I'm tired and forgot to add two files to previous commits. :-/

include/effect_dynamic.h

@@ -21,3 +21,11 @@ class MultiDynamicEffect : public SingleDynamicEffect {
 public:
     void loop();
 };
+
+class BigDynamicEffect : public Effect {
+private:
+    Window* window = new Window(0, 0, LED_WIDTH, LED_HEIGHT-6);
+public:
+	void loop();
+    ~BigDynamicEffect();
+};

src/Window.cpp

@@ -11,6 +11,11 @@ void Window::setPixel(uint8_t x, uint8_t y, CRGB* color) {
 	leds[this->coordsToGlobalIndex(x, y)] = *color;
 }
 
+void Window::raisePixel(uint8_t x, uint8_t y, CRGB* color) {
+	if (x>=this->width || y>=this->height) return;
+	leds[this->coordsToGlobalIndex(x, y)] |= *color;
+}
+
 void Window::setPixelByIndex(uint16_t index, CRGB* color) {
 	uint8_t x = index % this->width;
 	uint8_t y = index / this->width;