scalar_multiplication.hpp

Go to the documentation of this file.

 
 
#pragma once
 
#include "../detail/setup.hpp"
 
#if GLM_MESSAGES == GLM_ENABLE && !defined(GLM_EXT_INCLUDED)
#   ifndef GLM_ENABLE_EXPERIMENTAL
#       pragma message("GLM: GLM_GTX_scalar_multiplication is an experimental extension and may change in the future. Use #define GLM_ENABLE_EXPERIMENTAL before including it, if you really want to use it.")
#   else
#       pragma message("GLM: GLM_GTX_scalar_multiplication extension included")
#   endif
#endif
 
#include "../vec2.hpp"
#include "../vec3.hpp"
#include "../vec4.hpp"
#include "../mat2x2.hpp"
#include <type_traits>
 
namespace glm
{
    template<typename T, typename Vec>
    using return_type_scalar_multiplication = typename std::enable_if<
        !std::is_same<T, float>::value       // T may not be a float
        && std::is_arithmetic<T>::value, Vec // But it may be an int or double (no vec3 or mat3, ...)
    >::type;
 
#define GLM_IMPLEMENT_SCAL_MULT(Vec) \
    template<typename T> \
    return_type_scalar_multiplication<T, Vec> \
    operator*(T const& s, Vec rh){ \
        return rh *= static_cast<float>(s); \
    } \
     \
    template<typename T> \
    return_type_scalar_multiplication<T, Vec> \
    operator*(Vec lh, T const& s){ \
        return lh *= static_cast<float>(s); \
    } \
     \
    template<typename T> \
    return_type_scalar_multiplication<T, Vec> \
    operator/(Vec lh, T const& s){ \
        return lh *= 1.0f / static_cast<float>(s); \
    }
 
GLM_IMPLEMENT_SCAL_MULT(vec2)
GLM_IMPLEMENT_SCAL_MULT(vec3)
GLM_IMPLEMENT_SCAL_MULT(vec4)
 
GLM_IMPLEMENT_SCAL_MULT(mat2)
GLM_IMPLEMENT_SCAL_MULT(mat2x3)
GLM_IMPLEMENT_SCAL_MULT(mat2x4)
GLM_IMPLEMENT_SCAL_MULT(mat3x2)
GLM_IMPLEMENT_SCAL_MULT(mat3)
GLM_IMPLEMENT_SCAL_MULT(mat3x4)
GLM_IMPLEMENT_SCAL_MULT(mat4x2)
GLM_IMPLEMENT_SCAL_MULT(mat4x3)
GLM_IMPLEMENT_SCAL_MULT(mat4)
 
#undef GLM_IMPLEMENT_SCAL_MULT
} // namespace glm