// Simple NeoPixel test.  Lights just a few pixels at a time so a
// 1m strip can safely be powered from Arduino 5V pin.  Arduino
// may nonetheless hiccup when LEDs are first connected and not
// accept code.  So upload code first, unplug USB, connect pixels
// to GND FIRST, then +5V and digital pin 6, then re-plug USB.
// A working strip will show a few pixels moving down the line,
// cycling between red, green and blue.  If you get no response,
// might be connected to wrong end of strip (the end wires, if
// any, are no indication -- look instead for the data direction
// arrows printed on the strip).
#include "OmNeo.h" 
#include <Adafruit_NeoPixel.h>

#define UNO 1

#if UNO
#define PIN 8

#elif D1MINI
#define PIN D8
#endif

#define N_LEDS 16
 
OmNeoGrid *g4 = NULL;
//OmNeo4x4 *g4 = NULL;
void setup() 
{
  g4 = new OmNeoGrid(PIN, 4, 4);
  Serial.begin(115200);      // open the serial port at 9600 bps:    

  
}

int ticks = 0;
void loop() 
{
  ticks++;

  float ra = 123;
  float radius = 3.75;
  float fx = radius * sin(ticks / ra) + 1.5;
  float fy = radius * sin(ticks / (ra + 1.7755)) + 1.5;

  float fr = cos(ticks / 200.1) * 120 + 128;
  float fg = sin(ticks / 205.39484) * 120 + 128;
  float fb = cos(ticks / 211.1992) * 120 + 128;

//  fr *= .1;
//  fg *= .1;
//  fb *= .1;
  g4->clear();

//  g4->setPixelXy(1,1,0x000010);

  g4->drawGradientDisk(fx, fy, 3.6, g4->color(fr, fg, fb));
  g4->drawRect(2.5, 2.5, 3.5, 3.5, 0x000800);

  g4->drawGradientDisk(1.5 ,1.5, 2.2 ,0x090000);

//  g4->setPixelXy(1, 0, g4->color(100,0,0));
//  g4->setPixelXy(0, 2, g4->color(100,0,50));
//  g4->setPixelXy(2, 1, g4->color(22,ticks & 200,10));
  g4->show();
  delay(3);
  return;  
}