00001 // $Id: math.hxx,v 1.3 2003/01/04 20:12:38 grumbel Exp $ 00002 // 00003 // Construo - A wire-frame construction gamee 00004 // Copyright (C) 2000 Ingo Ruhnke <grumbel@gmx.de> 00005 // 00006 // This program is free software; you can redistribute it and/or 00007 // modify it under the terms of the GNU General Public License 00008 // as published by the Free Software Foundation; either version 2 00009 // of the License, or (at your option) any later version. 00010 // 00011 // This program is distributed in the hope that it will be useful, 00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 // GNU General Public License for more details. 00015 // 00016 // You should have received a copy of the GNU General Public License 00017 // along with this program; if not, write to the Free Software 00018 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 00019 00020 #ifndef CONSTRUO_MATH_HXX 00021 #define CONSTRUO_MATH_HXX 00022 00028 namespace Math { 00029 00030 const double pi = 3.14159265358979323846; /* pi */ 00031 const double pi_2 = 1.57079632679489661923; /* pi/2 */ 00032 00033 template<class T> 00034 T min (const T& a, const T& b) 00035 { 00036 if (a < b) 00037 return a; 00038 else 00039 return b; 00040 } 00041 00042 template<class T> 00043 T max (const T& a, const T& b) 00044 { 00045 if (a > b) 00046 return a; 00047 else 00048 return b; 00049 } 00050 00051 template<class T> 00052 T mid (const T& a, const T& b, const T& c) 00053 { 00054 return max((a), min((b), (c))); 00055 } 00056 00057 inline int round(float a) 00058 { 00059 return int((a > 0) ? (a + .5f) : (a - .5)); 00060 } 00061 00062 } // namespace Math 00063 00064 #endif
1.3-rc3