Latest Contributions by RehmSoftware

Hi, I know that I can access the currently selected entities when the user clicks on custom button via Map.GetSelection. But let's say that I need the user to select a polyline somewhere along the way. Probably even from a wpf window because I need to get some information like length or num vertices from some polyline. Like this: When the user clicks on "From Polyline", he can select a polyline and my code can determine the number of segments of that polyline and the result is displayed in the textbox. Is that actually possible? And if yes, is there a best practice for doing this? What I'm basically looking for is a "pick mechanic" just like AutoCAD offers. And since I'm coming from an AutoCAD background, I've been doing this a lot and I figured it should be doable in ArcGIS Pro as well 🙂 Thanks in advance and Best Regards Christian ... View more

Hello, I'm currently testing the performance of ArcGis Pro regarding how fast it is to create and draw polylines or polygons (the reason is that I'm comparing the performance to AutoCAD in order to find out whether we could port our software product to the ArcGis Pro platform). I came up with a sample code that draws about 10.000 triangles on an existing feature layer. But I was rather underwhelmed by the performance as it took about 24 seconds on my machine (i7-3930k, 24GB RAM, nVidia GTX 650 Ti). The same task in AutoCAD only took 0.1 seconds... But since I'm new to programming with ArcGis I might have made a stupid mistake that slows down my code a lot. So I'd be happy if someone with more knowledge could look over it and give me some hints whether I'm doing something wrong. This is my code: using System; using System.Collections.Generic; using System.Diagnostics; using System.Linq; using System.Text; using System.Threading.Tasks; using ArcGIS.Core.Data; using ArcGIS.Core.Geometry; using ArcGIS.Desktop.Core; using ArcGIS.Desktop.Editing; using ArcGIS.Desktop.Framework; using ArcGIS.Desktop.Framework.Contracts; using ArcGIS.Desktop.Framework.Dialogs; using ArcGIS.Desktop.Framework.Threading.Tasks; using ArcGIS.Desktop.Mapping;   namespace ProAppModule1 {     internal class createPolylines : Button {         protected override async void OnClick() {             var sw = new Stopwatch();             sw.Start();             await this.DrawPolylines();             sw.Stop();             MessageBox.Show(String.Format("Time elapsed: {0:t}", sw.Elapsed));         }           private Task<bool> DrawPolylines() {             var activeMapView = MapView.Active;             var extent = activeMapView.Extent;               //Draw about 10000 triangles. Use sqrt to have the same number of triangles in width and height even though we'll end up with more than 10000 triangles in the end             int numTriangles = 10000;             int rows, cols;             rows = cols = (int)Math.Ceiling(Math.Sqrt(numTriangles));               double triangleWidth = extent.Width / cols;             double triangleHeight = extent.Height / rows;               var polylineFeatureLayer = this.GetFeatureLayerByName(activeMapView.Map, "My_Polyline");             return QueuedTask.Run(() => {                 var featureClass = polylineFeatureLayer.GetTable() as FeatureClass;                 var polylineDefinition = featureClass.GetDefinition() as FeatureClassDefinition;                 var spatialReference = polylineDefinition.GetSpatialReference();                   var createOperation = new EditOperation();                 createOperation.Name = "Draw Polylines";                 createOperation.SelectNewFeatures = false;                   var coordinates = new Coordinate[4];                 double x = extent.XMin;                 double y = extent.YMin;                 for (int i = 0; i < rows; ++i) {                     for (int j = 0; j < cols; ++j) {                         coordinates[0] = new Coordinate(x, y, 0.0);                         coordinates[1] = new Coordinate(x + triangleWidth, y, 0.0);                         coordinates[2] = new Coordinate(x + triangleWidth, y + triangleHeight, 0.0);                         coordinates[3] = coordinates[0];                           var polyline = PolylineBuilder.CreatePolyline(coordinates, spatialReference);                         createOperation.Create(polylineFeatureLayer, polyline);                         x += triangleWidth;                     }                       x = extent.XMin;                     y += triangleHeight;                 }                   return createOperation.ExecuteAsync();             });         }           private FeatureLayer GetFeatureLayerByName(Map map, string layerName) {             var featureLayers = map.GetLayersAsFlattenedList().OfType<FeatureLayer>();             foreach (var layer in featureLayers) {                 if (layer.Name.Equals(layerName, StringComparison.CurrentCultureIgnoreCase))                     return layer;             }               return null;         }     } } Thanks in advance! Christian ... View more