#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
  #include <avr/power.h>
#endif

#define PIN 6

// Parameter 1 = number of pixels in strip
// Parameter 2 = Arduino pin number (most are valid)
// Parameter 3 = pixel type flags, add together as needed:
//   NEO_KHZ800  800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
//   NEO_KHZ400  400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
//   NEO_GRB     Pixels are wired for GRB bitstream (most NeoPixel products)
//   NEO_RGB     Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
//   NEO_RGBW    Pixels are wired for RGBW bitstream (NeoPixel RGBW products)
Adafruit_NeoPixel strip = Adafruit_NeoPixel(139, PIN, NEO_GRB + NEO_KHZ800);

// IMPORTANT: To reduce NeoPixel burnout risk, add 1000 uF capacitor across
// pixel power leads, add 300 - 500 Ohm resistor on first pixel's data input
// and minimize distance between Arduino and first pixel.  Avoid connecting
// on a live circuit...if you must, connect GND first.

void setup() {
  // This is for Trinket 5V 16MHz, you can remove these three lines if you are not using a Trinket
  #if defined (__AVR_ATtiny85__)
    if (F_CPU == 16000000) clock_prescale_set(clock_div_1);
  #endif
  // End of trinket special code


  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
}

void loop() {
  blueSparkle(50);
  rSlider(50); //red
  wSlider(50); //white
  bSlider(50); //blue
  // Some example procedures showing how to display to the pixels:
  colorWipe(strip.Color(255, 0, 0), 30); // Red
  colorWipe(strip.Color(127, 127, 127), 30); // White
  colorWipe(strip.Color(0, 0, 255), 30); // Blue
//colorWipe(strip.Color(0, 0, 0, 255), 50); // White RGBW
  // Send a theater pixel chase in...
  theaterChase(strip.Color(127, 0, 0), 50); // Red
  theaterChase(strip.Color(127, 127, 127), 50); // White
  theaterChase(strip.Color(0, 0, 127), 50); // Blue

  //rainbow(20);
  //rainbowCycle(20);
  //theaterChaseRainbow(50);
}

void rSlider(uint8_t wait) {
  int pos = 0, dir = 1; //position and direction of eye

  for(uint16_t i=0; i<(strip.numPixels()*4); i++) {
    int j;
    strip.setPixelColor(pos - 2, 0x100000); // Dark red
    strip.setPixelColor(pos - 1, 0x800000); // Medium red
    strip.setPixelColor(pos    , 0xFF3000); // Center pixel is brightest
    strip.setPixelColor(pos + 1, 0x800000); // Medium red
    strip.setPixelColor(pos + 2, 0x100000); // Dark red
    strip.show();
    delay(10);
    for(j=-2; j<= 2; j++) strip.setPixelColor(pos+j, 0);
    pos += dir;
    if(pos < 0) {
      pos = 1;
      dir = -dir;
    } else if(pos >= strip.numPixels()) {
      pos = strip.numPixels() - 2;
      dir = -dir;
    }
  }
}

void wSlider(uint8_t wait) {
  int pos = 0, dir = 1; //position and direction of eye

  for(uint16_t i=0; i<(strip.numPixels()*4); i++) {
    int j;
    strip.setPixelColor(pos - 2, 0x101010); // Dark red
    strip.setPixelColor(pos - 1, 0x7F7F7F); // Medium red
    strip.setPixelColor(pos    , 0xFFFFFF); // Center pixel is brightest
    strip.setPixelColor(pos + 1, 0x7F7F7F); // Medium red
    strip.setPixelColor(pos + 2, 0x101010); // Dark red
    strip.show();
    delay(10);
    for(j=-2; j<= 2; j++) strip.setPixelColor(pos+j, 0);
    pos += dir;
    if(pos < 0) {
      pos = 1;
      dir = -dir;
    } else if(pos >= strip.numPixels()) {
      pos = strip.numPixels() - 2;
      dir = -dir;
    }
  }
}

void bSlider(uint8_t wait) {
  int pos = 0, dir = 1; //position and direction of eye

  for(uint16_t i=0; i<(strip.numPixels()*4); i++) {
    int j;
    strip.setPixelColor(pos - 2, 0x000010); // Dark red
    strip.setPixelColor(pos - 1, 0x000080); // Medium red
    strip.setPixelColor(pos    , 0x0030FF); // Center pixel is brightest
    strip.setPixelColor(pos + 1, 0x000080); // Medium red
    strip.setPixelColor(pos + 2, 0x000010); // Dark red
    strip.show();
    delay(10);
    for(j=-2; j<= 2; j++) strip.setPixelColor(pos+j, 0);
    pos += dir;
    if(pos < 0) {
      pos = 1;
      dir = -dir;
    } else if(pos >= strip.numPixels()) {
      pos = strip.numPixels() - 2;
      dir = -dir;
    }
  }
}


void blueSparkle(uint8_t wait) {
  uint32_t blue = strip.Color(0, 0, 255);
  uint32_t red = strip.Color(255, 0, 0);
  uint32_t white = strip.Color(255, 255, 255);
  uint32_t off = strip.Color(0, 0, 0);

  for(uint16_t i=0; i<strip.numPixels(); i++) {
    strip.setPixelColor(i, blue);
  }
  strip.show();
  int pixel=0;
  for(int r=0; r<400; r++) {
    pixel = random(0,139);
    //int rColor = random(0,100);
    //if (rColor > 50) {
      strip.setPixelColor(pixel,white);
    //} else {
    //  strip.setPixelColor(pixel,red);
    //}
    strip.show();
    delay(50);
    strip.setPixelColor(pixel,blue);
    strip.show();
  }
  for(uint16_t i=0; i<strip.numPixels(); i++) {
    strip.setPixelColor(i, off);
  }
  strip.show();

  delay(wait);
}

// Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
  for(uint16_t i=0; i<strip.numPixels(); i++) {
    strip.setPixelColor(i, c);
    strip.show();
    delay(wait);
  }
}

void rainbow(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256; j++) {
    for(i=0; i<strip.numPixels(); i++) {
      strip.setPixelColor(i, Wheel((i+j) & 255));
    }
    strip.show();
    delay(wait);
  }
}

// Slightly different, this makes the rainbow equally distributed throughout
void rainbowCycle(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< strip.numPixels(); i++) {
      strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
    }
    strip.show();
    delay(wait);
  }
}

//Theatre-style crawling lights.
void theaterChase(uint32_t c, uint8_t wait) {
  for (int j=0; j<10; j++) {  //do 10 cycles of chasing
    for (int q=0; q < 3; q++) {
      for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
        strip.setPixelColor(i+q, c);    //turn every third pixel on
      }
      strip.show();

      delay(wait);

      for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
        strip.setPixelColor(i+q, 0);        //turn every third pixel off
      }
    }
  }
}

//Theatre-style crawling lights with rainbow effect
void theaterChaseRainbow(uint8_t wait) {
  for (int j=0; j < 256; j++) {     // cycle all 256 colors in the wheel
    for (int q=0; q < 3; q++) {
      for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
        strip.setPixelColor(i+q, Wheel( (i+j) % 255));    //turn every third pixel on
      }
      strip.show();

      delay(wait);

      for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
        strip.setPixelColor(i+q, 0);        //turn every third pixel off
      }
    }
  }
}

// Input a value 0 to 255 to get a color value.
// The colours are a transition r - g - b - back to r.
uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if(WheelPos < 85) {
    return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
  }
  if(WheelPos < 170) {
    WheelPos -= 85;
    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
  }
  WheelPos -= 170;
  return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
}