/**
* Sets the anchor of the marker image
*
* Available prototypes:
* - function setAnchor(Ivory\GoogleMap\Base\Point $anchor = null)
* - function setAnchor(double x, double y)
*
* @throws \Ivory\GoogleMap\Exception\OverlayException If the anchor is not valid (prototypes).
*/
public function setAnchor()
{
$args = func_get_args();
if ($args[0] instanceof Point) {
$this->anchor = $args[0];
} elseif (isset($args[0]) && is_numeric($args[0]) && (isset($args[1]) && is_numeric($args[1]))) {
if ($this->anchor === null) {
$this->anchor = new Point();
}
$this->anchor->setX($args[0]);
$this->anchor->setY($args[1]);
} elseif (!isset($args[0])) {
$this->anchor = null;
} else {
throw OverlayException::invalidMarkerImageAnchor();
}
}