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author | LaG1924 <12997935+LaG1924@users.noreply.github.com> | 2018-01-13 03:51:33 +0100 |
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committer | LaG1924 <12997935+LaG1924@users.noreply.github.com> | 2018-01-13 03:51:34 +0100 |
commit | 6f67371bb1b46579ae837d0e0c61ac1b291be743 (patch) | |
tree | 5a43692a064d84e5c5688b1b3639342555139c3c /external/include/glm/gtx/color_space_YCoCg.inl | |
parent | Backported to C++14 (diff) | |
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Diffstat (limited to 'external/include/glm/gtx/color_space_YCoCg.inl')
-rw-r--r-- | external/include/glm/gtx/color_space_YCoCg.inl | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/external/include/glm/gtx/color_space_YCoCg.inl b/external/include/glm/gtx/color_space_YCoCg.inl new file mode 100644 index 0000000..1ca2e5b --- /dev/null +++ b/external/include/glm/gtx/color_space_YCoCg.inl @@ -0,0 +1,108 @@ +/// @ref gtx_color_space_YCoCg +/// @file glm/gtx/color_space_YCoCg.inl + +namespace glm +{ + template <typename T, precision P> + GLM_FUNC_QUALIFIER tvec3<T, P> rgb2YCoCg + ( + tvec3<T, P> const & rgbColor + ) + { + tvec3<T, P> result; + result.x/*Y */ = rgbColor.r / T(4) + rgbColor.g / T(2) + rgbColor.b / T(4); + result.y/*Co*/ = rgbColor.r / T(2) + rgbColor.g * T(0) - rgbColor.b / T(2); + result.z/*Cg*/ = - rgbColor.r / T(4) + rgbColor.g / T(2) - rgbColor.b / T(4); + return result; + } + + template <typename T, precision P> + GLM_FUNC_QUALIFIER tvec3<T, P> YCoCg2rgb + ( + tvec3<T, P> const & YCoCgColor + ) + { + tvec3<T, P> result; + result.r = YCoCgColor.x + YCoCgColor.y - YCoCgColor.z; + result.g = YCoCgColor.x + YCoCgColor.z; + result.b = YCoCgColor.x - YCoCgColor.y - YCoCgColor.z; + return result; + } + + template <typename T, precision P, bool isInteger> + class compute_YCoCgR { + public: + static GLM_FUNC_QUALIFIER tvec3<T, P> rgb2YCoCgR + ( + tvec3<T, P> const & rgbColor + ) + { + tvec3<T, P> result; + result.x/*Y */ = rgbColor.g / T(2) + (rgbColor.r + rgbColor.b) / T(4); + result.y/*Co*/ = rgbColor.r - rgbColor.b; + result.z/*Cg*/ = rgbColor.g - (rgbColor.r + rgbColor.b) / T(2); + return result; + } + + static GLM_FUNC_QUALIFIER tvec3<T, P> YCoCgR2rgb + ( + tvec3<T, P> const & YCoCgRColor + ) + { + tvec3<T, P> result; + T tmp = YCoCgRColor.x - (YCoCgRColor.z / T(2)); + result.g = YCoCgRColor.z + tmp; + result.b = tmp - (YCoCgRColor.y / T(2)); + result.r = result.b + YCoCgRColor.y; + return result; + } + }; + + template <typename T, precision P> + class compute_YCoCgR<T, P, true> { + public: + static GLM_FUNC_QUALIFIER tvec3<T, P> rgb2YCoCgR + ( + tvec3<T, P> const & rgbColor + ) + { + tvec3<T, P> result; + result.y/*Co*/ = rgbColor.r - rgbColor.b; + T tmp = rgbColor.b + (result.y >> 1); + result.z/*Cg*/ = rgbColor.g - tmp; + result.x/*Y */ = tmp + (result.z >> 1); + return result; + } + + static GLM_FUNC_QUALIFIER tvec3<T, P> YCoCgR2rgb + ( + tvec3<T, P> const & YCoCgRColor + ) + { + tvec3<T, P> result; + T tmp = YCoCgRColor.x - (YCoCgRColor.z >> 1); + result.g = YCoCgRColor.z + tmp; + result.b = tmp - (YCoCgRColor.y >> 1); + result.r = result.b + YCoCgRColor.y; + return result; + } + }; + + template <typename T, precision P> + GLM_FUNC_QUALIFIER tvec3<T, P> rgb2YCoCgR + ( + tvec3<T, P> const & rgbColor + ) + { + return compute_YCoCgR<T, P, std::numeric_limits<T>::is_integer>::rgb2YCoCgR(rgbColor); + } + + template <typename T, precision P> + GLM_FUNC_QUALIFIER tvec3<T, P> YCoCgR2rgb + ( + tvec3<T, P> const & YCoCgRColor + ) + { + return compute_YCoCgR<T, P, std::numeric_limits<T>::is_integer>::YCoCgR2rgb(YCoCgRColor); + } +}//namespace glm |