CGAL users discussion list

[Efi Fogel <>]

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



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