/usr/include/glm/gtx/projection.hpp is in libglm-dev 0.9.7.2-1.
This file is owned by root:root, with mode 0o644.
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/// 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_projection
/// @file glm/gtx/projection.hpp
/// @date 2005-12-21 / 2011-06-07
/// @author Christophe Riccio
///
/// @see core (dependence)
///
/// @defgroup gtx_projection GLM_GTX_projection
/// @ingroup gtx
///
/// @brief Projection of a vector to other one
///
/// <glm/gtx/projection.hpp> need to be included to use these functionalities.
///////////////////////////////////////////////////////////////////////////////////
#pragma once
// Dependency:
#include "../geometric.hpp"
#if(defined(GLM_MESSAGES) && !defined(GLM_EXT_INCLUDED))
# pragma message("GLM: GLM_GTX_projection extension included")
#endif
namespace glm
{
/// @addtogroup gtx_projection
/// @{
/// Projects x on Normal.
///
/// @see gtx_projection
template <typename vecType>
GLM_FUNC_DECL vecType proj(vecType const & x, vecType const & Normal);
/// @}
}//namespace glm
#include "projection.inl"
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