CGAL users discussion list

[Lars Ole Belhage <>]

Great - then I might have a way to solve my problem.

Thanks a lot
Belhage


On Wed, 2014-12-03 at 16:50 +0200, Efi Fogel wrote:
> On Wed, Dec 3, 2014 at 4:45 PM, Lars Ole Belhage 
> <>
> wrote:
> 
>         Ok - thanks for a quick answer, spared me for trying in vain!
>         
>         But the boolean operations takes generalized polygons ?
> 
> 
> Indeed.
>  
> 
>         
>         Many regards
>         Belhage
>         
>         
>         On Wed, 2014-12-03 at 12:46 +0200, Efi Fogel wrote:
>         > I'm afraid not.
>         >
>         > The input is restricted to a "standard" polygon (or polygon
>         with
>         > holes), which can be represented by a sequence (or sequences
>         if it has
>         > holes) of points for example.
>         >
>         > The output is what we call a generalized polygon (or a
>         generalized
>         > polygon with wholes.) A generalized polygon must be
>         represented by a
>         > sequence (or sequences if it has holes) of curves.
>         >
>         > Computing the Minkowski sum or even the offset of a
>         generalized
>         > polygon, I think, is much more complicated.
>         >
>         >
>         >
>         >    ____  _        ____             _
>         >   /_____/_) o    /__________  __  //
>         >  (____ (   (    (    (_/ (_/-(-'_(/
>         >                          _/
>         >
>         >
>         >
>         >
>         > On Mon, Dec 1, 2014 at 10:42 PM, Lars Ole Belhage
>         > 
> <>
>  wrote:
>         >         Hello,
>         >
>         >         Running the many of the small test programs has
>         convinced me
>         >         of the
>         >         versatility and elegance of the CGAL.
>         >
>         >         Now, I'm trying to find a way to run the output of
>         >         offset_polygon_2 into
>         >         another offset_polygon_2. But after browsing
>         documentation,
>         >         I'm getting
>         >         a little worried - can the "offset" algorithms work
>         with
>         >         polygons with
>         >         arcs (or splines) in them ?
>         >
>         >         If "yes", I will dig deeper and get the right traits
>         to my
>         >         data (but an
>         >         simple extension of the the
>         Minkowski_sum_2/exact_offset.cpp
>         >         to do the
>         >         sum several times, would of course be of great help)
>         >
>         >         If "no", well...
>         >
>         >         Great Salutions
>         >         Belhage
>         >
>         >
>         >
>         >         --
>         >         You are currently subscribed to cgal-discuss.
>         >         To unsubscribe or access the archives, go to
>         >         https://sympa.inria.fr/sympa/info/cgal-discuss
>         >
>         >
>         >
>         >
>         
>         
>         
>         --
>         You are currently subscribed to cgal-discuss.
>         To unsubscribe or access the archives, go to
>         https://sympa.inria.fr/sympa/info/cgal-discuss
>         
>         
>         
> 
>