// Drawing Circle and  filled Circle

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

#define OLED_RESET -1
#define SCREEN_ADRESS 0x3C
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

void setup(){
  Serial.begin(115200);
  // Initialize OLED Object
  if(!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADRESS)){
    Serial.println(F("SSD1306 allocation failed"));
    for(;;)
    {

    }
  }
  display.clearDisplay();
}

void loop(){
  
  // Draw Rectangle
  display.setCursor(0, 0);
  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.println("Circle");
  display.drawCircle(20,35,20,WHITE);  // center at(20,35) and radius 20
  display.display();
  delay(2000);
  display.clearDisplay();

  // Draw filled Rectangle
  display.setCursor(0, 0);
  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.println("Filled Circle");
  display.fillCircle(20,35,20,WHITE);
  display.display();
  delay(2000);
  display.clearDisplay();

}