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 AreaButton_Click(object sender, RoutedEventArgs e)
{
var geometry = await SceneEditHelper.CreatePolygonAsync(View);
var graphic = new Graphic(geometry);
graphic.Symbol = new SimpleFillSymbol()
{
Color = getColorWithAlpha(SelectedColor.Color, DEFAULT_AREA_ALPHA), Outline = new SimpleLineSymbol()
{
Color = DEFAULT_POLYGON_BORFDER_COLOR
}
};
_polygonsOverlay.Graphics.Add(graphic);
}