Patrick: Copied from the old bluwiki.com luatex wiki

2010-12-07T21:27:15Z

Copied from the old bluwiki.com luatex wiki

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Writing directly some metapost code is now possible in LuaTeX, through MPLib. It only works in pdf mode.

To get it working, you will need three files: [http://source.contextgarden.net/tex/context/base/supp-mpl.lua supp-mpl.lua] and [http://source.contextgarden.net/tex/context/base/supp-mpl.tex supp-mpl.tex] (you need to copy/paste them) from the ConTeXt distribution, and a stupid .sty file:

<pre>
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{mplib}

\input supp-mpl.tex

\directlua0{dofile(kpse.find_file("formathack.lua"))}
</pre>

And create a file formathack.lua containing:

<pre>
local preamble = [[
input %s ; dump ;
]]
metapost.make = function (name, mem_name)
local mpx = mplib.new {
ini_version = true,
find_file = metapost.finder,
job_name = name}
if mpx then
local result = mpx:execute(string.format(preamble,name))
mpx:finish()
end
end
function replacesuffix(filename, suffix)
return (string.gsub(filename,"%.[%a%d]+$","")) .. "." .. suffix
end
metapost.load = function (name)
local mpx = mplib.new {
ini_version = false,
mem_name = replacesuffix(name,"mem"),
find_file = finder
}
local result
if not mpx then
metapost.make(name)
metapost.report("creating %s.mem", name)
mpx = mplib.new {
ini_version = false,
mem_name = replacesuffix(name,"mem"),
find_file = finder
}
end
if not mpx then
result = { status = 99, error = "out of memory"}
end
return mpx, result
end
</pre>

Once you have all four files, the following example should work:

<pre>
\mplibcode
beginfig(1);
pickup pencircle xscaled 5 rotated 30;
draw unitsquare scaled 20 withcmykcolor (0.3,0.4,0.6,0);
endfig;
\endmplibcode
</pre>

as well as any metapost code.

Metapost with LuaTeX - Revision history

Patrick: Copied from the old bluwiki.com luatex wiki