#include <FastLED.h>
#define LED_PIN 12
#define WIDTH 12
#define HEIGHT 12
#define NUM_LEDS 144

CRGB leds[NUM_LEDS];
// The 32bit version of our coordinates
static uint16_t x;
static uint16_t y;
static uint16_t z;
uint16_t speed = 20;

// uint16_t scale = 1; // mostly just solid colors
// uint16_t scale = 4011; // very zoomed out and shimmery
uint16_t scale = 2026; // very zoomed out and shimmery
// uint16_t scale = 311;

// This is the array that we keep our computed noise values in
uint16_t noise[WIDTH][HEIGHT];

void fillnoise8() {
  for (int i = 0; i < WIDTH; i++) {
    int i_offset = scale * i;
    for (int j = 0; j < HEIGHT; j++) {
      int j_offset = scale * j;
      noise[i][j] = inoise8(x + i_offset, y + j_offset, z);
    }
  }
  z += speed;
}

void setup() { 
  FastLED.addLeds<WS2812, LED_PIN>(leds, NUM_LEDS);
  // Initialize our coordinates to some random values
  x = random16();
  y = random16();
  z = random16();
}

void loop() {
  static uint8_t ihue=0;
  fillnoise8();
  for (int i = 0; i < WIDTH; i++) {
    for (int j = 0; j < HEIGHT; j++) {
      // leds[i + (j * HEIGHT)] = CHSV(ihue + (noise[j][i]>>2),255,255);
      leds[i + (j * HEIGHT)] = CHSV(noise[j][i],255,255);
      // leds[i + (j * HEIGHT)] = CHSV(ihue + i + (j*HEIGHT), 255, ihue % 255);
    }
  }
  FastLED.show();
  // ihue++;
  delay(50);
}