//##################################################################################################
//
//   Custom Visualization Core library
//   Copyright (C) 2011-2012 Ceetron AS
//    
//   This library is free software: you can redistribute it and/or modify 
//   it under the terms of the GNU General Public License as published by 
//   the Free Software Foundation, either version 3 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 General Public License at <<http://www.gnu.org/licenses/gpl.html>> 
//   for more details. 
//
//##################################################################################################

#pragma once

namespace cvf {


//==================================================================================================
//
// 
//
//==================================================================================================
class EdgeKey
{
public:
    EdgeKey(uint vertexIdx1, uint vertexIdx2);

    bool            operator==(const EdgeKey& rhs) const;
    bool            operator<(const EdgeKey& rhs) const;

    uint            index1() const    { return m_vertexIdx1; }
    uint            index2() const    { return m_vertexIdx2; }

    int64           toKeyVal() const;

    static EdgeKey  fromkeyVal(int64 edgeKeyVal);

private:
    uint m_vertexIdx1;  // The constructor ensures that index 1 is always the smallest
    uint m_vertexIdx2;  // of the two indices
};


}


