|[eigen] Why does Eigen::Quaterniond::angularDistance() method return the absolute angle?|
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This is my first mailling list mail. So if I could improve something tell me.
The Issue I face currently with the Eigen::Quaterniond class is that my application relies on the signed angle between two quaternions. Is there a really easy way to get that sign information I'm not aware of?
I had a look in the history why there is the numext::abs(d.w()) inside the atan2 call and found this:
This is not really an explanation so I wanted to ask for the reasoning behind the abs.
I would appreciate if you could change this method or add another one which gives the signed angle.
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