week15,hw12

1.void setup() {
  size(400, 200);
  background(255);
  noStroke();
  fill(102);
}
void draw() {
  fill(255, 255, 255);
  stroke(0, 0, 0);
  strokeWeight(2);
  rect(20, 20, 72, 160);
  rect(92, 20, 72, 160);
  rect(164, 20, 72, 160);
  rect(236, 20, 72, 160);
  rect(308, 20, 72, 160);
  fill(0);
  rect(74, 20, 36, 80);
  rect(146, 20, 36, 80);
  rect(290, 20, 36, 80);
  rect(362, 20, 18, 80);
 
}



畫出一個鋼琴鍵盤，之後再跟arduino結合，按出一個音，鋼琴鍵盤就會變紅色。