CGAL users discussion list

[Mahmood Naderan <>]

 >are you sure Qt_widget can handle/draw that type?

I am asking too. Qt_widget can draw a segment or circle, but when I call it for a conic arc the error (maybe) means that there is no overload operator which take a right hand operand of type conic arc. I am not sure. That is why I asked.

 

 >I presume that the Conic_arc_2 you're using is a typedef of Traits_2::Curve_2

yes, it is of that type

 

-------------------
Mahmood Naderan

 

 

----- Original Message ----
From: Ashwin Nanjappa <>
To:
Sent: Monday, April 21, 2008 5:32:58 AM
Subject: Re: [cgal-discuss] drawing a conic arc using Qt_widget

Mahmood Naderan wrote:
> [...] Now if I want to draw
> a conic arc:
>      Rat_circle_2        Circ2;
>      Conic_arc_2        con;
>      Point_2            s, e;
>      *w << Conic_arc_2 ( Circ2, CGAL::COUNTERCLOCKWISE, s, e );
> At this line I get:
> error C2678: binary '<<' : no operator found which takes a left-hand
> operand of type 'CGAL::Qt_widget' (or there is no acceptable conversion)
> 
> Am I right? How can I draw a conic arc from one point to another point
> (with a given center)?

I haven't used Qt_widget, so I might be wrong here ... are you sure
Qt_widget can handle/draw that type? From your earlier emails, I presume
that the Conic_arc_2 you're using is a typedef of Traits_2::Curve_2


On referring to the documentation for Qt_widget, I see that Curve_2 isn't
listed as a supported type:
<http://www.cgal.org/Manual/3.3/doc_html/cgal_manual/Qt_widget_ref/Class_Qt_widget.html>

~ash
--
You are currently subscribed to cgal-discuss.
To unsubscribe or access the archives, go to
https://lists-sop.inria.fr/wws/info/cgal-discuss

---

Be a better friend, newshound, and 
know-it-all with Yahoo! Mobile.  Try it now.