water ripple effect with a dimmed rainbow background

wled00/FX.cpp

@@ -2133,7 +2133,7 @@ typedef struct Ripple {
   uint16_t pos;
 } ripple;
 
-uint16_t WS2812FX::mode_ripple()
+uint16_t WS2812FX::ripple_base(bool rainbow)
 {
   uint16_t maxRipples = 1 + (SEGLEN >> 2);
   if (maxRipples > 100) maxRipples = 100;
@@ -2143,8 +2143,25 @@ uint16_t WS2812FX::mode_ripple()
  
   Ripple* ripples = reinterpret_cast<Ripple*>(SEGENV.data);
 
-  fill(SEGCOLOR(1));
-
+  // ranbow background or chosen background, all very dim.
+  if (rainbow) {
+    if (SEGENV.call ==0) {
+      SEGENV.aux0 = random8();
+      SEGENV.aux1 = random8();
+    }
+    if (SEGENV.aux0 == SEGENV.aux1) {
+      SEGENV.aux1 = random8();
+    }
+    else if (SEGENV.aux1 > SEGENV.aux0) {
+      SEGENV.aux0++;
+    } else {
+      SEGENV.aux0--;
+    }
+    fill(color_blend(color_wheel(SEGENV.aux0),BLACK,235));
+  } else {
+    fill(SEGCOLOR(1));
+  }
+  
   //draw wave
   for (uint16_t i = 0; i < maxRipples; i++)
   {
@@ -2188,6 +2205,15 @@ uint16_t WS2812FX::mode_ripple()
   return FRAMETIME;
 }
 
+uint16_t WS2812FX::mode_ripple(void) {
+  return ripple_base(false);
+}
+
+uint16_t WS2812FX::mode_ripple_rainbow(void) {
+  return ripple_base(true);
+}
+
+
 
 //  TwinkleFOX by Mark Kriegsman: https://gist.github.com/kriegsman/756ea6dcae8e30845b5a
 //

wled00/FX.h

@@ -91,7 +91,7 @@
 #define IS_REVERSE      ((SEGMENT.options & REVERSE )     == REVERSE     )
 #define IS_SELECTED     ((SEGMENT.options & SELECTED)     == SELECTED    )
 
-#define MODE_COUNT  99
+#define MODE_COUNT  100
 
 #define FX_MODE_STATIC                   0
 #define FX_MODE_BLINK                    1
@@ -192,6 +192,7 @@
 #define FX_MODE_DRIP                    96
 #define FX_MODE_PLASMA                  97
 #define FX_MODE_PERCENT                 98
+#define FX_MODE_RIPPLE_RAINBOW          99
 
 class WS2812FX {
   typedef uint16_t (WS2812FX::*mode_ptr)(void);
@@ -379,6 +380,7 @@ class WS2812FX {
       _mode[FX_MODE_DRIP]                    = &WS2812FX::mode_drip;
       _mode[FX_MODE_PLASMA]                  = &WS2812FX::mode_plasma;
       _mode[FX_MODE_PERCENT]                 = &WS2812FX::mode_percent;
+      _mode[FX_MODE_RIPPLE_RAINBOW]          = &WS2812FX::mode_ripple_rainbow;
 
       _brightness = DEFAULT_BRIGHTNESS;
       currentPalette = CRGBPalette16(CRGB::Black);
@@ -562,7 +564,8 @@ class WS2812FX {
       mode_popcorn(void),
       mode_drip(void),
       mode_plasma(void),
-      mode_percent(void);
+      mode_percent(void),
+      mode_ripple_rainbow(void);
       
 
   private:
@@ -607,6 +610,7 @@ class WS2812FX {
       dissolve(uint32_t),
       chase(uint32_t, uint32_t, uint32_t, bool),
       gradient_base(bool),
+      ripple_base(bool),
       police_base(uint32_t, uint32_t),
       running(uint32_t, uint32_t),
       tricolor_chase(uint32_t, uint32_t),
@@ -642,7 +646,7 @@ const char JSON_mode_names[] PROGMEM = R"=====([
 "Scanner Dual","Stream 2","Oscillate","Pride 2015","Juggle","Palette","Fire 2012","Colorwaves","Bpm","Fill Noise",
 "Noise 1","Noise 2","Noise 3","Noise 4","Colortwinkles","Lake","Meteor","Meteor Smooth","Railway","Ripple",
 "Twinklefox","Twinklecat","Halloween Eyes","Solid Pattern","Solid Pattern Tri","Spots","Spots Fade","Glitter","Candle","Fireworks Starburst",
-"Fireworks 1D","Bouncing Balls","Sinelon","Sinelon Dual","Sinelon Rainbow","Popcorn","Drip","Plasma","Percent"
+"Fireworks 1D","Bouncing Balls","Sinelon","Sinelon Dual","Sinelon Rainbow","Popcorn","Drip","Plasma","Percent", "Ripple Rainbow"
 ])=====";