I'm using angular google maps and need help getting the new bounds changed from the event fired

问题

This is my current code which is called when bounds are changed and works:

 scope.boundsChanged= function(arg){
       console.log(arg);                       
 };

I basically need the new array of lat and lng when this function above is called. I'm unsure are the retrieve it.

I'm using angular version 1 with JavaScript in a directive using a templateUrl.

Img of console log of bounds arg:

回答1:

I dont know exactly what is returned in the boundsChanged() function, but assuming changed bounds are returned in the function, method is the same to get lat, lng coordinates:

scope.boundsChanged= function(arg){

    //assuming changed bounds is returned as the 'arg'
    var polygonBounds = arg;
    var coordinates = [];

    for (var i = 0; i < polygonBounds.length; i++)
    {
        coordinates.push({lat: polygonBounds.getAt(i).lat(), lng: polygonBounds.getAt(i).lng()});
        coordinates.push(new google.maps.LatLng(polygonBounds.getAt(i).lat(), polygonBounds.getAt(i).lng()));
    }

   console.log(arg);                       
};

来源：https://stackoverflow.com/questions/36447127/im-using-angular-google-maps-and-need-help-getting-the-new-bounds-changed-from