arduino.h

#include <FastLED.h>

// How many leds in your strip?
#define NUM_LEDS 60 

// For led chips like Neopixels, which have a data line, ground, and power, you just
// need to define DATA_PIN.  For led chipsets that are SPI based (four wires - data, clock,
// ground, and power), like the LPD8806, define both DATA_PIN and CLOCK_PIN
#define DATA_PIN 6
#define CLOCK_PIN 13

// Define the array of leds
CRGB leds[NUM_LEDS];

// Everything below until setup is rotary declarations
int val;
int encoder0PinA = 8;
int encoder0PinB = 9;
int encoder0PinALast = 0;
int n = LOW;
// button codes
const int buttonPin = 7;     // the number of the pushbutton pin

// variables will change:
int buttonPushCounter = 0;   // counter for the number of button presses
int buttonState = 0;         // current state of the button
int lastButtonState = 0;     // previous state of the button    // variable for reading the pushbutton status
int newDelay = 100;

void setup() { 
  Serial.begin(57600);
  Serial.println("resetting");
  LEDS.addLeds<WS2812B,DATA_PIN,GRB>(leds,NUM_LEDS);
  LEDS.setBrightness(50);
  // the rest of this function is rotary setup
  pinMode (encoder0PinA, INPUT);
  pinMode (encoder0PinB, INPUT);
  pinMode (buttonPin, INPUT);
}

void fadeall() { for(int i = 0; i < NUM_LEDS; i++) { leds[i].nscale8(250); } }

int getNewDelay() {
  n = digitalRead(encoder0PinA);
  if ((encoder0PinALast == LOW) && (n == HIGH)) {
    if (digitalRead(encoder0PinB) == LOW) {
      newDelay = newDelay + 10;
    } else {
      newDelay = newDelay - 10;
    }
  }
  encoder0PinALast = n;
  return newDelay;  
}

int getNewColor() {
  buttonState = digitalRead(buttonPin);

  // compare the buttonState to its previous state
  if (buttonState != lastButtonState) {
    // if the state has changed, increment the counter
    if (buttonState == HIGH) {
      // if the current state is HIGH then the button went from off to on:
      buttonPushCounter++;
    } else {
      // if the current state is LOW then the button went from on to off:
      Serial.println("off");
    }
    // Delay a little bit to avoid bouncing
    delay(50);
  }
  // save the current state as the last state, for next time through the loop
  lastButtonState = buttonState;
  if (buttonPushCounter % 3 == 0) {
    return 64;
  } else if (buttonPushCounter % 3 == 1) {
    return 0;
  } else if (buttonPushCounter % 3 == 2) {
    return 96;
  } else {
    return 0; 
  }
}

void loop() { 

  // First slide the led in one direction
  for(int i = 0; i < NUM_LEDS; i++) {
    // Set the i'th led to red 
    leds[i] = CHSV(getNewColor(), 255, 255);
    // Show the leds
    FastLED.show(); 
    // now that we've shown the leds, reset the i'th led to black
    // leds[i] = CRGB::Black;
    fadeall();
    // Wait a little bit before we loop around and do it again
    delay(getNewDelay());
  }

  // Now go in the other direction.  
  for(int i = (NUM_LEDS)-1; i >= 0; i--) {
    // Set the i'th led to red 
    leds[i] = CHSV(getNewColor(), 255, 255);
    // Show the leds
    FastLED.show();
    // now that we've shown the leds, reset the i'th led to black
    // leds[i] = CRGB::Black;
    fadeall();
    // Wait a little bit before we loop around and do it again
    delay(getNewDelay());
  }

  //the rest of this function is rotary code
  
}