Boost logo

Geometry :

Subject: [ggl] Strange behaviour on a sample
From: Александр Пронченков (the.zett)
Date: 2010-04-09 12:56:10


Hi,

I found a strange result on the following sample (complete code of the
sample is attached). I tried to find intersection of two polygons:

  {{42.0,-71.0}, {42.5,-71.0}, {42.5,-72.0}, {42.0,-72.0}}

and

  {{42.35,-71.04}, {42.34,-71.04},{42.34,-71.03},{42.35,-71.03}}

It easy to see that the first one includes the second. But result of
this operation is an empty set of polygons.

Environment:

boost-geometry: br59805 | barendgehrels | 2010-02-21 14:43:54 +0500
(???, 21 ??? 2010) | 2 lines
g++ (Ubuntu 4.4.1-4ubuntu9) 4.4.1
Intel(R) Core(TM) i5 CPU 750 @ 2.67GHz

---
Best regards
-------------- next part --------------
A non-text attachment was scrubbed...
Name: sample.cpp
Type: text/x-c++src
Size: 1162 bytes
Desc: not available
Url : http://lists.osgeo.org/pipermail/ggl/attachments/20100409/7bea130d/sample.bin

Geometry list run by mateusz at loskot.net