95*TextWidth,u); B=(0,u); C=(0,0); D=(.95*TextWidth,0);
p := A--B--C--D;
q := (TextWidth,1.5u)--(0,1.5u)--(0,-.5u)--(TextWidth,-.5u)--cycle;
z0=(.1u,0);
vardef nextPt (expr M,N) =
if ypart(N) = 0:
H := whatever[N, N + dir(.5*angle(M-N))*u] = whatever[A,B];
else:
H := whatever[N, N + dir(.5*angle(M-N))*u] = whatever[C,D];
fi;
H
enddef;
def grayUD(expr i) =
draw G -- if ypart(B)=ypart(G): B -- C else: C -- B fi --z[i];
filldraw z[i]+2*(G-z[i])*u -- z[i] -- z[i+1] -- z[i+1]+(G-z[i])*u -- cycle withcolor .75white;
draw G -- z[i+1] dashed evenly;
draw z[0] for k=0 upto i: --z[k] endfor dashed evenly;
clip currentpicture to q;
enddef;
def linesUD(expr i) =
draw p;
draw z0 for k=0 upto i+1: --z[k] endfor dashed evenly;
% AM: removed. Set in in the main code
% setbounds currentpicture to boundingbox q;
enddef;
ang := 40;
z[1] = whatever[z[0], z[0]+dir(ang)*u] = whatever[A,B];
% AM: Changed next line from G to z[-1]
z[-1] = whatever[z[0], z[0]+dir(2*ang)*u] = whatever[A,B];
for k = 2 upto 20:
z[k] = nextPt(z[k-2],z[k-1]);
maxNum := k;
exitif xpart(z[k]) > TextWidth;
endfor;
maxNum := maxNum-1;
setglobalmacro("udMacro",decimal maxNum); %%% define udMacro and udCount
setglobalcount("udCount",maxNum);
\stopMPinitializations
\startuseMPgraphic{foldUD}{num}
numeric n;
n := \MPvar{num}-1;
G := z[n-1];
grayUD(n);
\stopuseMPgraphic
\startuseMPgraphic{dotLines}{num}
numeric n;
n := \MPvar{num}-1;
linesUD(n);
\stopuseMPgraphic
\setupinteraction[state=start]
\usemodule[animation]
\starttext
%\startanimation[menu=yes]
%{
\dorecurse{\udCount}
{\useMPgraphic{foldUD}{num=\recurselevel}}
{\useMPgraphic{dotLines}{num=\recurselevel}}
%}
%\stopanimation
\stoptext
1. Using “udCount” doesn’t issue error message, but it draws the path p only.
2. Using “udMacro” issue the error message.
Is there anything that I miss?
Best regards,
Dalyoung
**********
tex error > tex error on line 75 in file /Users/graph/Library/Mobile Documents/com~apple~CloudDocs/texMain/funmath/foldBandMPnew.tex: Undefined control sequence
<argument> \udMacro
<macro> \dorecurse #1->\ifcase #1
\relax \expandafter \gobbletwoarguments \or \expandafter \syst_helpers_recurse_y \else \expandafter \syst_helpers_recurse_x \fi {#1}
<line 3.75> \dorecurse{\udMacro}
65 numeric n;
66 n := \MPvar{num}-1;
67 linesUD(n);
68 \stopuseMPgraphic
69
70 \setupinteraction[state=start]
71 \usemodule[animation]
72 \starttext
73 %\startanimation[menu=yes]
74 %{
75 >> \dorecurse{\udMacro}
76 {\useMPgraphic{foldUD}{num=\recurselevel}}
77 {\useMPgraphic{dotLines}{num=\recurselevel}}
78 %}
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___________________________________________________________________________________
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Delivering the value of a variable in MetaFun to ConTeXt
2021-06-24 2:33 ` Jeong Dal
@ 2021-06-24 3:39 ` Aditya Mahajan
2021-06-24 6:31 ` Hans Hagen
0 siblings, 1 reply; 6+ messages in thread
From: Aditya Mahajan @ 2021-06-24 3:39 UTC (permalink / raw)
To: mailing list for ConTeXt users
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On Thu, 24 Jun 2021, Jeong Dal wrote:
> Dear Hans,
>
> Your code works fine.
>
> > \starttext
> >
> > \startMPcode
> > numeric maxCount;
> > maxCount := 10;
> > setglobalmacro("MyMacro",decial maxCount);
> > setglobalcount("MyCount",maxCount);
> > \stopMPcode
> >
> >
> > \dorecurse{\MyMacro}{It is \recurselevel. }\par
> > \dorecurse{\MyCount}{It is \recurselevel. }\par
> >
> > \stoptext
>
> I applied your method to my code as following.
>
> \newcount\udCount %%% add count
> \startMPinitializations%{UDBasic}
> pair A,B,C,D;
> pair E, F, G, H;
> path p,q;
> numeric ang,maxNum;
>
> numeric n; %AM Added
>
> u:=1in;
> A=(.95*TextWidth,u); B=(0,u); C=(0,0); D=(.95*TextWidth,0);
> p := A--B--C--D;
> q := (TextWidth,1.5u)--(0,1.5u)--(0,-.5u)--(TextWidth,-.5u)--cycle;
> z0=(.1u,0);
>
> vardef nextPt (expr M,N) =
> if ypart(N) = 0:
> H := whatever[N, N + dir(.5*angle(M-N))*u] = whatever[A,B];
> else:
> H := whatever[N, N + dir(.5*angle(M-N))*u] = whatever[C,D];
> fi;
> H
> enddef;
>
> def grayUD(expr i) =
> draw G -- if ypart(B)=ypart(G): B -- C else: C -- B fi --z[i];
> filldraw z[i]+2*(G-z[i])*u -- z[i] -- z[i+1] -- z[i+1]+(G-z[i])*u -- cycle withcolor .75white;
> draw G -- z[i+1] dashed evenly;
> draw z[0] for k=0 upto i: --z[k] endfor dashed evenly;
> clip currentpicture to q;
> enddef;
>
> def linesUD(expr i) =
> draw p;
> draw z0 for k=0 upto i+1: --z[k] endfor dashed evenly;
>
> % AM: removed. Set in in the main code
> % setbounds currentpicture to boundingbox q;
> enddef;
>
> ang := 40;
> z[1] = whatever[z[0], z[0]+dir(ang)*u] = whatever[A,B];
>
> % AM: Changed next line from G to z[-1]
> z[-1] = whatever[z[0], z[0]+dir(2*ang)*u] = whatever[A,B];
> for k = 2 upto 20:
> z[k] = nextPt(z[k-2],z[k-1]);
> maxNum := k;
> exitif xpart(z[k]) > TextWidth;
> endfor;
> maxNum := maxNum-1;
> setglobalmacro("udMacro",decimal maxNum); %%% define udMacro and udCount
> setglobalcount("udCount",maxNum);
>
> \stopMPinitializations
>
> \startuseMPgraphic{foldUD}{num}
> numeric n;
> n := \MPvar{num}-1;
> G := z[n-1];
> grayUD(n);
> \stopuseMPgraphic
> \startuseMPgraphic{dotLines}{num}
> numeric n;
> n := \MPvar{num}-1;
> linesUD(n);
> \stopuseMPgraphic
>
> \setupinteraction[state=start]
> \usemodule[animation]
> \starttext
> %\startanimation[menu=yes]
> %{
> \dorecurse{\udCount}
> {\useMPgraphic{foldUD}{num=\recurselevel}}
> {\useMPgraphic{dotLines}{num=\recurselevel}}
> %}
> %\stopanimation
> \stoptext
>
> 1. Using “udCount” doesn’t issue error message, but it draws the path p only.
> 2. Using “udMacro” issue the error message.
>
> Is there anything that I miss?
You need to call the setglobalmacro(...) macro. The code inside \startMPinitializations is only executed when you call any MP environment. But you are using \udCount before \useMPgraphic. A simple solution is to run dummy MP code so that MP initializations are run:
\starttext
\setbox\scratchbox\hbox{\startMPcode draw unitcircle; \stopMPcode}
\dorecurse{\udCount}
{\useMPgraphic{foldUD}{num=\recurselevel}}
{\useMPgraphic{dotLines}{num=\recurselevel}}
\stoptext
Aditya
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Delivering the value of a variable in MetaFun to ConTeXt
2021-06-24 3:39 ` Aditya Mahajan
@ 2021-06-24 6:31 ` Hans Hagen
0 siblings, 0 replies; 6+ messages in thread
From: Hans Hagen @ 2021-06-24 6:31 UTC (permalink / raw)
To: mailing list for ConTeXt users, Aditya Mahajan
On 6/24/2021 5:39 AM, Aditya Mahajan wrote:
> You need to call the setglobalmacro(...) macro. The code inside \startMPinitializations is only executed when you call any MP environment. But you are using \udCount before \useMPgraphic. A simple solution is to run dummy MP code so that MP initializations are run:
>
> \starttext
> \setbox\scratchbox\hbox{\startMPcode draw unitcircle; \stopMPcode}
> \dorecurse{\udCount}
> {\useMPgraphic{foldUD}{num=\recurselevel}}
> {\useMPgraphic{dotLines}{num=\recurselevel}}
> \stoptext
A run with no sideeffects in the content stream is:
\startMPcalculation
....
\stopMPcalculation
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
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Delivering the value of a variable in MetaFun to ConTeXt
[not found] <mailman.47.1624523134.1143.ntg-context@ntg.nl>
@ 2021-06-25 19:45 ` Jeong Dal
0 siblings, 0 replies; 6+ messages in thread
From: Jeong Dal @ 2021-06-25 19:45 UTC (permalink / raw)
To: ntg-context
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Dear Aditya and Hans,
Thank you for your suggestion.
I add
> \startMPcalculation
> ....
> \stopMPcalculation
and it works.
\setupinteraction[state=start]
\usemodule[animation]
\starttext
%\startanimation[menu=yes]
%{
\startMPcalculation
path p;
\stopMPcalculation
\dorecurse{\udCount}
{\useMPgraphic{foldUD}{num=\recurselevel}}
{\useMPgraphic{dotLines}{num=\recurselevel}}
%}
%\stopanimation
\stoptext
However, it draws all the figures under the \startanimation case.
There may be something I missed or there is something uncertain between \dorecurse and \startanimation.
Thank you.
Best regards,
Dalyoung
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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 / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___________________________________________________________________________________
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2021-06-23 20:00 ` Delivering the value of a variable in MetaFun to ConTeXt Jeong Dal
2021-06-23 20:36 ` Hans Hagen
2021-06-24 2:33 ` Jeong Dal
2021-06-24 3:39 ` Aditya Mahajan
2021-06-24 6:31 ` Hans Hagen
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