​

// Take a look at the HTML file where some things have been

// added for mobile viewing

​

function setup() {

  // Make the canvas the size of the mobile device screen

  createCanvas(windowWidth, windowHeight);

  background(200);

}

​

function touchMoved() {

  strokeWeight(10);

  stroke(0);

  // Here touchX and touchY act like mouseX and mouseY

  // line(touchX, touchY, ptouchX, ptouchY);

  line(mouseX, mouseY, pmouseX, pmouseY);

​

  // This prevents dragging screen around

  return false;

}