腾讯地图 获取各种情况的总距离

引用腾讯地图js：<script charset="utf-8" src="http://map.qq.com/api/js?v=2.exp&libraries=geometry"></script>

线路距离：

var map,

　　directionsService = new qq.maps.DrivingService({           

　　complete: function (response) {              

　　var start = response.detail.start,                  

　　end = response.detail.end;             

　　directions_routes = response.detail.routes;     

　　var distance = directions_routes[0].distance;//总距离      

       }       

  }),directions_routes;

　　function sosoDistance(start_lat, start_lng, end_lat, end_lng) {        

　　//LEAST_TIME   最少时间        

　　//LEAST_DISTANCE   最短距离        

　　//AVOID_HIGHWAYS     避开高速        

　　//REAL_TRAFFIC     实时路况        

　　//PREDICT_TRAFFIC     预测路况        

　　directionsService.setPolicy(qq.maps.DrivingPolicy["LEAST_DISTANCE"]);        

　　directionsService.search(new qq.maps.LatLng(start_lat, start_lng),

　　new qq.maps.LatLng(end_lat, end_lng));    

　　}

----------------------------我是漂亮的分割线-------------------------------------------------

直线距离：

var start = new qq.maps.LatLng(start_lat, start_lng), end = new qq.maps.LatLng(end_lat, end_lng);

            var total = Math.round(qq.maps.geometry.spherical.computeDistanceBetween(start, end) * 10) / 10;