CGAL users discussion list

[Andreas Fabri <>]

Have a look at the demo of the chapter
http://doc.cgal.org/4.8/Manual/packages.html#PkgBoundingVolumesSummary

It visualizes min circle and min ellipse.

andreas


On 25/02/2016 06:57, tcscott wrote:
> Dear All
>
> Thanks for the feedback and clarification so far.
>
> I am trying other examples in CGAL.  I tried Min_circle_2
>
> I would get an executible a.out from:
>
> g++ -L/opt/local/lib -lcgal -I/opt/local/include/ -lgmp -lmpfr
> -L/opt/local/lib/ -lboost_thread-mt min_circle_2.cpp
>
>
> Output:
>
> CGAL::Min_circle_2( |P| = 100, |S| = 2
>    P = {
>      PointC2(98, 0),
>      PointC2(-99, 0),
>      PointC2(94, 0),
>      PointC2(92, 0),
>      PointC2(90, 0),
>      PointC2(-89, 0),
>      PointC2(64, 0),
>      PointC2(-85, 0),
>
>        .
>        .
>        .
>
>      PointC2(80, 0),
>      PointC2(96, 0),
>      PointC2(24, 0),
>      PointC2(-83, 0),
>      PointC2(-73, 0),
>      }
>    S = {
>      PointC2(98, 0),
>      PointC2(-99, 0),
>      }
>    circle = CGAL::Optimisation_circle_2( PointC2(-0.5, 0), 9702.25)
> )
>
> ===
>
> I would get a similar result from Min_ellipse_2
>
> Question is: how to visualize the results?
>
> My earlier and very first result with Convex_Hull could be done in
> gnuplot because the output were x-y pairs but these  are CGAL data
> structures.
>
> I found mention of the Qt Graphics View Framework:
>
> http://doc.cgal.org/Manual/3.4/doc_html/cgal_manual/GraphicsView/Chapter_main.html
>
> but I need a concrete example.
>
> If I need additional software, what do I need to install?
>
> What is the simplest way to visualize these results?
>
> best wishes
>
> Tony
>
>
>
>
> --
> View this message in context: 
> http://cgal-discuss.949826.n4.nabble.com/visualizing-CGAL-objects-tp4661624.html
> Sent from the cgal-discuss mailing list archive at Nabble.com.

--
Andreas Fabri, PhD
Chief Officer, GeometryFactory
Editor, The CGAL Project

phone: +33.492.954.912    skype: andreas.fabri