/**
* Calculate time between two points.
*
* @param IPoint $point1 Starting point.
* @param IPoint $point2 Ending point.
*
* @return Integer Difference between given points in seconds.
*/
private function calc_time(\IPoint $point1, \IPoint $point2)
{
$date1 = $point1->getTime();
$date2 = $point2->getTime();
return $date1->getTimestamp() - $date2->getTimestamp();
}
