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["Sergei D." <dorofeenko@xxxxxxxxx>]

> > And more, how to ensuse one-way normals on faceted surface?
> > I want to calc force on it, but if the normals mixed inner and outer, 
> > it can be problem...
> The normal sense is given by vertex order you give when constructing 
> the facet. It is your responsibility to assure that they are not 
> mismatched between facets belonging to one surface -- v.
yes, I know. But if I create a surface using utils or geom module(or 
import it from stl or other place), I can not assure it. Seems, need to 
add a specialized function for this in yade.utils.

--
Best regards,

Sergei Dorofeenko,
Cand. Phys.-Mat. Sci.

Institute of Problems of Chemical Physics,
Chernogolovka, Moscow region, Russia.

e-mail: dorofeenko@xxxxxxxxx