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86 lines
2.8 KiB
86 lines
2.8 KiB
<?php
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namespace OSM\Element;
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use OSM\Element\Element;
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use OSM\Element\Member\Way;
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use OSM\Point;
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class Relation extends Element {
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public function getOuterWays(): array {
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return array_filter($this->members, function ($member) {
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return (
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($member instanceof \OSM\Element\Member\Way)
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and ($member->role === 'outer')
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);
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});
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}
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public function getOuterWaysStartingWith(Point $point, ?Way $exclude = null): array {
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return array_filter($this->members, function ($member) use ($point, $exclude) {
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return (
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($member instanceof \OSM\Element\Member\Way)
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and ($member->role === 'outer')
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and ($point->isSame($member->getFirstPoint()))
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and (
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is_null($exclude)
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or !$member->isSame($exclude)
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)
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);
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});
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}
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public function getOuterWaysStopingWith(Point $point, ?Way $exclude = null): array {
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return array_filter($this->members, function ($member) use ($point, $exclude) {
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return (
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($member instanceof \OSM\Element\Member\Way)
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and ($member->role === 'outer')
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and ($point->isSame($member->getLastPoint()))
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and (
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is_null($exclude)
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or !$member->isSame($exclude)
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)
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);
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});
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}
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public function getOrderedOuterWays(): array {
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$orderedWays = [];
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$ways = $this->getOuterWays();
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$currentWay = reset($ways);
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$veryFirstPoint = $currentWay->getFirstPoint();
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$isDone = false;
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while (!$isDone) {
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$orderedWays[] = $currentWay;
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$nextWays = $this->getOuterWaysStartingWith($currentWay->getLastPoint(), $currentWay);
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assert(count($nextWays) <= 1);
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if (count($nextWays) === 1) {
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$nextWay = reset($nextWays);
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if ($veryFirstPoint->isSame($nextWay->getFirstPoint())) {
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break;
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}
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$currentWay = $nextWay;
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continue;
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} else {
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$nextWays = $this->getOuterWaysStopingWith($currentWay->getLastPoint(), $currentWay);
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assert(count($nextWays) <= 1);
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if (count($nextWays) === 1) {
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$nextWay = reset($nextWays);
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$nextWay->reversePoints();
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if ($veryFirstPoint->isSame($nextWay->getFirstPoint())) {
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break;
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}
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$currentWay = $nextWay;
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continue;
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} else {
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$isDone = true;
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}
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}
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}
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return $orderedWays;
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}
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}
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