google maps api v3 - 最近的街景

Question

如果某个地点没有街景,我想找到最近的街景视图吗？

我能想到的唯一方法是.

radius = 0;
noOfPoints = 3;

while(radius < 10 miles){

    radius = radius + 0.2 miles
    points = calculate 4 * noOfPoints at this radius

    loop(points)
    {
       if(streetview visibile for point)
          bingo, break;
    }

    break if bingo;

    noOfPOints = noOfPoints+1;

}

但即使我想在10英里范围内找到街景,这也是非常昂贵的,我希望能在这些点之一找到街景,也就是说,我可能会错过街景的实际点.

有人可以指导我走向更好的方法吗？

Answer 1

您可以尝试使用StreetViewService来帮助您查找最近的现有街道视图:

var astorPlace = new google.maps.LatLng(40.729884, -73.990988);
var webService = new google.maps.StreetViewService();  
/**Check in a perimeter of 50 meters**/ 
var checkaround = 50;
/** checkNearestStreetView is a valid callback function **/

webService.getPanoramaByLocation(astorPlace,checkaround ,checkNearestStreetView);

function checkNearestStreetView(panoData){
    if(panoData){

         if(panoData.location){

            if(panoData.location.latLng){
                /**Well done you can use a nearest existing street view coordinates**/
            }
        }
    }
    /** Else do something... **/
}