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977 jpm 1 
<?php
2 
class CartoGroupage {
1142 aurelien 3 
	const MARQUEUR_GROUPE = 'GROUPE';
4 
	const MARQUEUR_COMMUNE = 'COMMUNE';
5 
	const MARQUEUR_STATION = 'STATION';
1585 jpm 6 
 
1032 aurelien 7 
	private static $seuilClusterisation = 200;
978 jpm 8 
	private static $zoomDefaut = 3;
9 
	private static $zoomMaxClustering = 12;
10 
	private static $pasZoomDefaut = 1;
11 
	private static $pasZoomMaxClustering = 0.05;
12 
	private static $profondeurMin = 0;
13 
	private static $profondeurMax = 8;
1585 jpm 14 
 
978 jpm 15 
	private static $pasCorrectionCentre = null;
1585 jpm 16 
	private static $coefficientReductionPas = null;
978 jpm 17 
	private static $coefficientProfondeurMax = null;
1585 jpm 18 
 
1172 aurelien 19 
	private static $nbElements = array('stations' => 0,'communes' => 0, 'points' => 0);
1585 jpm 20 
	private static $listeNoeudsSelectionnes = array();
1106 aurelien 21 
	private static $bornesMax = array('latMin' => null, 'lngMin' => null, 'latMax' => null, 'lngMax' => null);
1142 aurelien 22 
	private static $id_traites = array();
978 jpm 23 
	/*
24 
	  +---------+---------+
25 
	  |         |         |
26 
	  |    A    |    B    |
27 
	  |         |         |
28 
	  +---------*---------+
29 
	  |         |         |
30 
	  |    D    |    C    |
31 
	  |         |         |
32 
	  +---------+---------+
1585 jpm 33 
 
978 jpm 34 
	  Quatres cadrans sont considérés par le quad tree
1585 jpm 35 
	  * = centre de la fenetre
978 jpm 36 
	 */
979 jpm 37 
	public static function creerGroupesQuadtree(&$markers, $neLat, $neLng, $swLat, $swLng, $zoom = 3) {
1585 jpm 38 
		if (count($markers) > self::$seuilClusterisation) {
39 
 
978 jpm 40 
			self::calculerProfondeurMax($zoom);
41 
			self::calculerPasCorrectionCentre($zoom);
42 
 
43 
			$noeudRacine = array('nbrePoints' => count($markers), 'points' => $markers);
1585 jpm 44 
			self::attribuerAuCadran($noeudRacine, $neLat, $neLng, $swLat, $swLng);
45 
 
1004 jpm 46 
		} else {
1585 jpm 47 
			foreach($markers as &$marker) {
1142 aurelien 48 
				if(!self::estUnPointAExclure($marker)) {
1585 jpm 49 
					$emplacement = self::formaterPointPourAjout($marker);
50 
					self::mettreAJourBornes($marker);
1142 aurelien 51 
					$points = array($marker);
52 
					$noeudSimple = array('points' => $points, 'nbrePoints' => 1);
53 
					self::$nbElements[$emplacement]++;
54 
					self::$listeNoeudsSelectionnes[] = self::ajouterGroupeOuPoint($noeudSimple);
55 
				}
1172 aurelien 56 
				self::$nbElements['points']++;
977 jpm 57 
			}
978 jpm 58 
		}
59 
		return self::$listeNoeudsSelectionnes;
60 
	}
1585 jpm 61 
 
978 jpm 62 
	private function calculerCoefficientReductionPas() {
63 
		if(self::$coefficientReductionPas == null) {
64 
			self::$coefficientReductionPas = (self::$pasZoomMaxClustering - self::$pasZoomDefaut)/(self::$zoomMaxClustering - self::$zoomDefaut);
977 jpm 65 
		}
1585 jpm 66 
 
978 jpm 67 
		return self::$coefficientReductionPas;
977 jpm 68 
	}
1585 jpm 69 
 
978 jpm 70 
	private function calculerPasCorrectionCentre($zoom) {
71 
		self::$pasCorrectionCentre = ($zoom - self::$zoomDefaut) * self::calculerCoefficientReductionPas() + self::$pasZoomDefaut;
977 jpm 72 
	}
1585 jpm 73 
 
978 jpm 74 
	private function calculerCoefficientProfondeurMax() {
75 
		if(self::$coefficientProfondeurMax == null) {
76 
			self::$coefficientProfondeurMax = (self::$profondeurMax - self::$profondeurMin)/(self::$zoomMaxClustering - self::$zoomDefaut);
977 jpm 77 
		}
1585 jpm 78 
 
978 jpm 79 
		return self::$coefficientProfondeurMax;
977 jpm 80 
	}
1585 jpm 81 
 
82 
	private function calculerProfondeurMax($zoom) {
83 
		if($zoom > self::$zoomDefaut) {
1032 aurelien 84 
			self::$profondeurMax = round(($zoom - self::$zoomDefaut) * self::calculerCoefficientProfondeurMax() + self::$profondeurMin,0);
977 jpm 85 
		} else {
978 jpm 86 
			self::$profondeurMax = 1;
977 jpm 87 
		}
88 
	}
1585 jpm 89 
 
979 jpm 90 
	public static function getNbElements() {
91 
		return self::$nbElements;
92 
	}
1585 jpm 93 
 
1106 aurelien 94 
	public static function mettreAJourBornes(&$point) {
1585 jpm 95 
		if (!is_numeric($point['lat']) || abs($point['lat']) > 90) return;
96 
		if (!is_numeric($point['lng']) || abs($point['lng']) > 180) return;
97 
 
1142 aurelien 98 
		self::$bornesMax['latMin'] = ($point['lat'] < self::$bornesMax['latMin'] || self::$bornesMax['latMin'] == null) ? $point['lat'] : self::$bornesMax['latMin'] ;
99 
		self::$bornesMax['lngMin'] = ($point['lng'] < self::$bornesMax['lngMin'] || self::$bornesMax['lngMin'] == null) ? $point['lng'] : self::$bornesMax['lngMin'] ;
100 
		self::$bornesMax['latMax'] = ($point['lat'] > self::$bornesMax['latMax'] || self::$bornesMax['latMax'] == null) ? $point['lat'] : self::$bornesMax['latMax'] ;
101 
		self::$bornesMax['lngMax'] = ($point['lng'] > self::$bornesMax['lngMax'] || self::$bornesMax['lngMax'] == null) ? $point['lng'] : self::$bornesMax['lngMax'] ;
1106 aurelien 102 
	}
1585 jpm 103 
 
1106 aurelien 104 
	public static function getBornes() {
105 
		return self::$bornesMax;
106 
	}
1585 jpm 107 
 
978 jpm 108 
	/**
1585 jpm 109 
	 *
978 jpm 110 
	 * @param mixed $noeud Le noeud à traiter par le quadtree
1585 jpm 111 
	 * @param float $neLat Latitude du coin nord est de la fenetre
112 
	 * @param float $neLng Longitude du coin nord est de la fenetre
113 
	 * @param float $swLat Latitude du coin sud ouest de la fenetre
114 
	 * @param float $swLng Longitude du coin sud ouest de la fenetre
978 jpm 115 
	 * @param int $profondeur profondeur courante de l'arbre
116 
	 */
117 
	private static function attribuerAuCadran(&$noeud, $neLat, $neLng, $swLat, $swLng, $profondeur = 0) {
118 
		$latCentre = round((($neLat+$swLat)/2)/self::$pasCorrectionCentre,0)*self::$pasCorrectionCentre;
119 
		$lngCentre = round((($neLng+$swLng)/2)/self::$pasCorrectionCentre,0)*self::$pasCorrectionCentre;
1585 jpm 120 
 
121 
		foreach ($noeud['points'] as &$point) {
1142 aurelien 122 
			if(!self::estUnPointAExclure($point)) {
1585 jpm 123 
				$emplacement = self::formaterPointPourAjout($point);
124 
				self::mettreAJourBornes($point);
979 jpm 125 
				$cadran = self::obtenirCadranPourPoint($latCentre, $lngCentre, $point);
126 
				self::ajouterFils($noeud,$cadran,$point);
1142 aurelien 127 
				self::$nbElements[$emplacement]++;
128 
			}
1172 aurelien 129 
			self::$nbElements['points']++;
977 jpm 130 
		}
1585 jpm 131 
 
977 jpm 132 
		$profondeur++;
1585 jpm 133 
 
1032 aurelien 134 
		if($profondeur <= self::$profondeurMax) {
135 
			(isset($noeud['A']) && $noeud['A'] != null) ? self::attribuerAuCadran($noeud['A'], $neLat, $lngCentre , $latCentre, $swLng, $profondeur) : '';
136 
			(isset($noeud['B']) && $noeud['B'] != null) ? self::attribuerAuCadran($noeud['B'], $neLat, $neLng, $latCentre, $lngCentre, $profondeur) : '';
137 
			(isset($noeud['C']) && $noeud['C'] != null) ? self::attribuerAuCadran($noeud['C'], $latCentre, $neLng, $swLat, $lngCentre, $profondeur) : '';
138 
			(isset($noeud['D']) && $noeud['D'] != null) ? self::attribuerAuCadran($noeud['D'], $latCentre, $lngCentre, $swLat, $swLng, $profondeur) : '';
977 jpm 139 
		}
1585 jpm 140 
 
978 jpm 141 
		if(self::estUnParentFeuilles($noeud)) {
142 
			self::$listeNoeudsSelectionnes[] = self::ajouterGroupeOuPoint($noeud);
977 jpm 143 
		}
144 
	}
1585 jpm 145 
 
1142 aurelien 146 
	private static function estUnPointAExclure(&$point) {
1585 jpm 147 
		return self::estSensible($point) &&
1142 aurelien 148 
		self::coordonneesCommuneSontNulles($point);
149 
	}
1585 jpm 150 
 
1142 aurelien 151 
	private static function coordonneesCommuneSontNulles(&$point) {
152 
		$coord_nulles = ($point['wgs84_latitude'] == null ||
153 
		$point['wgs84_latitude'] == '' ||
154 
		$point['wgs84_longitude'] == null ||
155 
		$point['wgs84_longitude'] == '');
156 
		return $coord_nulles;
157 
	}
1585 jpm 158 
 
1142 aurelien 159 
	private static function coordonneesSontNulles(&$point) {
1409 aurelien 160 
		$coord_nulles = ($point['latitude'] == '000null' ||
161 
				$point['latitude'] == 0 ||
1339 aurelien 162 
				$point['latitude'] == '' ||
163 
				$point['longitude'] == '000null' ||
1409 aurelien 164 
				$point['longitude'] == 0 ||
1339 aurelien 165 
				$point['longitude'] == '');
1142 aurelien 166 
		return $coord_nulles;
167 
	}
1585 jpm 168 
 
1142 aurelien 169 
	private static function estSensible(&$point) {
1483 aurelien 170 
		$sensible = isset($point['mots_cles_texte']) && substr_count(strtolower($point['mots_cles_texte']), 'sensible') != 0;
1142 aurelien 171 
		return $sensible;
172 
	}
1585 jpm 173 
 
1341 aurelien 174 
	private static function formaterNomStation(&$point, $type_emplacement) {
1142 aurelien 175 
		$station = '';
1341 aurelien 176 
		if($type_emplacement == 'stations' && $point['station'] != '' && $point['station'] != '000null') {
1142 aurelien 177 
			$station = $point['station'];
178 
		} else {
1585 jpm 179 
			$id_zone_geo = $point['ce_zone_geo'];
1472 aurelien 180 
			$station = $point['zone_geo'].(($id_zone_geo != '' && $id_zone_geo != '000null') ? ' ('.self::formaterNomZoneGeo($id_zone_geo).')' : '');
1032 aurelien 181 
		}
1585 jpm 182 
 
1142 aurelien 183 
		return $station;
1032 aurelien 184 
	}
1585 jpm 185 
 
1339 aurelien 186 
	private static function formaterNomZoneGeo($zone_geo) {
187 
		$zone_geo = str_replace('INSEE-C:', '', $zone_geo);
188 
		$zone_geo = strlen($zone_geo) >= 2 ? substr($zone_geo, 0, 2) : $zone_geo;
189 
		return $zone_geo;
190 
	}
1585 jpm 191 
 
1142 aurelien 192 
	private static function formaterPointPourAjout(&$point) {
193 
		if(isset($point['type_emplacement'])) {
194 
			return $point['type_emplacement'];
195 
		}
1585 jpm 196 
 
1142 aurelien 197 
		if(self::coordonneesSontNulles($point) || self::estSensible($point)) {
1144 aurelien 198 
			$point_allege = array();
199 
			$point_allege['id'] = self::MARQUEUR_COMMUNE.':'.$point['wgs84_latitude'].'|'.$point['wgs84_longitude'];
200 
			$point_allege['type_emplacement'] = 'communes';
1341 aurelien 201 
			$point_allege['nom'] = self::formaterNomStation($point, 'communes');
1144 aurelien 202 
			$point_allege['lat'] = (float)$point['wgs84_latitude'];
203 
			$point_allege['lng'] = (float)$point['wgs84_longitude'];
1585 jpm 204 
 
1144 aurelien 205 
			$point = $point_allege;
1142 aurelien 206 
		} else {
207 
			$point_allege = array();
1339 aurelien 208 
			$point_allege['id'] = self::MARQUEUR_STATION.':'.$point['latitude'].'|'.$point['longitude'];
1142 aurelien 209 
			$point_allege['type_emplacement'] = 'stations';
1341 aurelien 210 
			$point_allege['nom'] = self::formaterNomStation($point, 'stations');
1339 aurelien 211 
			$point_allege['lat'] = (float)$point['latitude'];
212 
			$point_allege['lng'] = (float)$point['longitude'];
1585 jpm 213 
 
1142 aurelien 214 
			$point = $point_allege;
215 
		}
1585 jpm 216 
 
1142 aurelien 217 
		return $point['type_emplacement'];
218 
	}
1585 jpm 219 
 
978 jpm 220 
	private function obtenirCadranPourPoint($latCentre,$lngCentre, &$point) {
221 
		if ($point['lng'] < $lngCentre) {
222 
			if ($point['lat'] > $latCentre) {
223 
					$cadran = 'A';
224 
				} else {
225 
					$cadran = 'D';
226 
				}
227 
		} else {
228 
			if ($point['lat'] > $latCentre) {
229 
				$cadran = 'B';
230 
			} else {
231 
				$cadran = 'C';
232 
			}
1585 jpm 233 
		}
978 jpm 234 
		return $cadran;
235 
	}
1585 jpm 236 
 
1003 jpm 237 
	private static function ajouterFils(&$noeud, $cadran, &$point) {
1032 aurelien 238 
		if(!isset($noeud[$cadran])) {
239 
			$noeud[$cadran] = array('points' => array(),'nbrePoints' => 0, 'latMoyenne' => 0, 'lngMoyenne' => 0);
1585 jpm 240 
		}
1032 aurelien 241 
		$noeud[$cadran]['points'][] = $point;
242 
		$noeud[$cadran]['nbrePoints']++;
243 
		$noeud[$cadran]['latMoyenne'] += $point['lat'];
244 
		$noeud[$cadran]['lngMoyenne'] += $point['lng'];
978 jpm 245 
	}
1585 jpm 246 
 
979 jpm 247 
	private static function ajouterGroupeOuPoint(&$noeud) {
977 jpm 248 
		$groupe = array();
1142 aurelien 249 
		if ($noeud['nbrePoints'] > 1 && isset($noeud['latMoyenne']) && isset($noeud['lngMoyenne'])) {
977 jpm 250 
			$groupe['lat'] = $noeud['latMoyenne']/$noeud['nbrePoints'];
251 
			$groupe['lng'] = $noeud['lngMoyenne']/$noeud['nbrePoints'];
978 jpm 252 
			$groupe['id'] = 'GROUPE:'.$groupe['lat'].';'.$groupe['lng'];
977 jpm 253 
			$groupe['nbreMarqueur'] = $noeud['nbrePoints'];
254 
		} else {
255 
			$groupe = $noeud['points'][0];
256 
		}
257 
		return $groupe;
258 
	}
1585 jpm 259 
 
260 
 
979 jpm 261 
	private static function estUnParentFeuilles(&$noeud) {
1585 jpm 262 
		return  self::estUneFeuille($noeud['A']) &&
263 
				self::estUneFeuille($noeud['B']) &&
264 
				self::estUneFeuille($noeud['C']) &&
978 jpm 265 
				self::estUneFeuille($noeud['D']);
266 
	}
1585 jpm 267 
 
268 
	private static function estUneFeuille(&$noeud) {
269 
		return $noeud == null ||
270 
		(!isset($noeud['A']) || $noeud['A'] == null) &&
271 
		(!isset($noeud['B']) || $noeud['B'] == null) &&
272 
		(!isset($noeud['C']) || $noeud['C'] == null) &&
1032 aurelien 273 
		(!isset($noeud['D']) || $noeud['D'] == null);
977 jpm 274 
	}
275 
}
276 
?>