From: Aditya Mahajan <adityam@umich.edu>
To: ntg-context@ntg.nl
Subject: Re: overleftrightarrow
Date: Thu, 19 Jul 2007 11:42:52 -0400 [thread overview]
Message-ID: <20070719114252.m0ioefpin4gocg84@web.mail.umich.edu> (raw)
In-Reply-To: <alpine.WNT.0.999.0707190246430.1308@nqvgln>
Quoting Aditya Mahajan <adityam@umich.edu>:
> On Sat, 30 Jun 2007, Mojca Miklavec wrote:
>> Consider
>> \def\myvec#1{\overrightharpoonup{#1}}
>> $(\myvec{\imath},\myvec{\jmath},\myvec{k})$ or $\myvec{\nabla}$,
>> $\myvec{\sigma}$, $\myvec{r}$, ...
>> The base size on top of i, j, k, ... is just too long and the harpoon
>> is also slightly too big.
>
> A realy realy ugly solution (if you do not want extensible arrows).
Here is a slightly better solution; I have tested it only for harpoons,
and there are no configuration options for other "accents". But it
works for both short and long objects.
\def\definemathfancyarrow
{\dotripleargument\dodefinemathfancyarrow}
\def\dodefinemathfancyarrow[#1][#2][#3]% arrow short long
{\setvalue{#1}{\dohandlemathfancyarrow[#2][#3]}}
\def\dohandlemathfancyarrow[#1][#2]%
{\mathpalette{\dodohandlemathfancyarrow{#1}{#2}}}
%TODO: The clip operation should be configurable, whether you want to clip
%right or clip left.
\unexpanded\def\dodohandlemathfancyarrow#1#2#3#4% short long style text
{\setbox0\hbox{$\m@th#3#4$}%
\setbox2\hbox{$\m@th#1#3$}%
\vbox{\ialign{##\crcr
\ifdim\wd0<\wd2
\mirror{\clip[width=\wd0]{\mirror{$\m@th#1#3$}}}%
\else
#2#3%
\fi\crcr
\noalign{\kern-\onepoint\nointerlineskip}%
$\m@th\hfil#3#4\hfil$\crcr}}}
\definemathfancyarrow [fancyoverrightharpoonup]
[\rightharpoonup]
[\rightharpoonupfill]
\let\myvec\fancyoverrightharpoonup
\starttext
$\myvec{\imath} \myvec{\jmath} \myvec{ABCD}$
\stoptext
Aditya
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next prev parent reply other threads:[~2007-07-19 15:42 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-29 0:50 \overleftrightarrow Jesse Alama
2007-06-29 3:31 ` \overleftrightarrow Aditya Mahajan
2007-06-30 8:47 ` \overleftrightarrow Mojca Miklavec
2007-07-01 16:29 ` \overleftrightarrow Hans Hagen
2007-07-19 7:01 ` \overleftrightarrow Aditya Mahajan
2007-07-19 15:42 ` Aditya Mahajan [this message]
2007-07-11 18:33 ` \overleftrightarrow Jesse Alama
2007-07-11 18:42 ` \overleftrightarrow Aditya Mahajan
2007-07-11 18:57 ` \overleftrightarrow Jesse Alama
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