/**
* @param Polygon $polygon
* @param int $i
*
* @return bool
*/
private function isOptimal(Polygon $polygon, $i)
{
return $polygon->getInnerPolygon(0)->getPoints()[self::prevIndex($i, $polygon->nVertices())]->getY() != $polygon->getInnerPolygon(0)->getPoints()[$i]->getY() || $polygon->getInnerPolygon(0)->getPoints()[self::nextIndex($i, $polygon->nVertices())]->getY() != $polygon->getInnerPolygon(0)->getPoints()[$i]->getY();
}
