import processing.serial.*;

// The serial port:
Serial myPort;
PImage shadowImage;

void setup() {
  size(500, 500);
  // List all the available serial ports:
  shadowImage = loadImage("cmavros.jpg");

  print("Serial port is ");
  println(Serial.list());

  /*  I know that the first port in the serial list on my mac
   is always my  Keyspan adaptor, so I open Serial.list()[0].
   Open whatever port is the one you're using.
   */
  myPort = new Serial(this, Serial.list()[0], 9600);
  println(myPort);
}


void draw() {
  image(shadowImage, 0, 0);
  while (myPort.available () > 0) {
    int inByte = myPort.read();
    if (inByte>4) {
      println(inByte);
      tint(300-inByte,0,inByte+100);
      image(shadowImage, 0, 0);
    }
  }
}