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

int sensors[2];
int inByte;

int _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);
  if (duration > 0) {
    distance = duration / 2 * 340 * 500 / 1000000;
  }
  return distance;
}

void setup(){
  Serial.begin(9600);
  //pinMode(A5, INPUT);
  pinMode(A1, INPUT);
  digitalWrite(18, LOW);
  
  sensors[0] = 0;
  sensors[1] = 0;
  inByte = 0;
  establishContact();
}
 
void loop(){
  if (Serial.available() > 0) {
    inByte = Serial.read();
    //sensors[0] = analogRead(A5);
    sensors[0] = _sbeGetDistanceUsingDistanceSensor(18 , 19);
    sensors[1] = analogRead(A1);
    Serial.print(sensors[0]);
    Serial.print(",");
    Serial.println(sensors[1]);          
  }
}
 
void establishContact() {
  while (Serial.available() <= 0) {
    Serial.println("通信中"); 
    delay(300);
  }
}

import processing.serial.*;
Serial myPort; 

PImage img;
float fillColor;
float diameter;
float x = 460;
float y = 460;
int spin = 0;
float rad;
 
void setup() {
  size(940, 980);
  myPort = new Serial(this, Serial.list()[4], 9600);
  myPort.bufferUntil('\n');
  img = loadImage("musashi_face.png");
}
 
void draw() {
  background(255);
  imageMode(CENTER);
  translate(x, y);
  image(img, 0, 0, diameter, diameter);
}
 
void serialEvent(Serial myPort) { 
  String myString = myPort.readStringUntil('\n');
  myString = trim(myString);
  int sensors[] = int(split(myString, ','));
  if (sensors.length > 1) {;
    if (sensors[0] < 50){
      diameter = 900;
      delay(3000); 
      diameter = 0;
    }
  }
  myPort.write("A");
}