///////////////////////////////////////////////////////////////////////////////////
/// OpenGL Mathematics (glm.g-truc.net)
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/// @ref core
/// @file glm/detail/func_noise.hpp
/// @date 2008-08-01 / 2011-06-18
/// @author Christophe Riccio
///
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.13 Noise Functions</a>
///
/// @defgroup core_func_noise Noise functions
/// @ingroup core
///
/// Noise functions are stochastic functions that can be used to increase visual
/// complexity. Values returned by the following noise functions give the
/// appearance of randomness, but are not truly random.
///////////////////////////////////////////////////////////////////////////////////

#pragma once

#include "type_vec1.hpp"
#include "type_vec2.hpp"
#include "type_vec3.hpp"
#include "setup.hpp"

namespace glm
{
        /// @addtogroup core_func_noise
        /// @{

        /// Returns a 1D noise value based on the input value x.
        ///
        /// @tparam genType Floating-point scalar or vector types.
        ///
        /// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/noise1.xml">GLSL noise1 man page</a>
        /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.13 Noise Functions</a>
        template <typename genType>
        GLM_FUNC_DECL typename genType::value_type noise1(genType const & x);

        /// Returns a 2D noise value based on the input value x.
        ///
        /// @tparam genType Floating-point scalar or vector types.
        ///
        /// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/noise2.xml">GLSL noise2 man page</a>
        /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.13 Noise Functions</a>
        template <typename genType>
        GLM_FUNC_DECL tvec2<typename genType::value_type, defaultp> noise2(genType const & x);

        /// Returns a 3D noise value based on the input value x.
        ///
        /// @tparam genType Floating-point scalar or vector types.
        ///
        /// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/noise3.xml">GLSL noise3 man page</a>
        /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.13 Noise Functions</a>
        template <typename genType>
        GLM_FUNC_DECL tvec3<typename genType::value_type, defaultp> noise3(genType const & x);

        /// Returns a 4D noise value based on the input value x.
        ///
        /// @tparam genType Floating-point scalar or vector types.
        ///
        /// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/noise4.xml">GLSL noise4 man page</a>
        /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.13 Noise Functions</a>
        template <typename genType>
        GLM_FUNC_DECL tvec4<typename genType::value_type, defaultp> noise4(genType const & x);

        /// @}
}//namespace glm

#include "func_noise.inl"