#include <FastLED.h>    
#define DATA_PIN     2
#define NUM_LEDS    50
#define MAX_BRIGHTNESS 255
#define BRIGHTNESS  100   // MAX is 255
#define LED_TYPE    WS2811
CRGB leds[NUM_LEDS];
void setup()     {
 Serial.begin(9600);
 FastLED.addLeds<LED_TYPE, DATA_PIN, RGB>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
 FastLED.setBrightness(BRIGHTNESS);
}

CRGB black = CRGB::Black;
CRGB red = CRGB::Red;
CRGB pink = CRGB::Magenta;
CRGB blue = CRGB::Blue;
CRGB yellow = CRGB::LightYellow;
CRGB white = CRGB::White;
CRGB purp = CRGB::Purple;

int per[26] ={0,1,4,2,5,8,13,9,14,21,15,22,16,26,27,33,28,34,38,42,39,43,45,47,46,48};
//at 23 (start up right) and 27 (start left on left perimeter) are points of change

int full[49]={0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48};
// right half from 1 to 27
//left half from 23 to 49

void loop() {
 //full_flash(array, from, to, color, delay); Every led lights up at same time (1 color)
 //onebyone_add(array, from, to, color1, color2, delay); Every led in section of array one by one with 2 diff colors
 //fade_two(array, from, to, numcolor, numcolor, skipval, delay); section fade through 2 colors
 //10 red, 50 yellow, 80 green, 120 green blue, 180 lavander, 200 purple, 245 pink
 //colorhue(skipdist, delay); fades through entire rainbow
 //flicker(array, from, to, color1, color2, minDelay, maxDelay); light up at random delay speeds
 //alt_blink(array, from, to, color1, color2, onTime, offTime);
//  onebyone_add(full,0,49,white,blue,50);
 fade_two(full, 0, 48, 500, 150, 5, 25);
 onebyone_add(full, 0, 48, blue, white, 25);
 fade_two(full, 0, 48, 500, 255, 5, 25);
 onebyone_add(full, 0, 48, white, pink, 25);
 full_flash(full, 0, 48, white, 25);
 colorhue(10, 25);
 full_flash(per,0,25,white,30);



}

void full_flash(int sec[], int from, int to, CRGB color, int dly) {
 for (int x = from; x <= to; x++) {
   leds[sec[x]]=color;
   FastLED.delay(dly);
 }
}

void onebyone_add(int sec[], int from, int to, CRGB color1, CRGB color2, int dly){
 for (int x = from; x <= to; x++ ) {
   leds[sec[x]] = color1;
   FastLED.delay(dly);
   leds[sec[x+2]] = color2;
   FastLED.delay(dly);
 }
}

void fade_two(int sec[], int from, int to, int color1, int color2, int skipval, int dly) {
 int hue[2]= {color1,color2};
 for (int c = 0; c < 2; c++) {
   for (int v = 255; v >= 0; v=v-skipval) {
     for (int x = from; x <= to; x++) {
       leds[sec[x]] = CHSV(hue[c], 255, v);
     }
     FastLED.delay(dly);
   }
 }
}

//fades through each color for all leds
void colorhue(int skipdist, int dly) {
 int h = 255;
 int s = 255;
 int v = 255;
 while (h>0){
   for (int x = 0; x < NUM_LEDS; x++) {
     leds[x] = CHSV(h,s,v);
   }
   FastLED.delay(dly);
   h=h-skipdist;
 }
}

void alt_blink(int sec[], int from, int to, CRGB color1, CRGB color2, int onTime, int offTime) {
 for (int x = from; x <= to; x++) {
   leds[sec[x]] = color1;
   FastLED.show();
   delay(onTime);
   leds[sec[x]] = color2;
   FastLED.show();
   delay(offTime);
 }
}

//lights up at random flickers
void flicker(int sec[], int from, int to, CRGB color1, CRGB color2, int minDelay, int maxDelay) {
 for (int x = from; x <= to; x++) {
   leds[sec[x]] = color1;
   FastLED.delay(random(minDelay, maxDelay));
   leds[sec[x]] = color2;
   FastLED.delay(random(minDelay, maxDelay));
 }
}