/////////////////////////////////////////////////////////////////////////////////// /// OpenGL Mathematics (glm.g-truc.net) /// /// Copyright (c) 2005 - 2015 G-Truc Creation (www.g-truc.net) /// Permission is hereby granted, free of charge, to any person obtaining a copy /// of this software and associated documentation files (the "Software"), to deal /// in the Software without restriction, including without limitation the rights /// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell /// copies of the Software, and to permit persons to whom the Software is /// furnished to do so, subject to the following conditions: /// /// The above copyright notice and this permission notice shall be included in /// all copies or substantial portions of the Software. /// /// Restrictions: /// By making use of the Software for military purposes, you choose to make /// a Bunny unhappy. /// /// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR /// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, /// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE /// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER /// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, /// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN /// THE SOFTWARE. /// /// @ref gtx_polar_coordinates /// @file glm/gtx/polar_coordinates.inl /// @date 2007-03-06 / 2011-06-07 /// @author Christophe Riccio /////////////////////////////////////////////////////////////////////////////////// namespace glm { template GLM_FUNC_QUALIFIER tvec3 polar ( tvec3 const & euclidean ) GLM_NOEXCEPT { T const Length(length(euclidean)); tvec3 const tmp(euclidean / Length); T const xz_dist(sqrt(tmp.x * tmp.x + tmp.z * tmp.z)); return tvec3( atan(xz_dist, tmp.y), // latitude atan(tmp.x, tmp.z), // longitude xz_dist); // xz distance } template GLM_FUNC_QUALIFIER tvec3 euclidean ( tvec2 const & polar ) GLM_NOEXCEPT { T const latitude(polar.x); T const longitude(polar.y); return tvec3( cos(latitude) * sin(longitude), sin(latitude), cos(latitude) * cos(longitude)); } }//namespace glm