// Date: 03/12/2025
// Experiment No: 07
// Name: Rajaram Parida
// Redg: 2241016203
// Section: 224101028

// Objective 5

#include <Adafruit_NeoPixel.h>

#define LED_PIN 7
#define NUM_LEDS 30

Adafruit_NeoPixel strip(NUM_LEDS, LED_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  strip.begin();
  strip.show();
}

void loop() {
  rainbowCycle(5);
  colorFade(255, 0, 0, 0, 0, 255, 5); 
  colorChase(strip.Color(0, 255, 0), 50);
  colorChase(strip.Color(255, 0, 255), 50);
  colorChase(strip.Color(0, 255, 255), 50);
}

void rainbowCycle(uint8_t wait) {
  for(long first = 0; first < 256 * 5; first++) {
    for(int i = 0; i < NUM_LEDS; i++) {
      int pixel = (i * 256 / NUM_LEDS + first) & 255;
      strip.setPixelColor(i, Wheel(pixel));
    }
    strip.show();
    delay(wait);
  }
}

void colorFade(byte r1, byte g1, byte b1, byte r2, byte g2, byte b2, int speed) {
  for(int i = 0; i <= 255; i++) {
    int r = map(i, 0, 255, r1, r2);
    int g = map(i, 0, 255, g1, g2);
    int b = map(i, 0, 255, b1, b2);
    for(int p = 0; p < NUM_LEDS; p++) strip.setPixelColor(p, strip.Color(r, g, b));
    strip.show();
    delay(speed);
  }
}

void colorChase(uint32_t c, int wait) {
  for(int i = 0; i < NUM_LEDS; i++) {
    strip.setPixelColor(i, c);
    strip.show();
    delay(wait);
    strip.setPixelColor(i, 0);
  }
}

uint32_t Wheel(byte p) {
  p = 255 - p;
  if(p < 85) return strip.Color(255 - p * 3, 0, p * 3);
  if(p < 170) p -= 85;
  else p -= 170;
  return (p < 85) ? strip.Color(0, p * 3, 255 - p * 3) : strip.Color(p * 3, 255 - p * 3, 0);
}