initial commit

include/color.hpp

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <array>
+#include <cstdint>
+#include <vector>
+
+// Colour conversion utilities mirroring lib/dali/color.dart.
+class DaliColor {
+ public:
+  static std::array<int, 4> toIntList(double a, double r, double g, double b);
+  static int toInt(double a, double r, double g, double b);
+  static double decimalRound(int num, double idp);
+  static std::array<double, 3> gammaCorrection(double r, double g, double b, double gamma = 2.8);
+
+  static std::array<double, 3> rgb2xyz(double r, double g, double b);
+  static std::array<int, 3> xyz2rgb(double x, double y, double z);
+  static std::array<double, 2> xyz2xy(double x, double y, double z);
+  static std::array<double, 3> xy2xyz(double xVal, double yVal);
+  static std::array<double, 2> rgb2xy(double r, double g, double b);
+  static std::array<int, 3> xy2rgb(double xVal, double yVal);
+
+  static std::array<double, 3> xyz2lab(double x, double y, double z);
+  static std::array<double, 3> rgb2lab(double r, double g, double b);
+  static std::array<double, 3> lab2xyz(double l, double a, double b);
+  static std::array<int, 3> lab2rgb(double l, double a, double b);
+
+ private:
+  static double srgbToLinear(double value);
+  static double linearToSrgb(double value);
+};