CGAL users discussion list

[Samuel Gundry <>]

A CGAL::Uncertain_conversion_exception exception is being thrown but
not caught for the following intersection:

Ray_3 r(Point_3(13.6603, -5, 10), Point_3(60.6218, -8.88178e-016, -35));
const Point_3p_a(38, 90, 0.5);
const Point_3p_b(38, 92, 0.3);
const Point_3p_c(36, 92, 0.3);

Triangle_3 t(p_a, p_b, p_c);                    
CGAL::Object obj = CGAL::intersection(r, t);  // not caught exception



We're using the kernel:
CGAL::Exact_predicates_inexact_constructions_kernel, with MSVC9, CGAL
3.5.1.

Thanks for any help.
Sam

In Quotient.h:
template < typename NT >
struct Split_double
{
  void operator()(double d, NT &num, NT &den) const
  {
    num = NT(d);
    den = 1;
  }
};

Call stack:
 terrain_interaction.exe!std::vector<short,std::allocator<short>
>::insert()  + 0x7d bytes       C++
terrain_interaction.exe!CGAL::MP_Float::construct_from_builtin_fp_type<double>()
 + 0x1b5 bytes  C++
terrain_interaction.exe!CGAL::MP_Float::MP_Float()  + 0x46 bytes        C++
>       
> terrain_interaction.exe!CGAL::Split_double<CGAL::MP_Float>::operator()(double
>  d=-35.000000000000000, CGAL::MP_Float & num={...}, CGAL::MP_Float & 
> den={...})  Line 65 + 0x11 bytes      C++
terrain_interaction.exe!CGAL::Quotient<CGAL::MP_Float>::Quotient<CGAL::MP_Float>(const
double & n=-35.000000000000000)  Line 89        C++
terrain_interaction.exe!CGAL::NT_converter<double,CGAL::Quotient<CGAL::MP_Float>
>::operator()(const double & a=-35.000000000000000)  Line 39 + 0xc
bytes   C++
terrain_interaction.exe!CGAL::Cartesian_converter<CGAL::Type_equality_wrapper<CGAL::Cartesian_base_no_ref_count<double,CGAL::Filtered_kernel<CGAL::Simple_cartesian<double>
> >,CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> >
>,CGAL::Simple_cartesian<CGAL::Quotient<CGAL::MP_Float>
>,CGAL::NT_converter<double,CGAL::Quotient<CGAL::MP_Float> >
>::operator()(const
CGAL::Point_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > >
& a={...})  Line 203 + 0x15 bytes       C++
terrain_interaction.exe!CGAL::Cartesian_converter<CGAL::Type_equality_wrapper<CGAL::Cartesian_base_no_ref_count<double,CGAL::Filtered_kernel<CGAL::Simple_cartesian<double>
> >,CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> >
>,CGAL::Simple_cartesian<CGAL::Quotient<CGAL::MP_Float>
>,CGAL::NT_converter<double,CGAL::Quotient<CGAL::MP_Float> >
>::operator()(const
CGAL::Ray_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > > &
a={...})  Line 238 + 0x1c bytes C++
terrain_interaction.exe!CGAL::Filtered_predicate<CGAL::CommonKernelFunctors::Do_intersect_3<CGAL::Simple_cartesian<CGAL::Quotient<CGAL::MP_Float>
> >,CGAL::CommonKernelFunctors::Do_intersect_3<CGAL::Simple_cartesian<CGAL::Interval_nt<0>
> >,CGAL::Cartesian_converter<CGAL::Type_equality_wrapper<CGAL::Cartesian_base_no_ref_count<double,CGAL::Filtered_kernel<CGAL::Simple_cartesian<double>
> >,CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> >
>,CGAL::Simple_cartesian<CGAL::Quotient<CGAL::MP_Float>
>,CGAL::NT_converter<double,CGAL::Quotient<CGAL::MP_Float> >
>,CGAL::Cartesian_converter<CGAL::Type_equality_wrapper<CGAL::Cartesian_base_no_ref_count<double,CGAL::Filtered_kernel<CGAL::Simple_cartesian<double>
> >,CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> >
>,CGAL::Simple_cartesian<CGAL::Interval_nt<0>
>,CGAL::NT_converter<double,CGAL::Interval_nt<0> >
>,1>::operator()<CGAL::Triangle_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double>
> >,CGAL::Ray_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> >
> >(const 
> >CGAL::Triangle_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double>
> > & a1={...}, const
CGAL::Ray_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > > &
a2={...})  Line 217 + 0x16 bytes        C++
terrain_interaction.exe!CGAL::do_intersect<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double>
> >(const 
> >CGAL::Triangle_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double>
> > & t={...}, const
CGAL::Ray_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > > &
r={...})  Line 309      C++
terrain_interaction.exe!CGAL::CGALi::intersection<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double>
> >(const 
> >CGAL::Triangle_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double>
> > & t={...}, const
CGAL::Ray_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > > &
r={...}, const CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> >
& k={...})  Line 76 + 0xd bytes C++
terrain_interaction.exe!CGAL::CommonKernelFunctors::Intersect_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double>
> >::operator()<CGAL::Triangle_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double>
> >,CGAL::Ray_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> >
> >(const 
> >CGAL::Triangle_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double>
> > & t1={...}, const
CGAL::Ray_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > > &
t2={...})  Line 2358 + 0x3a bytes       C++
terrain_interaction.exe!CGAL::intersection<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double>
> >(const CGAL::Ray_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double>
> > & r={...}, const
CGAL::Triangle_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double>
> > & t={...})  Line 161 + 0x19 bytes   C++