private async void OnEditButtonClick()
{
if (_selection == null)
{
return; // Selection missing
}
// Cancel previous edit
if (SceneEditHelper.IsActive)
{
SceneEditHelper.Cancel();
}
Esri.ArcGISRuntime.Geometry.Geometry editedGeometry = null;
try
{
// Edit selected geometry and set it back to the selected graphic
switch (_selection.GeometryType)
{
case GeometryType.Point:
editedGeometry = await SceneEditHelper.CreatePointAsync(
View);
break;
case GeometryType.Polyline:
_selection.SetHidden(); // Hide selected graphic from the UI
editedGeometry = await SceneEditHelper.EditPolylineAsync(
View,
_selection.SelectedGraphic.Geometry as Polyline);
break;
case GeometryType.Polygon:
_selection.SetHidden(); // Hide selected graphic from the UI
editedGeometry = await SceneEditHelper.EditPolygonAsync(
View,
_selection.SelectedGraphic.Geometry as Polygon);
break;
default:
break;
}
_selection.SelectedGraphic.Geometry = editedGeometry; // Set edited geometry to selected graphic
}
catch (TaskCanceledException tce)
{
// This occurs if draw operation is canceled or new operation is started before previous was finished.
Debug.WriteLine("Previous edit operation was canceled.");
}
finally
{
_selection.Unselect();
_selection.SetVisible(); // Show selected graphic from the UI
}
}
private async void DrawButton_Click(object sender, RoutedEventArgs e)
{
try
{
Geometry geometry = null;
Graphic graphic = null;
CancelButton.IsEnabled = true;
ClearButton.IsEnabled = false;
// Draw geometry and create a new graphic using it
switch ((DrawShape)DrawShapes.SelectedValue)
{
case DrawShape.Point:
geometry = await SceneEditHelper.CreatePointAsync(MySceneView);
graphic = new Graphic(geometry);
_pointsOverlay.Graphics.Add(graphic);
break;
case DrawShape.Polygon:
geometry = await SceneEditHelper.CreatePolygonAsync(MySceneView);
graphic = new Graphic(geometry);
_polygonsOverlay.Graphics.Add(graphic);
break;
case DrawShape.Polyline:
geometry = await SceneEditHelper.CreatePolylineAsync(MySceneView);
graphic = new Graphic(geometry);
_polylinesOverlay.Graphics.Add(graphic);
break;
default:
break;
}
}
catch (TaskCanceledException)
{
// This occurs if draw operation is canceled or new operation is started before previous was finished.
Debug.WriteLine("Previous draw operation was canceled.");
}
finally
{
CancelButton.IsEnabled = false;
ClearButton.IsEnabled = true;
}
}
private async void EditButton_Click(object sender, RoutedEventArgs e)
{
if (_selection == null)
{
return; // Selection missing
}
// Cancel previous edit
if (SceneEditHelper.IsActive)
{
SceneEditHelper.Cancel();
}
Geometry editedGeometry = null;
DrawButton.IsEnabled = false;
ClearButton.IsEnabled = false;
EditButton.IsEnabled = false;
CancelButton.IsEnabled = true;
try
{
// Edit selected geometry and set it back to the selected graphic
switch (_selection.GeometryType)
{
case GeometryType.Point:
editedGeometry = await SceneEditHelper.CreatePointAsync(
MySceneView);
break;
case GeometryType.Polyline:
_selection.SetHidden(); // Hide selected graphic from the UI
editedGeometry = await SceneEditHelper.EditPolylineAsync(
MySceneView,
_selection.SelectedGraphic.Geometry as Polyline);
break;
case GeometryType.Polygon:
_selection.SetHidden(); // Hide selected graphic from the UI
editedGeometry = await SceneEditHelper.EditPolygonAsync(
MySceneView,
_selection.SelectedGraphic.Geometry as Polygon);
break;
default:
break;
}
_selection.SelectedGraphic.Geometry = editedGeometry; // Set edited geometry to selected graphic
}
catch (TaskCanceledException)
{
// This occurs if draw operation is canceled or new operation is started before previous was finished.
Debug.WriteLine("Previous edit operation was canceled.");
}
finally
{
_selection.Unselect();
_selection.SetVisible(); // Show selected graphic from the UI
DrawButton.IsEnabled = true;
ClearButton.IsEnabled = true;
CancelButton.IsEnabled = false;
}
}