Hi,
My next questions (result of not knowing the code well enough):
- is asssert necessary in [1]?
Not really necessary. It just means that goReverse would have to be
implemented properly, which, back then, was not the case with any of the
existing Ip2 functors. With swap==true, you'd have to call goReverse
instead of go (line 122), and also remember along with the cached
functor object, that goReverse must be called subsequently (in next
steps) as well.
In Woo, I removed this functor caching, since it does not seem to bring
any benefit performance-wise.
- why is IPhysDispatcher defined as autosymmetric (default template argument)
[3]?
The two arguments are materials (same type), and their order is
"arbitrary" (depending on geometry), hence it is desirable that both
orderings are handled by the functor. I have yet to see an Ip2 functor
which properly implements goReverse.
Hope this makes sense.
Vaclav
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