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Optimizations from Norman Vine.

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curt 1999-02-01 21:08:28 +00:00
parent 3240464c7c
commit fab6d05157
1 changed files with 19 additions and 1 deletions
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20
Math/point3d.hxx
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@ -120,7 +120,8 @@ public:
friend ostream& operator<< ( ostream&, const Point3D& );
// Special functions
double distance3D(const Point3D& a) const; // distance between
double distance3D(const Point3D& a) const; // distance between
double distance3Dsquared(const Point3D& a) const; // distance between ^ 2
};
@ -316,10 +317,27 @@ Point3D::distance3D(const Point3D& a ) const
return sqrt(x*x + y*y + z*z);
}
inline double
Point3D::distance3Dsquared(const Point3D& a ) const
{
double x, y, z;
x = n[PX] - a.n[PX];
y = n[PY] - a.n[PY];
z = n[PZ] - a.n[PZ];
return(x*x + y*y + z*z);
}
#endif // _POINT3D_HXX
// $Log$
// Revision 1.9 1999/02/01 21:08:28 curt
// Optimizations from Norman Vine.
//
// Revision 1.8 1999/01/27 04:46:18 curt
// Portability tweaks by Bernie Bright.
//