Functional MetaPost is a Haskell frontend to the MetaPost language by John
Hobby. Users write their graphics as Haskell programs, which then emit MetaPost
code that can be compiled into encapsulated PostScript files and smoothly
included into e.g. LaTeX.
A collection of useful examples how to use Functional MetaPost can be found in
the user's manual at
The document doesn't offer very much detail in terms of explanations, but the
code samples are quite helpful.
Further documentation can be found in the original thesis that describes the
implementation. The text is available in German at
<http://download.savannah.nongnu.org/releases/funcmp/Thesis.ps> and in English
Last but not least, there is a tutorial that offers many helpful examples
available in German at
<http://download.savannah.nongnu.org/releases/funcmp/Tutorial.ps> and in