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@@ -47,6 +47,46 @@ class mapUtil
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return $distance;
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}
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+ /**
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+ * 批量计算多个起点到一个终点的距离 (高德 V3 距离测量接口)
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+ * @param array $origins 起点坐标数组,例如:[['lng' => '116.481028', 'lat' => '39.989643'], ...]
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+ * @param string $toLnt 终点经度
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+ * @param string $toLat 终点纬度
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+ * @param int $type 路径计算的方式和方法 (0:直线距离, 1:驾车, 3:步行)
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+ * @return array
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+ */
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+ public static function calculateBatchDistance($origins, $toLnt, $toLat, $type = 1)
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+ {
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+ if (empty($origins)) {
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+ return [];
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+ }
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+
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+ // 将起点数组拼接成高德要求的格式: lng1,lat1|lng2,lat2
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+ $originStrs = [];
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+ foreach ($origins as $origin) {
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+ $originStrs[] = $origin['lng'] . ',' . $origin['lat'];
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+ }
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+ $originsParam = implode('|', $originStrs);
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+ $destinationParam = $toLnt . ',' . $toLat;
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+
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+ $domain = getenv('YII_ENV') == 'production' ? 'https://restapi.amap.com' : 'http://restapi.amap.com';
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+ $url = $domain . "/v3/distance?key=" . self::$thirdMapKey . "&origins={$originsParam}&destination={$destinationParam}&type={$type}";
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+
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+ $curl = new curl\Curl();
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+ $result = $curl->get($url);
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+ $result = \yii\helpers\Json::decode($result);
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+
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+ $distances = [];
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+ if (!empty($result['status']) && $result['status'] == 1 && !empty($result['results'])) {
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+ foreach ($result['results'] as $index => $res) {
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+ // 返回的结果顺序与传入的 origins 顺序一致
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+ $distances[$index] = $res['distance'] ?? 0;
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+ }
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+ }
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+
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+ return $distances;
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+ }
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+
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//逆地址解析,根据经纬度解析出中文地址 ssh
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public static function resolveLocation($lat, $long)
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{
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@@ -56,4 +96,61 @@ class mapUtil
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$result = Json::decode($result);
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return $result;
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}
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+
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+ /**
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+ * 坐标系转换:从 WGS84 转换为 GCJ-02
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+ * @param $lng
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+ * @param $lat
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+ * @return array
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+ */
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+ public static function wgs84ToGcj02($lng, $lat)
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+ {
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+ $lng = (float)$lng;
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+ $lat = (float)$lat;
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+ if (self::outOfChina($lng, $lat)) {
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+ return ['lng' => $lng, 'lat' => $lat];
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+ }
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+
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+ $a = 6378245.0;
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+ $ee = 0.00669342162296594323;
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+ $dLat = self::transformLat($lng - 105.0, $lat - 35.0);
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+ $dLng = self::transformLng($lng - 105.0, $lat - 35.0);
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+ $radLat = $lat / 180.0 * M_PI;
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+ $magic = sin($radLat);
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+ $magic = 1 - $ee * $magic * $magic;
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+ $sqrtMagic = sqrt($magic);
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+ $dLat = ($dLat * 180.0) / (($a * (1 - $ee)) / ($magic * $sqrtMagic) * M_PI);
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+ $dLng = ($dLng * 180.0) / ($a / $sqrtMagic * cos($radLat) * M_PI);
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+
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+ return ['lng' => $lng + $dLng, 'lat' => $lat + $dLat];
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+ }
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+
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+ private static function transformLat($lng, $lat)
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+ {
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+ $ret = -100.0 + 2.0 * $lng + 3.0 * $lat + 0.2 * $lat * $lat + 0.1 * $lng * $lat + 0.2 * sqrt(abs($lng));
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+ $ret += (20.0 * sin(6.0 * $lng * M_PI) + 20.0 * sin(2.0 * $lng * M_PI)) * 2.0 / 3.0;
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+ $ret += (20.0 * sin($lat * M_PI) + 40.0 * sin($lat / 3.0 * M_PI)) * 2.0 / 3.0;
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+ $ret += (160.0 * sin($lat / 12.0 * M_PI) + 320.0 * sin($lat * M_PI / 30.0)) * 2.0 / 3.0;
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+ return $ret;
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+ }
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+
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+ private static function transformLng($lng, $lat)
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+ {
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+ $ret = 300.0 + $lng + 2.0 * $lat + 0.1 * $lng * $lng + 0.1 * $lng * $lat + 0.1 * sqrt(abs($lng));
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+ $ret += (20.0 * sin(6.0 * $lng * M_PI) + 20.0 * sin(2.0 * $lng * M_PI)) * 2.0 / 3.0;
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+ $ret += (20.0 * sin($lng * M_PI) + 40.0 * sin($lng / 3.0 * M_PI)) * 2.0 / 3.0;
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+ $ret += (150.0 * sin($lng / 12.0 * M_PI) + 300.0 * sin($lng / 30.0 * M_PI)) * 2.0 / 3.0;
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+ return $ret;
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+ }
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+
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+ private static function outOfChina($lng, $lat)
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+ {
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+ if ($lng < 72.004 || $lng > 137.8347) {
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+ return true;
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+ }
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+ if ($lat < 0.8293 || $lat > 55.8271) {
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+ return true;
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+ }
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+ return false;
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+ }
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}
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