nearestToPoint.C
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25 
26 #include "nearestToPoint.H"
27 #include "polyMesh.H"
29 
30 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
31 
32 namespace Foam
33 {
34  defineTypeNameAndDebug(nearestToPoint, 0);
35  addToRunTimeSelectionTable(topoSetSource, nearestToPoint, word);
36 }
37 
38 
39 // * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
40 
41 void Foam::nearestToPoint::combine(topoSet& set, const bool add) const
42 {
43  // Do linear search since usually just a few points.
44 
45  forAll(points_, pointi)
46  {
47  const pointField& pts = mesh_.points();
48 
49  if (pts.size())
50  {
51  label minPointi = 0;
52  scalar minDistSqr = magSqr(pts[minPointi] - points_[pointi]);
53 
54  for (label i = 1; i < pts.size(); i++)
55  {
56  scalar distSqr = magSqr(pts[i] - points_[pointi]);
57 
58  if (distSqr < minDistSqr)
59  {
60  minDistSqr = distSqr;
61  minPointi = i;
62  }
63  }
64 
65  addOrDelete(set, minPointi, add);
66  }
67  }
68 }
69 
70 
71 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
72 
74 (
75  const polyMesh& mesh,
76  const pointField& points
77 )
78 :
79  topoSetSource(mesh),
80  points_(points)
81 {}
82 
83 
85 (
86  const polyMesh& mesh,
87  const dictionary& dict
88 )
89 :
90  topoSetSource(mesh),
91  points_(dict.lookup("points"))
92 {}
93 
94 
95 // * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
96 
98 {}
99 
100 
101 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
102 
104 (
105  const topoSetSource::setAction action,
106  topoSet& set
107 ) const
108 {
109  if ((action == topoSetSource::NEW) || (action == topoSetSource::ADD))
110  {
111  Info<< " Adding points nearest to " << points_ << endl;
112 
113  combine(set, true);
114  }
115  else if (action == topoSetSource::DELETE)
116  {
117  Info<< " Removing points nearest to " << points_ << endl;
118 
119  combine(set, false);
120  }
121 }
122 
123 
124 // ************************************************************************* //
#define forAll(list, i)
Loop across all elements in list.
Definition: UList.H:434
FvWallInfoData< WallInfo, label > label
A label is an int32_t or int64_t as specified by the pre-processor macro WM_LABEL_SIZE.
A list of keyword definitions, which are a keyword followed by any number of values (e...
Definition: dictionary.H:156
virtual void applyToSet(const topoSetSource::setAction action, topoSet &) const
nearestToPoint(const polyMesh &mesh, const pointField &points)
Construct from components.
Ostream & endl(Ostream &os)
Add newline and flush stream.
Definition: Ostream.H:251
Macros for easy insertion into run-time selection tables.
Base class of a source for a topoSet.
Definition: topoSetSource.H:63
vectorField pointField
pointField is a vectorField.
Definition: pointFieldFwd.H:42
setAction
Enumeration defining the valid actions.
Definition: topoSetSource.H:82
dimensioned< scalar > magSqr(const dimensioned< Type > &)
addToRunTimeSelectionTable(ensightPart, ensightPartCells, istream)
defineTypeNameAndDebug(combustionModel, 0)
General set of labels of mesh quantity (points, cells, faces).
Definition: topoSet.H:61
virtual ~nearestToPoint()
Destructor.
messageStream Info
Mesh consisting of general polyhedral cells.
Definition: polyMesh.H:76
Namespace for OpenFOAM.
treeBoundBox combine(const treeBoundBox &a, const treeBoundBox &b)
Definition: patchToPatch.C:77
ITstream & lookup(const word &, bool recursive=false, bool patternMatch=true) const
Find and return an entry data stream.
Definition: dictionary.C:864