Subversion Repositories eFlore/Applications.moissonnage

<?php

class Maillage {

	private $bbox = array();

	private $zoom = '';

	private $source = '';

	private $indexLongitude = array();

	private $indexLatitude  = array();

	private $mailles = array();

	private $bdd = null;

	public function __construct($bbox, $zoom, $source) {

		$this->bbox   = $this->calculerLimiteBboxGlobale($bbox);

		$this->zoom   = $zoom;

		$this->source = $source;

		$this->indexLongitude = array();

		$this->indexLatitude  = array();

		$this->mailles = array();

	}

	private function calculerLimiteBboxGlobale($bbox) {

		$bboxGlobale = $bbox[0];

		for ($index = 1; $index < count($bbox); $index ++) {

			if ($bbox[$index]['ouest'] < $bboxGlobale['ouest']) {

				$bboxGlobale['ouest'] = $bbox[$index]['ouest'];

			}

			if ($bbox[$index]['sud'] < $bboxGlobale['sud']) {

				$bboxGlobale['sud'] = $bbox[$index]['sud'];

			}

			if ($bbox[$index]['est'] > $bboxGlobale['est']) {

				$bboxGlobale['est'] = $bbox[$index]['est'];

			}

			if ($bbox[$index]['nord'] > $bboxGlobale['nord']) {

				$bboxGlobale['nord'] = $bbox[$index]['nord'];

			}

		}

		return $bboxGlobale;

	}

	public function genererMaillesVides() {

		$this->recupererIndexMaillesDansBbox();

		foreach ($this->indexLatitude as $indexLat => $intervalleLat) {

			$ligne = array();

			foreach ($this->indexLongitude as $indexLng => $intervalleLng) {

				$ligne[] = new Maille($intervalleLat[0], $intervalleLng[0], $intervalleLat[1],

						$intervalleLng[1], $indexLat, $indexLng);

			}

			$this->mailles[] = $ligne;

		}

	}

	private function recupererIndexMaillesDansBbox() {

		$conditionsLongitude = "";

		if ($this->bbox['ouest'] >  $this->bbox['est']) {

			$conditionsLongitude = "NOT(debut>=".$this->bbox['ouest']." AND fin<=".$this->bbox['est'].")";

		} else {

			$conditionsLongitude = "fin>=".$this->bbox['ouest']." AND debut <=".$this->bbox['est'];

		}

		$requete =

			"SELECT axe, position, debut, fin FROM mailles_index WHERE zoom=".$this->zoom." ".

			"AND (".

				"(axe='lat' AND fin>=".$this->bbox['sud']." AND debut<=".$this->bbox['nord'].") ".

				"OR (axe='lng' AND {$conditionsLongitude})".

			") ORDER BY axe, position";

		$indexMailles = $this->getBdd()->recupererTous($requete);

		foreach ($indexMailles as $index) {

			if ($index['axe'] == 'lng') {

				$this->indexLongitude[$index['position']] = array($index['debut'], $index['fin']);

			} else {

				$this->indexLatitude[$index['position']]  = array($index['debut'], $index['fin']);

			}

		}

	}

	private function getBdd() {

		if (is_null($this->bdd)) {

			$this->bdd = new Bdd();

		}

		$nomBdd = Config::get('bdd_nom_eflore');

		$this->bdd->requeter("USE ".$nomBdd);

		return $this->bdd;

	}

	public function ajouterStations(& $stations) {

		foreach ($stations as $station) {

			$longitude = $station['longitude'];

			$latitude = $station['latitude'];

			list($indexLongitude, $indexLatitude) = $this->rechercherIndexMaille($longitude, $latitude);

			$this->mailles[$indexLatitude][$indexLongitude]->ajouterStation($station, $this->source);

		}

	}

	public function ajouterMailles(& $mailles) {

		foreach ($mailles as $maille) {

			$longitude = ($maille['ouest'] + $maille['est'])  / 2;

			$latitude  = ($maille['sud']   + $maille['nord']) / 2;

			list($indexLongitude, $indexLatitude) = $this->rechercherIndexMaille($longitude, $latitude);

			$this->mailles[$indexLatitude][$indexLongitude]->combinerMailles($maille, $this->source);

		}

	}

	private function rechercherIndexMaille($longitude, $latitude) {

		$indexLatitude = 0;

		$indexLongitude = 0;

		while ($indexLatitude < count($this->indexLatitude) - 1

			&& $this->mailles[$indexLatitude][0]->getLatitudeNord() < $latitude) {

			$indexLatitude ++;

		}

		while ($indexLongitude < count($this->indexLongitude) - 1

			&& $this->mailles[$indexLatitude][$indexLongitude]->getLongitudeEst() < $longitude) {

				$indexLongitude ++;

		}

		return array($indexLongitude, $indexLatitude);

	}

	public function formaterSortie() {

		$mailles_resume = array();

		foreach ($this->mailles as $ligne) {

			foreach ($ligne as $maille) {

				$nombreStations = $maille->getNombrestations();

				if ($nombreStations > 0) {

					$mailles_resume[] = array(

						'type_site' => 'MAILLE',

						'sud'       => $maille->getLatitudeSud(),

						'ouest'     => $maille->getLongitudeOuest(),

						'nord'      => $maille->getLatitudeNord(),

						'est'       => $maille->getLongitudeEst(),

						'stations'     => $maille->getStations(),

						'observations' => $maille->getObservations()

					);

				}

			}

		}

		if (count($mailles_resume) == 0 || count($mailles_resume[0]) == 0)

			return array();

		return $mailles_resume;

	}

}

?>