topic Re: Add/delete vertex when editing a geometry in .NET Maps SDK Questions

Add/delete vertex when editing a geometry

CraigStephens1 — Fri, 04 Aug 2017 17:23:23 GMT

Hopefully this is an easy question to answer.

After putting a polygon into edit mode, what is the action (mouse and/or key strokes) to add a vertex and delete a vertex?

I get how to move a vertex and move/scale/rotate the polygon, but adding/deleting a vertex is being elusive.

mapView.Editor.EditorConfiguration.AllowAddVertex = true;

mapView.Editor.EditorConfiguration.AllowDeleteVertex = true;

return await mapView.Editor.EditGeometryAsync(geometry);

Using ArcGIS Runtime Desktop API for Microsoft .Net version 10.2.6.0

Re: Add/delete vertex when editing a geometry

JenniferNery — Sat, 11 Dec 2021 18:22:13 GMT

AddVertex and DeleteVertex commands can be activated using buttons just like Undo/Redo/Cancel/Complete commands. They are only enabled for Polyline/Polygon geometries though with provided CommandParameter. DeleteVertex will act on selected vertex (red highlight) and/or given index.

            <Button Content="Undo"
                    Command="{Binding ElementName=MyMapView, Path=Editor.Undo}" />
            <Button Content="Redo"
                    Command="{Binding ElementName=MyMapView, Path=Editor.Redo}" />
            <Button Content="Delete"
                    Command="{Binding ElementName=MyMapView, Path=Editor.DeleteVertex}" />
            <Button Content="Add"
                    Command="{Binding ElementName=MyMapView, Path=Editor.AddVertex}" />
            <Button Content="Cancel"
                    Command="{Binding ElementName=MyMapView, Path=Editor.Cancel}" />
            <Button Content="Complete"
                    Command="{Binding ElementName=MyMapView, Path=Editor.Complete}" />‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Programmatically, you can invoke them using the following code:

            // `mapPoint` will be added after selected vertex
            if (MyMapView.Editor.AddVertex.CanExecute(mapPoint))
                MyMapView.Editor.AddVertex.Execute(mapPoint);
            // `index` to delete specific vertex or
            // `null` to delete selected vertex
            if (MyMapView.Editor.DeleteVertex.CanExecute(index))
                MyMapView.Editor.DeleteVertex.Execute(index);‍‍‍‍‍‍‍‍‍‍‍‍‍‍

You may also use Polyline/PolygonBuilder which also has methods for Add/RemovePoint.

Re: Add/delete vertex when editing a geometry

CraigStephens1 — Tue, 08 Aug 2017 00:28:29 GMT

Thanks for your response, Jennifer. I understand your example, but that's not what I'm looking for.

Refer to the image I attached in my question. I want to deal with that edit object directly on the map. I figured out that the white circles in between the vertices are how you add a vertex. Click on one, drag it around, and release and you are rewarded with a new vertex and extra white circles to drag around. By setting AllowAddVertex = false, the white circles go away.

mapView.Editor.EditorConfiguration.AllowAddVertex = false;

return await mapView.Editor.EditGeometryAsync(geometry);

When AllowDeleteVertex = true, what do I do with the edit object on the map to delete a vertex?

Re: Add/delete vertex when editing a geometry

CraigStephens1 — Thu, 10 Aug 2017 12:18:47 GMT

Anyone?