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[Václav Šmilauer <question234129@xxxxxxxxxxxxxxxxxxxxx>]

Question #234129 on Yade changed:
https://answers.launchpad.net/yade/+question/234129

Václav Šmilauer posted a new comment:
> You need to filter the interactions. An efficient (i.e. avoiding
> dynamic_casts) method is this:
> if (phys->getClassIndex() == CohFrictPhys::getClassIndexStatic())

I am almost sure that dynamic_cast is just as fast, or likely faster,
than getClassIndex() - it is a virtual method, so the exact class of the
object has to be looked up anyway. Try and measure.

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