void setup()
{
  size (200, 200);
  background (0);
  stroke (200);
}


void draw()
{
if (mouseX<132)
{
  if (mouseY<132)
  {
    line (0, 0, mouseX, mouseY);
  }
  else
  {
    line (0, 200, mouseX, mouseY);
  }
}
else
{
  if (mouseY<132)
  {
    line (200, 0, mouseX, mouseY);
  }
  else
  {
    line (200, 200, mouseX, mouseY);
  }
}
}