Re: [Boost-users] making a geometry half closed

Subject: Re: [Boost-users] making a geometry half closed
From: Barend Gehrels (barend_at_[hidden])
Date: 2014-01-26 16:49:20

Hi Sean,

Sean Farrow wrote On 26-1-2014 14:44:
>
> Hi,
>
> From what I understand any boost geometry is fully closed. Is there a 
> way of making a geometry half closed, such that the bottom row is not 
> included?
>
> I'm needing to do this with a Box2D$Values.
>
> Any help appreciated.
>

No, this is not really implemented. Which problem do you have in mind? 
For example a "touch" relationship where two geometries touch each 
other, would this differ if they touch the upper row instead of the 
lower row?

The within-algorithm (for point-in-box) considers a point within if it 
is completely inside. That can be finetuned by supplying a strategy 
which considers bottom-row / right row.

Regard, Barend