/**
* Overload to return the firection of the pie centre
*/
public function DataLabelTailDirection($dataset, $index, $hpos, $vpos)
{
if (isset($this->slice_info[$index])) {
$a = rad2deg($this->slice_info[$index]->MidAngle());
// tail direction is opposite slice direction
if ($this->reverse) {
return (900 - $this->start_angle - $a) % 360;
} else {
return (180 + $this->start_angle + $a) % 360;
}
}
// fall back to default
return parent::DataLabelTailDirection($dataset, $index, $hpos, $vpos);
}
