Color interpolation effect

espmusicmouse/lib/ledtl/containers/LedStripRGBW.h

@@ -26,6 +26,15 @@ public:
     data_[idx] = (g << 0) | (r << 8) | (b << 16) | (w << 24);
   }
 
+  void getRGBW(int idx, uint8_t &r, uint8_t &g, uint8_t &b, uint8_t &w)
+  {
+    idx = normalizeIdx(idx);
+    g = (data_[idx] >> 0) & 0xff;
+    r = (data_[idx] >> 8) & 0xff;
+    b = (data_[idx] >> 16) & 0xff;
+    w = (data_[idx] >> 24) & 0xff;
+  }
+
   const uint32_t *rawData() const { return data_; }
   constexpr static int numLeds() { return TNumLeds; }
 
@@ -89,4 +98,12 @@ void clear(LedStripRGBW<TNumLeds> &s)
 {
   for (int i = 0; i < TNumLeds; ++i)
     s.set(i, 0, 0, 0, 0);
-}
+}
+
+template <int TNumLeds>
+ColorRGBW getLedRGBW(LedStripRGBW<TNumLeds> &s, int idx)
+{
+  ColorRGBW res;
+  s.getRGBW(idx, res.r, res.g, res.b, res.w);
+  return res;
+}