diff --git a/glm/gtx/range.hpp b/glm/gtx/range.hpp new file mode 100644 index 00000000..26be2e32 --- /dev/null +++ b/glm/gtx/range.hpp @@ -0,0 +1,82 @@ +/////////////////////////////////////////////////////////////////////////////////// +/// OpenGL Mathematics (glm.g-truc.net) +/// +/// Copyright (c) 2005 - 2014 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. +/// +/// 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_range +/// @file glm/gtx/range.hpp +/// @date 2014-09-19 / 2014-09-19 +/// @author Joshua Moerman +/// +/// @brief Defines begin and end for vectors and matrices. Useful for range-based for loop. +/// The range is defined over the elements, not over columns or rows (e.g. mat4 has 16 elements). +/// +/////////////////////////////////////////////////////////////////////////////////// + +#pragma once + +#include "../gtc/type_ptr.hpp" + +namespace glm{ +namespace detail +{ + /* The glm types provide a .length() member, but for matrices + this only defines the number of columns, so we need to work around this */ + template + length_t number_of_elements_(tvec2 const & v){ + return v.length(); + } + + template + length_t number_of_elements_(tvec3 const & v){ + return v.length(); + } + + template + length_t number_of_elements_(tvec4 const & v){ + return v.length(); + } + + template + length_t number_of_elements_(genType const & v){ + return v.length() * v[0].length(); + } + + template + const typename genType::value_type * begin(const genType& v){ + return value_ptr(v); + } + + template + const typename genType::value_type * end(const genType& v){ + return begin(v) + number_of_elements_(v); + } + + template + typename genType::value_type * begin(genType& v){ + return value_ptr(v); + } + + template + typename genType::value_type * end(genType& v){ + return begin(v) + number_of_elements_(v); + } +} +} diff --git a/test/gtx/CMakeLists.txt b/test/gtx/CMakeLists.txt index 7ac579f2..ce4744ad 100644 --- a/test/gtx/CMakeLists.txt +++ b/test/gtx/CMakeLists.txt @@ -38,6 +38,7 @@ glmCreateTestGTC(gtx_polar_coordinates) glmCreateTestGTC(gtx_projection) glmCreateTestGTC(gtx_quaternion) glmCreateTestGTC(gtx_dual_quaternion) +glmCreateTestGTC(gtx_range) glmCreateTestGTC(gtx_rotate_normalized_axis) glmCreateTestGTC(gtx_rotate_vector) glmCreateTestGTC(gtx_scalar_multiplication) diff --git a/test/gtx/gtx_range.cpp b/test/gtx/gtx_range.cpp new file mode 100644 index 00000000..c8ee234c --- /dev/null +++ b/test/gtx/gtx_range.cpp @@ -0,0 +1,46 @@ +/////////////////////////////////////////////////////////////////////////////////////////////////// +// OpenGL Mathematics Copyright (c) 2005 - 2014 G-Truc Creation (www.g-truc.net) +/////////////////////////////////////////////////////////////////////////////////////////////////// +// Created : 2014-09-19 +// Updated : 2014-09-19 +// Licence : This source is under MIT licence +// File : test/gtx/gtx_range.cpp +/////////////////////////////////////////////////////////////////////////////////////////////////// + +#include +#include +#include + +int testVec(){ + int Error(0); + glm::vec3 v(1, 2, 3); + + int count = 0; + for(float x : v){ count++; } + Error += count == 3 ? 0 : 1; + + for(float& x : v){ x = 0; } + Error += glm::all(glm::equal(v, glm::vec3(0, 0, 0))) ? 0 : 1; + return Error; +} + +int testMat(){ + int Error(0); + glm::mat4x3 m(1); + + int count = 0; + for(float x : m){ count++; } + Error += count == 12 ? 0 : 1; + + for(float& x : m){ x = 0; } + glm::vec4 v(1, 1, 1, 1); + Error += glm::all(glm::equal(m*v, glm::vec3(0, 0, 0))) ? 0 : 1; + return Error; +} + +int main(){ + int Error(0); + Error += testVec(); + Error += testMat(); + return Error; +}