karm-gfx: Added a simple helper function for generating colors in hue…

… order.

Pretty usefull for debugging

src/libs/karm-gfx/colors.cpp

@@ -0,0 +1,23 @@
+#include "colors.h"
+
+namespace Karm::Gfx {
+
+Color randomColor(Math::Rand &rand) {
+    return COLORS[rand.nextInt(COLORS.len())];
+}
+
+Color randomColor() {
+    static Math::Rand rand{123};
+    return randomColor(rand);
+}
+
+Gfx::Color rainbowColor() {
+    static f64 hue = 0;
+    auto res = Gfx::hsvToRgb({hue, 1, 1});
+    hue += 1;
+    if (hue > 360)
+        hue = 0;
+    return res;
+}
+
+} // namespace Karm::Gfx

src/libs/karm-gfx/colors.h

@@ -72,13 +72,10 @@ MAKE_COLOR_RAMP(ROSE, 0xfff1f2, 0xffe4e6, 0xfecdd3, 0xfda4af, 0xfb7185, 0xf43f5e
     PINK, ROSE
 };
 
-inline Color randomColor(Math::Rand &rand) {
-    return COLORS[rand.nextInt(COLORS.len())];
-}
+Color randomColor(Math::Rand &rand);
 
-inline Color randomColor() {
-    static Math::Rand rand{123};
-    return randomColor(rand);
-}
+Color randomColor();
+
+Gfx::Color rainbowColor();
 
 } // namespace Karm::Gfx