Working rainbow!

src/CMakeLists.txt

@@ -1,4 +1,5 @@
 target_sources(glez PRIVATE
+        "${CMAKE_CURRENT_LIST_DIR}/color.cpp"
         "${CMAKE_CURRENT_LIST_DIR}/draw.cpp"
         "${CMAKE_CURRENT_LIST_DIR}/glez.cpp"
         "${CMAKE_CURRENT_LIST_DIR}/font.cpp"

src/color.cpp

@@ -0,0 +1,25 @@
+/*
+ * Created by Rebekah Rowe on 04.07.22. GPL3
+ */
+
+#include <cmath>
+#include <chrono>
+#include <iostream>
+#include <glm/gtx/color_space.hpp>
+
+#include <glez/color.hpp>
+
+namespace glez::color {
+
+static auto start_time = std::chrono::steady_clock::now();
+rgba RainbowCurrent() {
+    std::chrono::duration<float, std::deca> ctime = std::chrono::steady_clock::now() - start_time;
+    auto ret_raw = glm::rgbColor(glm::vec3(fabs(sin(ctime.count())) * 360.0f, 0.85f, 0.9f));
+    rgba ret;
+    ret.r = ret_raw.r;
+    ret.g = ret_raw.g;
+    ret.b = ret_raw.b;
+    return ret;
+}
+
+} // namespace glez::color