public function canLoadObserver($event)
{
if (!($current_tuple = $event->getPointSequence())) {
throw new Exception('Event ' . $event->getName() . 'does not have "point_sequence" param!');
}
if (!($candidate = $event->getPoint())) {
throw new Exception('Event ' . $event->getName() . 'does not have "point_sequence" param!');
}
$pointSequence = array_merge(Helper::getPointSequenceFromTuple($current_tuple), [$candidate]);
$checkLoading = $this->getPrecise() == 100 ? false : rand(0, 100) < $this->getData('check_transitional_loading_probability') && $this->_lastPointIsPickup($pointSequence);
// if needed, check 3D constraints
$event->getResultContainer()->result = $checkLoading ? $this->canLoad($pointSequence) : true;
}
protected function _generateNestedPointSequences($node)
{
$pointSequence = $node->getContent()->getPoints();
$generator = new Generator(['tuple_length' => Point::getPointCount($this->getPoints()), 'generating_elements' => Helper::getGeneratorDataFromPoints($this->getPoints()), 'current_path' => $node->getContent(), 'weight_capacity' => $this->getWeightCapacity(), 'load_area' => $this->getLoadArea()]);
// $generator->validate();
$points = Helper::getGeneratorDataFromPoints($pointSequence);
$result = Helper::getPointSequencesFromGeneratorData($generator->generateNextObjects($points));
if ($result) {
// hack: if all PDP points except of depot are present, add depot
$nodeHasAllPointsExceptOfDepot = Helper::pointSequenceIncludesAllPickupsAndDeliveries(reset($result), $this->getPoints());
if ($nodeHasAllPointsExceptOfDepot) {
foreach ($result as &$resultPointSequence) {
$resultPointSequence = array_merge($resultPointSequence, [$this->getDepot()]);
}
}
}
return $result;
}
protected function _getSuccessiveElements($tuple)
{
$result = [];
// we assume that tuple contain \Litvinenko\Combinatorics\Pdp\Point objects
$currentPath = $this->_getCurrentPath($tuple);
foreach ($this->getGeneratingElements() as $element) {
$point = $element['value'];
// if current path does not contain this point
if (!$currentPath->doesContain($point)) {
// add pickup point if whether vehicle can take box at this point
if ($point->isPickup() && $currentPath->getCurrentWeight() + $point->getBoxWeight() <= $this->getWeightCapacity() && $currentPath->getCurrentVolume() + $point->getBoxVolume() <= Helper::getLoadAreaVolume($this->getLoadArea()) || $point->isDelivery() && $currentPath->doesContain($point->getPairId())) {
$resultContainer = new \stdClass();
// event observers will write info to this object
App::dispatchEvent('point_add_before', ['point' => $point, 'point_sequence' => $tuple, 'result_container' => $resultContainer]);
if (!isset($resultContainer->result) || isset($resultContainer->result) && $resultContainer->result !== false) {
$result[] = $element;
}
}
}
}
return $result;
}
