/**
 *  \file AttributeSingletonScore.h
 *  \brief A score based on the unmodified value of an attribute.
 *
 *  Copyright 2007-2010 IMP Inventors. All rights reserved.
 */

#ifndef IMPCORE_ATTRIBUTE_SINGLETON_SCORE_H
#define IMPCORE_ATTRIBUTE_SINGLETON_SCORE_H

#include "core_config.h"
#include <IMP/SingletonScore.h>
#include <IMP/Pointer.h>
#include <IMP/UnaryFunction.h>

IMPCORE_BEGIN_NAMESPACE

//! Apply a function to an attribute.
/** This Score scores a particle by passing an attribute value directly
    to a UnaryFunction.
 */
class IMPCOREEXPORT AttributeSingletonScore : public SingletonScore
{
  IMP::internal::OwnerPointer<UnaryFunction> f_;
  FloatKey k_;
public:
  //! Apply function f to attribete k
  AttributeSingletonScore(UnaryFunction *f, FloatKey k);
  IMP_SIMPLE_SINGLETON_SCORE(AttributeSingletonScore);
};

IMPCORE_END_NAMESPACE

#endif  /* IMPCORE_ATTRIBUTE_SINGLETON_SCORE_H */