/**
 *  \file IMP/core/RigidBodyMover.h
 *  \brief A mover that transform a rigid body
 *
 *  Copyright 2007-2013 IMP Inventors. All rights reserved.
 *
 */

#ifndef IMPCORE_RIGID_BODY_MOVER_H
#define IMPCORE_RIGID_BODY_MOVER_H

#include <IMP/core/core_config.h>
#include "MonteCarlo.h"
#include "MonteCarloMover.h"
#include <IMP/algebra/Vector3D.h>
#include <IMP/algebra/Transformation3D.h>
#include <IMP/SingletonContainer.h>
#include <IMP/core/rigid_bodies.h>
IMPCORE_BEGIN_NAMESPACE

//! Modify the transformation of a rigid body
/** The transformation of a rigid body is moved in a ball of given
    size. The probability distribution is uniform over the ball.
    \see MonteCarlo
 */
class IMPCOREEXPORT RigidBodyMover : public MonteCarloMover
{
  algebra::Transformation3D last_transformation_;
  Float max_translation_;
  Float max_angle_;
  ParticleIndex pi_;
public:
  RigidBodyMover(Model *m, ParticleIndex pi,
                 Float max_translation,
                 Float max_rotation);

#ifndef IMP_DOXYGEN
  /** The rigid body is rotated and translated to move
      \param[in] d   the rigid body decorator
      \param[in] max_translation maximum translation during a step
      \param[in] max_rotation maximum rotation angle in radians
   */
  RigidBodyMover(RigidBody d,Float max_translation,
                 Float max_rotation);
#endif

  void set_maximum_translation(Float mt) {
    IMP_USAGE_CHECK(mt > 0, "Max translation must be positive");
    max_translation_=mt;
  }

  void set_maximum_rotation(Float mr) {
    IMP_USAGE_CHECK(mr > 0, "Max rotation must be positive");
    max_angle_=mr;
  }

  Float get_maximum_translation() const {
    return max_translation_;
  }

  Float get_maximum_rotation() const {
    return max_angle_;
  }

protected:
  virtual kernel::ModelObjectsTemp do_get_inputs() const IMP_OVERRIDE;
  virtual MonteCarloMoverResult do_propose() IMP_OVERRIDE;
  virtual void do_reject() IMP_OVERRIDE;
  IMP_OBJECT_METHODS(RigidBodyMover);
};

IMPCORE_END_NAMESPACE

#endif  /* IMPCORE_RIGID_BODY_MOVER_H */