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977 jpm 1 
<?php
2 
class CartoGroupage {
978 jpm 3 
 
1142 aurelien 4 
	const MARQUEUR_GROUPE = 'GROUPE';
5 
	const MARQUEUR_COMMUNE = 'COMMUNE';
6 
	const MARQUEUR_STATION = 'STATION';
7 
 
1032 aurelien 8 
	private static $seuilClusterisation = 200;
978 jpm 9 
	private static $zoomDefaut = 3;
10 
	private static $zoomMaxClustering = 12;
11 
	private static $pasZoomDefaut = 1;
12 
	private static $pasZoomMaxClustering = 0.05;
13 
	private static $profondeurMin = 0;
14 
	private static $profondeurMax = 8;
1032 aurelien 15 
 
978 jpm 16 
	private static $pasCorrectionCentre = null;
1032 aurelien 17 
	private static $coefficientReductionPas = null;
978 jpm 18 
	private static $coefficientProfondeurMax = null;
1032 aurelien 19 
 
1172 aurelien 20 
	private static $nbElements = array('stations' => 0,'communes' => 0, 'points' => 0);
1142 aurelien 21 
	private static $listeNoeudsSelectionnes = array();
1106 aurelien 22 
	private static $bornesMax = array('latMin' => null, 'lngMin' => null, 'latMax' => null, 'lngMax' => null);
1142 aurelien 23 
	private static $id_traites = array();
978 jpm 24 
	/*
25 
	  +---------+---------+
26 
	  |         |         |
27 
	  |    A    |    B    |
28 
	  |         |         |
29 
	  +---------*---------+
30 
	  |         |         |
31 
	  |    D    |    C    |
32 
	  |         |         |
33 
	  +---------+---------+
1032 aurelien 34 
 
978 jpm 35 
	  Quatres cadrans sont considérés par le quad tree
1032 aurelien 36 
	  * = centre de la fenetre
978 jpm 37 
	 */
979 jpm 38 
	public static function creerGroupesQuadtree(&$markers, $neLat, $neLng, $swLat, $swLng, $zoom = 3) {
1032 aurelien 39 
		if(count($markers) > self::$seuilClusterisation) {
40 
 
978 jpm 41 
			self::calculerProfondeurMax($zoom);
42 
			self::calculerPasCorrectionCentre($zoom);
43 
 
44 
			$noeudRacine = array('nbrePoints' => count($markers), 'points' => $markers);
1032 aurelien 45 
			self::attribuerAuCadran($noeudRacine, $neLat, $neLng, $swLat, $swLng);
46 
 
1004 jpm 47 
		} else {
1142 aurelien 48 
			foreach($markers as &$marker) {
49 
				if(!self::estUnPointAExclure($marker)) {
50 
					$emplacement = self::formaterPointPourAjout(&$marker);
51 
					self::mettreAJourBornes(&$marker);
52 
					$points = array($marker);
53 
					$noeudSimple = array('points' => $points, 'nbrePoints' => 1);
54 
					self::$nbElements[$emplacement]++;
55 
					self::$listeNoeudsSelectionnes[] = self::ajouterGroupeOuPoint($noeudSimple);
56 
				}
1172 aurelien 57 
				self::$nbElements['points']++;
977 jpm 58 
			}
978 jpm 59 
		}
60 
		return self::$listeNoeudsSelectionnes;
61 
	}
1032 aurelien 62 
 
978 jpm 63 
	private function calculerCoefficientReductionPas() {
64 
		if(self::$coefficientReductionPas == null) {
65 
			self::$coefficientReductionPas = (self::$pasZoomMaxClustering - self::$pasZoomDefaut)/(self::$zoomMaxClustering - self::$zoomDefaut);
977 jpm 66 
		}
1032 aurelien 67 
 
978 jpm 68 
		return self::$coefficientReductionPas;
977 jpm 69 
	}
1032 aurelien 70 
 
978 jpm 71 
	private function calculerPasCorrectionCentre($zoom) {
72 
		self::$pasCorrectionCentre = ($zoom - self::$zoomDefaut) * self::calculerCoefficientReductionPas() + self::$pasZoomDefaut;
977 jpm 73 
	}
1032 aurelien 74 
 
978 jpm 75 
	private function calculerCoefficientProfondeurMax() {
76 
		if(self::$coefficientProfondeurMax == null) {
77 
			self::$coefficientProfondeurMax = (self::$profondeurMax - self::$profondeurMin)/(self::$zoomMaxClustering - self::$zoomDefaut);
977 jpm 78 
		}
1032 aurelien 79 
 
978 jpm 80 
		return self::$coefficientProfondeurMax;
977 jpm 81 
	}
1032 aurelien 82 
 
83 
	private function calculerProfondeurMax($zoom) {
84 
		if($zoom > self::$zoomDefaut) {
85 
			self::$profondeurMax = round(($zoom - self::$zoomDefaut) * self::calculerCoefficientProfondeurMax() + self::$profondeurMin,0);
977 jpm 86 
		} else {
978 jpm 87 
			self::$profondeurMax = 1;
977 jpm 88 
		}
89 
	}
1032 aurelien 90 
 
979 jpm 91 
	public static function getNbElements() {
92 
		return self::$nbElements;
93 
	}
1032 aurelien 94 
 
1106 aurelien 95 
	public static function mettreAJourBornes(&$point) {
1142 aurelien 96 
 
97 
		if(!is_numeric($point['lat']) || abs($point['lat']) > 90) return;
98 
		if(!is_numeric($point['lng']) || abs($point['lng']) > 180) return;
99 
 
100 
		self::$bornesMax['latMin'] = ($point['lat'] < self::$bornesMax['latMin'] || self::$bornesMax['latMin'] == null) ? $point['lat'] : self::$bornesMax['latMin'] ;
101 
		self::$bornesMax['lngMin'] = ($point['lng'] < self::$bornesMax['lngMin'] || self::$bornesMax['lngMin'] == null) ? $point['lng'] : self::$bornesMax['lngMin'] ;
102 
		self::$bornesMax['latMax'] = ($point['lat'] > self::$bornesMax['latMax'] || self::$bornesMax['latMax'] == null) ? $point['lat'] : self::$bornesMax['latMax'] ;
103 
		self::$bornesMax['lngMax'] = ($point['lng'] > self::$bornesMax['lngMax'] || self::$bornesMax['lngMax'] == null) ? $point['lng'] : self::$bornesMax['lngMax'] ;
1106 aurelien 104 
	}
105 
 
106 
	public static function getBornes() {
107 
		return self::$bornesMax;
108 
	}
109 
 
978 jpm 110 
	/**
1032 aurelien 111 
	 *
978 jpm 112 
	 * @param mixed $noeud Le noeud à traiter par le quadtree
1032 aurelien 113 
	 * @param float $neLat Latitude du coin nord est de la fenetre
114 
	 * @param float $neLng Longitude du coin nord est de la fenetre
115 
	 * @param float $swLat Latitude du coin sud ouest de la fenetre
116 
	 * @param float $swLng Longitude du coin sud ouest de la fenetre
978 jpm 117 
	 * @param int $profondeur profondeur courante de l'arbre
118 
	 */
119 
	private static function attribuerAuCadran(&$noeud, $neLat, $neLng, $swLat, $swLng, $profondeur = 0) {
1032 aurelien 120 
 
978 jpm 121 
		$latCentre = round((($neLat+$swLat)/2)/self::$pasCorrectionCentre,0)*self::$pasCorrectionCentre;
122 
		$lngCentre = round((($neLng+$swLng)/2)/self::$pasCorrectionCentre,0)*self::$pasCorrectionCentre;
1032 aurelien 123 
 
1142 aurelien 124 
		foreach ($noeud['points'] as &$point) {
125 
			if(!self::estUnPointAExclure($point)) {
126 
				$emplacement = self::formaterPointPourAjout(&$point);
1106 aurelien 127 
				self::mettreAJourBornes(&$point);
979 jpm 128 
				$cadran = self::obtenirCadranPourPoint($latCentre, $lngCentre, $point);
129 
				self::ajouterFils($noeud,$cadran,$point);
1142 aurelien 130 
				self::$nbElements[$emplacement]++;
131 
			}
1172 aurelien 132 
			self::$nbElements['points']++;
977 jpm 133 
		}
1032 aurelien 134 
 
977 jpm 135 
		$profondeur++;
1032 aurelien 136 
 
137 
		if($profondeur <= self::$profondeurMax) {
138 
			(isset($noeud['A']) && $noeud['A'] != null) ? self::attribuerAuCadran($noeud['A'], $neLat, $lngCentre , $latCentre, $swLng, $profondeur) : '';
139 
			(isset($noeud['B']) && $noeud['B'] != null) ? self::attribuerAuCadran($noeud['B'], $neLat, $neLng, $latCentre, $lngCentre, $profondeur) : '';
140 
			(isset($noeud['C']) && $noeud['C'] != null) ? self::attribuerAuCadran($noeud['C'], $latCentre, $neLng, $swLat, $lngCentre, $profondeur) : '';
141 
			(isset($noeud['D']) && $noeud['D'] != null) ? self::attribuerAuCadran($noeud['D'], $latCentre, $lngCentre, $swLat, $swLng, $profondeur) : '';
977 jpm 142 
		}
1032 aurelien 143 
 
978 jpm 144 
		if(self::estUnParentFeuilles($noeud)) {
145 
			self::$listeNoeudsSelectionnes[] = self::ajouterGroupeOuPoint($noeud);
977 jpm 146 
		}
147 
	}
1032 aurelien 148 
 
1142 aurelien 149 
	private static function estUnPointAExclure(&$point) {
150 
		return self::estSensible($point) &&
151 
		self::coordonneesCommuneSontNulles($point);
152 
	}
153 
 
154 
	private static function coordonneesCommuneSontNulles(&$point) {
155 
		$coord_nulles = ($point['wgs84_latitude'] == null ||
156 
		$point['wgs84_latitude'] == '' ||
157 
		$point['wgs84_longitude'] == null ||
158 
		$point['wgs84_longitude'] == '');
159 
		return $coord_nulles;
160 
	}
161 
 
162 
	private static function coordonneesSontNulles(&$point) {
163 
 
1409 aurelien 164 
		$coord_nulles = ($point['latitude'] == '000null' ||
165 
				$point['latitude'] == 0 ||
1339 aurelien 166 
				$point['latitude'] == '' ||
167 
				$point['longitude'] == '000null' ||
1409 aurelien 168 
				$point['longitude'] == 0 ||
1339 aurelien 169 
				$point['longitude'] == '');
1142 aurelien 170 
		return $coord_nulles;
171 
	}
172 
 
173 
	private static function estSensible(&$point) {
174 
		$sensible = isset($point['mots_cles_texte']) && substr_count($point['mots_cles_texte'], 'sensible') != 0;
175 
		return $sensible;
176 
	}
177 
 
1341 aurelien 178 
	private static function formaterNomStation(&$point, $type_emplacement) {
1142 aurelien 179 
		$station = '';
1341 aurelien 180 
		if($type_emplacement == 'stations' && $point['station'] != '' && $point['station'] != '000null') {
1142 aurelien 181 
			$station = $point['station'];
182 
		} else {
1472 aurelien 183 
			$id_zone_geo = $point['ce_zone_geo'];
184 
			$station = $point['zone_geo'].(($id_zone_geo != '' && $id_zone_geo != '000null') ? ' ('.self::formaterNomZoneGeo($id_zone_geo).')' : '');
1032 aurelien 185 
		}
1142 aurelien 186 
 
187 
		return $station;
1032 aurelien 188 
	}
189 
 
1339 aurelien 190 
	private static function formaterNomZoneGeo($zone_geo) {
191 
		$zone_geo = str_replace('INSEE-C:', '', $zone_geo);
192 
		$zone_geo = strlen($zone_geo) >= 2 ? substr($zone_geo, 0, 2) : $zone_geo;
193 
		return $zone_geo;
194 
	}
195 
 
1142 aurelien 196 
	private static function formaterPointPourAjout(&$point) {
197 
 
198 
		if(isset($point['type_emplacement'])) {
199 
			return $point['type_emplacement'];
200 
		}
201 
 
202 
		if(self::coordonneesSontNulles($point) || self::estSensible($point)) {
1144 aurelien 203 
			$point_allege = array();
204 
			$point_allege['id'] = self::MARQUEUR_COMMUNE.':'.$point['wgs84_latitude'].'|'.$point['wgs84_longitude'];
205 
			$point_allege['type_emplacement'] = 'communes';
1341 aurelien 206 
			$point_allege['nom'] = self::formaterNomStation($point, 'communes');
1144 aurelien 207 
			$point_allege['lat'] = (float)$point['wgs84_latitude'];
208 
			$point_allege['lng'] = (float)$point['wgs84_longitude'];
209 
 
210 
			$point = $point_allege;
1142 aurelien 211 
		} else {
212 
			$point_allege = array();
1339 aurelien 213 
			$point_allege['id'] = self::MARQUEUR_STATION.':'.$point['latitude'].'|'.$point['longitude'];
1142 aurelien 214 
			$point_allege['type_emplacement'] = 'stations';
1341 aurelien 215 
			$point_allege['nom'] = self::formaterNomStation($point, 'stations');
1339 aurelien 216 
			$point_allege['lat'] = (float)$point['latitude'];
217 
			$point_allege['lng'] = (float)$point['longitude'];
1142 aurelien 218 
 
219 
			$point = $point_allege;
220 
		}
221 
 
222 
		return $point['type_emplacement'];
223 
	}
224 
 
978 jpm 225 
	private function obtenirCadranPourPoint($latCentre,$lngCentre, &$point) {
226 
		if ($point['lng'] < $lngCentre) {
227 
			if ($point['lat'] > $latCentre) {
228 
					$cadran = 'A';
229 
				} else {
230 
					$cadran = 'D';
231 
				}
232 
		} else {
233 
			if ($point['lat'] > $latCentre) {
234 
				$cadran = 'B';
235 
			} else {
236 
				$cadran = 'C';
237 
			}
1032 aurelien 238 
		}
978 jpm 239 
		return $cadran;
240 
	}
1032 aurelien 241 
 
1003 jpm 242 
	private static function ajouterFils(&$noeud, $cadran, &$point) {
1032 aurelien 243 
		if(!isset($noeud[$cadran])) {
244 
			$noeud[$cadran] = array('points' => array(),'nbrePoints' => 0, 'latMoyenne' => 0, 'lngMoyenne' => 0);
245 
		}
246 
		$noeud[$cadran]['points'][] = $point;
247 
		$noeud[$cadran]['nbrePoints']++;
248 
		$noeud[$cadran]['latMoyenne'] += $point['lat'];
249 
		$noeud[$cadran]['lngMoyenne'] += $point['lng'];
978 jpm 250 
	}
1032 aurelien 251 
 
979 jpm 252 
	private static function ajouterGroupeOuPoint(&$noeud) {
977 jpm 253 
		$groupe = array();
1142 aurelien 254 
		if ($noeud['nbrePoints'] > 1 && isset($noeud['latMoyenne']) && isset($noeud['lngMoyenne'])) {
977 jpm 255 
			$groupe['lat'] = $noeud['latMoyenne']/$noeud['nbrePoints'];
256 
			$groupe['lng'] = $noeud['lngMoyenne']/$noeud['nbrePoints'];
978 jpm 257 
			$groupe['id'] = 'GROUPE:'.$groupe['lat'].';'.$groupe['lng'];
977 jpm 258 
			$groupe['nbreMarqueur'] = $noeud['nbrePoints'];
259 
		} else {
260 
			$groupe = $noeud['points'][0];
261 
		}
262 
		return $groupe;
263 
	}
1032 aurelien 264 
 
1148 aurelien 265 
 
979 jpm 266 
	private static function estUnParentFeuilles(&$noeud) {
1032 aurelien 267 
		return  self::estUneFeuille($noeud['A']) &&
268 
				self::estUneFeuille($noeud['B']) &&
269 
				self::estUneFeuille($noeud['C']) &&
978 jpm 270 
				self::estUneFeuille($noeud['D']);
271 
	}
1032 aurelien 272 
 
273 
	private static function estUneFeuille(&$noeud) {
274 
		return $noeud == null ||
275 
		(!isset($noeud['A']) || $noeud['A'] == null) &&
276 
		(!isset($noeud['B']) || $noeud['B'] == null) &&
277 
		(!isset($noeud['C']) || $noeud['C'] == null) &&
278 
		(!isset($noeud['D']) || $noeud['D'] == null);
977 jpm 279 
	}
280 
}
281 
?>