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Subject: Re: [geometry] translation and rotation proposal
From: Bruno Lalande (bruno.lalande_at_[hidden])
Date: 2013-06-23 16:04:15

Hi Barend,

   Yes, it makes sense and would need a similar (or same) interface...
> return_difference<Point>(point1, point2) would be applied to Cartesian
> points or to Spherical / Geographic points. For lat-lon it would return a
> course/distance pair, this way you can add the calculated vector to a
> point1 and get point2 back. In this case a vector-type is something
> different than a point-type, more than in cartesian cases.

Thanks, that's what I suspected, was just not sure if that was actually
used in real life. Good to know.


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