Difference between revisions of "MetaFun - MetaPost in ConTeXt"

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m (moved Mpgraphic to MetaPost in ConTeXt: This title describes the page better)
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Inside {{cmd|startMPinclusions}} one can specify MetaPost files to ''input'', and also define MetaPost functions.
 
Inside {{cmd|startMPinclusions}} one can specify MetaPost files to ''input'', and also define MetaPost functions.
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== \startuseMPgraphic and \useMPgraphic ==
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{{cmd|startuseMPgraphic}}defines a piece of graphics code that is processed anew every time the graphic is placed with {{cmd|useMPgraphic}}.
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== \startreusableMPgraphic and \reuseMPgraphic ==
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For graphics that are the same every time, it is better to use {{cmd|startreusableMPgraphic}}: the graphic is compiled only once, and the one resulting picture can be placed at various points with {{cmd|reuseMPgraphic}}.
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== \startMPcode ==
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When reusing a graphic is not important, you can simply use {{cmd|startMPcode}}.
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<context source=yes>
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\startMPcode
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  fill fullcircle scaled 20pt withcolor .625green;
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\stopMPcode
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</context>
  
 
== \startMPpage ==
 
== \startMPpage ==

Revision as of 13:46, 26 November 2012

< Graphics|Metafun|Metapost>

ConTeXT provides a tight integration of TeX and MetaPost. MetaPost can used behind the scenes for some graphic trickery. This integration is also helpful for drawing figures in MetaPost and use them in the document. This page is a brief overviw of some of the commonly used commands.

\defineMPinstance and \setupMPinstance

\defineMPinstance and \setupMPinstance can be used to set up MetaPost invocations with particular features. One use case could be to select a sans serif font for all MetaPost labels.

\startMPenvironment

\startMPenvironment is a deprecated evironment in which one could place settings that one only wanted to apply in the MetaPost environment, but not in the document itself. One should use \defineMPinstance and \setupMPinstance, instead.

\startMPinclusions

Inside \startMPinclusions one can specify MetaPost files to input, and also define MetaPost functions.

\startuseMPgraphic and \useMPgraphic

\startuseMPgraphicdefines a piece of graphics code that is processed anew every time the graphic is placed with \useMPgraphic.

\startreusableMPgraphic and \reuseMPgraphic

For graphics that are the same every time, it is better to use \startreusableMPgraphic: the graphic is compiled only once, and the one resulting picture can be placed at various points with \reuseMPgraphic.

\startMPcode

When reusing a graphic is not important, you can simply use \startMPcode.

\startMPcode
  fill fullcircle scaled 20pt withcolor .625green;
\stopMPcode

\startMPpage

\startMPpage produces a page a containing MetaPost graphic. The page is just large enough to contain the graphic. The resulting pdf is self-contained (it has all the fonts embedded) This is useful if you want to send the figure to a coauthor or a journal.

\startstaticMPfigure

The \startuseMPgraphic series of commands were designed for using MetaPost for drawing fancy frames and backgrounds and not for using stand-alone graphics for a document. \startstaticMPfigure creates a separate pdf file containing the graphic. This pdf can be included in the document using \usestaticMPfigure. ConTeXt is clever enough to recompile the resulting MetaPost file only if something inside the \startstaticMPfigure has changed.