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[Mahmood NT <>]

Hello,
I have wrote a code using polygon:

    if (! pgn.is_simple())

    {

      std::cerr << "Error - Polygon no. " << i + 1

                << " is not simple." << std::endl;

      return (false);

    }

    // for first polygon (domain) we have to extract boundary point 
    // so that generated random milestones have to fit in domain
    if ( domainFlag ) {

        xMin = pgn.left_vertex_2();
        xMax = pgn.right_vertex_2();
        yMin = pgn.bottom_vertex_2();
        yMax = pgn.top_vertex_2();
        if (fout.is_open()) {
            fout << xMin << xMax << yMin << yMax;

          }
        domainFlag = false;        // for other polygons, we do not need it
    }


during the compilation there is no error at "pgn.is_simple()", but at 
"left_vertex_2()" and others it says:
VVc_demo.cpp: In function `bool read_polygons(const char*, Polygons_list_2&,
   Bbox_2&)':
VVc_demo.cpp:671: error: `left_vertex_2' undeclared (first use this function)
VVc_demo.cpp:671: error: (Each undeclared identifier is reported only once for
   each function it appears in.)
VVc_demo.cpp:672: error: `right_vertex_2' undeclared (first use this function)
VVc_demo.cpp:673: error: `bottom_vertex_2' undeclared (first use this 
function)
VVc_demo.cpp:674: error: `top_vertex_2' undeclared (first use this function)

Why is_simple() does not have problem but others have??

Thanks, Mahmood NT






      
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