CGAL users discussion list

[Andrew Cunningham <>]

Hi Sebastien,
Thanks,  but I worked it all out. I realize it's a never-ending job
but examples of the various PMP split/clip APIs would have shortened
the learning curve somewhat.

Andrew

On Tue, Dec 8, 2020 at 12:46 AM Sebastien Loriot <> 
wrote:
>
> Hi Andrew!
>
> do you want to see code or would you be more interested in an
> interactive live demo of what you can do?
>
> Best regards,
>
> Sebastien.
>
> On 12/4/20 11:16 PM, Andrew Cunningham wrote:
> > Hi Andreas,
> > No, it's not much of a major issue. Our 3D coordinates are 'float' but
> > it's easy enough to use double when creating CGAL structures.
> >
> > I would be more interested in seeing some examples of the use of "PMP
> > split" algorithms.
> >
> > Andrew
> >
> > On Thu, Dec 3, 2020 at 1:46 AM Andreas Fabri
> > <> wrote:
> >> Hi Andrew,
> >>
> >> Is float what you use in your applications?   Adding support for it
> >> would not be a major issue,
> >> but you are the first user who requests that.
> >>
> >> Best,
> >>
> >> Andreas
> >>
> >> On 12/2/2020 10:33 PM, Andrew Cunningham wrote:
> >>> The issue can be resolved by using the <double> kernel. That's an
> >>> acceptable solution for me but does point out the difficulty of
> >>> template based programming when error messages can be obscure to say
> >>> the least.
> >>>
> >>> On Wed, Dec 2, 2020 at 10:16 AM Andrew Cunningham 
> >>> <> wrote:
> >>>> The error from the Visual C++ compiler ( 2019) is similar ( this is
> >>>> not a Intel Compiler issue)
> >>>>
> >>>> 1>D:\CGAL-5.1\include\CGAL/NT_converter.h(33,1): error C2440:
> >>>> '<function-style-cast>': cannot convert from 'const NT1' to 'NT2'
> >>>> 1>        with
> >>>> 1>        [
> >>>> 1>            NT1=CGAL::Lazy_exact_nt<CGAL::Gmpq>
> >>>> 1>        ]
> >>>> 1>        and
> >>>> 1>        [
> >>>> 1>            NT2=float
> >>>> 1>        ]
> >>>> 1>D:\CGAL-5.1\include\CGAL/NT_converter.h(33,19): message : No
> >>>> user-defined-conversion operator available that can perform this
> >>>> conversion, or the operator cannot be called
> >>>> 1>D:\CGAL-5.1\include\CGAL/NT_converter.h(32): message : while
> >>>> compiling class template member function 'NT2
> >>>> CGAL::NT_converter<CGAL::Lazy_exact_nt<CGAL::Gmpq>,NT2>::operator
> >>>> ()(const NT1 &) const'
> >>>>
> >>>> On Wed, Dec 2, 2020 at 10:06 AM Andrew Cunningham 
> >>>> <> wrote:
> >>>>> Hi,
> >>>>> I am trying to use
> >>>>>
> >>>>> void CGAL::Polygon_mesh_processing::split ( TriangleMesh &  tm,
> >>>>> const Plane_3 &  plane,
> >>>>> const NamedParameters &  np )
> >>>>>
> >>>>> There are no examples in 5.1 for this API.
> >>>>>
> >>>>>
> >>>>> When I do try and compile my code using this API and a <float> kernel
> >>>>> I am getting an error message
> >>>>>
> >>>>> using K = CGAL::Simple_cartesian< float >;
> >>>>> using Point_3                  = K::Point_3;
> >>>>> using Mesh                     = CGAL::Surface_mesh< Point_3 >;
> >>>>> using Plane                     = K::Plane_3;
> >>>>>
> >>>>>
> >>>>> CGAL/NT_converter.h(33): error : no suitable conversion function from
> >>>>> "const CGAL::Lazy_exact_nt<CGAL::Gmpq>" to "float" exists
> >>>>>
> >>>>> I am using the Intel 19.1 C++ compiler.
> >>>>>
> >>>>> Andrew
> >> --
> >> Andreas Fabri, PhD
> >> Chief Officer, GeometryFactory
> >> Editor, The CGAL Project
> >>
> >>
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> >>
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