CGAL users discussion list

[Simon Giraudot <>]

Le 01/10/2015 16:44, klissa a écrit :
> Hi all,
>
> I am a new user of CGAL. I would like to mesh and import, from a 3D point
> cloud, a model.
>
> Following the user manual, I decided to try the "Surface reconstruction
> using" the given example.
> I obtained the following message:
> In file included from
> /home/klissa/Desktop/data/data_CGAL/surface_rec_from_point.cpp:11:0:
> /usr/local/include/CGAL/Poisson_reconstruction_function.h: In member
> function ‘bool
> CGAL::Poisson_reconstruction_function<Gt>::compute_implicit_function(bool)’:
> /usr/local/include/CGAL/Poisson_reconstruction_function.h:537:13: error:
> ‘Eigen_solver_traits’ does not name a type
> typedef
> Eigen_solver_traits<Eigen::ConjugateGradient&lt;Eigen_sparse_symmetric_matrix&lt;double>::EigenType>
> > Solver;
> ^
> /usr/local/include/CGAL/Poisson_reconstruction_function.h:538:38: error:
> ‘Solver’ was not declared in this scope
> return compute_implicit_function<Solver>(Solver(), smoother_hole_filling);
> ^
> make[2]: ***
> [CMakeFiles/surface_rec_from_point.dir/surface_rec_from_point.cpp.o] Error 1
> make[1]: *** [CMakeFiles/surface_rec_from_point.dir/all] Error 2
> make: *** [all] Error 2
> I have seen other message about the same topic, but I couldn't solve mine.
> I am running the last version of CGAL on Ubuntu 14.04.3 (I am not an expert
> user!).
> Can anyone help me?
> Kind regards,
>
> Carolina
>
>
>
> --
> View this message in context: 
> http://cgal-discuss.949826.n4.nabble.com/Surface-reconstruction-tp4661178.html
> Sent from the cgal-discuss mailing list archive at Nabble.com.
Hello,

From the error you are getting, I am guessing you do not have the Eigen 
library installed. You need this library for the Surface Reconstruction 
package: http://doc.cgal.org/4.7/Manual/installation.html#thirdpartyEigen
Eigen should be easy to install on Ubuntu (probably from the official 
repository although I did not check).
If you already have Eigen, you should check if you are correctly 
including it at compilation.

(If you are using a CMakeList, this should do it:

  find_package( Eigen3 3.1.0 )
  if( EIGEN3_FOUND )
    include( ${EIGEN3_USE_FILE} )
  endif()

)

Let me know if you still have trouble!

Best,

--
Simon Giraudot, PhD
R&D Engineer
Geometry Factory - http://geometryfactory.com/