[Therion] slopes in small caves

[Maximillian Dornseif]

We have lots of small slopes like 
http://filez.foxel.org/3F2Z0L2K1B1a0G2T2539 - rendering them in Therion results in something like http://filez.foxel.org/440r3f2R1M0F2g3W0G2Z which is unsatisfactory - I would prefer mor orthogonal lines to the slope base line.

To my understanding this can be accomplished by redefining METAPOST code. In http://therion.speleo.sk/wiki/doku.php?id=mmj:4 Images http://therion.speleo.sk/wiki/lib/exe/detail.php?id=mmj%3A4&media=czsk:mmj:bez_layout.jpg and http://therion.speleo.sk/wiki/lib/exe/detail.php?id=mmj%3A4&media=czsk:mmj:layout.jpg this seems to have been done. But the provided METAPOST code seems only to redefine a_blocks.

I checked l_slope_SKBB in mpost/thLine.mp but this seems to be a non-trivial 140 line function.

Is there an easier way to move slope bars tighter together?

Anny Help would be appreciated!

Maximillian