DNA

//2 DNA spiral
//16x16 rgb led matrix demo
//Yaroslaw Turbin 31.07.2020
//https://vk.com/ldirko
//https://www.reddit.com/user/ldirko/
//https://www.reddit.com/r/FastLED/comments/gogs4n/i_made_7x11_matrix_for_my_ntp_clock_project_then/


#include "FastLED.h"

// Matrix size
#define NUM_ROWS 16
#define NUM_COLS 16

// LEDs pin
#define DATA_PIN 3

// LED brightness
#define BRIGHTNESS 255

#define NUM_LEDS NUM_ROWS * NUM_COLS

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

#define mn 255/(NUM_COLS*2)
#define speeds 30
#define freq 10

void setup() {
  FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);
  FastLED.setBrightness(BRIGHTNESS);
}

void loop() {

 fadeToBlackBy(leds, NUM_LEDS, 100);

  for (int i = 0; i < NUM_ROWS; i++)
 {
    uint16_t ms = millis();
    leds [i * NUM_COLS + beatsin8(speeds, 0, NUM_COLS-1, 0, i * freq)] += CHSV( ms / 29+i*255/(NUM_ROWS-1), 255, beatsin8(speeds, 30, BRIGHTNESS, 0, i * mn+64));
    leds [i * NUM_COLS + beatsin8(speeds, 0, NUM_COLS-1, 0, 128 + i * freq)] += CHSV(  ms / 29+i*255/(NUM_ROWS-1)+128, 255,  beatsin8(speeds, 30, BRIGHTNESS, 0, i * mn + 128+64));
  }

  blur2d( leds, NUM_COLS, NUM_ROWS, 64);

  FastLED.delay(1);

}


uint16_t XY (uint8_t x, uint8_t y) { return (y * NUM_COLS + x);}