add nightlight hyprland plugin + rename hyprsunsetmanager -> nightlightmanager to control both

2026-08-31 13:53:37 +02:00
parent 703d804746
commit d4e936a7e2
11 changed files with 1087 additions and 222 deletions
@@ -0,0 +1,37 @@
+#pragma once
+#include <array>
+#include <cmath>
+#include <algorithm>
+
+namespace ZShell::services {
+
+inline std::array<float, 3> kelvinToGain(int kelvin) {
+	const double t = std::clamp(kelvin, 1000, 40000) / 100.0;
+	double r, g, b;
+
+	r = t <= 66.0
+			? 1.0
+			: std::clamp(
+				  1.29293618606 * std::pow(t - 60.0, -0.1332047592), 0.0, 1.0);
+	g = t <= 66.0
+			? std::clamp(0.39008157876 * std::log(t) - 0.63184144378, 0.0, 1.0)
+			: std::clamp(
+				  1.12989086089 * std::pow(t - 60.0, -0.0755148492), 0.0, 1.0);
+	b = t >= 66.0
+			? 1.0
+			: (t <= 19.0
+				   ? 0.0
+				   : std::clamp(
+						 0.54320678911 * std::log(t - 10.0) - 1.19625408914,
+						 0.0,
+						 1.0));
+
+	return {static_cast<float>(r), static_cast<float>(g), static_cast<float>(b)};
+}
+
+inline float easeInOutCubic(float x) {
+	return x < 0.5f ? 4.f * x * x * x
+					: 1.f - std::pow(-2.f * x + 2.f, 3.f) / 2.f;
+}
+
+} // namespace ZShell::services