00001 // ***************************************************************************** 00002 // 00003 // Copyright (c) 2014, Southwest Research Institute® (SwRI®) 00004 // All rights reserved. 00005 // 00006 // Redistribution and use in source and binary forms, with or without 00007 // modification, are permitted provided that the following conditions are met: 00008 // * Redistributions of source code must retain the above copyright 00009 // notice, this list of conditions and the following disclaimer. 00010 // * Redistributions in binary form must reproduce the above copyright 00011 // notice, this list of conditions and the following disclaimer in the 00012 // documentation and/or other materials provided with the distribution. 00013 // * Neither the name of Southwest Research Institute® (SwRI®) nor the 00014 // names of its contributors may be used to endorse or promote products 00015 // derived from this software without specific prior written permission. 00016 // 00017 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00018 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00019 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00020 // ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY 00021 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 00022 // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00023 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 00024 // ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00025 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00026 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00027 // 00028 // ***************************************************************************** 00029 00030 #ifndef MATH_UTIL_CONSTANTS_H_ 00031 #define MATH_UTIL_CONSTANTS_H_ 00032 00033 namespace swri_math_util 00034 { 00035 static const long double _pi = 3.1415926535897932384626433832795029L; 00036 00037 static const long double _2pi = 6.28318530717958647692528676655900576L; 00038 00039 static const long double _half_pi = 1.57079632679489661923132169163975144L; 00040 00041 static const long double _deg_2_rad = 0.01745329251994329576923690768488612L; 00042 00043 static const long double _rad_2_deg = 57.2957795130823208767981548141051703L; 00044 00045 static const double _kph_to_mps = 0.2777777777777778; 00046 00047 static const double _mps_to_mph = 2.2369362920544025; 00048 00049 static const double _feet_to_meters = 0.3048; 00050 00051 static const double _yards_to_meters = 0.9144; 00052 } 00053 00054 #endif // MATH_UTIL_CONSTANTS_H_