var width = window.innerWidth;
var height = $('body').height() - 3;
var halfWidth = width / 2;
var halfHeight = height / 2;

function drawerSketch(processing) {
  // set size
  processing.size(width, height);

  processing.setup = function() {
  processing.background(255);
  processing.fill(255, 0, 0);
  processing.stroke(0);
};

processing.mousePressed = function() {
  if (processing.mouseX < halfWidth) {
    processing.ellipse(processing.mouseX, processing.mouseY, 50, 50);
  } else {
    processing.rect(processing.mouseX, processing.mouseY, 50, 50);
  }
};

processing.keyPressed = function() {
  processing.background(0);
};

}
// attach the sketch function to the canvas
var processingInstance = new Processing(document.getElementById('sketch'), drawerSketch);