src/OpenFOAM/meshes/boundBox/boundBox.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   4    \\    /   O peration     |
   5     \\  /    A nd           | Copyright (C) 1991-2009 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 the
  13     Free Software Foundation; either version 2 of the License, or (at your
  14     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, write to the Free Software Foundation,
  23     Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  24
  25 \*---------------------------------------------------------------------------*/
  26
  27 #include "boundBox.H"
  28 #include "PstreamReduceOps.H"
  29 #include "tmp.H"
  30
  31 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
  32
  33 const Foam::scalar Foam::boundBox::great(VGREAT);
  34
  35 const Foam::boundBox Foam::boundBox::greatBox
  36 (
  37     point(-VGREAT, -VGREAT, -VGREAT),
  38     point(VGREAT, VGREAT, VGREAT)
  39 );
  40
  41
  42 const Foam::boundBox Foam::boundBox::invertedBox
  43 (
  44     point(VGREAT, VGREAT, VGREAT),
  45     point(-VGREAT, -VGREAT, -VGREAT)
  46 );
  47
  48
  49 // * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
  50
  51 void Foam::boundBox::calculate(const pointField& points, const bool doReduce)
  52 {
  53     if (points.empty())
  54     {
  55         min_ = point::zero;
  56         max_ = point::zero;
  57
  58         if (doReduce && Pstream::parRun())
  59         {
  60             // Use values that get overwritten by reduce minOp, maxOp below
  61             min_ = point(VGREAT, VGREAT, VGREAT);
  62             max_ = point(-VGREAT, -VGREAT, -VGREAT);
  63         }
  64     }
  65     else
  66     {
  67         min_ = points[0];
  68         max_ = points[0];
  69
  70         for (label i = 1; i < points.size(); i++)
  71         {
  72             min_ = ::Foam::min(min_, points[i]);
  73             max_ = ::Foam::max(max_, points[i]);
  74         }
  75     }
  76
  77     // Reduce parallel information
  78     if (doReduce)
  79     {
  80         reduce(min_, minOp<point>());
  81         reduce(max_, maxOp<point>());
  82     }
  83 }
  84
  85
  86 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
  87
  88 Foam::boundBox::boundBox(const pointField& points, const bool doReduce)
  89 :
  90     min_(point::zero),
  91     max_(point::zero)
  92 {
  93     calculate(points, doReduce);
  94 }
  95
  96
  97 Foam::boundBox::boundBox(const tmp<pointField>& points, const bool doReduce)
  98 :
  99     min_(point::zero),
 100     max_(point::zero)
 101 {
 102     calculate(points(), doReduce);
 103     points.clear();
 104 }
 105
 106
 107 Foam::boundBox::boundBox(Istream& is)
 108 {
 109     operator>>(is, *this);
 110 }
 111
 112
 113 // * * * * * * * * * * * * * * * Ostream Operator  * * * * * * * * * * * * * //
 114
 115 Foam::Ostream& Foam::operator<<(Ostream& os, const boundBox& bb)
 116 {
 117     if (os.format() == IOstream::ASCII)
 118     {
 119         os << bb.min_ << token::SPACE << bb.max_;
 120     }
 121     else
 122     {
 123         os.write
 124         (
 125             reinterpret_cast<const char*>(&bb.min_),
 126             sizeof(boundBox)
 127         );
 128     }
 129
 130     // Check state of Ostream
 131     os.check("Ostream& operator<<(Ostream&, const boundBox&)");
 132     return os;
 133 }
 134
 135
 136 Foam::Istream& Foam::operator>>(Istream& is, boundBox& bb)
 137 {
 138     if (is.format() == IOstream::ASCII)
 139     {
 140         return is >> bb.min_ >> bb.max_;
 141     }
 142     else
 143     {
 144         is.read
 145         (
 146             reinterpret_cast<char*>(&bb.min_),
 147             sizeof(boundBox)
 148         );
 149     }
 150
 151     // Check state of Istream
 152     is.check("Istream& operator>>(Istream&, boundBox&)");
 153     return is;
 154 }
 155
 156 // ************************************************************************* //