Re: [NTG-context] Delivering the value of a variable in MetaFun to ConTeXt
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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Re: [NTG-context] Delivering the value of a variable in MetaFun to ConTeXt
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
\udMacro
\dorecurse #1->\ifcase #1
\relax \expandafter \gobbletwoarguments \or \expandafter
\syst_helpers_recurse_y \else \expandafter \syst_helpers_recurse_x \fi {#1}
\dorecurse{\udMacro}
65numeric n;
66n := \MPvar{num}-1;
67linesUD(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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Re: [NTG-context] Delivering the value of a variable in MetaFun to ConTeXt
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
-
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Re: [NTG-context] Delivering the value of a variable in MetaFun to ConTeXt
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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Re: [NTG-context] Delivering the value of a variable in MetaFun to ConTeXt
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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