[Boost-bugs] [Boost C++ Libraries] #9168: polygon resize -1 of a 1 point wide polygon doesn't make it disappear

Subject: [Boost-bugs] [Boost C++ Libraries] #9168: polygon resize -1 of a 1 point wide polygon doesn't make it disappear
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-09-27 00:26:27

#9168: polygon resize -1 of a 1 point wide polygon doesn't make it disappear
------------------------------+----------------------
 Reporter:  Stefan Thiede     |      Owner:  ljsimons
     Type:  Bugs              |     Status:  new
Milestone:  To Be Determined  |  Component:  polygon
  Version:  Boost 1.54.0      |   Severity:  Problem
 Keywords:  polygon resize    |
------------------------------+----------------------
 I tried to use resize(pset, -1); resize(pset, 1) to filter the results of
 a xor which should remove all polygon with only 1 or 2 database unit
 differences.
 resize -1 generates wrong output if the polygon are not orthogonal.

 input:     0,0    0,5   1,5   1,0  3,-3
 resize -1: 0,1   -3,5   0,0   0,1

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Ticket URL: <https://svn.boost.org/trac/boost/ticket/9168>
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