Re: [NTG-context] Reset environment between MetaPost graphics?
On Thu, 2022-01-20 at 15:47 +0100, Hans Hagen via ntg-context wrote:
> On 1/20/2022 3:26 PM, Aditya Mahajan via ntg-context wrote:
>
> > AFAIK, there is no in-built support for this.
>
> FYEO:
>
> \starttext
>
> \startMPcode
> u = 123;
> \stopMPcode
>
> \ctxlua{metapost.reset("metafun:1")}
>
> \startMPcode
> u = 123;
> \stopMPcode
>
> \stoptext
>
> (the instance is reported on the console)
Thanks Aditya and Hans! Glad to hear I wasn’t missing anything obvious.
Vincent
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Re: [NTG-context] Reset environment between MetaPost graphics?
On 1/20/2022 3:42 PM, Hans Hagen via ntg-context wrote: next upload: \resetMPinstance[metafun:1] but try to avoid this because reloading takes time 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 ___
Re: [NTG-context] Reset environment between MetaPost graphics?
On 1/20/2022 3:26 PM, Aditya Mahajan via ntg-context wrote:
AFAIK, there is no in-built support for this.
FYEO:
\starttext
\startMPcode
u = 123;
\stopMPcode
\ctxlua{metapost.reset("metafun:1")}
\startMPcode
u = 123;
\stopMPcode
\stoptext
(the instance is reported on the console)
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] Reset environment between MetaPost graphics?
On 1/20/2022 2:59 PM, Vincent Hennebert via ntg-context wrote: Hi, Say I’m writing a document containing many independent MetaPost figures. I don’t want to bother with enclosing each and every graphics in a ‘begingroup...endgroup’ with the appropriate ‘save’ statement. But I don’t want variables from previous graphics to leak into following ones either. Like this: % SOF \starttext Text about some topic. \startMPcode u=1cm; draw (-u, u)--origin--(u ,u); \stopMPcode Now on to another topic. \startMPcode u=2cm; % Triggers an error: Inconsistent equation (off by 28.34645) draw (-u, u)..origin..(u ,u); \stopMPcode \stoptext % EOF Is that achievable? you could do save u; u = 1cm; or u := 1cm; or numeric u; u := 1cm; or you could use a dedicated instance (normally not needed) 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 ___
Re: [NTG-context] Reset environment between MetaPost graphics?
On Thu, 20 Jan 2022, Vincent Hennebert via ntg-context wrote: > Hi, > > Say I’m writing a document containing many independent MetaPost > figures. I don’t want to bother with enclosing each and every graphics > in a ‘begingroup...endgroup’ with the appropriate ‘save’ statement. But > I don’t want variables from previous graphics to leak into following > ones either. > > Like this: > > % SOF > \starttext > > Text about some topic. > > \startMPcode > u=1cm; > draw (-u, u)--origin--(u ,u); > \stopMPcode > > Now on to another topic. > > \startMPcode > u=2cm; % Triggers an error: Inconsistent equation (off by 28.34645) > draw (-u, u)..origin..(u ,u); > \stopMPcode > > \stoptext > % EOF > > Is that achievable? AFAIK, there is no in-built support for this. I workaround this as follows. Instead of defining new variables using numeric u; pair p; path q; etc. use: newnumeric u; newpair p; newpath p; etc. which automatically does a save beforehand. The only place where the abstraction leaks is arrays. You cannot do, newpair p[]; but need save p; pair p[] instead. Another option is to use assignment rather than equality: u := 2cm; Aditya___ 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 ___
[NTG-context] Reset environment between MetaPost graphics?
Hi, Say I’m writing a document containing many independent MetaPost figures. I don’t want to bother with enclosing each and every graphics in a ‘begingroup...endgroup’ with the appropriate ‘save’ statement. But I don’t want variables from previous graphics to leak into following ones either. Like this: % SOF \starttext Text about some topic. \startMPcode u=1cm; draw (-u, u)--origin--(u ,u); \stopMPcode Now on to another topic. \startMPcode u=2cm; % Triggers an error: Inconsistent equation (off by 28.34645) draw (-u, u)..origin..(u ,u); \stopMPcode \stoptext % EOF Is that achievable? Thanks, Vincent ___ 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 ___
