CGAL users discussion list

[Andreas Fabri <>]

One way to find out where the implementation details are
is stepping though it in a debugger.

best,

andreas



On 01/02/2016 10:46, s_gandhi wrote:
> Hello Marc,
>
> Thank you for the reply.
>
> I am still not able to figure out "where is the definition?"
>
> This might be very naive question. This is first time I am working with
> proper templated code. So having all sorts of trouble in finding the
> definitions.
>
> Can you guide me through one function call?
>
> In case of /collinear_are_ordered_along_line_2/,
> where would be the implementation? I had a look at
> /CGAL/Kernel/interface_macros.h/. It simply defines it as a predicate. Now,
> in my case, I am using /Exact_predicates_inexact_constructions_kernel.h/,
> which in turn includes /Simple_cartecian.h/. /Simple_cartecian.h/ has
> defined the macro. But this does not seem to end.
>
> Where is definition? I mean, at some point one has to do something like:
>
> bool collinear(Point_2& p1, Point_2& p2, Point_2& p3)
> {
>   return ((     
> (p2.x()-p1.x())*(p3.y()-p2.y())-(p3.x()-p2.x())*(p2.y()-p1.y()) )
> ==  0);
> }
> in case of collinear() function returning true or false.
>
> If you think this is a 'common sense' question, please guide me to
> respective book/tutorial/man-page.
> I appreciate your time investment.
>
> Regards,
> S. Gandhi
>
>
>
>
>
> --
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> http://cgal-discuss.949826.n4.nabble.com/Learning-CGAL-where-is-source-code-tp4661547p4661550.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