/home/andreas/src/svn/mapnik/include/mapnik/vertex.hpp

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/*****************************************************************************
 * 
 * This file is part of Mapnik (c++ mapping toolkit)
 *
 * Copyright (C) 2006 Artem Pavlenko
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *****************************************************************************/
//$Id: vertex.hpp 39 2005-04-10 20:39:53Z pavlenko $

#ifndef VERTEX_HPP
#define VERTEX_HPP

#include <iostream>
#include <sstream>

namespace mapnik 
{
    enum CommandType {
        SEG_END   =0,
        SEG_MOVETO=1,
        SEG_LINETO=2,
        SEG_CLOSE =3
    };
    
    template <typename T,int dim>
    struct vertex {
        typedef T type;
    };
    
    template <typename T>
    struct vertex<T,2> 
    {
        typedef T type;
        T x;
        T y;
        unsigned cmd;
        vertex() 
            : x(0),y(0),cmd(SEG_END) {}
        vertex(T x,T y,unsigned cmd)
            : x(x),y(y),cmd(cmd) {}

        template <typename T2>
        vertex(const vertex<T2,2>& rhs)
            : x(type(rhs.x)),
              y(type(rhs.y)),
              cmd(rhs.cmd) {}
        
        template <typename T2> vertex<T,2> operator=(const vertex<T2,2>& rhs)
        {
            if ((void*)this == (void*)&rhs)
            {
                return *this;
            }
            x=type(rhs.x);
            y=type(rhs.y);
            cmd=rhs.cmd;
            return *this;
        }       
    };
    
    typedef vertex<double,2> vertex2d;
    typedef vertex<int,2> vertex2i;

    
    template <class charT,class traits,class T,int dim>
    inline std::basic_ostream<charT,traits>&
    operator << (std::basic_ostream<charT,traits>& out,
                 const vertex<T,dim>& c);

    template <class charT,class traits,class T>
    inline std::basic_ostream<charT,traits>&
    operator << (std::basic_ostream<charT,traits>& out,
                 const vertex<T,2>& v)
    {
        std::basic_ostringstream<charT,traits> s;
        s.copyfmt(out);
        s.width(0);
        s<<"vertex2("<<v.x<<","<<v.y<<",cmd="<<v.cmd<<" )";
        out << s.str();
        return out;
    }

    template <class charT,class traits,class T>
    inline std::basic_ostream<charT,traits>&
    operator << (std::basic_ostream<charT,traits>& out,
                 const vertex<T,3>& v)
    {
        std::basic_ostringstream<charT,traits> s;
        s.copyfmt(out);
        s.width(0);
        s<<"vertex3("<<v.x<<","<<v.y<<","<<v.z<<",cmd="<<v.cmd<<")";
        out << s.str();
        return out;
    } 

}

#endif // VERTEX_HPP

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