private async void _myDrawObject_DrawComplete(object sender, DrawEventArgs e)
{
if (e.Geometry == null)
{
MapApplication.Current.HideWindow(_elevationProfileDialog);
return;
}
try
{
_myDrawObject.IsEnabled = false;
ProfileCalculationBusyIndicator.Visibility = Visibility.Visible;
_lineGraphicLayer.Graphics[0].Geometry = e.Geometry;
if (_cts != null)
_cts.Cancel();
_cts = new CancellationTokenSource();
Geoprocessor geoprocessorTask = new Geoprocessor(
"http://elevation.arcgis.com/arcgis/rest/services/Tools/ElevationSync/GPServer/Profile");
List<GPParameter> parameters = new List<GPParameter>();
parameters.Add(new GPFeatureRecordSetLayer("InputLineFeatures", e.Geometry));
parameters.Add(new GPString("returnM", "true"));
parameters.Add(new GPString("returnZ", "true"));
GPExecuteResults results = await geoprocessorTask.ExecuteTaskAsync(parameters, _cts.Token);
if (results == null || results.OutParameters.Count == 0 || (results.OutParameters[0] as GPFeatureRecordSetLayer).FeatureSet.Features.Count == 0)
{
MessageBox.Show("Fail to get elevation data. Draw another line");
return;
}
ESRI.ArcGIS.Client.Geometry.Polyline elevationLine =
(results.OutParameters[0] as GPFeatureRecordSetLayer).FeatureSet.Features[0].Geometry
as ESRI.ArcGIS.Client.Geometry.Polyline;
foreach (MapPoint p in elevationLine.Paths[0])
{
p.M = Math.Round(p.M / 1000, 2);
p.Z = Math.Round(p.Z, 2);
}
MapPoint lastPoint = elevationLine.Paths[0][elevationLine.Paths[0].Count - 1];
_elevationProfileDialog.ProfileDistance = lastPoint.M;
_elevationProfileDialog.ProfileData = elevationLine.Paths[0];
var top = ((FrameworkElement)Application.Current.RootVisual).ActualHeight - 400;
if (MapApplication.Current.IsEditMode)
top -= 20;
MapApplication.Current.ShowWindow("", _elevationProfileDialog, false, (s, a) => ClearLayers(), null, WindowType.Floating, top);
}
catch (Exception ex)
{
if (ex is ServiceException)
{
MessageBox.Show(String.Format("{0}: {1}", (ex as ServiceException).Code.ToString(),
(ex as ServiceException).Details[0]), "Error", MessageBoxButton.OK);
return;
}
}
finally
{
ProfileCalculationBusyIndicator.Visibility = Visibility.Collapsed;
}
}
async void _myDrawObject_DrawComplete(object sender, DrawEventArgs e)
{
if (e.Geometry == null)
{
ChartContainer.Visibility = System.Windows.Visibility.Collapsed;
return;
}
try
{
_myDrawObject.IsEnabled = false;
this.Cursor = Cursors.Wait;
_lineGraphicLayer.Graphics[0].Geometry = e.Geometry;
if (_cts != null)
_cts.Cancel();
_cts = new CancellationTokenSource();
Geoprocessor geoprocessorTask = new Geoprocessor(
"http://elevation.arcgis.com/arcgis/rest/services/Tools/ElevationSync/GPServer/Profile");
List<GPParameter> parameters = new List<GPParameter>();
parameters.Add(new GPFeatureRecordSetLayer("InputLineFeatures", e.Geometry));
parameters.Add(new GPString("returnM", "true"));
parameters.Add(new GPString("returnZ", "true"));
GPExecuteResults results = await geoprocessorTask.ExecuteTaskAsync(parameters, _cts.Token);
if (results == null || results.OutParameters.Count == 0 || (results.OutParameters[0] as GPFeatureRecordSetLayer).FeatureSet.Features.Count == 0)
{
MessageBox.Show("Fail to get elevation data. Draw another line");
return;
}
ESRI.ArcGIS.Client.Geometry.Polyline elevationLine =
(results.OutParameters[0] as GPFeatureRecordSetLayer).FeatureSet.Features[0].Geometry
as ESRI.ArcGIS.Client.Geometry.Polyline;
foreach (MapPoint p in elevationLine.Paths[0])
{
p.M = Math.Round(p.M / 1000, 2);
p.Z = Math.Round(p.Z, 2);
}
MapPoint lastPoint = elevationLine.Paths[0][elevationLine.Paths[0].Count - 1];
lblDistance.Text = string.Format("Total Distance {0} Kilometers", lastPoint.M.ToString());
(ElevationChart.Series[0] as LineSeries).ItemsSource = elevationLine.Paths[0];
ChartContainer.Visibility = System.Windows.Visibility.Visible;
}
catch (Exception ex)
{
if (ex is ServiceException)
{
MessageBox.Show(String.Format("{0}: {1}", (ex as ServiceException).Code.ToString(),
(ex as ServiceException).Details[0]), "Error", MessageBoxButton.OK);
return;
}
}
finally
{
this.Cursor = Cursors.Arrow;
}
}