forgot to commit everything...

user/Rainbow.h

@@ -0,0 +1,45 @@
+#ifndef RAINBOW_H
+#define RAINBOW_H
+
+
+#include "ESP8266lib/ext/led/WS2812B.h"
+
+/**
+ * show rainbow colors using HUE
+ */
+class Rainbow {
+
+    uint8_t hue = 0;
+
+public:
+
+    /** ctor */
+    Rainbow() {
+        ;
+    }
+
+    /** show a beat by shifting the hue color */
+    void shift(const int val) {
+        hue += val;
+    }
+
+    /** set hue back to 0 */
+    void restart() {
+        hue = 0;
+    }
+
+    /** called from the main */
+    void update() {
+        ++hue;
+    }
+
+    /** called from the main */
+    Color getCurrent() const {
+        Color c; c.setHSV(hue, 255, 255);
+        return c;
+    }
+
+};
+
+
+#endif // RAINBOW_H