/**
* Returns the grid points as an array of GridPoints
*/
public function GetGridPoints($min_space, $start)
{
$points = parent::GetGridPoints($min_space, $start);
$new_points = array();
$z = $this->Zero();
foreach ($points as $p) {
$new_points[] = new GridPoint($p->position + $z, $p->text, $p->value);
if ($p->value != 0) {
$new_points[] = new GridPoint(2 * $start + $z - $p->position, $p->text, $p->value);
}
}
usort($new_points, $this->direction < 0 ? 'gridpoint_rsort' : 'gridpoint_sort');
return $new_points;
}