Пример #1
0
        private async void ExecuteGPService()
        {
            //加载DEM并且缩放到该区域
            Map    map          = new Map(Basemap.CreateTopographic());
            string pathToRaster = @"D:\work\github\ExecuteGPK\LasVegasNED13_geoid1.tif";
            var    myRaster     = new Raster(pathToRaster);
            // create a RasterLayer using the Raster
            var newRasterLayer = new RasterLayer(myRaster);

            map.OperationalLayers.Add(newRasterLayer);
            Viewpoint viewPoint = new Viewpoint(36.131, -115.144, 800000);

            myMapView.Map = map;
            await myMapView.SetViewpointAsync(viewPoint, TimeSpan.FromSeconds(2));

            StartLocalServer();
            LocalGeoprocessingService localServiceGP = new LocalGeoprocessingService(@"D:\work\github\ExecuteGPK\InterpolateShape.gpk");

            localServiceGP.ServiceType = GeoprocessingServiceType.SynchronousExecute;
            // Handle the status changed event to check when it's loaded
            localServiceGP.StatusChanged += async(svc, args) =>
            {
                // If service started successfully, create a gp task
                if (args.Status == LocalServerStatus.Started)
                {
                    // Get the URL for the specific geoprocessing tool
                    var gpSvcUrl = (svc as LocalGeoprocessingService).Url.AbsoluteUri + "/InterpolateShape";
                    // Create the geoprocessing task
                    GeoprocessingTask       gpRouteTask = new GeoprocessingTask(new Uri(gpSvcUrl));
                    GeoprocessingParameters para        = new GeoprocessingParameters(GeoprocessingExecutionType.SynchronousExecute);
                    // Create the schema for a lines table (one text field to contain a name attribute)
                    var     inputFeatures = new FeatureCollectionTable(new List <Field>(), GeometryType.Polyline, myMapView.SpatialReference);
                    Feature inputFeature  = inputFeatures.CreateFeature();
                    var     geometry      = await myMapView.SketchEditor.StartAsync(SketchCreationMode.Polyline, false);

                    inputFeature.Geometry = geometry;
                    await inputFeatures.AddFeatureAsync(inputFeature);

                    para.Inputs.Add("inputLine", new GeoprocessingFeatures(inputFeatures));
                    para.ReturnZ = true;
                    para.OutputSpatialReference = myMapView.SpatialReference;

                    GeoprocessingJob routeJob = gpRouteTask.CreateJob(para);

                    try
                    {
                        // Execute analysis and wait for the results
                        GeoprocessingResult geoprocessingResult = await routeJob.GetResultAsync();

                        GeoprocessingFeatures resultFeatures               = geoprocessingResult.Outputs["outputLine"] as GeoprocessingFeatures;
                        IFeatureSet           interpolateShapeResult       = resultFeatures.Features;
                        Esri.ArcGISRuntime.Geometry.Polyline elevationLine = interpolateShapeResult.First().Geometry as Esri.ArcGISRuntime.Geometry.Polyline;
                        MapPoint startPoint = elevationLine.Parts[0].Points[0];
                        int      count      = elevationLine.Parts[0].PointCount;
                        MapPoint stopPoint  = elevationLine.Parts[0].Points[count - 1];
                        double   chazhi     = stopPoint.Z - startPoint.Z;
                        MessageBox.Show("终点的Z值为: " + stopPoint.Z.ToString() + ",起点的Z值为: " + startPoint.Z.ToString());
                    }
                    catch (Exception ex)
                    {
                        if (routeJob.Status == JobStatus.Failed && routeJob.Error != null)
                        {
                            MessageBox.Show("Executing geoprocessing failed. " + routeJob.Error.Message, "Geoprocessing error");
                        }
                        else
                        {
                            MessageBox.Show("An error occurred. " + ex.ToString(), "Sample error");
                        }
                    }
                    // Create parameters, run the task, process results, etc.
                    // ...
                }
            };
            // Start the local geoprocessing service
            await localServiceGP.StartAsync();
        }