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From: Fabrice Couvreur <fabrice1.couvreur@gmail.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Package esvect and Context
Date: Fri, 26 May 2017 12:53:42 +0200	[thread overview]
Message-ID: <CACyK-eok_RPyopOEKj1H4Z_kKTqnbedohZaywFFVDrG5WpYjfA@mail.gmail.com> (raw)


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Hello,
Hans suggested a macro to draw the vectors . It works well but I find that
in some situations, the arrow is too big.
thank you,
Fabrice


https://mailman.ntg.nl/pipermail/ntg-context/2016/085828.html

\useMPlibrary[mat]

\startMPextensions
     vardef math_stacker_arrow_shape =
         image (
             drawarrow
                 (OverlayWidth,OverlayOffset) -- (0,OverlayOffset)
             withcolor
                 OverlayLineColor ;
             setbounds currentpicture to boundingbox currentpicture
bottomenlarged (OverlayOffset/2) topenlarged (OverlayOffset/2) ;
         )
     enddef ;
     vardef math_stacker_leftarrow_shape =
         math_stacker_arrow_shape
     enddef ;
     vardef math_stacker_rightarrow_shape =
         math_stacker_arrow_shape rotated 180
     enddef ;
\stopMPextensions

\startuniqueMPgraphic{math:stacker:\number"2190}
     math_stacker_draw(math_stacker_leftarrow_shape) ;
\stopuniqueMPgraphic

\startuniqueMPgraphic{math:stacker:\number"2192}
     math_stacker_draw(math_stacker_rightarrow_shape) ;
\stopuniqueMPgraphic

% so far

\setupmathstackers
   [both] % vfenced]
   [color=darkred,
    alternative=mp]

\setupmathstackers
   [top]
   [color=darkred,
    alternative=mp]

\setupmathstackers
   [bottom]
   [color=darkred,
    alternative=mp]

\starttext

$\overrightarrow  {i}$

\stoptext

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             reply	other threads:[~2017-05-26 10:53 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-26 10:53 Fabrice Couvreur [this message]
2017-05-26 22:09 ` Hans Hagen
2017-05-27  7:40   ` Fabrice Couvreur
  -- strict thread matches above, loose matches on Subject: below --
2016-06-04  7:12 Fabrice Couvreur
2016-06-06 19:23 ` josephcanedo
2016-06-06 19:39   ` Fabrice Couvreur
2016-06-06 20:50     ` Hans Hagen
2016-06-07 20:17       ` Fabrice Couvreur
2016-06-07 21:04       ` Wolfgang Schuster
2016-06-15 12:48         ` Fabrice Couvreur
2016-06-15 12:58           ` Wolfgang Schuster
2016-06-15 13:17             ` Fabrice Couvreur

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