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From: Bruno Lalande (bruno.lalande_at_[hidden])
Date: 2008-03-25 16:53:34

> - While generalized point types (2D vs. 3D and XY vs. lat/lon) are OK,
> it is often extremely useful in graphics code to make your objects fit
> the underlying representation of an externally defined structure (such
> as POINT type in Win32) -- for example by publicly or privately
> inheriting from it. This lets you use e.g. vectors of points as
> arguments for system APIs. Can be done by adding an extra template
> argument (with a default) to point<> and moving most of the
> implementation details into a traits class.

In my understanding, the goal of point is not to wrap your own point
structure but to be replaced with it, provided that it satisfies the same
concept : value<>() functions, coordinate_type, coordinate_count... If you
do so, all the algorithms are supposed to work with your structure.


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