prebuilt.h

#ifndef PREBUILT_LIB
#define PREBUILT_LIB

#define COOLING  55
#define SPARKING 120
bool gReverseDirection = false;
void Fire2012()
{
// Array of temperature readings at each simulation cell
  static byte heat[NUM_LEDS];

  // Step 1.  Cool down every cell a little
    for( int i = 0; i < NUM_LEDS; i++) {
      heat[i] = qsub8( heat[i],  random8(0, ((COOLING * 10) / NUM_LEDS) + 2));
    }
  
    // Step 2.  Heat from each cell drifts 'up' and diffuses a little
    for( int k= NUM_LEDS - 1; k >= 2; k--) {
      heat[k] = (heat[k - 1] + heat[k - 2] + heat[k - 2] ) / 3;
    }
    
    // Step 3.  Randomly ignite new 'sparks' of heat near the bottom
    if( random8() < SPARKING ) {
      int y = random8(7);
      heat[y] = qadd8( heat[y], random8(160,255) );
    }

    // Step 4.  Map from heat cells to LED colors
    for( int j = 0; j < NUM_LEDS; j++) {
      CRGB color = HeatColor( heat[j]);
      int pixelnumber;
      if( gReverseDirection ) {
        pixelnumber = (NUM_LEDS-1) - j;
      } else {
        pixelnumber = j;
      }
      _LEDS[pixelnumber] = color;
    }
}

void Rainbow() {
  static uint8_t hue = 0;
  for(int i = 0; i < NUM_STRIPS; i++) {
    for(int j = 0; j < NUM_LEDS_PER_STRIP; j++) {
      _LEDS[(i*NUM_LEDS_PER_STRIP) + j] = CHSV((32*i) + hue+j,192,255);
    }
  }

  // Set the first n leds on each strip to show which strip it is
  for(int i = 0; i < NUM_STRIPS; i++) {
    for(int j = 0; j <= i; j++) {
      _LEDS[(i*NUM_LEDS_PER_STRIP) + j] = CRGB::Red;
    }
  }

  hue++;
}

#endif