[metapost] Including graphics in MP

[Laurence.Finston at gmx.net]

Hello,

Is it possible to include PostScript graphics, or literal PostScript in general, in MP files?
The purpose is to composite multiple images with correct alignment.
It's possible to do this in TeX (see below), but it would be nice to be able to do this directly in MP.

I've determined that this doesn't work:

%prologues := 3;
%outputtemplate := "%j_%c.ps";

outputformat:="png";
outputformatoptions:="format=rgb antialias=none";
outputtemplate := "%j_%c.png";

verbatimtex \input epsf etex;

path q[];

beginfig(1);
  q0 = (unitsquare scaled 2cm) shifted (-1cm, -1cm);
  draw q0 withpen pencircle scaled .333mm;
  label(btex \vbox{\hbox{\epsffile{testdot1.eps}}} etex, origin);
endfig;
end;

It fails silently and the resulting PNG file is just a white square (see attachment).  It doesn't work with EPS output, either.

It does work to do this in TeX:

\input epsf
\parindent=0pt
\parskip=0pt
\baselineskip=0pt
\advance\hoffset by -1in
\advance\voffset by -1in
\nopagenumbers
\def\epsfsize#1#2{#1}

\vbox to 0pt{\vskip2cm\hbox to 0pt{\hskip1cm
\epsffile{testdot1.eps}\hss}\vss}
\vbox to 0pt{\vskip2cm
\hbox to 0pt{\hskip1cm\epsffile{testdot2.eps}\hss}\vss}
\vfil\eject
\bye

The result is in `testinclude.pdf' (attached).

Any help would be much appreciated.

Laurence Finston





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