added function to generate random palette based on harmonic color theory

wled00/FX_fcn.cpp

@@ -77,8 +77,8 @@ uint16_t Segment::_usedSegmentData = 0U; // amount of RAM all segments use for t
 uint16_t Segment::maxWidth = DEFAULT_LED_COUNT;
 uint16_t Segment::maxHeight = 1;
 
-CRGBPalette16 Segment::_randomPalette = generateRandomPalette(&_randomPalette);
-CRGBPalette16 Segment::_newRandomPalette = generateRandomPalette(&_randomPalette);
+CRGBPalette16 Segment::_randomPalette = generateRandomPalette(_randomPalette);
+CRGBPalette16 Segment::_newRandomPalette = generateRandomPalette(_randomPalette);
 unsigned long Segment::_lastPaletteChange = 0; // perhaps it should be per segment
 
 #ifndef WLED_DISABLE_MODE_BLEND
@@ -223,7 +223,7 @@ CRGBPalette16 IRAM_ATTR &Segment::loadPalette(CRGBPalette16 &targetPalette, uint
     case 1: {//periodically replace palette with a random one
       unsigned long timeSinceLastChange = millis() - _lastPaletteChange;
       if (timeSinceLastChange > randomPaletteChangeTime * 1000U) {
-        _newRandomPalette = generateRandomPalette(&_randomPalette);
+        _newRandomPalette = generateRandomPalette(_randomPalette);
         _lastPaletteChange = millis();
         handleRandomPalette(); // do a 1st pass of blend
       }

wled00/colors.cpp

@@ -95,11 +95,11 @@ void setRandomColor(byte* rgb)
  *generates a random palette based on color theory
  */
 
-CRGBPalette16 generateRandomPalette(CRGBPalette16* basepalette) 
+CRGBPalette16 generateRandomPalette(CRGBPalette16 &basepalette) 
 {
   CHSV palettecolors[4]; //array of colors for the new palette
   uint8_t keepcolorposition = random8(4); //color position of current random palette to keep
-  palettecolors[keepcolorposition] = rgb2hsv_approximate(basepalette->entries[keepcolorposition*5]); //read one of the base colors of the current palette
+  palettecolors[keepcolorposition] = rgb2hsv_approximate(basepalette.entries[keepcolorposition*5]); //read one of the base colors of the current palette
   palettecolors[keepcolorposition].hue += random8(20)-10; // +/- 10 randomness
   //generate 4 saturation and brightness value numbers
   //only one saturation is allowed to be below 200 creating mostly vibrant colors
@@ -184,10 +184,17 @@ CRGBPalette16 generateRandomPalette(CRGBPalette16* basepalette)
     j++;
    }
 
-  return CRGBPalette16( palettecolors[0],
-                        palettecolors[1],
-                        palettecolors[2],
-                        palettecolors[3]);
+   //apply gamma correction
+  CRGB RGBpalettecolors[4];
+  for (int i = 0; i<4; i++) {
+    RGBpalettecolors[i] = (CRGB)palettecolors[i]; //convert to RGB
+    RGBpalettecolors[i] = gamma32((uint32_t)RGBpalettecolors[i]);
+  }
+
+  return CRGBPalette16( RGBpalettecolors[0],
+                        RGBpalettecolors[1],
+                        RGBpalettecolors[2],
+                        RGBpalettecolors[3]);
 
 }
 

wled00/fcn_declare.h

@@ -65,7 +65,7 @@ class NeoGammaWLEDMethod {
 uint32_t color_blend(uint32_t,uint32_t,uint16_t,bool b16=false);
 uint32_t color_add(uint32_t,uint32_t, bool fast=false);
 uint32_t color_fade(uint32_t c1, uint8_t amount, bool video=false);
-CRGBPalette16 generateRandomPalette(CRGBPalette16* basepalette);
+CRGBPalette16 generateRandomPalette(CRGBPalette16 &basepalette);
 inline uint32_t colorFromRgbw(byte* rgbw) { return uint32_t((byte(rgbw[3]) << 24) | (byte(rgbw[0]) << 16) | (byte(rgbw[1]) << 8) | (byte(rgbw[2]))); }
 void colorHStoRGB(uint16_t hue, byte sat, byte* rgb); //hue, sat to rgb
 void colorKtoRGB(uint16_t kelvin, byte* rgb);

wled00/wled.h

@@ -177,6 +177,8 @@ using PSRAMDynamicJsonDocument = BasicJsonDocument<PSRAM_Allocator>;
 #define PSRAMDynamicJsonDocument DynamicJsonDocument
 #endif
 
+#define FASTLED_INTERNAL //remove annoying pragma messages
+#define USE_GET_MILLISECOND_TIMER
 #include "FastLED.h"
 #include "const.h"
 #include "fcn_declare.h"