FreeFOAM The Cross-Platform CFD Toolkit
sphereToCell.C
Go to the documentation of this file.
1 /*---------------------------------------------------------------------------*\
2  ========= |
3  \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
4  \\ / O peration |
5  \\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
6  \\/ M anipulation |
7 -------------------------------------------------------------------------------
8 License
9  This file is part of OpenFOAM.
10 
11  OpenFOAM is free software: you can redistribute it and/or modify it
12  under the terms of the GNU General Public License as published by
13  the Free Software Foundation, either version 3 of the License, or
14  (at your option) any later version.
15 
16  OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
17  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19  for more details.
20 
21  You should have received a copy of the GNU General Public License
22  along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
23 
24 \*---------------------------------------------------------------------------*/
25 
26 #include "sphereToCell.H"
27 #include <OpenFOAM/polyMesh.H>
29 
30 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
31 
32 namespace Foam
33 {
34  defineTypeNameAndDebug(sphereToCell, 0);
35  addToRunTimeSelectionTable(topoSetSource, sphereToCell, word);
36  addToRunTimeSelectionTable(topoSetSource, sphereToCell, istream);
37 }
38 
39 
40 Foam::topoSetSource::addToUsageTable Foam::sphereToCell::usage_
41 (
42  sphereToCell::typeName,
43  "\n Usage: sphereToCell (centreX centreY centreZ) radius\n\n"
44  " Select all cells with cellCentre within bounding sphere\n\n"
45 );
46 
47 
48 // * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
49 
50 void Foam::sphereToCell::combine(topoSet& set, const bool add) const
51 {
52  const pointField& ctrs = mesh_.cellCentres();
53 
54  const scalar radSquared = radius_*radius_;
55 
56  forAll(ctrs, cellI)
57  {
58  scalar offset = magSqr(centre_ - ctrs[cellI]);
59  if (offset <= radSquared)
60  {
61  addOrDelete(set, cellI, add);
62  }
63  }
64 }
65 
66 
67 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
68 
70 (
71  const polyMesh& mesh,
72  const vector& centre,
73  const scalar radius
74 )
75 :
76  topoSetSource(mesh),
77  centre_(centre),
78  radius_(radius)
79 {}
80 
81 
83 (
84  const polyMesh& mesh,
85  const dictionary& dict
86 )
87 :
88  topoSetSource(mesh),
89  centre_(dict.lookup("centre")),
90  radius_(readScalar(dict.lookup("radius")))
91 {}
92 
93 
94 // Construct from Istream
96 (
97  const polyMesh& mesh,
98  Istream& is
99 )
100 :
101  topoSetSource(mesh),
102  centre_(checkIs(is)),
103  radius_(readScalar(checkIs(is)))
104 {}
105 
106 
107 // * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
108 
110 {}
111 
112 
113 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
114 
116 (
117  const topoSetSource::setAction action,
118  topoSet& set
119 ) const
120 {
121  if ((action == topoSetSource::NEW) || (action == topoSetSource::ADD))
122  {
123  Info<< " Adding cells with centre within sphere, with centre = "
124  << centre_ << " and radius = " << radius_ << endl;
125 
126  combine(set, true);
127  }
128  else if (action == topoSetSource::DELETE)
129  {
130  Info<< " Removing cells with centre within sphere, with centre = "
131  << centre_ << " and radius = " << radius_ << endl;
132 
133  combine(set, false);
134  }
135 }
136 
137 
138 // ************************ vim: set sw=4 sts=4 et: ************************ //