CGAL users discussion list

[Efraim Fogel <>]

Minkowski sum is defined as the pairwise sum of the points in the two
summands respectively. There is no trace or reference point (except for
the origin).

Simao Soares wrote:
> I want to know if the point used to trace the minkowski sums is the
> reference point of the polygon, or the center of the polygon, and what
> is the center, a simple center of the bounding box of the polygon or a
> mass center.
>
> On Sat, Aug 2, 2008 at 11:38 PM, 
> <
> <mailto:>>
>  wrote:
>
>     I'm not sure I understand your question, but perhaps by "reference
>     point" you mean the origin of the coordinate system.
>
>
>     Quoting "Simao Soares" 
> <
>     
> <mailto:>>:
>
>         Hello,
>
>         I would like to know how is calculated the center of a polygon
>         in the
>         minkowski sums function from cgal. This function use the
>         center of the
>         polygon as the reference point, but I don't know if this
>         center is a simple
>         center of the bounding box of the polygon or a mass center.
>
>         Thanks in advance,
>
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