Vec3.cc

00001 /*
00002 File: Vec3.cc
00003 
00004 Function: Implements Vec3.h
00005 
00006 Author(s): Andrew Willmott
00007 
00008 Copyright: (c) 1995-2000, Andrew Willmott
00009 
00010 Notes: 
00011 
00012 */
00013 
00014 
00015 #include "vl/Vec3.h"
00016 #include <ctype.h>
00017 #include <iomanip.h>
00018 
00019 
00020  ostream &operator << (ostream &s, const TVec3 &v)
00021 {
00022 Int w = s.width();
00023 
00024 return(s << '[' << v[0] << ' ' << setw(w) << v[1] << ' ' << setw(w) << v[2] << ']');
00025 }
00026 
00027  istream &operator >> (istream &s, TVec3 &v)
00028 {
00029 TVec3 result;
00030 Char c;
00031 
00032 // Expected format: [1 2 3]
00033 
00034 while (s >> c && isspace(c)) 
00035 ;
00036 
00037 if (c == '[') 
00038 {
00039 s >> result[0] >> result[1] >> result[2]; 
00040 
00041 if (!s)
00042 {
00043 cerr << "Error: Expected number while reading vector\n";
00044 return(s);
00045 }
00046 
00047 while (s >> c && isspace(c))
00048 ;
00049 
00050 if (c != ']')
00051 {
00052 s.clear(ios::failbit);
00053 cerr << "Error: Expected ']' while reading vector\n";
00054 return(s);
00055 }
00056 }
00057 else
00058 {
00059 s.clear(ios::failbit);
00060 cerr << "Error: Expected '[' while reading vector\n";
00061 return(s);
00062 }
00063 
00064 v = result;
00065 return(s);
00066 }
00067