// Continuosly accepts new points from the user
private async Task DrawPoints()
{
try
{
await MyMapView.LayersLoadedAsync();
var point = await MyMapView.Editor.RequestPointAsync();
// reset graphics layers if we've already created a convex hull polygon
if (_convexHullGraphicsOverlay.Graphics.Count > 0)
{
_inputGraphicsOverlay.Graphics.Clear();
_convexHullGraphicsOverlay.Graphics.Clear();
}
_inputGraphicsOverlay.Graphics.Add(new Graphic(point, _pointSymbol));
if (_inputGraphicsOverlay.Graphics.Count > 2)
{
btnConvexHull.IsEnabled = true;
}
await DrawPoints();
}
catch (TaskCanceledException) { }
catch (Exception ex)
{
MessageBox.Show("Error adding points: " + ex.Message, "Convex Hull Sample");
}
}
// Continuosly accept polygons from the user and calculate label points
private async Task CalculateLabelPointsAsync()
{
try
{
await MyMapView.LayersLoadedAsync();
while (MyMapView.Extent != null)
{
if (MyMapView.Editor.IsActive)
MyMapView.Editor.Cancel.Execute(null);
//Get the input polygon geometry from the user
var poly = await MyMapView.Editor.RequestShapeAsync(DrawShape.Polygon, ((SimpleRenderer)_labelOverlay.Renderer).Symbol);
if (poly != null)
{
//Add the polygon drawn by the user
_labelOverlay.Graphics.Add(new Graphic(poly));
//Get the label point for the input geometry
var labelPoint = GeometryEngine.LabelPoint(poly);
if (labelPoint != null)
{
_labelOverlay.Graphics.Add(new Graphic(labelPoint, _pictureMarkerSymbol));
}
}
}
}
catch (TaskCanceledException) { }
catch (Exception ex)
{
var _x = new MessageDialog("Label Point Error: " + ex.Message, "Sample Error").ShowAsync();
}
}
// Zoom to combined extent of the group layer that contains all hydrographic layers
private async void ZoomToHydrographicLayers()
{
try
{
// wait until all layers are loaded
await MyMapView.LayersLoadedAsync();
// Get group layer from Map and set list items source
_hydrographicGroupLayer = MyMapView.Map.Layers.OfType <GroupLayer>().First();
s57CellList.ItemsSource = _hydrographicGroupLayer.ChildLayers;
s57CellList.SelectedIndex = 0;
Envelope extent = _hydrographicGroupLayer.ChildLayers.First().FullExtent;
// Create combined extent from child hydrographic layers
foreach (var layer in _hydrographicGroupLayer.ChildLayers)
{
extent = extent.Union(layer.FullExtent);
}
// Zoom to full extent
await MyMapView.SetViewAsync(extent);
// Enable controls
addCellButton.IsEnabled = true;
zoomToSelectedButton.IsEnabled = true;
removeSelectedCellsButton.IsEnabled = true;
}
catch (Exception ex)
{
MessageBox.Show("Error occured : " + ex.Message, "Sample error");
}
}
/// <summary>
/// 鹰眼地图显示调整
/// </summary>
/// <returns></returns>
private async Task AddSingleGraphicAsync()
{
try
{
await MyMapView.LayersLoadedAsync();
var graphicsOverlay = overviewMap.GraphicsOverlays["overviewOverlay"];
Symbol symbol = symbol = Resources["RedFillSymbol"] as Symbol;
while (true)
{
var geometry = await overviewMap.Editor.RequestShapeAsync(DrawShape.Rectangle, symbol);
graphicsOverlay.Graphics.Clear();
var graphic = new Graphic(geometry, symbol);
graphicsOverlay.Graphics.Add(graphic);
var viewpointExtent = geometry.Extent;
await MyMapView.SetViewAsync(viewpointExtent);
}
}
catch (TaskCanceledException)
{
// Ignore cancellations from selecting new shape type
}
catch (Exception ex)
{
}
}
// Zoom to combined extent of the group layer that contains all hydrographic layers
private async void ZoomToHydrographicLayers()
{
try
{
// wait until all layers are loaded
await MyMapView.LayersLoadedAsync();
var extent = _hydrographicLayers.ChildLayers.First().FullExtent;
// Create combined extent from child hydrographic layers
foreach (var layer in _hydrographicLayers.ChildLayers)
{
extent = extent.Union(layer.FullExtent);
}
// Zoom to full extent
await MyMapView.SetViewAsync(extent);
SearchArea.IsEnabled = true;
}
catch (System.Exception ex)
{
MessageBox.Show(ex.Message);
return;
}
}
// Load data - enable functionality after layers are loaded.
private async void MyMapView_ExtentChanged(object sender, EventArgs e)
{
try
{
MyMapView.ExtentChanged -= MyMapView_ExtentChanged;
// Get group layer from Map and set list items source
_hydrographicGroupLayer = MyMapView.Map.Layers.OfType <GroupLayer>().First();
// Check that sample data is downloaded to the client
await CreateHydrographicLayerAsync(LAYER_1_PATH);
await CreateHydrographicLayerAsync(LAYER_2_PATH);
// Wait until all layers are loaded
var layers = await MyMapView.LayersLoadedAsync();
Envelope extent = _hydrographicGroupLayer.ChildLayers.First().FullExtent;
// Create combined extent from child hydrographic layers
foreach (var layer in _hydrographicGroupLayer.ChildLayers)
{
extent = extent.Union(layer.FullExtent);
}
// Zoom to full extent
await MyMapView.SetViewAsync(extent);
}
catch (Exception ex)
{
var _x = new MessageDialog(ex.Message, "S57 Display Properties Sample").ShowAsync();
}
}
// Create three List<Graphic> objects with random graphics to serve as layer GraphicsSources
private async void CreateGraphics()
{
try
{
await MyMapView.LayersLoadedAsync();
_graphicsSources = new List<List<Graphic>>()
{
new List<Graphic>(),
new List<Graphic>(),
new List<Graphic>()
};
foreach (var graphicList in _graphicsSources)
{
for (int n = 0; n < 10; ++n)
{
graphicList.Add(CreateRandomGraphic());
}
}
_graphicSourceIndex = 0;
_graphicsLayer.GraphicsSource = _graphicsSources[_graphicSourceIndex];
}
catch (Exception ex)
{
var _x = new MessageDialog("Exception occurred : " + ex.ToString(), "Sample error").ShowAsync();
}
}
// Load data - enable functionality after layers are loaded.
private async void MyMapView_ExtentChanged(object sender, EventArgs e)
{
try
{
MyMapView.ExtentChanged -= MyMapView_ExtentChanged;
// Get group layer from Map and set list items source
_hydrographicGroupLayer = MyMapView.Map.Layers.OfType <GroupLayer>().First();
// Check that sample data is downloaded to the client
await CreateHydrographicLayerAsync(LAYER_1_PATH);
await CreateHydrographicLayerAsync(LAYER_2_PATH);
// Wait until all layers are loaded
var layers = await MyMapView.LayersLoadedAsync();
// Set item sources
s57CellList.ItemsSource = _hydrographicGroupLayer.ChildLayers;
s57CellList.SelectedIndex = 0;
// Zoom to hydrographic layer
await MyMapView.SetViewAsync(_hydrographicGroupLayer.FullExtent);
}
catch (Exception ex)
{
var _x = new MessageDialog(ex.Message, "S57 Cell Info Sample").ShowAsync();
}
}
// Zoom to combined extent of the group layer that contains all hydrographic layers
private async void ZoomToHydrographicLayers()
{
try
{
// wait until all layers are loaded
await MyMapView.LayersLoadedAsync();
var hydroGroupLayer = MyMapView.Map.Layers.OfType <GroupLayer>().First();
var extent = hydroGroupLayer.ChildLayers.First().FullExtent;
// Create combined extent from child hydrographic layers
foreach (var layer in hydroGroupLayer.ChildLayers)
{
extent = extent.Union(layer.FullExtent);
}
// Zoom to full extent
await MyMapView.SetViewAsync(extent);
// Enable controls
displayPropertiesArea.IsEnabled = true;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
// Add new random graphics to the graphics layer
private async Task CreateGraphicsAsync(int numGraphics)
{
await MyMapView.LayersLoadedAsync();
if (_maxExtent == null)
{
_maxExtent = MyMapView.Extent;
}
for (int n = 0; n < numGraphics; ++n)
{
_graphics.Add(CreateRandomGraphic());
}
}
// Setup graphic layers with test graphics and calculated boundaries of each
private async void CreateGraphics()
{
try
{
await MyMapView.LayersLoadedAsync();
CreateTestGraphics();
CalculateBoundaries();
}
catch (Exception ex)
{
MessageBox.Show("Error occured : " + ex.Message, "Boundary Sample");
}
}
private async void Init()
{
// Wait until all layers are loaded
await MyMapView.LayersLoadedAsync();
bool isSymbolDictionaryInitialized = false;
try
{
// Create a new SymbolDictionary instance
_symbolDictionary = new SymbolDictionary(SymbolDictionaryType.Mil2525c);
isSymbolDictionaryInitialized = true;
}
catch { }
if (!isSymbolDictionaryInitialized)
{
MessageBox.Show("Failed to create symbol dictionary.", "Symbol Dictionary Search Sample");
return;
}
// Collection of strings to hold the selected symbol dictionary keywords
SelectedKeywords = new ObservableCollection <string>();
// Remove any empty strings space from keywords
_keywords = _symbolDictionary.Keywords.OrderBy(k => k).ToList();
_keywords = _keywords.Where(s => !string.IsNullOrWhiteSpace(s)).Distinct().ToList();
// Remove any empty strings space from categories
_categories = new[] { "" }.Concat(_symbolDictionary.Filters["CATEGORY"]);
Categories = _categories.Where(s => !string.IsNullOrWhiteSpace(s)).Distinct();
// Collection of view models for the displayed list of symbols
Symbols = new ObservableCollection <SymbolViewModel>();
// Set the image size
_imageSize = 64;
// Get reference to MessageLayer to use with messages
_messageLayer = MyMapView.Map.Layers.OfType <MessageLayer>().First();
// Fire initial search to populate the results with all symbols
Search();
// Enable the UI
btnSearch.IsEnabled = true;
// Set the DataContext for binding
DataContext = this;
}
// Add new random graphics to the graphics layer
private async Task CreateGraphicsAsync(int numGraphics)
{
await MyMapView.LayersLoadedAsync();
if (_maxExtent == null)
{
_maxExtent = MyMapView.GetCurrentViewpoint(ViewpointType.BoundingGeometry).TargetGeometry.Extent;
}
for (int n = 0; n < numGraphics; ++n)
{
_graphics.Add(CreateRandomGraphic());
}
}
// Make sure the map is ready for user interaction
private async void MyMapView_ExtentChanged(object sender, EventArgs e)
{
try
{
MyMapView.ExtentChanged -= MyMapView_ExtentChanged;
await MyMapView.LayersLoadedAsync();
_isMapReady = true;
}
catch (Exception ex)
{
var _x = new MessageDialog(ex.Message, "Sample Error").ShowAsync();
}
}
// Draw graphics infinitely
private async void AddGraphicsAsync()
{
await MyMapView.LayersLoadedAsync();
while (true)
{
// if the map is not in a valid state
if (MyMapView.Extent == null)
{
break;
}
await AddSingleGraphicAsync();
}
}
// Draw graphics infinitely
private async void AddGraphicsAsync()
{
await MyMapView.LayersLoadedAsync();
while (true)
{
// if the map is not in a valid state
if (MyMapView.GetCurrentViewpoint(ViewpointType.BoundingGeometry).TargetGeometry.Extent == null)
{
break;
}
await AddSingleGraphicAsync();
}
}
// Make sure the map is ready for user interaction
private async void MyMapView_ExtentChanged(object sender, EventArgs e)
{
try
{
MyMapView.ExtentChanged -= MyMapView_ExtentChanged;
await MyMapView.LayersLoadedAsync();
_isMapReady = true;
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.ToString());
}
}
// Setup graphic layers with test graphics and calculated boundaries of each
private async void CreateGraphics()
{
try
{
await MyMapView.LayersLoadedAsync();
CreateTestGraphics();
CalculateBoundaries();
}
catch (Exception ex)
{
var _x = new MessageDialog(
string.Format("Error occured : {0}", ex.ToString(), "Boundary Sample")).ShowAsync();
}
}
// Create three List<Graphic> objects with random graphics to serve as layer GraphicsSources
private async void CreateGraphics()
{
try
{
await MyMapView.LayersLoadedAsync();
for (int n = 1; n <= MAX_GRAPHICS; ++n)
{
_graphicsLayer.Graphics.Add(CreateRandomGraphic(n));
}
}
catch (Exception ex)
{
var _x = new MessageDialog(ex.ToString(), "Sample error").ShowAsync();
}
}
// Draw graphics infinitely
private async Task AddGraphicsAsync()
{
await MyMapView.LayersLoadedAsync();
while (InDrawMode)
{
// if the map is not in a valid state - quit and turn drawing mode off
if (MyMapView.GetCurrentViewpoint(ViewpointType.BoundingGeometry).TargetGeometry.Extent == null)
{
InDrawMode = false;
break;
}
await AddSingleGraphicAsync();
}
}
// Draw graphics infinitely
private async Task AddGraphicsAsync()
{
await MyMapView.LayersLoadedAsync();
while (InDrawMode)
{
// if the map is not in a valid state - quit and turn drawing mode off
if (MyMapView.Extent == null)
{
InDrawMode = false;
break;
}
await AddSingleGraphicAsync();
}
}
// Create three List<Graphic> objects with random graphics to serve as layer GraphicsSources
private async Task CreateGraphics()
{
try
{
await MyMapView.LayersLoadedAsync();
for (int n = 1; n <= MAX_GRAPHICS; ++n)
{
_graphicsLayer.Graphics.Add(CreateRandomGraphic(n));
}
}
catch (Exception ex)
{
MessageBox.Show("Error occurred : " + ex.ToString(), "Sample error");
}
}
// Load data - enable functionality after layers are loaded.
private async void MyMapView_ExtentChanged(object sender, EventArgs e)
{
try
{
MyMapView.ExtentChanged -= MyMapView_ExtentChanged;
// Wait until all layers are loaded
var layers = await MyMapView.LayersLoadedAsync();
_messageLayer = MyMapView.Map.Layers.OfType <MessageLayer>().First();
processMessagesBtn.IsEnabled = true;
}
catch (Exception ex)
{
var _x = new MessageDialog(ex.Message, "Message Processing Sample").ShowAsync();
}
}
private async void MyMapView_NavigationCompleted(object sender, EventArgs e)
{
try
{
MyMapView.NavigationCompleted -= MyMapView_NavigationCompleted;
await LoadParcelsAsync();
await MyMapView.LayersLoadedAsync();
await ProcessUserPointsAsync(false);
}
catch (Exception ex)
{
var _x = new MessageDialog("Error loading parcels: " + ex.Message, "Sample Error").ShowAsync();
}
}
// Load data - set initial renderer after the map has an extent and feature layer loaded
private async void MyMapView_SpatialReferenceChanged(object sender, EventArgs e)
{
try
{
MyMapView.SpatialReferenceChanged -= MyMapView_SpatialReferenceChanged;
var table = _featureLayer.FeatureTable as ServiceFeatureTable;
table.MaxAllowableOffset = MyMapView.UnitsPerPixel;
await MyMapView.LayersLoadedAsync();
comboField.SelectedIndex = 0;
}
catch (Exception ex)
{
var _x = new MessageDialog(ex.Message, "Sample Error").ShowAsync();
}
}
// Load data - set initial renderer after the map has an extent and feature layer loaded
private async void MyMapView_ExtentChanged(object sender, EventArgs e)
{
try
{
MyMapView.ExtentChanged -= MyMapView_ExtentChanged;
var table = featureLayer.FeatureTable as ServiceFeatureTable;
table.MaxAllowableOffset = MyMapView.UnitsPerPixel;
await MyMapView.LayersLoadedAsync();
comboField.SelectedIndex = 0;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Generate Renderer Task Sample");
}
}
private async void MyMapView_NavigationCompleted(object sender, EventArgs e)
{
try
{
MyMapView.NavigationCompleted -= MyMapView_NavigationCompleted;
await LoadParcelsAsync();
await MyMapView.LayersLoadedAsync();
layoutGrid.IsEnabled = true;
await ProcessUserPointsAsync(false);
}
catch (Exception ex)
{
MessageBox.Show("Error loading parcels: " + ex.Message, "Nearest Coordinate Sample");
}
}
private async void GetLayerUrls()
{
await MyMapView.LayersLoadedAsync();
var basemapLayer = MyMapView.Map.Layers["Basemap"] as ArcGISTiledMapServiceLayer;
if (basemapLayer != null)
{
this.basemapLayerServiceUrl = basemapLayer.ServiceUri;
}
var featureLayer = MyMapView.Map.Layers["POI"] as FeatureLayer;
var table = featureLayer.FeatureTable as ServiceFeatureTable;
if (table != null)
{
this.featureLayerServiceUrl = table.ServiceUri;
}
}
private async void HandleLayersInitialized()
{
try
{
var loadresult = await MyMapView.LayersLoadedAsync();
LayersInitializedProperty = "Initialized!";
foreach (var res in loadresult)
{
if (res.LoadError != null)
{
MessageBox.Show(string.Format("Layer {0} failed to load. {1} ", res.Layer.ID, res.LoadError.Message.ToString()));
}
}
}
catch (Exception ex)
{
MessageBox.Show("Error occured : " + ex.ToString(), "Sample error");
}
}
/// <summary>
/// 改变主视图的范围 放大缩小
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
private async Task ChangeMainMapSacleAsync(int type)
{
try
{
await MyMapView.LayersLoadedAsync();
var graphicsOverlay = MyMapView.GraphicsOverlays["overviewOverlay"];
Symbol symbol = symbol = Resources["OutlineSymbol"] as Symbol;
while (true)
{
var geometry = await MyMapView.Editor.RequestShapeAsync(DrawShape.Rectangle, symbol);
graphicsOverlay.Graphics.Clear();
var graphic = new Graphic(geometry, symbol);
graphicsOverlay.Graphics.Add(graphic);
var viewpointExtent = geometry.Extent;
if (type == 1)
{
await MyMapView.SetViewAsync(viewpointExtent);
}
else if (type == 2)
{
await MyMapView.SetViewAsync(viewpointExtent.GetCenter(), MyMapView.Scale * 2);
}
graphicsOverlay.Graphics.Clear();
}
}
catch (TaskCanceledException)
{
// Ignore cancellations from selecting new shape type
}
catch (Exception ex)
{
}
}