Geometry Boost List: [geometry] closed wrt closedness?

Subject: [geometry] closed wrt closedness?
From: Volker Schöch (vschoech_at_[hidden])
Date: 2012-02-16 10:45:22

Hi,

Pardon the pun... Looking at the example from my previous post, I noticed that the result of the asymmetric difference algorithm is a closed polygon although it should be the same type as the input (not closed).

A = MULTIPOLYGON(((1740 1056,2640 1326,3540 1776,3540 32767,1740 32767)))
B = MULTIPOLYGON(((1740 1794,2640 2280,3540 2352,3540 32767,1740 32767)))
A^B = MULTIPOLYGON(((1740 1794,1740 1056,2640 1326,3540 1776,3540 2352,2640 2280,1740 1794)))

I am using boost 1.48.0. My polygon type is oriented counter-clockwise and not closed.

Is this intentional/tolerable, or do you consider this a bug?

Regards
   Volker

--
Volker Schöch | vschoech_at_[hidden]
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