Processing-Arduino 1: Mouse to LED

import processing.serial.*;

Serial port; //create object from "serial" class

void setup() {

size(200, 200);

noStroke();

frameRate(10);

//open the port that the board is connected to and use the same speed (9600bps)

port = new Serial(this, Serial.list()[0], 9600);

}

void draw() {

background(255);

if (mouseOverRect() == true) {

fill(204);

port.write("H");

} else {

fill(0);

port.write("L");

}

rect(50, 50, 100, 100);

}

boolean mouseOverRect() {

return((mouseX >= 50) && (mouseX <= 150) && (mouseY >=50) && (mouseY <= 150));

}