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1 
<?php
 1 
<?php
2 
class CartoGroupage {
 2 
class CartoGroupage {
3 
 
 3 
 
4 
	private static $seuilClusterisation = 200;
 4 
	private static $seuilClusterisation = 200;
5 
	private static $zoomDefaut = 3;
 5 
	private static $zoomDefaut = 3;
6 
	private static $zoomMaxClustering = 12;
 6 
	private static $zoomMaxClustering = 12;
7 
	private static $pasZoomDefaut = 1;
 7 
	private static $pasZoomDefaut = 1;
8 
	private static $pasZoomMaxClustering = 0.05;
 8 
	private static $pasZoomMaxClustering = 0.05;
9 
	private static $profondeurMin = 0;
 9 
	private static $profondeurMin = 0;
10 
	private static $profondeurMax = 8;
 10 
	private static $profondeurMax = 8;
11
11
12 
	private static $pasCorrectionCentre = null;
 12 
	private static $pasCorrectionCentre = null;
13 
	private static $coefficientReductionPas = null;
13 
	private static $coefficientReductionPas = null;
14 
	private static $coefficientProfondeurMax = null;
 14 
	private static $coefficientProfondeurMax = null;
15
15
16 
	private static $nbElements = array('stations' => 0,'communes' => 0, 'observations' => 0);
 16 
	private static $nbElements = array('stations' => 0,'communes' => 0, 'observations' => 0);
17 
 
 17 
 
18 
	private static $listeNoeudsSelectionnes = array();
 18 
	private static $listeNoeudsSelectionnes = array();
19
19
20 
	private static $pointsDejaTraites = array();
 20 
	private static $pointsDejaTraites = array();
21 
 
 21 
 
22 
	/*
 22 
	/*
23 
	  +---------+---------+
 23 
	  +---------+---------+
24 
	  |         |         |
 24 
	  |         |         |
25 
	  |    A    |    B    |
 25 
	  |    A    |    B    |
26 
	  |         |         |
 26 
	  |         |         |
27 
	  +---------*---------+
 27 
	  +---------*---------+
28 
	  |         |         |
 28 
	  |         |         |
29 
	  |    D    |    C    |
 29 
	  |    D    |    C    |
30 
	  |         |         |
 30 
	  |         |         |
31 
	  +---------+---------+
 31 
	  +---------+---------+
32
32
33 
	  Quatres cadrans sont considérés par le quad tree
 33 
	  Quatres cadrans sont considérés par le quad tree
34 
	  * = centre de la fenetre
34 
	  * = centre de la fenetre
35 
	 */
 35 
	 */
36 
	public static function creerGroupesQuadtree(&$markers, $neLat, $neLng, $swLat, $swLng, $zoom = 3) {
 36 
	public static function creerGroupesQuadtree(&$markers, $neLat, $neLng, $swLat, $swLng, $zoom = 3) {
37 
		if(count($markers) > self::$seuilClusterisation) {
 37 
		if(count($markers) > self::$seuilClusterisation) {
38
38
39 
			self::calculerProfondeurMax($zoom);
 39 
			self::calculerProfondeurMax($zoom);
40 
			self::calculerPasCorrectionCentre($zoom);
 40 
			self::calculerPasCorrectionCentre($zoom);
41 
 
 41 
 
42 
			$noeudRacine = array('nbrePoints' => count($markers), 'points' => $markers);
 42 
			$noeudRacine = array('nbrePoints' => count($markers), 'points' => $markers);
43 
			self::attribuerAuCadran($noeudRacine, $neLat, $neLng, $swLat, $swLng);
43 
			self::attribuerAuCadran($noeudRacine, $neLat, $neLng, $swLat, $swLng);
44
44
45 
		} else {
 45 
		} else {
46 
			foreach($markers as $marker) {
 46 
			foreach($markers as $marker) {
47 
				$points = array($marker);
 47 
				$points = array($marker);
48 
				$noeudSimple = array('points' => $points, 'nbrePoints' => 1);
 48 
				$noeudSimple = array('points' => $points, 'nbrePoints' => 1);
- 
 
 49 
				self::$nbElements['observations']++;
- 
 
 50 
				$emplacement = isset($marker['type_emplacement']) ? $marker['type_emplacement'] : self::obtenirTypeEmplacementParId(&$marker);
- 
 
 51 
				self::$nbElements[$emplacement]++;
- 
 
 52 
				unset($marker['type_emplacement']);
49 
				self::$listeNoeudsSelectionnes[] = self::ajouterGroupeOuPoint($noeudSimple);
 53 
				self::$listeNoeudsSelectionnes[] = self::ajouterGroupeOuPoint($noeudSimple);
50 
			}
 54 
			}
51 
		}
 55 
		}
52
56
53 
		return self::$listeNoeudsSelectionnes;
 57 
		return self::$listeNoeudsSelectionnes;
54 
	}
 58 
	}
55
59
56 
	private function calculerCoefficientReductionPas() {
 60 
	private function calculerCoefficientReductionPas() {
57 
		if(self::$coefficientReductionPas == null) {
 61 
		if(self::$coefficientReductionPas == null) {
58 
			self::$coefficientReductionPas = (self::$pasZoomMaxClustering - self::$pasZoomDefaut)/(self::$zoomMaxClustering - self::$zoomDefaut);
 62 
			self::$coefficientReductionPas = (self::$pasZoomMaxClustering - self::$pasZoomDefaut)/(self::$zoomMaxClustering - self::$zoomDefaut);
59 
		}
 63 
		}
60
64
61 
		return self::$coefficientReductionPas;
 65 
		return self::$coefficientReductionPas;
62 
	}
 66 
	}
63
67
64 
	private function calculerPasCorrectionCentre($zoom) {
 68 
	private function calculerPasCorrectionCentre($zoom) {
65 
		self::$pasCorrectionCentre = ($zoom - self::$zoomDefaut) * self::calculerCoefficientReductionPas() + self::$pasZoomDefaut;
 69 
		self::$pasCorrectionCentre = ($zoom - self::$zoomDefaut) * self::calculerCoefficientReductionPas() + self::$pasZoomDefaut;
66 
	}
 70 
	}
67
71
68 
	private function calculerCoefficientProfondeurMax() {
 72 
	private function calculerCoefficientProfondeurMax() {
69 
		if(self::$coefficientProfondeurMax == null) {
 73 
		if(self::$coefficientProfondeurMax == null) {
70 
			self::$coefficientProfondeurMax = (self::$profondeurMax - self::$profondeurMin)/(self::$zoomMaxClustering - self::$zoomDefaut);
 74 
			self::$coefficientProfondeurMax = (self::$profondeurMax - self::$profondeurMin)/(self::$zoomMaxClustering - self::$zoomDefaut);
71 
		}
 75 
		}
72
76
73 
		return self::$coefficientProfondeurMax;
 77 
		return self::$coefficientProfondeurMax;
74 
	}
 78 
	}
75
79
76 
	private function calculerProfondeurMax($zoom) {
80 
	private function calculerProfondeurMax($zoom) {
77 
		if($zoom > self::$zoomDefaut) {
81 
		if($zoom > self::$zoomDefaut) {
78 
			self::$profondeurMax = round(($zoom - self::$zoomDefaut) * self::calculerCoefficientProfondeurMax() + self::$profondeurMin,0);
 82 
			self::$profondeurMax = round(($zoom - self::$zoomDefaut) * self::calculerCoefficientProfondeurMax() + self::$profondeurMin,0);
79 
		} else {
 83 
		} else {
80 
			self::$profondeurMax = 1;
 84 
			self::$profondeurMax = 1;
81 
		}
 85 
		}
82 
	}
 86 
	}
83
87
84 
	public static function getNbElements() {
 88 
	public static function getNbElements() {
85 
		return self::$nbElements;
 89 
		return self::$nbElements;
86 
	}
 90 
	}
87
91
88 
	/**
 92 
	/**
89 
	 *
93 
	 *
90 
	 * @param mixed $noeud Le noeud à traiter par le quadtree
 94 
	 * @param mixed $noeud Le noeud à traiter par le quadtree
91 
	 * @param float $neLat Latitude du coin nord est de la fenetre
95 
	 * @param float $neLat Latitude du coin nord est de la fenetre
92 
	 * @param float $neLng Longitude du coin nord est de la fenetre
96 
	 * @param float $neLng Longitude du coin nord est de la fenetre
93 
	 * @param float $swLat Latitude du coin sud ouest de la fenetre
97 
	 * @param float $swLat Latitude du coin sud ouest de la fenetre
94 
	 * @param float $swLng Longitude du coin sud ouest de la fenetre
98 
	 * @param float $swLng Longitude du coin sud ouest de la fenetre
95 
	 * @param int $profondeur profondeur courante de l'arbre
 99 
	 * @param int $profondeur profondeur courante de l'arbre
96 
	 */
 100 
	 */
97 
	private static function attribuerAuCadran(&$noeud, $neLat, $neLng, $swLat, $swLng, $profondeur = 0) {
 101 
	private static function attribuerAuCadran(&$noeud, $neLat, $neLng, $swLat, $swLng, $profondeur = 0) {
98
102
99 
		$latCentre = round((($neLat+$swLat)/2)/self::$pasCorrectionCentre,0)*self::$pasCorrectionCentre;
 103 
		$latCentre = round((($neLat+$swLat)/2)/self::$pasCorrectionCentre,0)*self::$pasCorrectionCentre;
100 
		$lngCentre = round((($neLng+$swLng)/2)/self::$pasCorrectionCentre,0)*self::$pasCorrectionCentre;
 104 
		$lngCentre = round((($neLng+$swLng)/2)/self::$pasCorrectionCentre,0)*self::$pasCorrectionCentre;
101
105
102 
		foreach ($noeud['points'] as &$point) {
 106 
		foreach ($noeud['points'] as &$point) {
103 
				self::$nbElements['observations']++;
 107 
				self::$nbElements['observations']++;
104 
				$emplacement = isset($point['type_emplacement']) ? $point['type_emplacement'] : self::obtenirTypeEmplacementParId(&$point);
 108 
				$emplacement = isset($point['type_emplacement']) ? $point['type_emplacement'] : self::obtenirTypeEmplacementParId(&$point);
105 
				self::$nbElements[$emplacement]++;
 109 
				self::$nbElements[$emplacement]++;
106 
				unset($point['type_emplacement']);
 110 
				unset($point['type_emplacement']);
107 
				$cadran = self::obtenirCadranPourPoint($latCentre, $lngCentre, $point);
 111 
				$cadran = self::obtenirCadranPourPoint($latCentre, $lngCentre, $point);
108 
				self::ajouterFils($noeud,$cadran,$point);
 112 
				self::ajouterFils($noeud,$cadran,$point);
109 
		}
 113 
		}
110
114
111 
		$profondeur++;
 115 
		$profondeur++;
112
116
113 
		if($profondeur <= self::$profondeurMax) {
 117 
		if($profondeur <= self::$profondeurMax) {
114 
			(isset($noeud['A']) && $noeud['A'] != null) ? self::attribuerAuCadran($noeud['A'], $neLat, $lngCentre , $latCentre, $swLng, $profondeur) : '';
 118 
			(isset($noeud['A']) && $noeud['A'] != null) ? self::attribuerAuCadran($noeud['A'], $neLat, $lngCentre , $latCentre, $swLng, $profondeur) : '';
115 
			(isset($noeud['B']) && $noeud['B'] != null) ? self::attribuerAuCadran($noeud['B'], $neLat, $neLng, $latCentre, $lngCentre, $profondeur) : '';
 119 
			(isset($noeud['B']) && $noeud['B'] != null) ? self::attribuerAuCadran($noeud['B'], $neLat, $neLng, $latCentre, $lngCentre, $profondeur) : '';
116 
			(isset($noeud['C']) && $noeud['C'] != null) ? self::attribuerAuCadran($noeud['C'], $latCentre, $neLng, $swLat, $lngCentre, $profondeur) : '';
 120 
			(isset($noeud['C']) && $noeud['C'] != null) ? self::attribuerAuCadran($noeud['C'], $latCentre, $neLng, $swLat, $lngCentre, $profondeur) : '';
117 
			(isset($noeud['D']) && $noeud['D'] != null) ? self::attribuerAuCadran($noeud['D'], $latCentre, $lngCentre, $swLat, $swLng, $profondeur) : '';
 121 
			(isset($noeud['D']) && $noeud['D'] != null) ? self::attribuerAuCadran($noeud['D'], $latCentre, $lngCentre, $swLat, $swLng, $profondeur) : '';
118 
		}
 122 
		}
119
123
120 
		if(self::estUnParentFeuilles($noeud)) {
 124 
		if(self::estUnParentFeuilles($noeud)) {
121 
			self::$listeNoeudsSelectionnes[] = self::ajouterGroupeOuPoint($noeud);
 125 
			self::$listeNoeudsSelectionnes[] = self::ajouterGroupeOuPoint($noeud);
122 
		}
 126 
		}
123 
	}
 127 
	}
124
128
125 
	private static function obtenirTypeEmplacementParId($point) {
 129 
	private static function obtenirTypeEmplacementParId($point) {
126 
		$tableau_point_id = explode(':',$point['id'],2);
 130 
		$tableau_point_id = explode(':',$point['id'],2);
127 
		switch($tableau_point_id[0]) {
 131 
		switch($tableau_point_id[0]) {
128 
			case 'STATION':
 132 
			case 'STATION':
129 
				$type_emplacement = 'stations';
 133 
				$type_emplacement = 'stations';
130 
			break;
 134 
			break;
131 
			case 'COMMUNE':
 135 
			case 'COMMUNE':
132 
				$type_emplacement = 'communes';
 136 
				$type_emplacement = 'communes';
133 
			break;
 137 
			break;
134 
		}
 138 
		}
135 
		return $type_emplacement;
 139 
		return $type_emplacement;
136 
	}
 140 
	}
137
141
138 
	private function obtenirCadranPourPoint($latCentre,$lngCentre, &$point) {
 142 
	private function obtenirCadranPourPoint($latCentre,$lngCentre, &$point) {
139 
		if ($point['lng'] < $lngCentre) {
 143 
		if ($point['lng'] < $lngCentre) {
140 
			if ($point['lat'] > $latCentre) {
 144 
			if ($point['lat'] > $latCentre) {
141 
					$cadran = 'A';
 145 
					$cadran = 'A';
142 
				} else {
 146 
				} else {
143 
					$cadran = 'D';
 147 
					$cadran = 'D';
144 
				}
 148 
				}
145 
		} else {
 149 
		} else {
146 
			if ($point['lat'] > $latCentre) {
 150 
			if ($point['lat'] > $latCentre) {
147 
				$cadran = 'B';
 151 
				$cadran = 'B';
148 
			} else {
 152 
			} else {
149 
				$cadran = 'C';
 153 
				$cadran = 'C';
150 
			}
 154 
			}
151 
		}
155 
		}
152 
		return $cadran;
 156 
		return $cadran;
153 
	}
 157 
	}
154
158
155 
	private static function ajouterFils(&$noeud, $cadran, &$point) {
 159 
	private static function ajouterFils(&$noeud, $cadran, &$point) {
156 
		if(!isset($noeud[$cadran])) {
 160 
		if(!isset($noeud[$cadran])) {
157 
			$noeud[$cadran] = array('points' => array(),'nbrePoints' => 0, 'latMoyenne' => 0, 'lngMoyenne' => 0);
 161 
			$noeud[$cadran] = array('points' => array(),'nbrePoints' => 0, 'latMoyenne' => 0, 'lngMoyenne' => 0);
158 
		}
162 
		}
159 
		$noeud[$cadran]['points'][] = $point;
 163 
		$noeud[$cadran]['points'][] = $point;
160 
		$noeud[$cadran]['nbrePoints']++;
 164 
		$noeud[$cadran]['nbrePoints']++;
161 
		$noeud[$cadran]['latMoyenne'] += $point['lat'];
 165 
		$noeud[$cadran]['latMoyenne'] += $point['lat'];
162 
		$noeud[$cadran]['lngMoyenne'] += $point['lng'];
 166 
		$noeud[$cadran]['lngMoyenne'] += $point['lng'];
163 
	}
 167 
	}
164
168
165 
	private static function ajouterGroupeOuPoint(&$noeud) {
 169 
	private static function ajouterGroupeOuPoint(&$noeud) {
166 
		$groupe = array();
 170 
		$groupe = array();
167 
		if ($noeud['nbrePoints'] > 1) {
 171 
		if ($noeud['nbrePoints'] > 1) {
168 
			$groupe['lat'] = $noeud['latMoyenne']/$noeud['nbrePoints'];
 172 
			$groupe['lat'] = $noeud['latMoyenne']/$noeud['nbrePoints'];
169 
			$groupe['lng'] = $noeud['lngMoyenne']/$noeud['nbrePoints'];
 173 
			$groupe['lng'] = $noeud['lngMoyenne']/$noeud['nbrePoints'];
170 
			$groupe['id'] = 'GROUPE:'.$groupe['lat'].';'.$groupe['lng'];
 174 
			$groupe['id'] = 'GROUPE:'.$groupe['lat'].';'.$groupe['lng'];
171 
			$groupe['nbreMarqueur'] = $noeud['nbrePoints'];
 175 
			$groupe['nbreMarqueur'] = $noeud['nbrePoints'];
172 
		} else {
 176 
		} else {
173 
			$groupe = $noeud['points'][0];
 177 
			$groupe = $noeud['points'][0];
174 
		}
 178 
		}
175 
		return $groupe;
 179 
		return $groupe;
176 
	}
 180 
	}
177
181
178 
	private static function estUnParentFeuilles(&$noeud) {
 182 
	private static function estUnParentFeuilles(&$noeud) {
179 
		return  self::estUneFeuille($noeud['A']) &&
183 
		return  self::estUneFeuille($noeud['A']) &&
180 
				self::estUneFeuille($noeud['B']) &&
184 
				self::estUneFeuille($noeud['B']) &&
181 
				self::estUneFeuille($noeud['C']) &&
185 
				self::estUneFeuille($noeud['C']) &&
182 
				self::estUneFeuille($noeud['D']);
 186 
				self::estUneFeuille($noeud['D']);
183 
	}
 187 
	}
184
188
185 
	private static function estUneFeuille(&$noeud) {
189 
	private static function estUneFeuille(&$noeud) {
186 
		return $noeud == null ||
190 
		return $noeud == null ||
187 
		(!isset($noeud['A']) || $noeud['A'] == null) &&
191 
		(!isset($noeud['A']) || $noeud['A'] == null) &&
188 
		(!isset($noeud['B']) || $noeud['B'] == null) &&
192 
		(!isset($noeud['B']) || $noeud['B'] == null) &&
189 
		(!isset($noeud['C']) || $noeud['C'] == null) &&
193 
		(!isset($noeud['C']) || $noeud['C'] == null) &&
190 
		(!isset($noeud['D']) || $noeud['D'] == null);
 194 
		(!isset($noeud['D']) || $noeud['D'] == null);
191 
	}
 195 
	}
192 
}
 196 
}
193 
?>
 197 
?>