yade-dev team mailing list archive

[Anton Gladky <gladky.anton@xxxxxxxxx>]

2010/5/6 Václav Šmilauer <eudoxos@xxxxxxxx>

>
> >
> > You think Rotate method will slow down calculation? As for me, it is
> > very clear to have Rotate method.
> > You do not need to remember, that rotation is quaternion and vector
> > multiplication.
>
> It will not be slower at all.
>
> It is just that I would like to have the same interface in c++ and
> python; there is no Rotate in c++ (and will not be, since we cannot
> change Eigen's API), and I think it is not that difficult to write q*v
> instead of q.Rotate(v)...
>

Ok, I agree.


>
> The same for the old Wm3 API (like ZERO, ToAxisAngle etc), which is
> supported, but not documented
> (https://www.yade-dem.org/sphinx/external.html#module-miniEigen) and
> should not be used in scripts anymore (I might create wrapper function
> that will print warnings, like we do for deprecated attributes and
> classes etc).
>

I think, we can just warn people about changes in API and ask them to change
their own scripts.
And, of course, we'll change ./examples/* files and forget about those
functions.


>
> > Do we use Matrix3r*Matrix3r somewhere?
>
> No, but it is a meaningful operation, so no reason to not support it,
> right? (In c++ it is used in Cell BTW)
>

In this case, maybe, it is easier to write this function-wrapper from
scratch?


>
> Cheers, v.
>
>
>
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