Re: [Boost-bugs] [Boost C++ Libraries] #10412: Offsetting polygons with buffer strategies fails for some distances

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #10412: Offsetting polygons with buffer strategies fails for some distances
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-08-30 10:09:16

#10412: Offsetting polygons with buffer strategies fails for some distances
-------------------------------------------------+-------------------------
  Reporter:  Olivier Tournaire                   |      Owner:
  <olivier.tournaire@…>                          |  barendgehrels
      Type:  Bugs                                |     Status:  assigned
 Milestone:  To Be Determined                    |  Component:  geometry
   Version:  Boost 1.56.0                        |   Severity:  Problem
Resolution:                                      |   Keywords:
-------------------------------------------------+-------------------------

Comment (by barendgehrels):

 I cannot reproduce this. I tried:
 - branch master (= 1.56) with VC 2010 and clang
 - branch develop with gcc
 - branch feature/buffer with gcc
 All give the same correct result

 The expected and detected area is 3109.6616

 One thing, you specify:

 {{{
     boost::geometry::strategy::buffer::join_miter
 join_strategy(offset_distance);

 }}}

 but this is probably not your intention, the miter limit should be in
 terms of a factor of the distance, for example 5, or 10. See also

 http://www.boost.org/doc/libs/1_56_0/libs/geometry/doc/html/geometry/reference/strategies/strategy_buffer_join_miter.html



 But I tried with and without this limit, both give non-intersecting
 output.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10412#comment:2>
Boost C++ Libraries <http://www.boost.org/>
Boost provides free peer-reviewed portable C++ source libraries.