IMP Reference Guide  2.7.0 The Integrative Modeling Platform
counting.h
Go to the documentation of this file.
1 /**
2  * \file IMP/example/counting.h
3  * \brief A simple unary function.
4  *
6  *
7  */
8
9 #ifndef IMPEXAMPLE_COUNTING_H
10 #define IMPEXAMPLE_COUNTING_H
11
12 #include <IMP/example/example_config.h>
14 #include <IMP/core/XYZ.h>
15
16 IMPEXAMPLE_BEGIN_NAMESPACE
17
18 /** Return the number of times particles from one set are close
19  to those from another set.
20  \note This method uses the distance between the centers of
21  the particles and does not use their radii.
22 */
23 inline unsigned int get_number_of_incidences(const ParticlesTemp &psa,
24  const ParticlesTemp &psb,
25  double point_distance) {
26  algebra::Vector3Ds vsa(psa.size());
27  for (unsigned int i = 0; i < vsa.size(); ++i) {
28  vsa[i] = core::XYZ(psa[i]).get_coordinates();
29  }
30  IMP_NEW(algebra::NearestNeighbor3D, nn, (vsa));
31  unsigned int ret = 0;
32  for (unsigned int i = 0; i < psb.size(); ++i) {
34  if (!nn->get_in_ball(v, point_distance).empty()) {
35  ++ret;
36  }
37  }
38  return ret;
39 }
40
41 IMPEXAMPLE_END_NAMESPACE
42
43 #endif /* IMPEXAMPLE_COUNTING_H */
unsigned int get_number_of_incidences(const ParticlesTemp &psa, const ParticlesTemp &psb, double point_distance)
Definition: counting.h:23
Simple XYZ decorator.
#define IMP_NEW(Typename, varname, args)
Declare a ref counted pointer to a new object.
Definition: object_macros.h:64
A decorator for a particle with x,y,z coordinates.
Definition: XYZ.h:30
const algebra::Vector3D & get_coordinates() const
Convert it to a vector.
Definition: XYZ.h:109
VectorD< 3 > Vector3D
Definition: VectorD.h:395
Functions to search over vectors.