#include <Adafruit_NeoPixel.h>

#define NUMPIXELS 48  // Number of Neopixels
#define PIN 13          // Pin number to which Neopixel data line is connected

Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

int32_t Wheel(byte WheelPos)
{
  return pixels.Color(255 - (WheelPos * 2), 255 - (WheelPos * 2), 0);
}

void theflow(int8_t wait) {
  int16_t i, j;

  for(j=0; j<=255; j--) {
     for(i=NUMPIXELS; i>=0; i--) { //plus plus or minus minus
      int32_t whl = Wheel((i+j));
      pixels.setPixelColor(i, whl);
    }
    pixels.show();
    delay(wait);
  }
}

void setup() {
  pixels.begin();  // Initialize Neopixels
}

void loop() {
  theflow(10);
  // Turn off Neopixels from 101 to 200
  // for (int i = 10; i < NUMPIXELS; i++) {
  //   pixels.setPixelColor(i, pixels.Color(0, 0, 255));  // Set Neopixel color to off (black)
  // }
  // pixels.show();  // Update Neopixels

  // // Trigger Neopixels from 0 to 10
  // for (int i = 20; i >= 0; i--) {
  //   pixels.setPixelColor(i, pixels.Color(255, 0, 0));  // Set Neopixel color to red
  //   pixels.show();  // Send the updated color information to the Neopixels
  //   delay(10);      // Delay for a short duration to create the sequential effect
  // }
  // delay(2000);    // Wait for 1 second before turning off Neopixels
  // // pixels.clear(); // Turn off all Neopixels
  // pixels.show();  // Send the updated color information to turn off Neopixels
}