/**
* @param $nodeGettingSwitched
* @param $nodeToSwitch
* @return array
*/
private function isNodeFeasibleToSwitch(RideNode $nodeGettingSwitched, RideNode $nodeToSwitch)
{
$left = $nodeGettingSwitched->previousNode;
$right = $nodeGettingSwitched->nextNode;
//if previous or next node is null - then we set feas to possible
if ($left !== null) {
$feasibleLeft = $this->adjacenceMatrix[$left->getRideNodeHashId()][$nodeToSwitch->getRideNodeHashId()];
} else {
$feasibleLeft = 0;
}
if ($right !== null) {
$feasibleRight = $this->adjacenceMatrix[$nodeToSwitch->getRideNodeHashId()][$right->getRideNodeHashId()];
} else {
$feasibleRight = 0;
}
if ($feasibleLeft !== -1 && $feasibleRight !== -1) {
return true;
}
return false;
}
