eyes_sleepy

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

// 0x1306.dev · animation: eyes_sleepy · robot_eyes · 125ms
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

void drawEyes(int lx, int ly, int lw, int lh, int lr,
              int rx, int ry, int rw, int rh, int rr) {
  display.fillRoundRect(lx - lw/2, ly - lh/2, lw, lh, lr, WHITE);
  display.fillRoundRect(rx - rw/2, ry - rh/2, rw, rh, rr, WHITE);
}

void drawFrame(int frame) {
  display.clearDisplay();
    int heights[] = {28, 22, 14, 8, 14, 22};
    int h = heights[frame % 6];
    drawEyes(32, 32 + (28-h)/2, 38, h, 4, 96, 32 + (28-h)/2, 38, h, 4);
    display.fillRect(32-19, 32-14, 38, 10, BLACK);
    display.fillRect(96-19, 32-14, 38, 10, BLACK);
  display.display();
}

void setup() {
  Wire.begin(21, 22);
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
}

void loop() {
  for (int i = 0; i < 6; i++) {
    drawFrame(i);
    delay(125);
  }
}