arcgis for js開發之路徑分析
//方法封裝 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;//對應道路圖層的服務圖層 var routeGraphicLayer = new GraphicLayer(map, layerName); routeGraphicLayer.clear();//每規划一次刪除對應圖層 var map = map; var wkid = 5555; //起點 var ptStart = new esri.geometry.Point(parseFloat(x1), parseFloat(y1), new esri.SpatialReference({ wkid: wkid })); //終點 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); //設置路徑樣式 var routeSymbol = new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_SOLID, new dojo.Color([1, 2, 3, 1], 5));//說明：rgb透明度，線寬 //起點、終點尾部樣式 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(); //設置參數 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); }); //設置路障參數 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("參數不全，無法分析"); 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); //連接路線起點、終點、對應的定位起點、終點 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("結果為空"); } },function(errpr){ alert(errpr); }); }