chore: more abstraction and other refactors

src/mode/ModeTilt.cpp

@@ -0,0 +1,56 @@
+#include "ModeTilt.hpp"
+#include "../globals.hpp"
+#include <hyprland/src/Compositor.hpp>
+
+double function(double speed) {
+    static auto const* PFUNCTION = (Hyprlang::STRING const*)HyprlandAPI::getConfigValue(PHANDLE, CONFIG_FUNCTION)->getDataStaticPtr();
+    static auto* const* PMASS = (Hyprlang::INT* const*)HyprlandAPI::getConfigValue(PHANDLE, CONFIG_MASS)->getDataStaticPtr();
+    double mass = **PMASS;
+
+    double result = 0;
+    if (!strcmp(*PFUNCTION, "linear")) {
+
+        result = speed / **PMASS;
+
+    } else if (!strcmp(*PFUNCTION, "quadratic")) {
+
+
+        // (1 / m²) * x², is a quadratic function which will reach 1 at m
+        result = (1.0 / (mass * mass)) * (speed * speed);
+        result *= (speed > 0 ? 1 : -1);
+
+    } else if (!strcmp(*PFUNCTION, "negative_quadratic")) {
+
+        float x = std::abs(speed);
+        // (-1 / m²) * (x - m)² + 1, is a quadratic function with the inverse curvature which will reach 1 at m
+        result = (-1.0 / (mass * mass)) * ((x - mass) * (x - mass)) + 1;
+        if (x > mass) result = 1; // need to clamp manually, as the function would decrease again
+
+        result *= (speed > 0 ? 1 : -1);
+    } else
+        Debug::log(WARN, "[dynamic-cursors] unknown air function specified");
+
+    return std::clamp(result, -1.0, 1.0);
+}
+
+EModeUpdate CModeTilt::strategy() {
+    return TICK;
+}
+
+double CModeTilt::update(Vector2D pos) {
+
+    // create samples array
+    int max = g_pHyprRenderer->m_pMostHzMonitor->refreshRate / 10; // 100ms worth of history
+    samples.resize(max);
+
+    // capture current sample
+    samples[samples_index] = Vector2D{pos};
+    int current = samples_index;
+    samples_index = (samples_index + 1) % max; // increase for next sample
+    int first = samples_index;
+
+    // calculate speed and tilt
+    double speed = (samples[current].x - samples[first].x) / 0.1;
+
+    return function(speed) * (PI / 3); // 120° in both directions
+}