Closest difference to (can be used for angles)

gistfile1.txt

// Taken (with some modifications) from http://actionsnippet.com/?p=1451
private function difference(angle1:Number, angle2:Number, max:Number = 360):Number
{
	const m:Number = max / 2;
	var v:Number = ((angle1 - angle2 + m) % max);
	return (v > 0) ? (v - m) : (v + m);
}

private function getClosestTime(hoursProgress:Number, index:int):int
{
	var d1:int = Math.abs(difference(hoursProgress * 12, index, 24));
	var d2:int = Math.abs(difference(hoursProgress * 12, index + 12, 24));
	if (d1 < d2)
	{
		// From midnight (24:00) to noon (12:00)
		return (index == 0) ? 24 : index;
	}
	else
	{
		// From noon (12:00) to midnight (24:00)
		return index + 12;
	}
}