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///////////////////////////////////////////////////////////////////////////////////////////////////
// OpenGL Mathematics Copyright (c) 2005 - 2011 G-Truc Creation (www.g-truc.net)
///////////////////////////////////////////////////////////////////////////////////////////////////
// Created : 2005-12-30
// Updated : 2006-11-13
// Licence : This source is under MIT License
// File : glm/gtx/vector_angle.hpp
///////////////////////////////////////////////////////////////////////////////////////////////////
// Dependency:
// - GLM core
// - GLM_GTX_quaternion
// - GLM_GTX_epsilon
///////////////////////////////////////////////////////////////////////////////////////////////////
#ifndef glm_gtx_vector_angle
#define glm_gtx_vector_angle
// Dependency:
#include "../glm.hpp"
#include "../gtx/epsilon.hpp"
#include "../gtx/quaternion.hpp"
#include "../gtx/rotate_vector.hpp"
#if(defined(GLM_MESSAGES) && !defined(glm_ext))
# pragma message("GLM: GLM_GTX_vector_angle extension included")
#endif
namespace glm{
namespace gtx{
namespace vector_angle ///< GLM_GTX_vector_angle extension: Compute angle between vectors
{
using namespace quaternion;
using namespace epsilon;
/// \addtogroup gtx_vector_angle
///@{
//! Returns the absolute angle between two vectors
//! Parameters need to be normalized.
//! From GLM_GTX_vector_angle extension
template <typename vecType>
GLM_FUNC_QUALIFIER typename vecType::value_type angle(
vecType const & x,
vecType const & y);
//! Returns the oriented angle between two 2d vectors
//! Parameters need to be normalized.
//! From GLM_GTX_vector_angle extension.
template <typename T>
GLM_FUNC_QUALIFIER T orientedAngle(
detail::tvec2<T> const & x,
detail::tvec2<T> const & y);
//! Returns the oriented angle between two 3d vectors based from a reference axis.
//! Parameters need to be normalized.
//! From GLM_GTX_vector_angle extension.
template <typename T>
GLM_FUNC_QUALIFIER T orientedAngle(
detail::tvec3<T> const & x,
detail::tvec3<T> const & y,
detail::tvec3<T> const & ref);
/// @}
}// namespace vector_angle
}// namespace gtx
}// namespace glm
#include "vector_angle.inl"
namespace glm{using namespace gtx::vector_angle;}
#endif//glm_gtx_vector_angle
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