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Command/startuniqueMPgraphic (view source)
Revision as of 09:50, 7 August 2020
, 09:50, 7 August 2020Taco moved page Environment/uniqueMPgraphic to Command/startuniqueMPgraphic over a redirect without leaving a redirect
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== [[Help:Reference|Syntax]] (autogenerated) ==
<syntax>startuniqueMPgraphic</syntax>
== [[Help:Reference|Syntax]] ==
== Description ==
Define code for a MetaPost graphic. The graphic can be placed in the document with {{cmd|uniqueMPgraphic}}. Every time any of the following variables changes, and will be the graphic is recompiled every time it it is placed.: * {{cmd|overlaywidth}}* {{cmd|overlayheight}}* {{cmd|overlaydepth}}* {{cmd|overlaycolor}}* {{cmd|overlaylinecolor}}
== Example ==
\def\mycolor{.625blue}
blue: \uniqueMPgraphic{name}
</context>
This illustrates the fact that graphic is reused if the dimensions don't change.
<context source=yes>
\startuniqueMPgraphic{randomcolor}
fill unitsquare
xyscaled (\overlaywidth, \overlayheight)
% `uniformdeviate 1` produces a random number between 0 and 1
withcolor (uniformdeviate 1, uniformdeviate 1, uniformdeviate 1);
\stopuniqueMPgraphic
\defineoverlay
[beta]
[\uniqueMPgraphic{randomcolor}]
\dontleavehmode
\framed[background=beta]{narrow}
\framed[background=beta]{narrow}
\framed[background=beta]{rather wide}
</context>
