#include <Adafruit_NeoPixel.h>
#include <Plaquette.h>
 
#define NEOPIXEL_PIN 6

Adafruit_NeoPixel strip = Adafruit_NeoPixel(16, NEOPIXEL_PIN, NEO_GRB + NEO_KHZ800);

// Parameter 1 = number of pixels in strip
// Parameter 2 = Arduino pin number (most are valid)
// Parameter 3 = pixel type flags, add together as needed:
// NEO_KHZ800  800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
// NEO_KHZ400  400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
// NEO_GRB     Pixels are wired for GRB bitstream (most NeoPixel products)
// NEO_RGB     Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)

// IMPORTANT: To reduce NeoPixel burnout risk, add 1000 uF capacitor across
// pixel power leads, add 300 - 500 Ohm resistor on first pixel's data input
// and minimize distance between Arduino and first pixel.  Avoid connecting
// on a live circuit...if you must, connect GND first.

SquareWave wave(5.0, 0.25);

TriangleWave lfo(15.0, 0);
SineWave sine(3.0);

DigitalIn button(2, INTERNAL_PULLUP);

boolean reverse = false;
void begin() 
{
  button.debounce();
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
  button.onRise([]() { reverse = !reverse; });
}
 
void step() {
  sine.period( lfo.mapTo(0.5, 3) );
  if (reverse)
    sine.reverse();

  // for(uint16_t i=0; i<strip.numPixels(); i++) {
  //   strip.setPixelColor(i, strip.Color( sine.mapTo(0, 255), 0, 0 ));
  // }

  for(uint16_t i=0; i<strip.numPixels(); i++) {
    float value = sine.shiftBy( mapFloat(i, 0, strip.numPixels()-1, 0, 3) );
    strip.setPixelColor(i, strip.Color(value*255, 0, 0) );
  }

  strip.show();
}