/**
* @param LocationContract $location
* @param int $target
* @return string
*/
public static function url(LocationContract $location, $target = WebMapServiceContract::Target_PC)
{
$title = urlencode($location->getTitle());
$lat = $location->getLatitude();
$lng = $location->getLongitude();
return "http://api.map.baidu.com/marker?location={$lat},{$lng}&title=" . $title . "&output=html&src=rollong|projects";
}
/**
* @param LocationContract $location
* @return $this
*/
public function setLocation(LocationContract $location)
{
$this->longitude = $location->getLongitude();
$this->latitude = $location->getLatitude();
$this->location_precision = $location->getPrecision();
$this->location_title = $location->getTitle();
$this->save();
return $this;
}
/**
* 距离(米)
* @param LocationContract $location
* @return float
*/
public function getDistance(LocationContract $location)
{
//将角度转为狐度
$radLat1 = deg2rad($this->getLatitude());
$radLat2 = deg2rad($location->getLatitude());
$radLng1 = deg2rad($this->getLongitude());
$radLng2 = deg2rad($location->getLongitude());
$a = $radLat1 - $radLat2;
//两纬度之差,纬度<90
$b = $radLng1 - $radLng2;
//两经度之差纬度<180
$s = 2 * asin(sqrt(pow(sin($a / 2), 2) + cos($radLat1) * cos($radLat2) * pow(sin($b / 2), 2))) * 6378137.0;
return $s;
}