From: Hans Hagen via ntg-context <ntg-context@ntg.nl>
To: ntg-context@ntg.nl
Cc: Hans Hagen <j.hagen@freedom.nl>
Subject: Re: \hpos in math - Half solved
Date: Wed, 7 Dec 2022 16:30:07 +0100 [thread overview]
Message-ID: <d74cb9a9-9fc2-d7a3-7b8c-7ac151f83bec@freedom.nl> (raw)
In-Reply-To: <C197037B-6D29-472B-B43E-2A645CBA7E38@comcast.net>
[-- Attachment #1: Type: text/plain, Size: 2549 bytes --]
On 12/7/2022 1:42 PM, Gavin via ntg-context wrote:
> Hi List,
>
> I solved my original problem 2, allowing me to reuse the same \hpos labels in different equations without interference. I added an equation counter and set up my custom math version of \hpos to use the count as part of the label internally. I tried to do this with a regular ConTeXt counter, but had all sorts of mysterious, wrong behavior. When I switched to using a Lua counter, everything worked immediately. So, while there is nothing brilliant about this solution, I’ll share it for anyone who might want to do something similar in the future.
Using this could work
\newcount\SFNum
\global\advance\SFNum\plusone
\the\SFNum
(you now use a (global) lua counter
> The code I added is below, with some comments. The complete example file is attached. The result is two equations.
>
>
>
> Each equation was written using the same labels (X,Y,Z), but internally they have separate sets, (1:X and 2:X, etc.).
>
> The moral of the story for me: Use more Lua.
but ... work local ... so
document.sfnum
etc in order to avoid clashes
> Gavin
>
>
> % Lua counts the spin formulas
> \ctxlua{sfnum = 0} % Count starts at zero
> \def\sfID{\ctxlua{context(sfnum)}} % ConTeXt can call the count from Lua to use as an ID for each equation.
>
> % Spin formulas increase the spin formula count and typeset the formula as usual.
> \define\startspinformula{
> \ctxlua{sfnum = sfnum + 1}
> \startformula
> }
> \define\stopspinformula{\stopformula}
>
> % My own \mpos uses the spin formula ID as part of the box label, then sets the contents as math.
> \define[2]\mpos{\hpos{\sfID:#1}{$#2$}}
>
> % Two commands for requesting contractions (the connections between spinors), using the spin formula ID.
> \define[2]\contract{%
> \startpositionoverlay{graphics}%
> \setMPpositiongraphic{\sfID:#1}{mypos:contract}{to=\sfID:#2}%
> \stoppositionoverlay%
> }
> \define[2]\contractbelow{%
> \startpositionoverlay{graphics}%
> \setMPpositiongraphic{\sfID:#1}{mypos:contractbelow}{to=\sfID:#2}%
> \stoppositionoverlay%
> }
Attached what you can do in a next upload (on the million math test
files MS and I have by now)
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
-----------------------------------------------------------------
[-- Attachment #2: 221206-1.pdf --]
[-- Type: application/pdf, Size: 14968 bytes --]
[-- Attachment #3: Type: text/plain, Size: 496 bytes --]
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context
webpage : https://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : https://contextgarden.net
___________________________________________________________________________________
next prev parent reply other threads:[~2022-12-07 15:30 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-05 23:39 \hpos in math Gavin via ntg-context
2022-12-06 9:15 ` Hans Hagen via ntg-context
2022-12-06 13:22 ` Gavin via ntg-context
2022-12-07 12:42 ` \hpos in math - Half solved Gavin via ntg-context
2022-12-07 15:30 ` Hans Hagen via ntg-context [this message]
2022-12-07 22:25 ` Hans Hagen via ntg-context
2022-12-08 0:03 ` Gavin via ntg-context
2022-12-08 6:14 ` Mikael Sundqvist via ntg-context
2022-12-08 19:54 ` Otared Kavian via ntg-context
2022-12-08 21:47 ` Hans Hagen via ntg-context
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=d74cb9a9-9fc2-d7a3-7b8c-7ac151f83bec@freedom.nl \
--to=ntg-context@ntg.nl \
--cc=j.hagen@freedom.nl \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).