In March I've been preparing a lot of stuff for
a paper on characterization of mixed boundaries.
This includes some calculations, graphs and other pictures.
Somewhat by an accident I've found a method
to speed up my calculations. In the computations, each
small triangular boundary segment is processed.
However, imagine a couple of segments of very similar parameters that
constitute a fragment of a boundary. They can be replaced
by one segment and our results won't be worse. We used
a QSlim program for this purpose.