| public getLightness ( boolean $value = false ) : float | ||
| $value | boolean | |
| Résultat | float | the lightness of this colour. |
public function getLightness($value = false)
{
if ($this->lightness === null) {
$this->rgb2hsl();
}
if ($value && isset($this->lightness->value)) {
return $this->lightness->value;
}
return $this->lightness;
}