Hi Pilou
NOOOOO no genius, (toolman, HIHI) is a plugin from:

http://www.tensile-structures.de/index.html

Tool is time-limited, =mesh triangles are produced internally ("Sketchup > tab View > show hidden"),
only closed line-loop is accepted, work slowly with complex 3D-curve.

It gives still few useful tools for combination Moi+Sketchup.
My faforits gives afterwards.