vector3_i.h Source File

00001 //
00002 // vector3_i.h
00003 //
00004 // Copyright (C) 1996 Limit Point Systems, Inc.
00005 //
00006 // Author: Curtis Janssen <cljanss@limitpt.com>
00007 // Maintainer: LPS
00008 //
00009 // This file is part of the SC Toolkit.
00010 //
00011 // The SC Toolkit is free software; you can redistribute it and/or modify
00012 // it under the terms of the GNU Library General Public License as published by
00013 // the Free Software Foundation; either version 2, or (at your option)
00014 // any later version.
00015 //
00016 // The SC Toolkit is distributed in the hope that it will be useful,
00017 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00018 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00019 // GNU Library General Public License for more details.
00020 //
00021 // You should have received a copy of the GNU Library General Public License
00022 // along with the SC Toolkit; see the file COPYING.LIB.  If not, write to
00023 // the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
00024 //
00025 // The U.S. Government is granted a limited license as per AL 91-7.
00026 //
00027 
00028 #ifdef __GNUC__
00029 #pragma interface
00030 #endif
00031 
00032 #ifdef INLINE_FUNCTIONS
00033 #define INLINE inline
00034 #else
00035 #define INLINE
00036 #endif
00037 
00038 namespace sc {
00039 
00040 INLINE void
00041 SCVector3::spherical_coord(double theta, double phi,
00042                            double r)
00043 {
00044   double rsin_theta = r*sin(theta);
00045   _v[0]=rsin_theta*cos(phi);
00046   _v[1]=rsin_theta*sin(phi);
00047   _v[2]=r*cos(theta);
00048 }
00049 
00050 INLINE  double
00051 SCVector3::dist(const SCVector3 &s) const
00052 {
00053   double x=_v[0]-s._v[0],y=_v[1]-s._v[1],z=_v[2]-s._v[2];
00054   return sqrt(x*x + y*y + z*z);
00055 }
00056 
00057 }
00058 
00059 #undef INLINE
00060 
00061 // Local Variables:
00062 // mode: c++
00063 // c-file-style: "CLJ"
00064 // End: