IMP  2.0.1
The Integrative Modeling Platform
SlidingPriorRestraint.h
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1 /**
2  * \file IMP/isd/SlidingPriorRestraint.h
3  * \brief A restraint on a scale parameter.
4  *
5  * Copyright 2007-2013 IMP Inventors. All rights reserved.
6  *
7  */
8 
9 #ifndef IMPISD_SLIDING_PRIOR_RESTRAINT_H
10 #define IMPISD_SLIDING_PRIOR_RESTRAINT_H
11 
12 #include <IMP/isd/isd_config.h>
13 #include <IMP/SingletonScore.h>
14 #include <IMP/isd/ISDRestraint.h>
15 #include <IMP/restraint_macros.h>
16 
17 IMPISD_BEGIN_NAMESPACE
18 
19 //! Score a Scale particle with unnormalized probability.
20 /** \f[\frac{1}{\sigma_{q}} \exp\left(+\frac{(q-qmin)^2}{2 \sigma_q^2}\right)
21  \f]
22  where q is between qmin and qmax.
23  */
24 class IMPISDEXPORT SlidingPriorRestraint : public ISDRestraint
25 {
26  Pointer<Particle> p_;
27  double qmin_, qmax_, sq_;
28 
29 public:
30  //! Create the restraint.
31  SlidingPriorRestraint(Particle *p, double qmin, double qmax, double sq);
32 
33  /** This macro declares the basic needed methods: evaluate and show
34  */
36 
37  //! Call for probability
38  virtual double get_probability() const
39  {
40  return exp(-unprotected_evaluate(nullptr));
41  }
42 
43 };
44 
45 IMPISD_END_NAMESPACE
46 
47 #endif /* IMPISD_SLIDING_PRIOR_RESTRAINT_H */