ILPBondOrderStrategy.h

Go to the documentation of this file.

#ifndef BALL_STRUCTURE_BONDORDERS_ILPBONDORDERSTRATEGY_H
#define BALL_STRUCTURE_BONDORDERS_ILPBONDORDERSTRATEGY_H

#ifndef BALL_STRUCTURE_BONDORDERS_BONDORDERASSIGNMENTSTRATEGY_H
# include <BALL/STRUCTURE/BONDORDERS/bondOrderAssignmentStrategy.h>
#endif

#ifndef BALL_STRUCTURE_BONDORDERS_BONDORDERASSIGNMENT_H
# include <BALL/STRUCTURE/BONDORDERS/bondOrderAssignment.h>
#endif
// forward declaration for lp_solve
struct _lprec;
typedef struct _lprec lprec;

namespace BALL
{
  class ILPBondOrderStrategy
    : public BondOrderAssignmentStrategy
  {
    public:
      ILPBondOrderStrategy(AssignBondOrderProcessor* parent);
      virtual ~ILPBondOrderStrategy();

      virtual void clear();
      virtual void init();

      virtual bool readOptions(const Options& options);
      virtual void setDefaultOptions();

      virtual boost::shared_ptr<BondOrderAssignment> computeNextSolution();

    protected:
      bool valid_;

      // Vector for mapping from variable indices onto free bonds in the
      // order used by the ILP
      std::vector<Bond*> index_to_free_bond_;

      // number of bond variables in the ILP
      Position number_of_free_bonds_;

      // Constant penalty (fixed bonds)
      float const_penalty_;

      // flag indicating whether constraints need to be added
      bool first_solution_;

      // the ilp
      lprec* ilp_;
  };
}
#endif // BALL_STRUCTURE_BONDORDERS_ILPBONDORDERSTRATEGY_H