File test4-mplib-run-001.mp:

% begin graphic: n=3D0

; beginfig(1) ; = defaultfont:=3D"name:dejavuserif*default"; CurrentLayout:=3D"article"; = def OverlayLineColor=3Dblack enddef; def OverlayColor =3Dblack enddef; = ;picture pic; x:=3D80.000; y:=3D200.000; w:=3D133.000; h:=3D53.000;pic = :=3D ApplicationComponentLogo( w, h, typeString) shifted (x, -y); draw = pic;picture pic; x:=3D273.000; y:=3D253.000; w:=3D133.000; h:=3D53.000;pic= :=3D Function( w, h, typeString) shifted (x, -y); draw pic;picture pic; = x:=3D380.000; y:=3D133.000; w:=3D133.000; h:=3D53.000;pic :=3D Service( = w, h, typeString) shifted (x, -y); draw pic;path p; p :=3D = (200.000,-227.000)--(333.000,-227.000)--(333.000,-273.000); draw p;path = p; p :=3D (393.000,-253.000)--(393.000,-180.000); draw p;;; endfig = ;

% end graphic

This apparently is tried to get run through = METAPOST separately and that clearly doesn=E2=80=99t work, = because ApplicationComponentLogo isn=E2=80=99t defined. = This is the result of the following setup:

\starttext

\startMPdefinitions (or inclusions, no = difference)

% ApplicationComponentLogo is defined here with a = vardef

\stopMPdefinitions

\ctxlua{foo(=E2=80=9Cfilename= =E2=80=9D)} = % produces a series of

% = context.startMPpage { instance =3D "doublefun=E2=80=9D = }

= % several of:

% context( = METAPOST statements in a string)

= % context.stopMPpage()

\stoptext

How do I get my = MPdefinitions available in those METAPOST runs?

On 13 = Mar 2020, at 14:59, Hans Hagen <j.hagen@xs4all.nl> wrote:

On = 3/13/2020 2:33 PM, Aditya Mahajan wrote:
On Fri, 13 Mar 2020, Taco Hoekwater wrote:
Hi,

On 13 Mar 2020, at 12:53, Gerben Wierda <Gerben.Wierda@rna.nl> wrote:

Suppose I have this code:

Can I reuse that varied across follow-up MPPages?

Sure, put the vardef inside = \startMPinclusions:
or \startMPdefinitions = ... \stopMPdefinitions (don't remember what is the difference between = inclusions and definitions, now).
definitions: = once
inclusions : every time

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