public function displayShowOff()
{
if ($this->drewBlank == 0) {
if ($this->drawContext->colorEnabled) {
$this->canvasBuffer = array_fill(0, 4 * $this->width * $this->height, 255);
} else {
$this->canvasBuffer = array_fill(0, 4 * $this->width * $this->height, false);
}
$this->drawContext->draw($this->canvasBuffer);
$this->drewBlank = 2;
}
}