class Cursor
{
  Position p = new Position();
  Position s = new Position();
  color c = shapeColor;
  boolean kill = false, down = false;
  
  int fade = 0, fadeSteps = 10;
  
  Cursor() {}
  
  void be()
  {
    if (down && !kill) {
      resize();
      draw();
    } else if (down && kill) {
      fade();
    }
  }
  
  void draw()
  {
    noStroke();
    fill(c);
    rectMode(CORNERS);
    rect(p.x, p.y, s.x, s.y);
  }
  
  void set(float x, float y)
  {
    down = true;
    p.set(x,y);
  }
  
  void resize()
  {
    if (mousePressed) {
      s.set(mouseX, mouseY);
    }
  }
  
  void kill()
  {
    kill = true;
  }
  
  void fade()
  {
    float alfa = 255 - ((float)fade/(float)fadeSteps*255);
    c = color(red(c), green(c), blue(c), alfa);
    noStroke();
    fill(c);
    rectMode(CENTER);
    rect((s.x + p.x)/2, (s.y + p.y)/2, (s.x - p.x) - (s.x - p.x)*((float)fade/(float)fadeSteps), (s.y - p.y) - (s.y - p.y)*((float)fade/(float)fadeSteps));
    
    fade++;
    if (fade > fadeSteps) {
      fade = 0;
      c = shapeColor;
      kill = false;
      down = false;
    }
  }
}

void cursor_controller()
{
  if (!mousePressed && numSelected < 2 && myCursor.down) {
    myCursor.kill();
  }
  myCursor.be();
}