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Re: [cgal-discuss] compiling error of "linear_least_squares_fitting_3" under :Exact_predicates_exact_constructions_kernel
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- From: Kai WANG <>
- To:
- Subject: Re: [cgal-discuss] compiling error of "linear_least_squares_fitting_3" under :Exact_predicates_exact_constructions_kernel
- Date: Thu, 6 Oct 2011 23:44:58 +0800
I'm sorry that I still don't quite understand how to modify it. Could you please give a detailed explanation on the way to add a "sqrt" function please? For example, given the following simple program which has complile error, where should I add the "sqrt" function please?
Thanks very much for ur help!
typedef CGAL::Exact_predicates_exact_constructions_kernel K;
typedef K::Line_3 Line;
typedef K::Plane_3 Plane;
typedef K::Point_3 Point;
typedef K::Triangle_3 Triangle;
int main(void)
{
std::list<Triangle> triangles;
Point a(1.0,2.0,3.0);
Point b(4.0,0.0,6.0);
Point c(7.0,8.0,9.0);
Point d(8.0,7.0,6.0);
Point e(5.0,3.0,4.0);
triangles.push_back(Triangle(a,b,c));
triangles.push_back(Triangle(a,b,d));
triangles.push_back(Triangle(d,e,c));
Line line;
Plane plane;
// fit plane to whole triangles
linear_least_squares_fitting_3(triangles.begin(),triangles.end(),plane,CGAL::Dimension_tag<2>());
// fit line to triangle vertices
linear_least_squares_fitting_3(triangles.begin(),triangles.end(),line, CGAL::Dimension_tag<0>());
return 0;
}
On Thu, Oct 6, 2011 at 11:31 PM, Sebastien Loriot (GeometryFactory) <> wrote:
the PCA package make use of the square root function, so the underlying
number type in the kernel you are using should have a sqrt function
available.
Sebastien.
kyewong wrote:
Hi,
When I'm using the linear_least_squares_fitting_3 and
CGAL::Exact_predicates_exact_constructions_kernel as kernel, there will be a
compile error as follows.
Could anyone tell me how to modify it if I want to use both of them at the
same time please? Thanks very much!
1>F:\Program Files\CGAL-3.8\include\CGAL/PCA_util.h(132) : error C2665:
'sqrt' : none of the 3 overloads could convert all the argument types
1> F:\Program Files\Microsoft Visual Studio
9.0\VC\include\math.h(581): could be 'long double sqrt(long double)'
1> F:\Program Files\Microsoft Visual Studio
9.0\VC\include\math.h(533): or 'float sqrt(float)'
1> F:\Program Files\Microsoft Visual Studio
9.0\VC\include\math.h(128): or 'double sqrt(double)'
1> while trying to match the argument list
'(CGAL::Lazy_exact_nt<ET_>)'
1> with
1> [
1> ET_=CGAL::Gmpq
1> ]
1> F:\Program
Files\CGAL-3.8\include\CGAL/linear_least_squares_fitting_triangles_3.h(57) :
see reference to function template instantiation 'void
CGAL::internal::assemble_covariance_matrix_3<InputIterator,K>(InputIterator,InputIterator,CGAL::Lazy_exact_nt<ET_>
[],const CGAL::Point_3<R_> &,const K &,const CGAL::Triangle_3<R_> *,const
CGAL::Dimension_tag<dim> &)' being compiled
1> with
1> [
1> InputIterator=std::list<Triangle>::_Iterator<true>,
1> K=CGAL::Epeck,
1> ET_=CGAL::Gmpq,
1> R_=CGAL::Epeck,
1> dim=2
1> ]
1> F:\Program
Files\CGAL-3.8\include\CGAL/linear_least_squares_fitting_3.h(58) : see
reference to function template instantiation 'CGAL::Lazy_exact_nt<ET_>
CGAL::internal::linear_least_squares_fitting_3<InputIterator,Kernel>(InputIterator,InputIterator,CGAL::Plane_3<R_>
&,CGAL::Point_3<R_> &,const CGAL::Triangle_3<R_> *,const K &,const
CGAL::Dimension_tag<dim> &)' being compiled
1> with
1> [
1> ET_=CGAL::Gmpq,
1> InputIterator=std::list<Triangle>::_Iterator<true>,
1> Kernel=CGAL::Epeck,
1> R_=CGAL::Epeck,
1> K=CGAL::Epeck,
1> dim=2
1> ]
1> F:\Program
Files\CGAL-3.8\include\CGAL/linear_least_squares_fitting_3.h(76) : see
reference to function template instantiation 'CGAL::Lazy_exact_nt<ET_>
CGAL::linear_least_squares_fitting_3<InputIterator,Object,CGAL::Epeck,Tag>(InputIterator,InputIterator,Object
&,CGAL::Point_3<R_> &,const Tag &,const Kernel &)' being compiled
1> with
1> [
1> ET_=CGAL::Gmpq,
1> InputIterator=std::list<Triangle>::_Iterator<true>,
1> Object=Plane,
1> Tag=CGAL::Dimension_tag<2>,
1> R_=CGAL::Epeck,
1> Kernel=CGAL::Epeck
1> ]
1> F:\Program
Files\CGAL-3.8\include\CGAL/linear_least_squares_fitting_3.h(93) : see
reference to function template instantiation 'CGAL::Lazy_exact_nt<ET_>
CGAL::linear_least_squares_fitting_3<InputIterator,Object,CGAL::Point_3<R_>,Tag>(InputIterator,InputIterator,Object
&,Point &,const Tag &)' being compiled
1> with
1> [
1> ET_=CGAL::Gmpq,
1> InputIterator=std::list<Triangle>::_Iterator<true>,
1> Object=Plane,
1> R_=CGAL::Epeck,
1> Tag=CGAL::Dimension_tag<2>,
1> Point=CGAL::Point_3<CGAL::Epeck>
1> ]
1> .\linear_least_squares_fitting_triangles_3.cpp(33) : see reference
to function template instantiation 'CGAL::Lazy_exact_nt<ET_>
CGAL::linear_least_squares_fitting_3<std::list<_Ty>::_Iterator<_Secure_validation>,Plane,CGAL::Dimension_tag<dim>>(InputIterator,InputIterator,Object
&,const Tag &)' being compiled
1> with
1> [
1> ET_=CGAL::Gmpq,
1> _Ty=Triangle,
1> _Secure_validation=true,
1> dim=2,
1> InputIterator=std::list<Triangle>::_Iterator<true>,
1> Object=Plane,
1> Tag=CGAL::Dimension_tag<2>
1> ]
--
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Kai WANG
- [cgal-discuss] compiling error of "linear_least_squares_fitting_3" under :Exact_predicates_exact_constructions_kernel, kyewong, 10/06/2011
- Re: [cgal-discuss] compiling error of "linear_least_squares_fitting_3" under :Exact_predicates_exact_constructions_kernel, Sebastien Loriot (GeometryFactory), 10/06/2011
- Re: [cgal-discuss] compiling error of "linear_least_squares_fitting_3" under :Exact_predicates_exact_constructions_kernel, Kai WANG, 10/06/2011
- Re: [cgal-discuss] compiling error of "linear_least_squares_fitting_3" under :Exact_predicates_exact_constructions_kernel, Sebastien Loriot (GeometryFactory), 10/06/2011
- Re: [cgal-discuss] compiling error of "linear_least_squares_fitting_3" under :Exact_predicates_exact_constructions_kernel, Kai WANG, 10/07/2011
- Re: [cgal-discuss] compiling error of "linear_least_squares_fitting_3" under :Exact_predicates_exact_constructions_kernel, Sebastien Loriot (GeometryFactory), 10/07/2011
- Re: [cgal-discuss] compiling error of "linear_least_squares_fitting_3" under :Exact_predicates_exact_constructions_kernel, Kai WANG, 10/07/2011
- Re: [cgal-discuss] compiling error of "linear_least_squares_fitting_3" under :Exact_predicates_exact_constructions_kernel, Sebastien Loriot (GeometryFactory), 10/06/2011
- Re: [cgal-discuss] compiling error of "linear_least_squares_fitting_3" under :Exact_predicates_exact_constructions_kernel, Kai WANG, 10/07/2011
- Re: [cgal-discuss] compiling error of "linear_least_squares_fitting_3" under :Exact_predicates_exact_constructions_kernel, Laurent Rineau (GeometryFactory), 10/07/2011
- Re: [cgal-discuss] compiling error of "linear_least_squares_fitting_3" under :Exact_predicates_exact_constructions_kernel, Kai WANG, 10/07/2011
- Re: [cgal-discuss] compiling error of "linear_least_squares_fitting_3" under :Exact_predicates_exact_constructions_kernel, Sebastien Loriot (GeometryFactory), 10/06/2011
- Re: [cgal-discuss] compiling error of "linear_least_squares_fitting_3" under :Exact_predicates_exact_constructions_kernel, Kai WANG, 10/06/2011
- Re: [cgal-discuss] compiling error of "linear_least_squares_fitting_3" under :Exact_predicates_exact_constructions_kernel, Sebastien Loriot (GeometryFactory), 10/06/2011
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