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  • arcgis for js开发之路径分析

    arcgis for js开发之路径分析


    //方法封装
    function routeplan(x1, x2, y1, y2, barrierPathArray, isDraw, callback) {
        require([
            "esri/symbol/SimpleLineSymbol",
            "esri/Color",
            "esri/tasks/RouteTask",
            "esri/tasks/FreatureSet",
            "esri/tasks/RouteParameters"
        ], function () {
            var routeServerUrl = url;//对应道路图层的服务图层
            var routeGraphicLayer = new GraphicLayer(map, layerName);
            routeGraphicLayer.clear();//每规划一次删除对应图层
            var map = map;
            var wkid = 5555;
            //起点
            var ptStart = new esri.geometry.Point(parseFloat(x1), parseFloat(y1), new esri.SpatialReference({ wkid: wkid }));
            //终点
            var ptEnd = new esri.geometry.Point(parseFloat(x2), parseFloat(y2), new esri.SpatialReference({ wkid: wkid }));
            var startPtGra = new esri.Graphic(ptStart);
            var endPtGra = new esri.Graphic(ptEnd);
            //设置路径样式
            var routeSymbol = new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_SOLID, new dojo.Color([1, 2, 3, 1], 5));//说明:rgb透明度,线宽
            //起点、终点尾部样式
            var routeSymbolDef = new esri.symbol.SimpleLineSymbol(new esri.symbol.SimpleLineSymbol.STYLE_SOLID, new dojo.Color([2, 3, 4, 5], 2));
            var routeTask = new esri.tasks.RouteTask(routeServerUrl);
            var routeParams = new esri.tasks.routeParameters();
            //设置参数
            routeParams.outSpatialReference = { wkid: wkid };
            routeParams.retuenDirection = true;
            routeParams.directionsLengthUnits = esri.Units.METERS;
            routeParams.stops = new esri.tasks.FeatureSet();
            routeParams.stops.features.push(startPtGra);
            routeParams.stops.features.push(endPtGra)
            route = JSON.stringify(barrierPathArray);
            var temp = jQuery.parseJSON(route);
            var array = [];
            $.each(temp, function (i, v) {
                var point = [v[0], item[1]];
                array.push(point);
            });
            //设置路障参数
            if (array.length > 0) {
                var barrierRoute = new esri.geometry.Polyline(new esri.SpatialReference({ wkid: wkid }));
                var barriersGraphic = new esri.Graphic(barrierRoute);
                routeParams.PolylineBarriers = new esri.tasks.FeatureSet();
                routeParams.PolylineBarriers.features.push(barriersGraphic);
            }
            if (routeParams.stops.features.length == 0) {
                alert("参数不全,无法分析");
                return;
            }
            routeTask.solve(routeParams,function(solveResult){
                if(callback){
                    callback(solveResult);
                }
                var routeResults=solveResult.routeResults;
                var res=routeResults.length;
                if9(isDraw=="false"){
                    return;
                }
                if(res>0){
                    for(var i=0;i<res;i++){
                        var graphicroute=routeResults[i];
                        var graphic=graphicroute.route;
                        graphic.setSymbol(routeSymbol);
                        routeGraphicLayer.add(graphic);
                        //连接路线起点、终点、对应的定位起点、终点
                        var paths=graphic.geometry.paths[0];
                        var routeStr=paths[0];
                        var routeEnd=paths[paths.length-1];
                        var routeStrline=new esri.geometry.Polyline([[x1,y1],routeStr],new esri.SpatialReference({wkid:wkid}));
                        var routeEndline=new esri.geometry.Polyline([[x2,y2],routeEnd],new esri.SpatialReference({wkid:wkid}));
                        var strlinegraphic=new esri.Graphic(routeStrline,routeSymbolDef);
                        var endlinegraphic=new esri.Graphic(routeEndline,routeSymbolDef);
                        routeGraphicLayer.add(strlinegraphic);
                        routeGraphicLayer.add(endlinegraphic);
                    }
                }
                else{
                    alert("结果为空");
                }
            },function(errpr){
                alert(errpr);
            });      
    }
    
        
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  • 原文地址:https://www.cnblogs.com/dongteng/p/6545422.html
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