CGAL users discussion list

The operations provided in the Boolean_set_operations_2 package are
based on the Arrangement_2 data structure. In fact, you can obtain the
underlying Arrangement_2. You may want work directly on the arrangement.

Quoting Marko Kukovec 
<>:

> Greetings!
>
> I managed to compose some polygons based on the example "14.3.2
> Operating on Polygons with Circular Arcs"
> http://www.cgal.org/Manual/3.3/examples/Boolean_set_operations_2/circle_segment.cpp
>
> the example result looks like
> http://img138.imageshack.us/img138/5940/goodresultsrf7.jpg
>
> and I played a little and I got another one like
> http://img229.imageshack.us/img229/1839/pcbhy4.jpg
>
>
> Now I would like to do offsetting on this polygons. First I went trough
> chapter "Chapter 19 2D Straight Skeleton and Polygon Offsetting" and
> compiled and executed the example
> http://www.cgal.org/Manual/3.3/examples/Straight_skeleton_2/Straight_skeleton_2.cpp
>
> First thing I noticed that different kernel configuration is used than
> in the Boolean operations example. Then I noticed I can "feed"
> Straight_skeleton_builder_2 (enter_contour method) only with the points
> array that have some orientation. The same goes for the
> compute_outer_frame_margin helper method.
>
> My polygons are constructed with line and arc segments. Lines don't
> present any problem, but is there any way to feed the algorithm with arc
> segments? If not, is there any smart way to dissect arcs into many small
> line segments using CGAL? I know that this way I would get huge amount
> of vertexes. Is there any smarter way?
>
> Best regards,
> Marko Kukovec
>
> --
> You are currently subscribed to cgal-discuss.
> To unsubscribe or access the archives, go to
> https://lists-sop.inria.fr/wws/info/cgal-discuss