/usr/include/gmsh/SBoundingBox3d.h is in libgmsh-dev 2.10.1+dfsg1-1ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 | // Gmsh - Copyright (C) 1997-2015 C. Geuzaine, J.-F. Remacle
//
// See the LICENSE.txt file for license information. Please report all
// bugs and problems to the public mailing list <gmsh@geuz.org>.
#ifndef _SBOUNDING_BOX_3D_H_
#define _SBOUNDING_BOX_3D_H_
#include <float.h>
#include "SPoint3.h"
#include "SVector3.h"
#if defined(WIN32)
#undef min
#undef max
#endif
// A bounding box class - add points and it grows to be the bounding
// box of the point set
class SBoundingBox3d {
public:
SBoundingBox3d()
: MinPt(DBL_MAX,DBL_MAX,DBL_MAX), MaxPt(-DBL_MAX,-DBL_MAX,-DBL_MAX) {}
SBoundingBox3d(const SPoint3 &pt)
: MinPt(pt), MaxPt(pt) {}
SBoundingBox3d(double xmin, double ymin, double zmin,
double xmax, double ymax, double zmax)
: MinPt(xmin, ymin, zmin), MaxPt(xmax, ymax, zmax) {}
bool empty()
{
if(MinPt.x() == DBL_MAX || MinPt.y() == DBL_MAX || MinPt.z() == DBL_MAX ||
MaxPt.x() == -DBL_MAX || MaxPt.y() == -DBL_MAX || MaxPt.z() == -DBL_MAX)
return true;
return false;
}
void reset()
{
MinPt = SPoint3(DBL_MAX,DBL_MAX,DBL_MAX);
MaxPt = SPoint3(-DBL_MAX,-DBL_MAX,-DBL_MAX);
}
void operator+=(const SPoint3 &pt)
{
// note: it is possible for pt[i] to be both > MaxPt[i] and < MinPt[i]
// the first point always will be both
if(pt[0] < MinPt[0])
MinPt[0] = pt[0];
if (pt[0] > MaxPt[0])
MaxPt[0] = pt[0];
if(pt[1] < MinPt[1])
MinPt[1] = pt[1];
if (pt[1] > MaxPt[1])
MaxPt[1] = pt[1];
if(pt[2] < MinPt[2])
MinPt[2] = pt[2];
if (pt[2] > MaxPt[2])
MaxPt[2] = pt[2];
}
void operator+=(const SBoundingBox3d &box)
{
(*this) += box.MinPt;
(*this) += box.MaxPt;
}
void operator*=(double scale)
{
SPoint3 center = (MinPt + MaxPt) * .5;
MaxPt -= center;
MinPt -= center;
MaxPt *= scale;
MinPt *= scale;
MaxPt += center;
MinPt += center;
}
void scale(double sx, double sy, double sz)
{
SPoint3 center = (MinPt + MaxPt) * .5;
MaxPt -= center;
MinPt -= center;
MaxPt[0] *= sx; MaxPt[1] *= sy; MaxPt[2] *= sz;
MinPt[0] *= sx; MinPt[1] *= sy; MinPt[2] *= sz;
MaxPt += center;
MinPt += center;
}
SPoint3 min() const { return MinPt; }
SPoint3 max() const { return MaxPt; }
SPoint3 center() const { return (MinPt + MaxPt) * .5; }
double diag() const { return MinPt.distance(MaxPt); }
void makeCube()
{
SVector3 len = MaxPt - MinPt;
SPoint3 cc = center();
MaxPt = cc + SPoint3(1,1,1);
MinPt = cc + SPoint3(-1,-1,-1);
double sc = len.norm() * 0.5;
scale (sc,sc,sc);
}
private:
SPoint3 MinPt, MaxPt;
};
#endif
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