Geometry Boost List: Re: [geometry] intersects (one geometry) possible issue

Subject: Re: [geometry] intersects (one geometry) possible issue
From: Barend Gehrels (barend_at_[hidden])
Date: 2013-11-10 17:48:54

Hi Joan,

joan wrote On 6-11-2013 15:58:
> Hello,
>
> I have a geometry that self intersects when using intersects (one geometry)
> by should not.
>
> <http://boost-geometry.203548.n3.nabble.com/file/n4025738/selfintersectissue_boost.png>
>
>
> This is the polygon that produce the self intersection :
>   
> 	polygon myBoostPolygon;
> 	boost::geometry::read_wkt("POLYGON((137.14632454923444
> 200.61927877947369,50 224, 323 497,255 169,137.14632454923444
> 200.61927877947369))", myBoostPolygon);
>
> 	//check if boundary segments doesn't intersect with the polygon
> 	if (boost::geometry::intersects(myBoostPolygon))
> 	{
> 		cout << "Self intersects !" << endl;
> 	}
>

This is surprising, indeed not the intention. I can reproduce it.

Thanks for the report and reproduction, will be repaired.

Regards, Barend