// Learning Processing
// Daniel Shiffman
// http://www.learningprocessing.com

// Example 5-3: Rollovers
void setup() {
  size(200,200);
}

void draw() {
  background(255);
  stroke(0);
  line(100,0,100,200);
  line(0,100,200,100);
  
  // Fill a black color
  noStroke();
  fill(0);

  // Depending on the mouse location, a different rectangle is displayed.    
  if (mouseX < 100 && mouseY < 100) {
    rect(0,0,100,100);
  } else if (mouseX > 100 && mouseY < 100) {
    rect(100,0,100,100);
  } else if (mouseX < 100 && mouseY > 100) {
    rect(0,100,100,100);
  } else if (mouseX > 100 && mouseY > 100) {
    rect(100,100,100,100);
  }
}