Hi,

there are no operator== and operator!= defined for Quaternion (and for Matrix, for that matter). Is that intentional?

I know that float comparisons don't always makes sense, but are occasionally useful for testing exact equality of small arrays (say, 3 elements).

I defined those operators by hand externally, that works, but I am wondering if there is a more straightforward way in Eigen.

Cheers, Vaclav

We just didn't expect anybody to use that, but why not. Anyway, this is just an API addition so it can be made at any later date.

Speaking of API additions, in Wm3, the normalize method returned the norm before normalization (which has to be computed internally anyway) rather than void, as it is in Eigen. It made the code more elegant (though perhaps less readable) at some places.

hm no sorry, i'm not in favor of this kind of API that is not self-explanatory. I realize the interest of getting the norm, but then i prefer to let people do themselves: float norm = quaternion.norm(); quaternion/=norm;

No problem, I changed the code everywhere already anyways. BTW soon you might add https://www.yade-dem.org to projects using Eigen

Very exciting! When you want to, just edit the wiki yourself