/**
* Create a new background image var from the old background image var.
*/
public function createNewVarFromBackgroundImage()
{
$virginImage = ImageWorkshopLib::generateImage($this->getWidth(), $this->getHeight());
// New background image
ImageWorkshopLib::mergeTwoImages($virginImage, $this->image, 0, 0, 0, 0);
unset($this->image);
$this->image = $virginImage;
unset($virginImage);
$layers = $this->layers;
foreach ($layers as $layerId => $layer) {
$this->layers[$layerId] = clone $this->layers[$layerId];
}
}
