00001 #ifndef GSGL_MATH_MATH_H 00002 #define GSGL_MATH_MATH_H 00003 00004 // 00005 // $Id: math.hpp 2 2008-03-01 20:58:50Z kulibali $ 00006 // 00007 // Copyright (c) 2008, The Periapsis Project. All rights reserved. 00008 // 00009 // Redistribution and use in source and binary forms, with or without 00010 // modification, are permitted provided that the following conditions are 00011 // met: 00012 // 00013 // * Redistributions of source code must retain the above copyright notice, 00014 // this list of conditions and the following disclaimer. 00015 // 00016 // * Redistributions in binary form must reproduce the above copyright 00017 // notice, this list of conditions and the following disclaimer in the 00018 // documentation and/or other materials provided with the distribution. 00019 // 00020 // * Neither the name of the The Periapsis Project nor the names of its 00021 // contributors may be used to endorse or promote products derived from 00022 // this software without specific prior written permission. 00023 // 00024 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 00025 // IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 00026 // TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 00027 // PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 00028 // OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00029 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 00030 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00031 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00032 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00033 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00034 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00035 // 00036 00037 #ifdef WIN32 00038 00039 #pragma warning (disable:4251) 00040 #pragma warning (disable:4996) 00041 00042 #ifdef GSGL_MATH_EXPORTS 00043 #define MATH_API __declspec(dllexport) 00044 #else 00045 #define MATH_API __declspec(dllimport) 00046 #endif 00047 #else 00048 #define MATH_API 00049 #endif 00050 00051 00052 namespace gsgl 00053 { 00054 00055 typedef float real_t; 00056 00057 namespace math 00058 { 00059 00060 extern MATH_API const double PI; 00061 extern MATH_API const double PI_OVER_2; 00062 extern MATH_API const double PI_TIMES_2; 00063 00064 extern MATH_API const double DEG2RAD; 00065 extern MATH_API const double RAD2DEG; 00066 00067 00068 class MATH_API math_object 00069 { 00070 public: 00071 }; // class math_object 00072 00073 00074 // utility functions 00075 00076 template <typename R> 00077 R clamp(const R & val, const R & min, const R & max) 00078 { 00079 if (val < min) 00080 return min; 00081 if (val > max) 00082 return max; 00083 return val; 00084 } // clamp() 00085 00086 00087 } // namespace math 00088 00089 } // namespace gsgl 00090 00091 #endif
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