//Hipnotic_RGB
//241 LED ring cilindrical map 
//Fastled rgb led demo
//Yaroslaw Turbin, 25-03-2021 
//https://vk.com/ldirko 
//https://www.reddit.com/user/ldirko/ 
//https://twitter.com/ldir_ko


#include <FastLED.h>

#define DATA_PIN     3
#define LED_COLS 16          // resolution for cilindrical lookup table
#define LED_ROWS 16          // resolution for cinindrical lookup table
#define NUM_LEDS    256

#define LED_TYPE    WS2812B          //leds type
#define COLOR_ORDER GRB              //color order of leds

#define BRIGHTNESS 255
CRGB leds[NUM_LEDS+1];  //one safe pixel in bottom. its index 2410
#define petals 6

bool setupm = 1;
const uint8_t C_X = LED_COLS / 2;
const uint8_t C_Y = LED_ROWS / 2;
const uint8_t mapp = 255 / LED_COLS;
struct{
  uint8_t angle;
  uint8_t radius;
} rMap[LED_COLS][LED_ROWS];





void setup() {
  FastLED.addLeds<LED_TYPE, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS)

 .setCorrection( TypicalLEDStrip );

   
 
  FastLED.clear();
} 
void loop() {
static byte speed = 2;

LEDS.show();
//+++++++++++++++++++++++++++
 // FastLED.clear();
  if (setupm) {
    setupm = 0;
    for (int8_t x = -C_X; x < C_X + (LED_COLS % 2); x++) {
      for (int8_t y = -C_Y; y < C_Y + (LED_ROWS % 2); y++) {
        rMap[x + C_X][y + C_Y].angle = 128 * (atan2(y, x) / PI);
        rMap[x + C_X][y + C_Y].radius = hypot(x, y) * mapp; //thanks Sutaburosu
      }
    }
  }

  
  static uint32_t t;
  t += speed;
  for (uint8_t x = 0; x < LED_COLS; x++) {
    for (uint8_t y = 0; y < LED_ROWS; y++) {
      byte angle = rMap[x][y].angle;
      byte radius = rMap[x][y].radius;
      leds[XY(x, y)] = CHSV(255,181,sin8(t-radius+sin8(t - angle*petals)/5));

    }
  }
  delay(20);

//+++++++++++++++++++++++++




}


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