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[魏华祎 <>]

Hi, there,

   I write a template function to use Geomview_stream to show a structure quad mesh. 

  typedef CGAL::Exact_predicates_inexact_constructions_kernel K;

  typedef CGAL::Structure_quadrangulation_2<K> Grid_2;

  ....

  Grid_2  strgrid;

  gv<<strgrid;

 But there exist some errors when I compile it: 

   " request for member ‘rows’ in ‘quad’, which is of non-class type ‘const char [11]’ "

   "request for member ‘cols’ in ‘quad’, which is of non-class type ‘const char [11]’ "

  ..... 

But for my structure quad mesh class, it has  'rows()'  and 'cols()' as its memeber functions. Please help me to fix it. Thanks.

Best 

Huayi

PS: the following code is the my Geomview_stream code:

template<class SQuad >

void

show_quad(Geomview_stream &gv,const SQuad & quad)

{

    // Header.

    gv.set_ascii_mode();

    gv << "( geometry " << gv.get_new_id("quadrangulation")

       << "{ appearance { linewidth "

       << gv.get_line_width()<<" "<<"+edge"<<" "<<"-face"

       <<" }{MESH \n"

       << quad.cols() <<"\t"<<  quad.rows()<<"\n";

    for(int i = 0; i < quad.rows(); i++)

    {

        for(int j = 0; j < quad.cols(); j++)

        {

            gv<<quad.point(i,j)<<"\t";

        }

        gv<<"\n";

    }

    // Footer.

    gv << "}})";

}

template<class SQuad >

Geomview_stream&

operator<<( Geomview_stream &gv, const SQuad & quad)

{

    bool ascii_bak = gv.get_ascii_mode();

    bool raw_bak = gv.set_raw(true);

    show_quad(gv, quad);

    gv.set_raw(raw_bak);

    gv.set_ascii_mode(ascii_bak);

    return gv;

}