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<?php
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<?php
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class CartoGroupage {
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class CartoGroupage {
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	private static $seuilClusterisation = 100;
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	private static $seuilClusterisation = 200;
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	private static $zoomDefaut = 3;
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	private static $zoomDefaut = 3;
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	private static $zoomMaxClustering = 12;
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	private static $zoomMaxClustering = 12;
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	private static $pasZoomDefaut = 1;
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	private static $pasZoomDefaut = 1;
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	private static $pasZoomMaxClustering = 0.05;
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	private static $pasZoomMaxClustering = 0.05;
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	  Quatres cadrans sont considérés par le quad tree
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	  Quatres cadrans sont considérés par le quad tree
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	  * = centre de la fenetre
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	  * = centre de la fenetre
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	 */
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	 */
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	public static function creerGroupesQuadtree(&$markers, $neLat, $neLng, $swLat, $swLng, $zoom = 3) {
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	public static function creerGroupesQuadtree(&$markers, $neLat, $neLng, $swLat, $swLng, $zoom = 3) {
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		if (count($markers) > self::$seuilClusterisation) {
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		if(count($markers) > self::$seuilClusterisation) {
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			self::calculerProfondeurMax($zoom);
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			self::calculerProfondeurMax($zoom);
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			self::calculerPasCorrectionCentre($zoom);
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			self::calculerPasCorrectionCentre($zoom);
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			$noeudRacine = array('nbrePoints' => count($markers), 'points' => $markers);
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			$noeudRacine = array('nbrePoints' => count($markers), 'points' => $markers);
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			self::attribuerAuCadran($noeudRacine, $neLat, $neLng, $swLat, $swLng);
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			self::attribuerAuCadran($noeudRacine, $neLat, $neLng, $swLat, $swLng);
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		} else {
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		} else {
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			foreach($markers as $marker) {
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			foreach($markers as $marker) {
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				$points = array($marker);
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				$points = array($marker);
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				$noeudSimple = array('points' => $points, 'nbrePoints' => 1);
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				$noeudSimple = array('points' => $points, 'nbrePoints' => 1);
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		return self::$coefficientProfondeurMax;
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		return self::$coefficientProfondeurMax;
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	}
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	}
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	private function calculerProfondeurMax($zoom) {
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	private function calculerProfondeurMax($zoom) {
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		if($zoom > self::$zoomDefaut) {
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		if($zoom > self::$zoomDefaut) {
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			//self::$profondeurMax = round(($zoom - self::$zoomDefaut) * self::calculerCoefficientProfondeurMax() + self::$profondeurMin,0);
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			self::$profondeurMax = $zoom-1;
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			self::$profondeurMax = round(($zoom - self::$zoomDefaut) * self::calculerCoefficientProfondeurMax() + self::$profondeurMin,0);
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		} else {
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		} else {
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			self::$profondeurMax = 1;
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			self::$profondeurMax = 1;
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		}
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		}
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	 * @param float $swLat Latitude du coin sud ouest de la fenetre
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	 * @param float $swLat Latitude du coin sud ouest de la fenetre
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	 * @param float $swLng Longitude du coin sud ouest de la fenetre
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	 * @param float $swLng Longitude du coin sud ouest de la fenetre
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	 * @param int $profondeur profondeur courante de l'arbre
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	 * @param int $profondeur profondeur courante de l'arbre
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	 */
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	 */
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	private static function attribuerAuCadran(&$noeud, $neLat, $neLng, $swLat, $swLng, $profondeur = 0) {
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	private static function attribuerAuCadran(&$noeud, $neLat, $neLng, $swLat, $swLng, $profondeur = 0) {
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		$latCentre = round((($neLat+$swLat)/2)/self::$pasCorrectionCentre,0)*self::$pasCorrectionCentre;
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		$latCentre = round((($neLat+$swLat)/2)/self::$pasCorrectionCentre,0)*self::$pasCorrectionCentre;
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		$lngCentre = round((($neLng+$swLng)/2)/self::$pasCorrectionCentre,0)*self::$pasCorrectionCentre;
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		$lngCentre = round((($neLng+$swLng)/2)/self::$pasCorrectionCentre,0)*self::$pasCorrectionCentre;
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		foreach ($noeud['points'] as &$point) {
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		foreach ($noeud['points'] as &$point) {
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				self::$nbElements['observations']++;
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				self::$nbElements['observations']++;
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				if (isset($point['type_emplacement'])) {
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				$emplacement = isset($point['type_emplacement']) ? $point['type_emplacement'] : self::obtenirTypeEmplacementParId(&$point);
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					self::$nbElements[$point['type_emplacement']]++;
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				}
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				self::$nbElements[$emplacement]++;
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				unset($point['type_emplacement']);
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				unset($point['type_emplacement']);
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				$cadran = self::obtenirCadranPourPoint($latCentre, $lngCentre, $point);
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				$cadran = self::obtenirCadranPourPoint($latCentre, $lngCentre, $point);
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				self::ajouterFils($noeud,$cadran,$point);
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				self::ajouterFils($noeud,$cadran,$point);
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		}
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		}
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		$profondeur++;
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		$profondeur++;
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		if ($profondeur <= self::$profondeurMax) {
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		if($profondeur <= self::$profondeurMax) {
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			(isset($noeud['A'])) ? self::attribuerAuCadran($noeud['A'], $neLat, $lngCentre , $latCentre, $swLng, $profondeur) : '';
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			(isset($noeud['A']) && $noeud['A'] != null) ? self::attribuerAuCadran($noeud['A'], $neLat, $lngCentre , $latCentre, $swLng, $profondeur) : '';
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			(isset($noeud['B'])) ? self::attribuerAuCadran($noeud['B'], $neLat, $neLng, $latCentre, $lngCentre, $profondeur) : '';
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			(isset($noeud['B']) && $noeud['B'] != null) ? self::attribuerAuCadran($noeud['B'], $neLat, $neLng, $latCentre, $lngCentre, $profondeur) : '';
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			(isset($noeud['C'])) ? self::attribuerAuCadran($noeud['C'], $latCentre, $neLng, $swLat, $lngCentre, $profondeur) : '';
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			(isset($noeud['C']) && $noeud['C'] != null) ? self::attribuerAuCadran($noeud['C'], $latCentre, $neLng, $swLat, $lngCentre, $profondeur) : '';
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			(isset($noeud['D'])) ? self::attribuerAuCadran($noeud['D'], $latCentre, $lngCentre, $swLat, $swLng, $profondeur) : '';
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			(isset($noeud['D']) && $noeud['D'] != null) ? self::attribuerAuCadran($noeud['D'], $latCentre, $lngCentre, $swLat, $swLng, $profondeur) : '';
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		}
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		}
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		if(self::estUnParentFeuilles($noeud)) {
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			self::$listeNoeudsSelectionnes[] = self::ajouterGroupeOuPoint($noeud);
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		}
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	}
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	private static function obtenirTypeEmplacementParId($point) {
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		$tableau_point_id = explode(':',$point['id'],2);
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		switch($tableau_point_id[0]) {
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			case 'STATION':
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				$type_emplacement = 'stations';
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			break;
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			case 'COMMUNE':
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				$type_emplacement = 'communes';
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		if(self::estUnParentFeuilles($noeud)) {
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			break;
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			self::$listeNoeudsSelectionnes[] = self::ajouterGroupeOuPoint($noeud);
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		}
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		}
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		return $type_emplacement;
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	}
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	}
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		}
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		}
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		return $cadran;
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		return $cadran;
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	}
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	}
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	private static function ajouterFils(&$noeud, $cadran, &$point) {
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		$fils = array('points' => array(), 'nbrePoints' => 0, 'latMoyenne' => 0, 'lngMoyenne' => 0);
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	private static function ajouterFils(&$noeud, $cadran, &$point) {
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		if (isset($noeud[$cadran])) {
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		if(!isset($noeud[$cadran])) {
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			$fils = $noeud[$cadran];
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			$noeud[$cadran] = array('points' => array(),'nbrePoints' => 0, 'latMoyenne' => 0, 'lngMoyenne' => 0);
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		}
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		}
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		$fils['points'][] = $point;
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		$noeud[$cadran]['points'][] = $point;
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		$fils['nbrePoints']++;
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		$noeud[$cadran]['nbrePoints']++;
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		$fils['latMoyenne'] += $point['lat'];
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		$noeud[$cadran]['latMoyenne'] += $point['lat'];
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		$fils['lngMoyenne'] += $point['lng'];
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		$noeud[$cadran] = $fils;
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		$noeud[$cadran]['lngMoyenne'] += $point['lng'];
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	}
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	}
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	private static function ajouterGroupeOuPoint(&$noeud) {
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	private static function ajouterGroupeOuPoint(&$noeud) {
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				self::estUneFeuille($noeud['C']) &&
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				self::estUneFeuille($noeud['C']) &&
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				self::estUneFeuille($noeud['D']);
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				self::estUneFeuille($noeud['D']);
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	}
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	}
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	private static function estUneFeuille(&$noeud) {
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		return $noeud == null ||
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	private static function estUneFeuille(&$noeud) {
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		(!isset($noeud['A']) || $noeud['A'] == null) &&
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		(!isset($noeud['B']) || $noeud['B'] == null) &&
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		(!isset($noeud['C']) || $noeud['C'] == null) &&
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		return $noeud == null || (!isset($noeud['A']) && !isset($noeud['B']) && !isset($noeud['C']) && !isset($noeud['D']));
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		(!isset($noeud['D']) || $noeud['D'] == null);
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	}
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	}
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}
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}
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?>
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?>