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

#define OLED_RESET          -1
#define LOGO16_GLCD_HEIGHT  64
#define LOGO16_GLCD_WIDTH   128

#define CUBE_Ax 10
#define CUBE_Ay 10
#define CUBE_Bx 10
#define CUBE_By 20
#define CUBE_Cx 20
#define CUBE_Cy 10
#define CUBE_Dx 20
#define CUBE_Dy 20

// create the display object
Adafruit_SSD1306 display(OLED_RESET);

void setup() {

  // initialize the display
  // note you may have to change the address
  // the most common are 0X3C and 0X3D

  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  // Shows the Adafruit logo for 2 seconds
  display.display();
  //delay(2000);
  display.clearDisplay();
  display.display();

}

void loop(void) {
  drawCube();
  display.display();
}

void drawCube() {
  display.drawRect(CUBE_Ax-5, CUBE_Ay-5, CUBE_Dx, CUBE_Dy, WHITE);
  display.drawRect(CUBE_Ax, CUBE_Ay, CUBE_Dx, CUBE_Dy, WHITE);
  display.drawLine(CUBE_Ax-5, CUBE_Ay-5, CUBE_Ax, CUBE_Ay, WHITE);
  display.drawLine(CUBE_Bx, CUBE_By+9, CUBE_Bx-5, CUBE_By, WHITE);
  display.drawLine(CUBE_Cx-5, CUBE_Cy-5, CUBE_Cx, CUBE_Cy, WHITE);
  display.drawLine(CUBE_Dx-5, CUBE_Dy-5, CUBE_Dx, CUBE_Dy, WHITE);
}