Global strip offset in fader

include/Fader.h

@@ -5,6 +5,8 @@
 class Fader
 {
     public:
+        static const uint8_t STRIP_OFFSET = 3;
+
         struct Color {
             int16_t r, g, b, w;
 

src/Animation/ImageScrollerAnimation.cpp

@@ -41,7 +41,7 @@ void ImageScrollerAnimation::loop(uint64_t frame)
                 continue;
             }
 
-            int32_t s = (nstrip - strip - 1 + 5) % nstrip;
+            int32_t s = nstrip - strip - 1;
             m_fader->set_color(s, led, m_image.pixel(im_x, im_y));
         }
     }

src/Fader.cpp

@@ -111,6 +111,8 @@ void Fader::update(void)
 
 uint32_t Fader::make_module_idx(uint32_t strip, uint32_t module)
 {
+	strip = (strip + STRIP_OFFSET) % m_strips;
+
 	bool flip = m_flipStripsMask & (1 << strip);
 	if(flip) {
 		module = m_modulesPerStrip - module - 1;