/**
* Returns the height of the offset attribute for a rotated element.
* Using this height, we'll construct a div before and after the rotated element
* @param IdmlElement $element
* @return string
*/
public static function getOffsetHeight(IdmlElement $element)
{
$containingBoundary = new IdmlBoundary($element->boundary->top, $element->boundary->left, $element->boundary->bottom, $element->boundary->right);
$containingBoundary->rotate($element->transformation->getB());
$elementHeight = $element->boundary->getHeight();
$containerHeight = $containingBoundary->getHeight();
$offsetHeight = ($containerHeight - $elementHeight) / 2;
if ($offsetHeight < 0) {
$offsetHeight = 0;
}
return $offsetHeight;
}
