lab8 processing

//import serial library
import processing.serial.*;

//create sensor values
int sensorVal1;
int sensorVal2;
int sensorVal3;

//create and instance of the serial libaray
Serial myPort;

//create an instance of a font
PFont f;

void setup() { 
  //set up the size fo the screen
  size(570, 500);
  
  //my port is:  /dev/tty.usbmodem1411
  String portName = "/dev/tty.usbmodem1411"; 
  myPort = new Serial(this, portName, 9600);
  
  //create a font of size 16 Helvetica
  f = createFont("Helvetica", 16, true);
} 

void draw() { 
  // create a background that changed color based on the input from 3 potentiometers
  background(sensorVal1, sensorVal2, sensorVal3);
  
  // create strings to hold the values of each potentiometer
  String message1 = "Red: " + sensorVal1;
  String message2 = "Green: " + sensorVal2;
  String message3 = "Blue: " + sensorVal3;
  
  textFont(f,36);
  
  // change the color of the display text based on the amount of red and green in the background color
  if (sensorVal1>150 || sensorVal2>150) {
    fill(0);
  } else { 
    fill(255);
  }
  
  // display the text
  text(message1,10,35);
  text(message2,190,35);
  text(message3,410,35);
}

//listening for serial events
void serialEvent(Serial myPort) {
  String input = myPort.readStringUntil('\n');
  
  if (input != null) {
    input = trim(input); 
    int[] sensors = int(split(input, ','));
    println(sensors); 
    
    // if the length of the sensors array is longer than 2
    if (sensors.length > 2) {
      //set each variable to its given value from the potentiometer 
      sensorVal1 = sensors[0]; 
      sensorVal2 = sensors[1];
      sensorVal3 = sensors[2];
    }
  }
  
  myPort.write('x');
}