SuperMap for JavaScript 中的最佳路径分析功能转换为三维中的最佳路径分析功能

Posted 2020-08-26

1、注意，要处理有交通网络分析服务

2、代码

var nodeArray = [],pathListIndex = 0,routeCompsIndex = 0,pathTime,style = {

               strokeColor: "#304DBE",

               strokeWidth: 3,

               pointerEvents: "visiblePainted",

               fill: false

           },

           styleGuidePoint = {

               pointRadius: 10,

               externalGraphic: path + "/SWimg/c1.png"

           };

       var url2="http://localhost:8090/iserver/services/transportationAnalyst-scene/rest/networkanalyst/[email protected]";

      

       //查找最优路径

        function findPath() {

       if(nodeArray.length>1)

           {

        alert("进来了。");

            var findPathService, parameter, analystParameter, resultSetting;

            resultSetting = new SuperMap.REST.TransportationAnalystResultSetting({

                returnEdgeFeatures: true,

                returnEdgeGeometry: true,

                returnEdgeIDs: true,

                returnNodeFeatures: true,

                returnNodeGeometry: true,

                returnNodeIDs: true,

                returnPathGuides: true,

                returnRoutes: true

            });

            analystParameter = new SuperMap.REST.TransportationAnalystParameter({

                resultSetting: resultSetting,

                //weightFieldName: "SHAPE_LENGTH"

            });

            parameter = new SuperMap.REST.FindPathParameters({

                isAnalyzeById: false,

                nodes: nodeArray,

                hasLeastEdgeCount: false,

                parameter: analystParameter

            });

            if (nodeArray.length <= 1) {

                alert("站点数目有误");

            }

            findPathService = new SuperMap.REST.FindPathService(url2, {

                eventListeners: { "processCompleted": processCompleted }

            });

            findPathService.processAsync(parameter);

           }else

               {

               alert("没有正常选点。");

               }

        }

        function processCompleted(findPathEventArgs) {

            var result = findPathEventArgs.result;

            allScheme(result);

        }

        function allScheme(result) {

            if (pathListIndex < result.pathList.length) {

                addPath(result);

            } else {

                pathListIndex = 0;

                //线绘制完成后会绘制关于路径指引点的信息

                addPathGuideItems(result);

            }

        }

        var pathFeature =  new SuperMap.Web.Core.Feature3D();

       

        var pointsttt = null;

        //以动画效果显示分析结果

        function addPath(result) { 

        pan();

        if(pointsttt == null)

            {

            pointsttt = new SuperMap.Web.Core.Point3Ds();

            }

        //style3d.set_bottomAltitude(2000);

            if (routeCompsIndex < result.pathList[pathListIndex].route.components.length) {

              

                 

                for (var k = 0; k < 2; k++) {

                    if (result.pathList[pathListIndex].route.components[routeCompsIndex + k]) {

                        //points.push(new SuperMap.Geometry.Point(result.pathList[pathListIndex].route.components[routeCompsIndex + k].x, result.pathList[pathListIndex].route.components[routeCompsIndex + k].y));

                        var point = new SuperMap.Web.Core.Point3D();

                        point.x=result.pathList[pathListIndex].route.components[routeCompsIndex + k].x;

                        point.y=result.pathList[pathListIndex].route.components[routeCompsIndex + k].y;

                        point.z=120;

                        pointsttt.add(point);

                    }

                }          

              

                //每隔0.001毫秒加载一条弧段

                pathTime = setTimeout(function () { addPath(result); }, 0.001);

                routeCompsIndex++;

            } else {

                clearTimeout(pathTime);

                var colorLine = new SuperMap.Web.Core.Color(255,0,0,255);

            var style3d = new SuperMap.Web.Core.Style3D();

            style3d.set_lineColor(colorLine);

            style3d.set_lineWidth(20);

            style3d.set_altitudeMode(2);

            var geoLinettt = new SuperMap.Web.Core.GeoLine3D();

            geoLinettt.addPart(pointsttt);

                pathFeature.set_geometry(geoLinettt);

                pathFeature.set_style3D(style3d);

                trackingLayer.add(pathFeature, routeCompsIndex);

                routeCompsIndex = 0;

                pathListIndex++;

                allScheme(result);

                pointsttt = null;

            }

        }

//再查出来的结果中插入符号

        function addPathGuideItems(result){

        

        }

       

        function xuanDian(){

         nodeArray=[];

             trackingLayer.removeAll(); //删除跟踪图层上的图像

        //设置控件的当前操作为自定义操作

            var xuanDian = new SuperMap.Web.UI.Action3Ds.xuanDian(sceneControl);

            sceneControl.set_sceneAction(xuanDian);

          

        }

 

        //通过继承SceneAction的方式来扩展用户的Action，继承方式采用框架提供的格式

        //扩展Action的构造函数

        SuperMap.Web.UI.Action3Ds.xuanDian = function (sceneControl) {

            SuperMap.Web.UI.Action3Ds.xuanDian.initializeBase(this);

 

            this._name = "xuanDian";

 

            this._sceneControl = sceneControl;

 

            //对应的场景操作类型为漫游

            this._type = SuperMap.Web.UI.Action3Ds.SceneActionType.PAN;

 

        };

 

        //扩展Action的属性和方法

        SuperMap.Web.UI.Action3Ds.xuanDian.prototype = {

            /*

            * 析构方法

            */

            dispose: function () {

                this._sceneControl = null;

            },

 

            /*

            * 鼠标单击方法

            */

            onMouseDown: function (e) {

                //通过事件对象查询到相关的信息

                var x = e.get_clientX();

                var y = e.get_clientY();

                var point = new SuperMap.Pixel(x, y);

                var point3d=sceneControl.pixelToGlobe(point,SuperMap.Web.Realspace.PixelToGlobeMode.TerrainAndModel);

                var point = new SuperMap.Geometry.Point(point3d.x,point3d.y);

                nodeArray.push(point);

                DrawPicForz(point3d.x,point3d.y,point3d.z,"fx");

            }

        };

        SuperMap.Web.UI.Action3Ds.xuanDian.registerClass(‘SuperMap.Web.UI.Action3Ds.xuanDian‘, SuperMap.Web.UI.Action3Ds.SceneAction, Sys.IDisposable);

//z在三维场景中添加一个符号

    function DrawPicForz(x, y,z,type){

        var geometry = new SuperMap.Web.Core.GeoPoint3D(

                new SuperMap.Web.Core.Point3D(x, y,z));//原来的高度是180

        var feature3D = new SuperMap.Web.Core.Feature3D();

 

        //设置feature3D中的style3D属性

        var style = new SuperMap.Web.Core.Style3D();

        var pictureurl = null;

        var geoPlacemark = new SuperMap.Web.Core.GeoPlacemark();

         if(type == "fx"){

            pictureurl = path + "/SWimg/water1.png";

        }

        //style.set_altitudeMode("CLAMP_TO_GROUND");

        style.set_altitudeMode(SuperMap.Web.Realspace.AltitudeMode.ABSOLUTE);

        style.set_markerFile(pictureurl);

        var instanceVar = new SuperMap.Web.Core.TextStyle3D();

        instanceVar.set_backColor(new SuperMap.Web.Core.Color(255, 0, 0, 255));

        instanceVar.set_fontScale(3);

        feature3D.set_textStyle3D(instanceVar);

 

        //创建Geoplacemark

        geoPlacemark.set_geometry(geometry);

        feature3D.set_geometry(geoPlacemark);

        feature3D.set_style3D(style);

 

        var trackingLayer = scene.get_trackingLayer3D();

        //跟踪图层设置为可见

        trackingLayer.set_isVisible(true);

        trackingLayer.add(feature3D, "daohang");

    }