void setup()
{
 size(300, 300);
 textFont(createFont("Arial", 15));
}
void draw()
{
 // Exibe os pontos
 stroke(128);
 fill(frameCount % 256);
 rect((frameCount % (width/10)) * 10,
      (frameCount / (width/10)) * 10, 10, 10);
 
 // Exibe os dados
 fill(255);
 rect(0, width-100, width, 100);
 fill(0);
 text("(frameCount % (width /10)) * 10 = " + 
       (frameCount % (width /10)) * 10 , 0, height - 80);
 text("(frameCount / (width /10)) * 10 = " + 
       (frameCount / (width /10)) * 10, 0, height - 60);
 text("frameCount % width = " + (frameCount % width), 0, height - 40);
 text("frameCount / width = " + (frameCount / width), 0, height - 20);
}