Mouse Drawing advanced pt.2

var pointX;

var pointY;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  background(54, 136, 201);

  stroke(156, 48, 156);

  strokeWeight(10);

}

​

function draw() {

  blendMode(SCREEN);

  if(mouseIsPressed) {

  line(mouseX, mouseY, pointX, pointY);

  }

}

​

//on mouse press I save the coordinated 

//in global variables

function mousePressed() {

  pointX = mouseX;

  pointY = mouseY;

}