#include <FastLED.h>

FASTLED_USING_NAMESPACE

// FastLED "100-lines-of-code" demo reel, showing just a few
// of the kinds of animation patterns you can quickly and easily
// compose using FastLED.
//
// This example also shows one easy way to define multiple
// animations patterns and have them automatically rotate.
//
// -Mark Kriegsman, December 2014

#if defined(FASTLED_VERSION) && (FASTLED_VERSION < 3001000)
#warning "Requires FastLED 3.1 or later; check github for latest code."
#endif

#define DATA_PIN    3
//#define CLK_PIN   4
#define LED_TYPE    WS2811
#define COLOR_ORDER GRB
#define NUM_LEDS    64
CRGB leds[NUM_LEDS];

#define BRIGHTNESS          96
#define FRAMES_PER_SECOND  120

void setup() {
  delay(3000); // 3 second delay for recovery

  // tell FastLED about the LED strip configuration
  FastLED.addLeds<LED_TYPE, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
  //FastLED.addLeds<LED_TYPE,DATA_PIN,CLK_PIN,COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);

  // set master brightness control
  FastLED.setBrightness(BRIGHTNESS);
}


// List of patterns to cycle through.  Each is defined as a separate function below.
typedef void (*SimplePatternList[])();
// SimplePatternList gPatterns = { pulsate, rainbow, rainbowWithGlitter, confetti, sinelon, juggle, bpm };
SimplePatternList gPatterns = { pulsate, that_one_line };

uint8_t gCurrentPatternNumber = 0; // Index number of which pattern is current
uint8_t gHue = 0; // rotating "base color" used by many of the patterns

void loop()
{
  // Call the current pattern function once, updating the 'leds' array
  gPatterns[gCurrentPatternNumber]();

  // send the 'leds' array out to the actual LED strip
  FastLED.show();
  // insert a delay to keep the framerate modest
  FastLED.delay(1000 / FRAMES_PER_SECOND);

  // do some periodic updates
  EVERY_N_MILLISECONDS( 20 ) {
    gHue++;  // slowly cycle the "base color" through the rainbow
  }
  EVERY_N_SECONDS( 10 ) {
    nextPattern();  // change patterns periodically
  }
}

#define ARRAY_SIZE(A) (sizeof(A) / sizeof((A)[0]))

void nextPattern()
{
  // add one to the current pattern number, and wrap around at the end
  gCurrentPatternNumber = (gCurrentPatternNumber + 1) % ARRAY_SIZE( gPatterns);
}

void rainbow()
{
  // FastLED's built-in rainbow generator
  fill_rainbow( leds, NUM_LEDS, gHue, 7);
}

void rainbowWithGlitter()
{
  // built-in FastLED rainbow, plus some random sparkly glitter
  rainbow();
  addGlitter(80);
}

void addGlitter( fract8 chanceOfGlitter)
{
  if ( random8() < chanceOfGlitter) {
    leds[ random16(NUM_LEDS) ] += CRGB::White;
  }
}

void confetti()
{
  // random colored speckles that blink in and fade smoothly
  fadeToBlackBy( leds, NUM_LEDS, 10);
  int pos = random16(NUM_LEDS);
  leds[pos] += CHSV( gHue + random8(64), 200, 255);
}

void sinelon()
{
  // a colored dot sweeping back and forth, with fading trails
  fadeToBlackBy( leds, NUM_LEDS, 20);
  int pos = beatsin16( 13, 0, NUM_LEDS - 1 );
  leds[pos] += CHSV( gHue, 255, 192);
}

void bpm()
{
  // colored stripes pulsing at a defined Beats-Per-Minute (BPM)
  uint8_t BeatsPerMinute = 62;
  CRGBPalette16 palette = PartyColors_p;
  uint8_t beat = beatsin8( BeatsPerMinute, 64, 255);
  for ( int i = 0; i < NUM_LEDS; i++) { //9948
    leds[i] = ColorFromPalette(palette, gHue + (i * 2), beat - gHue + (i * 10));
  }
}

void juggle() {
  // eight colored dots, weaving in and out of sync with each other
  fadeToBlackBy( leds, NUM_LEDS, 20);
  byte dothue = 0;
  for ( int i = 0; i < 8; i++) {
    leds[beatsin16( i + 7, 0, NUM_LEDS - 1 )] |= CHSV(dothue, 200, 255);
    dothue += 32;
  }
}

void pulsate() {
  FastLED.clear();
  static int brightness = 0;
  static int fadeAmount = 5;  // Set the amount to fade I usually do 5, 10, 15, 20, 25 etc even up to 255.

  for (int i = 0; i < NUM_LEDS; i++ ) {
    leds[i].setRGB(255, 255, 255); // setRGB functions works by setting
    // (RED value 0-255, GREEN value 0-255, BLUE value 0-255)
    // RED = setRGB(255,0,0)
    // GREEN = setRGB(0,255,0)
    leds[i].fadeLightBy(brightness);
  }

  brightness = brightness + fadeAmount;

  // reverse the direction of the fading at the ends of the fade:
  if (brightness == 0 || brightness == 250) {
    fadeAmount = -fadeAmount;
  }
}

void that_one_line() {
  FastLED.clear();
  leds[1]. setRGB ( 255, 255, 255);
  leds[2]. setRGB ( 255, 255, 255);
  leds[3]. setRGB ( 255, 255, 255);
  leds[4]. setRGB ( 255, 255, 255);
  leds[5]. setRGB ( 255, 255, 255);
  leds[6]. setRGB ( 255, 255, 255);
  leds[7]. setRGB ( 255, 255, 255);
  leds[8]. setRGB ( 255, 255, 255);
  leds[9]. setRGB ( 255, 255, 255);
  leds[10]. setRGB ( 255, 255, 255);
  leds[11]. setRGB ( 255, 255, 255);
  leds[12]. setRGB ( 255, 255, 255);
  leds[13]. setRGB ( 255, 255, 255);
  leds[14]. setRGB ( 255, 255, 255);
  leds[15]. setRGB ( 255, 255, 255);
  leds[16]. setRGB ( 255, 255, 255);
  leds[17]. setRGB ( 255, 255, 255);
  leds[18]. setRGB ( 255, 255, 255);
  leds[19]. setRGB ( 255, 255, 255);
  leds[20]. setRGB ( 255, 255, 255);
  leds[21]. setRGB ( 255, 255, 255);
  leds[22]. setRGB ( 255, 255, 255);
  leds[23]. setRGB ( 255, 255, 255);
  leds[24]. setRGB ( 255, 255, 255);
  leds[25]. setRGB ( 255, 255, 255);
  leds[26]. setRGB ( 255, 255, 255);
  leds[27]. setRGB ( 255, 255, 255);
  leds[28]. setRGB ( 255, 255, 255);
  leds[29]. setRGB ( 255, 255, 255);
  leds[30]. setRGB ( 255, 255, 255);
}