CGAL users discussion list

[Philipp Moeller <>]

trblair 
<>
 writes:

> Hi all,
>
> I'm trying to use the Surface Mesh Simplification algorithm but I get a huge
> list of errors when I try to compile.  From all of the examples in the
> documentation and everything that I have found in the forums I think that I
> have the code set up right. 
>
> I'm thinking that I may be missing something in the set up of my
> Polyhedron_3 but I'm not sure.
> I'm really at a loss here.  Any help would be greatly appreciated.
>
>  I've attached a link to my code as well as the log with build errors. 
>
> http://pastie.org/5557921#3 <http://pastie.org/5557921#3> </
> a> simplification_error.txt
> <http://cgal-discuss.949826.n4.nabble.com/file/n4656414/simplification_error.txt>
>    

You are sure this is the complete code? 

I've tried compiling it and the errors start at line 40, where triangles
is not declared. I suppose this line should be 

    float*** triangles = ...

Those kind of missing declarations continue for a while. The first error
related to CGAL is the undeclared SMS. I suppose you want to add a line
like:

    namespace SMS = CGAL::Surface_mesh_simplification; 

After you add that you only need to correct the include order:
edge_collapse.h needs to be included after
HalfedgeGraph_Polyhedron_3.h. (Odd, I know).

e.g.

    #include <cstdlib>
    #include <stdlib.h>
    #include <CGAL/Simple_cartesian.h>
    #include <CGAL/Polyhedron_incremental_builder_3.h>
    #include <CGAL/Polyhedron_3.h>
    #include <CGAL/Polyhedron_items_with_id_3.h>
    #include <CGAL/Surface_mesh_simplification/HalfedgeGraph_Polyhedron_3.h>
    #include <CGAL/Surface_mesh_simplification/edge_collapse.h>
    #include 
<CGAL/Surface_mesh_simplification/Policies/Edge_collapse/Count_ratio_stop_predicate.h>

After that all error are your own :)

HTH,
Philipp