///////////////////////////////////////////////////////////////////////////////////
/// OpenGL Mathematics (glm.g-truc.net)
///
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/// all copies or substantial portions of the Software.
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/// @ref gtx_matrix_interpolation
/// @file glm/gtx/matrix_interpolation.hpp
/// @date 2011-03-05 / 2011-06-07
/// @author Ghenadii Ursachi (the.asteroth@gmail.com)
///
/// @see core (dependence)
///
/// @defgroup gtx_matrix_interpolation GLM_GTX_matrix_interpolation
/// @ingroup gtx
///
/// @brief Allows to directly interpolate two exiciting matrices.
///
/// <glm/gtx/matrix_interpolation.hpp> need to be included to use these functionalities.
///////////////////////////////////////////////////////////////////////////////////

#pragma once

// Dependency:
#include "../glm.hpp"

#if(defined(GLM_MESSAGES) && !defined(GLM_EXT_INCLUDED))
#       pragma message("GLM: GLM_GTX_matrix_interpolation extension included")
#endif

namespace glm
{
        /// @addtogroup gtx_matrix_interpolation
        /// @{

        /// Get the axis and angle of the rotation from a matrix.
        /// From GLM_GTX_matrix_interpolation extension.
        template <typename T, precision P>
        GLM_FUNC_DECL void axisAngle(
                tmat4x4<T, P> const & mat,
                tvec3<T, P> & axis,
                T & angle);

        /// Build a matrix from axis and angle.
        /// From GLM_GTX_matrix_interpolation extension.
        template <typename T, precision P>
        GLM_FUNC_DECL tmat4x4<T, P> axisAngleMatrix(
                tvec3<T, P> const & axis,
                T const angle);

        /// Extracts the rotation part of a matrix.
        /// From GLM_GTX_matrix_interpolation extension.
        template <typename T, precision P>
        GLM_FUNC_DECL tmat4x4<T, P> extractMatrixRotation(
                tmat4x4<T, P> const & mat);

        /// Build a interpolation of 4 * 4 matrixes.
        /// From GLM_GTX_matrix_interpolation extension.
        /// Warning! works only with rotation and/or translation matrixes, scale will generate unexpected results.
        template <typename T, precision P>
        GLM_FUNC_DECL tmat4x4<T, P> interpolate(
                tmat4x4<T, P> const & m1,
                tmat4x4<T, P> const & m2,
                T const delta);

        /// @}
}//namespace glm

#include "matrix_interpolation.inl"