/**
* Sets the parent. The parent chain should ultimately be a GraPHP object
*
* @see Image_Graph
* @param Image_Graph_Common $parent The parent
* @access private
*/
function _setParent(&$parent)
{
parent::_setParent($parent);
$this->_setCoords($this->_parent->_left, $this->_parent->_top, $this->_parent->_right, $this->_parent->_bottom);
}
