// 起终点位置
let startPt: RouteNodeInfo = new RouteNodeInfo()
let endPt: RouteNodeInfo = new RouteNodeInfo()
startPt.location = new LatLng(40.048241,116.296165)
endPt.location = new LatLng(40.04721,116.316372)
    
// 构造 RoutePlanOption ，设置起终点
let param: RoutePlanOption = new RoutePlanOption().startNodeInfo(startPt).endNodeInfo(endPt)

service.routePlanService().routePlanWithRouteNode(param,new Object({
    //引擎开始路线规划
    onRoutePlanStart: () => {
    },
    // 正常规划成功
    onRoutePlanSuccess: () => {
        // 展示路线
        service.routePlanService().displayRoutePlanResult()
    },
    // 正常规划失败
    onRoutePlanFail: (error: RoutePlanError) => {
    }
}) as IRoutePlanListener)