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<?php |
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/** |
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* @copyright Copyright (c) 2013-2015 2amigOS! Consulting Group LLC |
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* @link http://2amigos.us |
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* @license http://www.opensource.org/licenses/bsd-license.php New BSD License |
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*/ |
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namespace dosamigos\leaflet\types; |
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use yii\base\InvalidConfigException; |
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use yii\base\InvalidParamException; |
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use yii\web\JsExpression; |
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/** |
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* LatLngBounds represents a rectangular geographical area on a map. |
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* |
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* @see http://leafletjs.com/reference.html#latlngbounds |
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* @author Antonio Ramirez <[email protected]> |
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* @link http://www.ramirezcobos.com/ |
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* @link http://www.2amigos.us/ |
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* @package dosamigos\leaflet\types |
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*/ |
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/** |
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* @property LatLng $southWest |
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* @property LatLng $northEast |
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*/ |
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class LatLngBounds extends Type |
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{ |
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/** |
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* @var string the variable name. If not null, then the js icon creation script |
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* will be returned as a variable: |
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* |
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* ``` |
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* var bounds = L.latLngBounds(...); |
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* // after it can be included to the map |
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* map.fitBounds(bounds); |
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* ``` |
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* If null, the js icon creation script will be returned to be used as constructor so it can be used within another |
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* constructor options: |
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* |
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* ``` |
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* L.map({maxBounds: L.latLngBounds(...)); |
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* ``` |
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*/ |
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public $name; |
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/** |
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* @var LatLng the southWest boundary |
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*/ |
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private $_southWest; |
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/** |
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* @var LatLng the northEast boundary |
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*/ |
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private $_northEast; |
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/** |
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* @return LatLng |
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*/ |
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public function getSouthWest() |
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{ |
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return $this->_southWest; |
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} |
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/** |
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* @param LatLng $latLng |
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*/ |
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public function setSouthWest(LatLng $latLng) |
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{ |
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$this->_southWest = $latLng; |
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} |
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/** |
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* @return LatLng |
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*/ |
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public function getNorthEast() |
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{ |
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return $this->_northEast; |
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} |
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/** |
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* @param LatLng $latLng |
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*/ |
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public function setNorthEast(LatLng $latLng) |
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{ |
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$this->_northEast = $latLng; |
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} |
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/** |
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* Initializes the class |
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* @throws \yii\base\InvalidConfigException |
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*/ |
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public function init() |
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{ |
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parent::init(); |
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if (empty($this->southWest) || empty($this->northEast)) { |
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throw new InvalidConfigException("'southEast' and/or 'northEast' cannot be empty"); |
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} |
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} |
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/** |
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* @return \yii\web\JsExpression the js initialization code of the object |
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*/ |
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public function encode() |
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{ |
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$southWest = $this->getSouthWest()->toArray(true); |
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$northEast = $this->getNorthEast()->toArray(true); |
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$js = "L.latLngBounds($southWest, $northEast)"; |
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if (!empty($this->name)) { |
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$js = "var $this->name = $js;"; |
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} |
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return new JsExpression($js); |
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} |
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/** |
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* Finds bounds of an array of LatLng instances |
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* |
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* @param LatLng[] $latLngs |
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* @param int $margin |
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* |
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* @return LatLngBounds |
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*/ |
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public static function getBoundsOfLatLngs(array $latLngs, $margin = 0) |
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{ |
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$min_lat = 1000; |
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$max_lat = -1000; |
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$min_lng = 1000; |
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$max_lng = -1000; |
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foreach ($latLngs as $latLng) { |
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if (!($latLng instanceof LatLng)) { |
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throw new InvalidParamException('"$latLngs" should be an array of LatLng instances.'); |
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} |
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/* @var $coord LatLng */ |
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$min_lat = min($min_lat, $latLng->lat); |
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$max_lat = max($max_lat, $latLng->lat); |
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$min_lng = min($min_lng, $latLng->lng); |
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$max_lng = max($max_lng, $latLng->lng); |
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} |
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if ($margin > 0) { |
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$min_lat = $min_lat - $margin * ($max_lat - $min_lat); |
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$min_lng = $min_lng - $margin * ($max_lng - $min_lng); |
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$max_lat = $max_lat + $margin * ($max_lat - $min_lat); |
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$max_lng = $max_lng + $margin * ($max_lng - $min_lng); |
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} |
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$bounds = new LatLngBounds( |
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[ |
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'southWest' => new LatLng(['lat' => $min_lat, 'lng' => $min_lng]), |
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'northEast' => new LatLng(['lat' => $max_lat, 'lng' => $max_lng]) |
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] |
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); |
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return $bounds; |
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} |
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} |
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2amigos /
yii2-leaflet-extension
