quadraticBondStretch.h

// -*- Mode: C++; tab-width: 2; -*-
// vi: set ts=2:
//
// $Id: quadraticBondStretch.h,v 1.18 2005/12/23 17:01:54 amoll Exp $
//
 
#ifndef BALL_MOLMEC_PARAMETER_QUADRATICBONDSTRETCH_H
#define BALL_MOLMEC_PARAMETER_QUADRATICBONDSTRETCH_H

#ifndef BALL_FORMAT_PARAMETERSECTION_H
# include <BALL/FORMAT/parameterSection.h>
#endif

#ifndef BALL_MOLMEC_PARAMETER_ATOMTYPES_H
# include <BALL/MOLMEC/PARAMETER/atomTypes.h>
#endif

namespace BALL 
{
  class BALL_EXPORT QuadraticBondStretch 
    : public ParameterSection
  {
    public:

    enum 
    {
      UNKNOWN
    };

    struct BALL_EXPORT Values 
    {
      float r0;
      float k;
    };

    struct BALL_EXPORT Data
    {
      Atom::StaticAtomAttributes* atom1;
      Atom::StaticAtomAttributes* atom2;
      Values  values;
    };


    QuadraticBondStretch();

    virtual ~QuadraticBondStretch() ;

    virtual void clear() ;

    virtual bool extractSection(ForceFieldParameters& parameters, const String& section_name);

    virtual bool extractSection(Parameters& parameters, const String& section_name);

    bool hasParameters(Atom::Type I, Atom::Type J) const;
    
    QuadraticBondStretch::Values getParameters
      (Atom::Type I, Atom::Type J) const;
    
    bool assignParameters
      (QuadraticBondStretch::Values& parameters, 
       Atom::Type I, Atom::Type J) const;   

    protected:

    Size                  number_of_atom_types_;

    float*                k_;
    
    float*                r0_;

    bool*                 is_defined_;
      
    String*               names_;
  };
} // namespace BALL

#endif // BALL_MOLMEC_PARAMETER_QUADRATICBONDSTRETCH_H

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