exercise 6 processing

import processing.serial.*;
Serial myPort;
String sensorReading="";

void setup() {
  size(400, 400);
  myPort = new Serial(this, Serial.list()[2], 9600);
  myPort.bufferUntil('\n');

}

void draw() {
  background(255);
  fill(0);
  text("Sensor Reading: " + sensorReading, 20, 20);
  rect(width/2, height/2, float(sensorReading), float(sensorReading));

}

void serialEvent (Serial myPort) {
  sensorReading = myPort.readStringUntil('\n');

}