CGAL users discussion list

[Jason Park <>]

I was trying to triangulate the non-convex polygon. But when I try to use
Constrained_Delaunay_triangulation_2, it seems that it doesn't work well.
Maybe because this polygon is non-convex shape. So, I decide to partitioning
the polygon to split into convex polygons. and it works!

But when I add some constraints(boundary vertices of polygons), some build
error occurs.
Here's my code and errors. 

Thanks in advance! 

Best Regards,
Jason Park. 

for(int i=0; i<partition_polys.size(); ++i){
        Polygon_2* poly_temp = &amp;partition_polys[i];
        CDT cdt_temp;
        for(int j=0; j&lt;poly_temp->size()-1; ++j){
                cdt_temp.insert_constraint(poly_temp->vertex(j), 
poly_temp->vertex[j+1]);
        }
                
}


1>E:\Libraries\CGAL-4.2\include\CGAL/Polygon_2.h(421): error C2678: binary
'+' : no operator found which takes a left-hand operand of type
'std::_List_const_iterator<_Mylist>' (or there is no acceptable conversion)
1>          with
1>          [
1>             
_Mylist=std::_List_val<CGAL::Point_2&lt;CGAL::Epick>,std::allocator<CGAL::Point_2&lt;CGAL::Epick>>>
1>          ]
1>          E:\Libraries\CGAL-4.2\include\CGAL/MP_Float.h(107): could be
'CGAL::MP_Float CGAL::operator +(const CGAL::MP_Float &,const CGAL::MP_Float
&)'
1>         
E:\Libraries\CGAL-4.2\include\CGAL/Modular_arithmetic/Residue_type.h(37): or  
    
'CGAL::Residue CGAL::operator +(const CGAL::Residue &)'
1>          while trying to match the argument list
'(std::_List_const_iterator<_Mylist>, size_t)'
1>          with
1>          [
1>             
_Mylist=std::_List_val<CGAL::Point_2&lt;CGAL::Epick>,std::allocator<CGAL::Point_2&lt;CGAL::Epick>>>
1>          ]
1>          E:\Libraries\CGAL-4.2\include\CGAL/Polygon_2.h(421) : while
compiling class template member function 'const CGAL::Point_2<R_>
&CGAL::Polygon_2<Traits_P,Container_P>::vertex(size_t) const'
1>          with
1>          [
1>              R_=CGAL::Epick,
1>              Traits_P=CGAL::Epick,
1>              Container_P=std::list<CGAL::Point_2&lt;CGAL::Epick>>
1>          ]
1>          main.cpp(49) : see reference to class template instantiation
'CGAL::Polygon_2<Traits_P,Container_P>' being compiled
1>          with
1>          [
1>              Traits_P=CGAL::Epick,
1>              Container_P=std::list<CGAL::Point_2&lt;CGAL::Epick>>
1>          ]



--
View this message in context: 
http://cgal-discuss.949826.n4.nabble.com/Triangulation-of-non-convex-polygon-tp4657324.html
Sent from the cgal-discuss mailing list archive at Nabble.com.