/**
* How far to separate the slice from the rest of the pie.
* from 0.0 (not at all) to 1.0 (the pie's radius).
*
* @param float offset
* @return \slice
*/
public function offset($offset)
{
if (is_float($offset) && Helpers::between($offset, 0.0, 1.0)) {
$this->offset = $offset;
} else {
$this->type_error(__FUNCTION__, 'float', 'where 0.0 < $offset < 0.1');
}
return $this;
}
/**
* Sets the angle of the axis text, if it's drawn slanted. Ignored if
* axis.slantedText is false, or is in auto mode, and the chart decided to
* draw the text horizontally.
*
* This option is only supported for a discrete axis.
*
* @param int Angle of labels
* @return \hAxis
*/
public function slantedTextAngle($angle)
{
if (is_int($angle) && Helpers::between($angle, 1, 90)) {
$this->slantedTextAngle = $angle;
} else {
$this->type_error(__FUNCTION__, 'int', 'between 1 - 90');
}
return $this;
}