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IMP Reference Guide  develop.182d9373c4,2021/04/12
The Integrative Modeling Platform
IMP::example::ExamplePairScore Class Reference

Apply a harmonic to the distance between two particles. More...

#include <IMP/example/ExamplePairScore.h>

+ Inheritance diagram for IMP::example::ExamplePairScore:

Detailed Description

Apply a harmonic to the distance between two particles.

The source code is as follows:

/**
* \file IMP/example/ExamplePairScore.h
* \brief A Score on the distance between a pair of particles.
*
* Copyright 2007-2021 IMP Inventors. All rights reserved.
*/
#ifndef IMPEXAMPLE_EXAMPLE_PAIR_SCORE_H
#define IMPEXAMPLE_EXAMPLE_PAIR_SCORE_H
#include <IMP/example/example_config.h>
#include <IMP/core/XYZ.h>
#include <IMP/PairScore.h>
#include <IMP/Pointer.h>
IMPEXAMPLE_BEGIN_NAMESPACE
//! Apply a harmonic to the distance between two particles.
/** The source code is as follows:
\include ExamplePairScore.h
\include ExamplePairScore.cpp
*/
class IMPEXAMPLEEXPORT ExamplePairScore : public PairScore {
double x0_, k_;
public:
ExamplePairScore(double x0, double k);
virtual double evaluate_index(Model *m,
const ParticleIndexPair &p,
DerivativeAccumulator *da) const IMP_OVERRIDE;
Model *m, const ParticleIndexes &pis) const IMP_OVERRIDE;
IMP_PAIR_SCORE_METHODS(ExamplePairScore);
IMP_OBJECT_METHODS(ExamplePairScore);
;
};
IMP_OBJECTS(ExamplePairScore, ExamplePairScores);
IMPEXAMPLE_END_NAMESPACE
#endif /* IMPEXAMPLE_EXAMPLE_PAIR_SCORE_H */
/**
* \file ExamplePairScore.cpp
* \brief A Score on the distance between a pair of particles.
*
* Copyright 2007-2021 IMP Inventors. All rights reserved.
*/
#include <IMP/core/XYZ.h>
#include <boost/lambda/lambda.hpp>
IMPEXAMPLE_BEGIN_NAMESPACE
ExamplePairScore::ExamplePairScore(double x0, double k) : x0_(x0), k_(k) {}
Float ExamplePairScore::evaluate_index(Model *m,
const ParticleIndexPair &pip,
DerivativeAccumulator *da) const {
// turn on logging for this method
// assume they have coordinates
core::XYZ d0(m, pip[0]);
core::XYZ d1(m, pip[1]);
// log something
double diff =
(d0.get_coordinates() - d1.get_coordinates()).get_magnitude() - x0_;
IMP_LOG_VERBOSE("The distance off from x0 is " << diff << std::endl);
double score = .5 * k_ * square(diff);
if (da) {
// derivatives are requested
algebra::Vector3D delta = d0.get_coordinates() - d1.get_coordinates();
algebra::Vector3D udelta = delta.get_unit_vector();
double dv = k_ * diff;
// add to the particle derivatives
d0.add_to_derivatives(udelta * dv, *da);
d1.add_to_derivatives(-udelta * dv, *da);
}
return score;
}
ModelObjectsTemp ExamplePairScore::do_get_inputs(
Model *m, const ParticleIndexes &pis) const {
return IMP::get_particles(m, pis);
}
IMPEXAMPLE_END_NAMESPACE

Definition at line 25 of file ExamplePairScore.h.

Public Member Functions

 ExamplePairScore (double x0, double k)
 
virtual ModelObjectsTemp do_get_inputs (Model *m, const ParticleIndexes &pis) const
 Overload this method to specify the inputs. More...
 
double evaluate_if_good_indexes (Model *m, const ParticleIndexPairs &p, DerivativeAccumulator *da, double max, unsigned int lower_bound, unsigned int upper_bound) const
 
virtual double evaluate_index (Model *m, const ParticleIndexPair &p, DerivativeAccumulator *da) const
 Compute the score and the derivative if needed. More...
 
double evaluate_indexes (Model *m, const ParticleIndexPairs &p, DerivativeAccumulator *da, unsigned int lower_bound, unsigned int upper_bound) const
 Compute the score and the derivative if needed over a set. More...
 
virtual std::string get_type_name () const
 
virtual ::IMP::VersionInfo get_version_info () const
 Get information about the module and version of the object. More...
 
- Public Member Functions inherited from IMP::PairScore
 PairScore (std::string name="PairScore %1%")
 
Restraints create_current_decomposition (Model *m, const ParticleIndexPair &vt) const
 
virtual double evaluate_if_good_index (Model *m, const ParticleIndexPair &vt, DerivativeAccumulator *da, double max) const
 Compute the score and the derivative if needed, only if "good". More...
 
- Public Member Functions inherited from IMP::ParticleInputs
ModelObjectsTemp get_inputs (Model *m, const ParticleIndexes &pis) const
 Get the ModelObjects read when the given list of particles is used. More...
 
- Public Member Functions inherited from IMP::Object
virtual void clear_caches ()
 
CheckLevel get_check_level () const
 
LogLevel get_log_level () const
 
void set_check_level (CheckLevel l)
 
void set_log_level (LogLevel l)
 Set the logging level used in this object. More...
 
void set_was_used (bool tf) const
 
void show (std::ostream &out=std::cout) const
 
const std::string & get_name () const
 
void set_name (std::string name)
 

Additional Inherited Members

- Public Types inherited from IMP::PairScore
typedef ParticlePair Argument
 
typedef ParticleIndexPair IndexArgument
 
typedef PairModifier Modifier
 
typedef const ParticlePairPassArgument
 
typedef const ParticleIndexPairPassIndexArgument
 
- Protected Member Functions inherited from IMP::PairScore
virtual Restraints do_create_current_decomposition (Model *m, const ParticleIndexPair &vt) const
 Override this to return your own decomposition. More...
 
- Protected Member Functions inherited from IMP::Object
 Object (std::string name)
 Construct an object with the given name. More...
 
virtual void do_destroy ()
 

Member Function Documentation

virtual ModelObjectsTemp IMP::example::ExamplePairScore::do_get_inputs ( Model m,
const ParticleIndexes pis 
) const
virtual

Overload this method to specify the inputs.

Implements IMP::ParticleInputs.

double IMP::example::ExamplePairScore::evaluate_if_good_indexes ( Model m,
const ParticleIndexPairs o,
DerivativeAccumulator da,
double  max,
unsigned int  lower_bound,
unsigned int  upper_bound 
) const
virtual

Compute the score and the derivative if needed over a set, only if "good". This functions similarly to evaluate_indexes(), but may terminate the computation early if the total score is higher than max.

Returns
the score if score<= max or some arbitrary value > max otherwise.
Note
Implementations for these are provided by the IMP_PAIR_SCORE() macro.

Reimplemented from IMP::PairScore.

Definition at line 35 of file ExamplePairScore.h.

virtual double IMP::example::ExamplePairScore::evaluate_index ( Model m,
const ParticleIndexPair vt,
DerivativeAccumulator da 
) const
virtual

Compute the score and the derivative if needed.

Parameters
mthe model of vt
vtthe index in m of an object of type ParticlePair
daa DerivativeAccumulator that weights computed derivatives. If nullptr, derivatives will not be computed.

Implements IMP::PairScore.

double IMP::example::ExamplePairScore::evaluate_indexes ( Model m,
const ParticleIndexPairs o,
DerivativeAccumulator da,
unsigned int  lower_bound,
unsigned int  upper_bound 
) const
virtual

Compute the score and the derivative if needed over a set.

Parameters
mthe model of o
oobjects of type ParticlePair, specified by index
daa derivative accumulator that weights computed derivatives. If nullptr, derivatives will not be computed.
lower_boundindex of first item in o to evaluate
upper_boundindex of last item in o to evaluate
Note
Implementations for these are provided by the IMP_PAIR_SCORE() macro.

Reimplemented from IMP::PairScore.

Definition at line 35 of file ExamplePairScore.h.

virtual ::IMP::VersionInfo IMP::example::ExamplePairScore::get_version_info ( ) const
virtual

Get information about the module and version of the object.

Reimplemented from IMP::Object.

Definition at line 36 of file ExamplePairScore.h.


The documentation for this class was generated from the following file: