CGAL users discussion list

[Martin Baeker <>]

The function

CGAL::to_double()

converts CGAL exact number types to doubles.

Martin.

> Hi Efi,
> 
> > p.x() and p.y() return the Cartesian /x/-coordinate and the Cartesian  
> > y-coordinate of a point p respectively.
> > p.hx(), p.hy(), and p.hw() return the homogeneous /x/-coordinate, the 
> > homogeneous y-coordinate, and the homogenizing coordinate respectively. //
> 
> Thanks for reply.
> As you suggested, hx()/hy() function works. But its output is hx/hw format
> even on x()/y() function like -1/1, 5/4 shown below. 
> There is example code and result.
> 
> I would like to get x/y coordinate with integer or double type variable.
> Let me know any suggestion.
> 
> === Example Code ===
> #include "bso_rational_nt.h"
> #include <CGAL/Cartesian.h>
> #include <CGAL/Boolean_set_operations_2.h>
> struct Kernel : public CGAL::Cartesian<Number_type> {};
> 
> typedef Kernel::Point_2                                 Point_2;
> 
> int main ()
> {
>   Point_2 A(-1, 1.25);
>   std::cout << "A = (" << A.hx() << ":" << A.hy() << ")" << std::endl;
> 
>   return 0;
> }
> 
> == Result ==
> A = (-1/1:5/4)
> 
> Kenji
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