[metapost] Merging oultines in Metapost

[Taco Hoekwater]

Filipe wrote:
> Hi,
> 
> How can one make Metapost merge contours and output only the resulting
> composite outlines? 

IIRC, the package 'roex' has a macro called remove_overlap, but
I do not know first-hand how to use it. The package is officially
for metafont, but it should work in metapost as well, I think.

See http://www.ctan.org/tex-archive/graphics/MF-PS/roex

Best wishes,
Taco