Creating Buffer Based on User Defined Point

jjackson229 — Wed, 20 Mar 2024 20:01:27 GMT

Hi everyone! I am super new to SDK, so there may be an obvious answer. Is there a way for a user to select a point on a map and then that point is buffered a set distance? I'm using Visual Studio 2022, and the ArcGIS Pro Module Add-in (C#).

I've looked at the pro snippets to buffer a MapPoint on the GitHub, but I'm just not connecting the dots on it. I've been able to set it so a user can select a point on the map and it shows the coordinates in a message box, and have an initial message box pop up prompting the user to select a point, I've just been running into issues getting a buffer to work. I've included my code down below, thanks for any advice!

namespace Tester { internal class MapTool1 : MapTool { public MapTool1() { IsSketchTool = true; SketchType = SketchGeometryType.Point; SketchOutputMode = SketchOutputMode.Map; } // This happens before the tool is run // protected override Task OnToolActivateAsync(bool active) { MessageBox.Show( "Please Select a Point on the Map!" ); MapPoint pt = MapPointBuilderEx.CreateMapPoint(1.0, 1.0, SpatialReferences.WGS84); Geometry ptBuffer = GeometryEngine.Instance.Buffer(pt, 5.0); Polygon buffer = ptBuffer as Polygon; return base.OnToolActivateAsync(active); } //This happens when the user clicks and begins to use the tool protected override Task<bool> OnSketchCompleteAsync(Geometry geometry) { MessageBox.Show( "North: " + geometry.Extent.YMax.ToString() + "\n" + "South: " + geometry.Extent.YMin.ToString() + "\n" + "East: " + geometry.Extent.XMax.ToString() + "\n" + "West: " + geometry.Extent.XMin.ToString() ); MapPoint pt = MapPointBuilderEx.CreateMapPoint(1.0, 1.0, SpatialReference.WGS84); Geometry ptBuffer = GeometryEngine.Instance.Buffer(pt, 5.0); Polygon buffer = ptBuffer as Polygon; return base.OnSketchCompleteAsync(geometry); } } }

Re: Creating Buffer Based on User Defined Point

jjackson229 — Thu, 21 Mar 2024 15:42:10 GMT

As an update - I managed to get this working this morning. I found the code snippet here - https://github.com/Esri/arcgis-pro-sdk-community-samples/blob/master/Geoprocessing/GeoprocessingExecuteAsync/BufferGeometryTool.cs

I updated the script and it looks like this now and seems to be working like I need it to!

namespace Tester { internal class MapTool1 : MapTool { public MapTool1() { IsSketchTool = true; SketchType = SketchGeometryType.Point; SketchOutputMode = SketchOutputMode.Map; } // This happens before the tool is run // protected override Task OnToolActivateAsync(bool active) { MessageBox.Show( "Please Select a Point on the Map!" ); return base.OnToolActivateAsync(active); } //This happens when the user clicks and begins to use the tool protected override async Task<bool> OnSketchCompleteAsync(Geometry geometry) { var valueArray = await QueuedTask.Run(() => { var g = new List<object>() { geometry, }; // Creates a 2 mile buffer around the geometry object // null indicates a default output name is used return Geoprocessing.MakeValueArray(g, null, @"2 Miles"); }); await Geoprocessing.ExecuteToolAsync("analysis.Buffer", valueArray); return true; } } }

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Creating Buffer Based on User Defined Point

Re: Creating Buffer Based on User Defined Point