shells/fem/sedgeCompare.h

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// -*- C++ -*- 
//
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
//                                   Fehmi Cirak
//                        California Institute of Technology
//                           (C) 2004 All Rights Reserved
//
// <LicenseText>
//
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
#ifndef SEDGECOMPARE_H
#define SEDGECOMPARE_H
#include <functional>


namespace shells {
    struct SEdgeS;

    // Comparisson functor for two edges
    struct SEdgeCompare : 
        public std::binary_function<shells::SEdgeS*, shells::SEdgeS*, bool> 
    {
        bool operator()(shells::SEdgeS *e1, shells::SEdgeS *e2);
    };


    
    struct SEdgeWithTwoElements :
        public std::unary_function<shells::SEdgeS*, bool>
    {
        // if edge has two elements attached return true, else false 
        bool operator()(shells::SEdgeS *edge) const;
    };
}
#endif

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