Processing × スクーミー ⑦～距離センサーに近づいたら画像を表示～【Python】

unsigned long distanceTimeOut = 100000;
float _sbeGetDistanceUsingDistanceSensor(int trigPin, int echoPin) {
  long distance = 0;
  long duration = 0;

  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);

  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  duration = pulseIn(echoPin, HIGH, distanceTimeOut);
  if (duration > 0) {
    distance = duration / 2 * 340 * 100 / 1000000;
  }
  return distance;
}

void setup() {
  Serial.begin(9600);
  digitalWrite(18, LOW);
}

void loop() {
  int analogValue = int(_sbeGetDistanceUsingDistanceSensor(18 , 19));
  
  byte analog_highByte = (analogValue >> 8) & 0xFF;
  byte analog_lowByte = analogValue & 0xFF;

  Serial.write(analog_highByte);
  Serial.write(analog_lowByte);
}

add_library('serial')

myPort = None
available_serialport = 2
arduinoPort = Serial.list()[available_serialport]
x = 460
y = 460
sensingValue = 0
diameter = 0
distance = 50

def setup():
    global myPort, img
    size(940, 980)
    myPort = Serial(this, arduinoPort, 9600)
    img = loadImage("musashi_face.png")
    

def draw():
    background(255)
    imageMode(CENTER)
    translate(x, y)
    image(img, 0, 0, diameter, diameter)

def serialEvent(myPort):
    global sensingValue, diameter
    if myPort.available() >= 2:
        analog_highByte = myPort.read()
        analog_lowByte = myPort.read()
        
        sensingValue = (analog_highByte << 8) | analog_lowByte
        println(sensingValue)
        
        if sensingValue <= distance:
            diameter = 900
            delay(3000)
            diameter = 0