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author | Joursoir <chat@joursoir.net> | 2021-04-10 17:29:02 +0000 |
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committer | Joursoir <chat@joursoir.net> | 2021-04-10 17:29:02 +0000 |
commit | a8b3118e8305fd1c668ea25e07157b625c9747ff (patch) | |
tree | 69aeec3c40e123443675da381774ef656a2c86e0 /src/include/glm/gtx/color_space_YCoCg.inl | |
parent | 887314d01046ed2c00db3eb7b4b227f070501aa1 (diff) | |
download | space-simulator-a8b3118e8305fd1c668ea25e07157b625c9747ff.tar.gz space-simulator-a8b3118e8305fd1c668ea25e07157b625c9747ff.tar.bz2 space-simulator-a8b3118e8305fd1c668ea25e07157b625c9747ff.zip |
add glm headers
Diffstat (limited to 'src/include/glm/gtx/color_space_YCoCg.inl')
-rw-r--r-- | src/include/glm/gtx/color_space_YCoCg.inl | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/src/include/glm/gtx/color_space_YCoCg.inl b/src/include/glm/gtx/color_space_YCoCg.inl new file mode 100644 index 0000000..7c410c1 --- /dev/null +++ b/src/include/glm/gtx/color_space_YCoCg.inl @@ -0,0 +1,107 @@ +/// @ref gtx_color_space_YCoCg
+
+namespace glm
+{
+ template<typename T, qualifier Q>
+ GLM_FUNC_QUALIFIER vec<3, T, Q> rgb2YCoCg
+ (
+ vec<3, T, Q> const& rgbColor
+ )
+ {
+ vec<3, T, Q> 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, qualifier Q>
+ GLM_FUNC_QUALIFIER vec<3, T, Q> YCoCg2rgb
+ (
+ vec<3, T, Q> const& YCoCgColor
+ )
+ {
+ vec<3, T, Q> 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, qualifier Q, bool isInteger>
+ class compute_YCoCgR {
+ public:
+ static GLM_FUNC_QUALIFIER vec<3, T, Q> rgb2YCoCgR
+ (
+ vec<3, T, Q> const& rgbColor
+ )
+ {
+ vec<3, T, Q> result;
+ result.x/*Y */ = rgbColor.g * static_cast<T>(0.5) + (rgbColor.r + rgbColor.b) * static_cast<T>(0.25);
+ result.y/*Co*/ = rgbColor.r - rgbColor.b;
+ result.z/*Cg*/ = rgbColor.g - (rgbColor.r + rgbColor.b) * static_cast<T>(0.5);
+ return result;
+ }
+
+ static GLM_FUNC_QUALIFIER vec<3, T, Q> YCoCgR2rgb
+ (
+ vec<3, T, Q> const& YCoCgRColor
+ )
+ {
+ vec<3, T, Q> result;
+ T tmp = YCoCgRColor.x - (YCoCgRColor.z * static_cast<T>(0.5));
+ result.g = YCoCgRColor.z + tmp;
+ result.b = tmp - (YCoCgRColor.y * static_cast<T>(0.5));
+ result.r = result.b + YCoCgRColor.y;
+ return result;
+ }
+ };
+
+ template<typename T, qualifier Q>
+ class compute_YCoCgR<T, Q, true> {
+ public:
+ static GLM_FUNC_QUALIFIER vec<3, T, Q> rgb2YCoCgR
+ (
+ vec<3, T, Q> const& rgbColor
+ )
+ {
+ vec<3, T, Q> 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 vec<3, T, Q> YCoCgR2rgb
+ (
+ vec<3, T, Q> const& YCoCgRColor
+ )
+ {
+ vec<3, T, Q> 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, qualifier Q>
+ GLM_FUNC_QUALIFIER vec<3, T, Q> rgb2YCoCgR
+ (
+ vec<3, T, Q> const& rgbColor
+ )
+ {
+ return compute_YCoCgR<T, Q, std::numeric_limits<T>::is_integer>::rgb2YCoCgR(rgbColor);
+ }
+
+ template<typename T, qualifier Q>
+ GLM_FUNC_QUALIFIER vec<3, T, Q> YCoCgR2rgb
+ (
+ vec<3, T, Q> const& YCoCgRColor
+ )
+ {
+ return compute_YCoCgR<T, Q, std::numeric_limits<T>::is_integer>::YCoCgR2rgb(YCoCgRColor);
+ }
+}//namespace glm
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