/// <summary>
/// Execute the trace with a custom component that can extend it
/// </summary>
/// <param name="extender"></param>
/// <returns></returns>
public Task Trace(IComponentCategoryInterface extender)
{
_sb = null;
_sb = new StringBuilder();
return(QueuingTaskFactory.StartNew(async() => {
//get the stops
foreach (var stop in extender.GetStops())
{
_sb.AppendFormat("Stop: {0}\r\n", stop.Name);
}
//barriers
foreach (var barrier in extender.GetBarriers())
{
_sb.AppendFormat("Barrier: {0}\r\n", barrier.Name);
}
//do whatever
await System.Threading.Tasks.Task.Delay(1000);
//extenders turn
await extender.ModifyTrace(this);
//results
string sep = "";
_sb.AppendLine("\r\nResults");
_sb.Append("OIDS: ");
foreach (var oid in _tr.tracedSegmentOids)
{
_sb.Append(sep + oid.ToString());
sep = ",";
}
}));
}
/// <summary>
/// Retrieves a specific row/feature for given ObjectID.
/// </summary>
/// <param name="table">Table of Feature class containing the row/feature.</param>
/// <param name="oid">The ObjectID of the row/feature to be returned.</param>
/// <returns>The row/feature specified by the ObjectID. If entity with the ObjectID exists, a null reference is returned.</returns>
public static async Task <Row> GetRowByIDAsync(this Table table, long oid)
{
Row foundRow = null;
if (table == null)
{
return(foundRow);
}
await QueuingTaskFactory.StartNew(() =>
{
if (table.Definition is TableDefinition)
{
var tableDefinition = table.Definition as TableDefinition;
var queryFilter = new QueryFilter {
WhereClause = tableDefinition.ObjectIDField + " = " + oid.ToString()
};
RowCursor rc = table.Search(queryFilter, false);
if (rc.MoveNext())
{
foundRow = rc.Current;
}
}
});
return(foundRow);
}
/// <summary>
/// Retrieves a specific row/feature for given ObjectID.
/// </summary>
/// <param name="table">Table of Feature class containing the row/feature.</param>
/// <param name="oid">The ObjectID of the row/feature to be returned.</param>
/// <returns>The row/feature specified by the ObjectID. If entity with the ObjectID exists, a null reference is returned.</returns>
public static async Task <Row> GetRowByIDAsync(this Table table, long oid)
{
Row foundRow = null;
if (table == null)
{
return(foundRow);
}
await QueuingTaskFactory.StartNew(() =>
{
if (table.Definition is TableDefinition)
{
var tableDefinition = table.Definition as TableDefinition;
// TODO
// specify query filter to return only the row with the specified identifier
QueryFilter queryFilter = new QueryFilter();
RowCursor rc = table.Search(queryFilter, false);
if (rc.MoveNext())
{
foundRow = rc.Current;
}
}
});
return(foundRow);
}
/// <summary>
/// Backup function to load bookmarks from a cached mapx file in case the
/// loaded project does not have any
/// </summary>
private static Task <IList <Bookmark> > LoadBookmarksFromMapxAsync()
{
return(QueuingTaskFactory.StartNew <IList <Bookmark> >(async() => {
var assemblyPath = Assembly.GetExecutingAssembly().Location;
var mapXPath = System.IO.Path.Combine(System.IO.Path.GetDirectoryName(assemblyPath), "SamplesData", "World.mapx");
var project = ProjectModule.CurrentProject;
var types = new string[1] {
@"Map"
};
var paths = new string[1] {
mapXPath
};
Tuple <string[], string[]> importResult = await project.ImportProjectItemAsync(types, paths, CancelableProgressor.None);
var mapPath = importResult.Item2[0];
var map = await MappingModule.GetMapAsync(mapPath);
var bookmarks = await map.QueryBookmarks();
List <Bookmark> bookMarks = new List <Bookmark>();
foreach (Bookmark bmk in bookmarks)
{
bookMarks.Add(bmk);
}
return bookMarks;
}));
}
/// <summary>
/// Asynchronous task that splits the current sketch geometry into 100 segments of equal length.
/// </summary>
/// <returns>Task{bool}</returns>
private async Task <bool> ExecuteDensify()
{
// get the current sketch geometry from the editing module
var sketchGeometry = await EditingModule.GetSketchGeometryAsync();
// check if geometry is valid
bool isGeometryValid = await QueuingTaskFactory.StartNew <bool>(() =>
{
bool validGeometry = true;
if (sketchGeometry == null || sketchGeometry.IsEmpty)
{
validGeometry = false;
}
return(validGeometry);
});
if (!isGeometryValid)
{
return(false);
}
// get the currently selected features from the map
// the selected feature uses the above selected geometry
var currentlySelectedFeature = await MappingModule.ActiveMapView.Map.GetSelectionSetAsync();
// set up an edit operation
EditOperation editOperation = new EditOperation();
editOperation.Name = "Densify selected geometry";
Geometry densifiedGeometry = null;
// modify the geometry in the sketch geometry
// the geometry operation needs to run as it own task
await QueuingTaskFactory.StartNew(() =>
{
// compute a length fur the current geometry when divided into 100 segments
var segmentLength = GeometryEngine.Length(sketchGeometry) / 100;
// compute a new densified geometry
densifiedGeometry = GeometryEngine.Densify(sketchGeometry, segmentLength);
});
// for the currently selected feature go through the layers to which the feature belongs
foreach (var mapMember in currentlySelectedFeature.MapMembers)
{
// for each of the selections in the layer (map member)
foreach (var selectedOID in currentlySelectedFeature[mapMember])
{
// provide the densified geometry for the selected feature as part of the modify operation
editOperation.Modify((Layer)mapMember, selectedOID, densifiedGeometry);
}
}
// execute the edit operation and return
return(await editOperation.ExecuteAsync());
}
/// <summary>
/// Zoom to the specified location
/// </summary>
/// <param name="extent">The extent of the geocoded candidate</param>
/// <returns></returns>
public static Task ZoomToLocation(CandidateExtent extent)
{
return(QueuingTaskFactory.StartNew(() => {
ArcGIS.Core.Geometry.Envelope envelope = new ArcGIS.Core.Geometry.Envelope(
extent.XMin, extent.YMin, extent.XMax, extent.YMax,
new ArcGIS.Core.Geometry.SpatialReference(extent.WKID)
);
//apply extent
ProSDKSampleModule.ActiveMapView.ZoomToAsync(GeometryEngine.Expand(envelope, 3, 3, true));
}));
}
private async Task QueryRows(object query)
{
string where = "";
if (query != null)
{
where = query.ToString();
}
IsLoading = true;
lock (_theLock) {
ListOfRows.Clear();
}
if (_layerSource == null)
{
_layerSource = await _selectedLayer.getFeatureClass();
}
if (_layerSource != null)
{
var data = new List <DynamicDataRow>();
await QueuingTaskFactory.StartNew(() => {
var queryFilter = new ArcGIS.Core.Data.QueryFilter {
WhereClause = where
};
int maxcols = 6;
RowCursor cursor = _layerSource.Search(queryFilter);
if (cursor.MoveNext())
{
ExtendListView.Columns = new List <ArcGIS.Core.Data.Field>();
maxcols = cursor.Current.Fields.Count() > 6 ? 6 : cursor.Current.Fields.Count();
for (int c = 0; c < maxcols; c++)
{
ExtendListView.Columns.Add(cursor.Current.Fields[c]);
}
do
{
var row = new DynamicDataRow();
for (int v = 0; v < maxcols; v++)
{
row[GetName(cursor.Fields[v])] = cursor.Current[v].ToString();
}
data.Add(row);
} while (cursor.MoveNext());
}
});
lock (_theLock) {
ListOfRows = null;
ListOfRows = data;
}
}
RaisePropertyChanged("ListOfRows");
Status = string.Format("{0} rows loaded", ListOfRows.Count());
IsLoading = false;
}
/// <summary>
/// Find the first field of the provided field type.
/// </summary>
/// <param name="table">Table or FeatureClass containing the field.</param>
/// <param name="fieldType">
/// The type of field to be retrieved.
/// <remarks>Some types can only exist once per table.</remarks>
/// </param>
/// <returns>
/// The first occurrence of the field type is returned. If no field of the given type is found, a null reference
/// is returned.
/// </returns>
public static async Task <Field> GetFieldByTypeAsync(this Table table, FieldType fieldType)
{
Field foundField = null;
await QueuingTaskFactory.StartNew(() =>
{
IReadOnlyList <Field> fields = ((TableDefinition)table.Definition).Fields;
foundField = fields.FirstOrDefault(a => a.FieldType == fieldType);
});
return(foundField);
}
/// <summary>
/// Create sample polyline feature using the geometries from the point feature layer.
/// </summary>
/// <param name="polylineLayer">Polyline geometry feature layer used to add the new features.</param>
/// <param name="pointLayer">The geometries from the point layer are used as vertices for the new line features.</param>
/// <returns></returns>
private Task <bool> constructSamplePolylines(FeatureLayer polylineLayer, FeatureLayer pointLayer)
{
// execute the fine grained API calls on the CIM main thread
return(QueuingTaskFactory.StartNew(() =>
{
// get the underlying feature class for each layer
var polylineFeatureClass = polylineLayer.GetTableAsync().Result as FeatureClass;
var pointFeatureClass = pointLayer.GetTableAsync().Result as FeatureClass;
// construct a cursor for all point features, since we want all feature there is no
// QueryFilter required
var pointCursor = pointFeatureClass.Search(null, false);
// retrieve the feature class schema information for the feature classes
var polylineDefinition = polylineFeatureClass.Definition as FeatureClassDefinition;
var pointDefinition = pointFeatureClass.Definition as FeatureClassDefinition;
// initialize a counter variable
int pointCounter = 0;
// initialize a list to hold 5 coordinates that are used as vertices for the polyline
var lineCoordinates = new List <Coordinate>(5);
// set up the edit operation for the feature creation
var createOperation = EditingModule.CreateEditOperation();
createOperation.Name = "Create polylines";
// loop through the point features
while (pointCursor.MoveNext())
{
pointCounter++;
var pointFeature = pointCursor.Current as Feature;
// add the feature point geometry as a coordinate into the vertex list of the line
// - ensure that the projection of the point geometry is converted to match the spatial reference of the line
lineCoordinates.Add(((MapPoint)GeometryEngine.Project(pointFeature.Shape, polylineDefinition.SpatialReference)).Coordinate);
// for every 5 geometries, construct a new polyline and queue a feature create
if (pointCounter % 5 == 0)
{
var newPolyline = new Polyline(lineCoordinates, polylineDefinition.SpatialReference);
createOperation.Create(polylineLayer, newPolyline);
lineCoordinates = new List <Coordinate>(5);
}
}
// execute the edit (create) operation
var t = createOperation.ExecuteAsync().Result;
// save the edits
return EditingModule.SaveEditsAsync();
}));
}
/// <summary>
/// Create random sample points in the extent of the spatial reference
/// </summary>
/// <param name="pointLayer">Point geometry feature layer used to the generate the points.</param>
/// <returns>Task of bool</returns>
private Task <bool> constructSamplePoints(FeatureLayer pointLayer)
{
// create a random number generator
var randomGenerator = new Random();
// the database and geometry interactions are considered fine-grained and must be executed on
// the main CIM thread
return(QueuingTaskFactory.StartNew(() =>
{
// get the feature class associated with the layer
var featureClass = pointLayer.GetTableAsync().Result as FeatureClass;
// retrieve the class definition of the point feature class
var classDefinition = featureClass.Definition as FeatureClassDefinition;
// store the spatial reference as its own variable
SpatialReference spatialReference = featureClass.SpatialReference;
// define an area of interest. Random points are generated in the allowed
// confines of the allow extent range
var areaOfInterest = MappingModule.ActiveMapView.GetExtentAsync().Result;
// start an edit operation to create new (random) point features
var createOperation = EditingModule.CreateEditOperation();
createOperation.Name = "Generate points";
// create 20 new point geometries and queue them for creation
for (int i = 0; i < 20; i++)
{
MapPoint newMapPoint = null;
// generate either 2D or 3D geometries
if (classDefinition.HasZ)
{
newMapPoint = new MapPoint(randomGenerator.NextCoordinate(areaOfInterest, true), spatialReference);
}
else
{
newMapPoint = new MapPoint(randomGenerator.NextCoordinate(areaOfInterest, false), spatialReference);
}
// queue feature creation
createOperation.Create(pointLayer, newMapPoint);
}
// execute the edit (feature creation) operation
var t = createOperation.ExecuteAsync().Result;
return EditingModule.SaveEditsAsync().Result;
}));
}
/// <summary>
/// This is a basic FinishSketch method which illustrates the process of using the sketch geometry for a cut.
/// 1. look at all layers in the active map
/// for each layer:
/// 2. Use the sketch geometry to perform a spatial query (Crosses)
/// 3. Use the found features and use them to set up a cut operation
/// 4. Create edit operation
/// 5. Execute the edit operation
/// ! edits are not saved !
///
/// </summary>
/// <returns>Task of bool</returns>
protected override async Task <bool> OnFinishSketch(Geometry geometry, Dictionary <string, object> attributes)
{
// use all layers of the active map to perform the cut
foreach (var layer in ActiveMap.Layers)
{
// intialize a list of ObjectIDs that need to be cut
List <long> cutOiDs = new List <long>();
Table fc = await layer.getFeatureClass();
// on a separate thread
await QueuingTaskFactory.StartNew(() =>
{
// find the features crossed by the sketch geometry
RowCursor rc = fc.Search(geometry, SpatialRelationship.Crosses);
// add the feature IDs into our prepared list
while (rc.MoveNext())
{
cutOiDs.Add(rc.Current.ObjectID);
}
});
// no features 'crossed' by the sketched line
if (!cutOiDs.Any())
{
continue;
}
// create an edit operation for the cut
EditOperation op = EditingModule.CreateEditOperation();
op.Name = string.Format("Cut {0}", layer.Name);
op.ProgressMessage = "Working...";
op.CancelMessage = "Operation canceled";
op.ErrorMessage = "Error cutting features";
op.SelectModifiedFeatures = false;
op.SelectNewFeatures = false;
// for each of the found features set up a cut method inside our edit operation
// for multiple ObjectIDs the cuts with will be stacked into one operation
foreach (var oid in cutOiDs)
{
op.Cut(layer, oid, geometry);
}
await op.ExecuteAsync();
}
//execute the operation
return(true);
}
/// <summary>
/// Returns the field index of the shape/geometry field.
/// </summary>
/// <param name="table">FeatureClass containing the shape field.</param>
/// <returns>The index of the shape field.</returns>
public static async Task <int> GetShapeFieldIndexAsync(this Table table)
{
int fieldIndex = -1;
await QueuingTaskFactory.StartNew(() =>
{
var fcDefinition = table.Definition as FeatureClassDefinition;
if (fcDefinition != null)
{
fieldIndex = fcDefinition.FindField(fcDefinition.ShapeField);
}
});
return(fieldIndex);
}
/// <summary>
/// Returns the name of the shape/geometry field.
/// </summary>
/// <param name="table">FeatureClass containing the shape field.</param>
/// <returns>The name of the shape field.</returns>
public static async Task <string> GetShapeFieldNameAsync(this Table table)
{
string shapeFieldName = String.Empty;
await QueuingTaskFactory.StartNew(() =>
{
var fcDefinition = table.Definition as FeatureClassDefinition;
if (fcDefinition != null)
{
shapeFieldName = fcDefinition.ShapeField;
}
});
return(shapeFieldName);
}
/// <summary>
/// This is a basic FinishSketch method which illustrates the process of using the sketch geometry for a cut.
/// 1. Create edit operation
/// 2. Use the sketch geometry to perform a spatial query
/// 3. Use the found features and use them to set up a cut operation
/// 3. Execute the edit operation
///
/// </summary>
/// <returns>Task of bool</returns>
protected override async Task <bool> FinishSketch(ArcGIS.Core.Geometry.Geometry geometry,
Dictionary <string, object> attributes)
{
if (CurrentTemplate == null)
{
return(false);
}
// intialize a list of ObjectIDs that need to be cut
List <int> cutOIDs = new List <int>();
Table fc = await this.CurrentTemplate.Layer.getFeatureClass();
// on a separate thread
await QueuingTaskFactory.StartNew(() => {
// find the features crossed by the sketch geometry
RowCursor rc = fc.Search(geometry, SpatialRelationship.Crosses);
// add the feature IDs into our prepared list
while (rc.MoveNext())
{
cutOIDs.Add(rc.Current.ObjectID);
}
});
if (!cutOIDs.Any())
{
return(true);//nothing to cut
}
// create an edit operation for the cut
var op = await EditingModule.CreateEditOperationAsync();
op.Name = string.Format("Cut {0}", this.CurrentTemplate.Layer.Name);
op.ProgressMessage = "Working...";
op.CancelMessage = "Operation canceled";
op.ErrorMessage = "Error cutting features";
op.SelectModifiedFeatures = false;
op.SelectNewFeatures = false;
// for each of the found features set up a cut method inside our edit operation
// for multiple ObjectIDs the cuts with will be stacked into one operation
foreach (var oid in cutOIDs)
{
op.Cut(this.CurrentTemplate.Layer, oid, geometry);
}
//execute the operation
return(await op.ExecuteAsync());
}
/// <summary>
/// Performs a spatial query against the table/feature class.
/// </summary>
/// <remarks>It is assumed that the feature class and the search geometry are using the same spatial reference.</remarks>
/// <param name="searchTable">The table/feature class to be searched.</param>
/// <param name="searchGeometry">The geometry used to perform the spatial query.</param>
/// <param name="spatialRelationship">The spatial relationship used by the spatial filter.</param>
/// <returns></returns>
public static async Task <RowCursor> SearchAsync(this Table searchTable, Geometry searchGeometry, SpatialRelationship spatialRelationship)
{
RowCursor rowCursor = null;
await QueuingTaskFactory.StartNew(() =>
{
// TODO
// define a spatial query filter using the provided spatial relationship and search geometry
SpatialQueryFilter spatialQueryFilter = new SpatialQueryFilter();
// apply the spatial filter to the feature class in question
rowCursor = searchTable.Search(spatialQueryFilter);
});
return(rowCursor);
}
/// <summary>
/// Create a single multi-point feature that is comprised of 20 points.
/// </summary>
/// <param name="multiPointLayer">Multi-point geometry feature layer used to add the multi-point feature.</param>
/// <returns></returns>
private async Task constructSampleMultiPoints(FeatureLayer multiPointLayer)
{
// get the feature class associated with the layer
var featureClass = await multiPointLayer.GetTableAsync() as FeatureClass;
// create a random number generator
var randomGenerator = new Random();
// the database and geometry interactions are considered fine-grained and need to be executed on
// a separate thread
await QueuingTaskFactory.StartNew(async() =>
{
// store the spatial reference as its own variable
var spatialReference = featureClass.SpatialReference;
// define an area of interest. Random points are generated in the allowed
// confines of the allow extent range
var areaOfInterest = await MappingModule.ActiveMapView.GetExtentAsync();
// start an edit operation to create new (random) multi-point feature
var createOperation = EditingModule.CreateEditOperation();
createOperation.Name = "Generate multi-point";
// retrieve the class definition of the point feature class
var classDefinition = featureClass.Definition as FeatureClassDefinition;
// create a list to hold the 20 coordinates of the multi-point feature
IList <Coordinate> coordinateList = new List <Coordinate>(20);
for (int i = 0; i < 20; i++)
{
// generate either 2D or 3D geometries
if (classDefinition.HasZ)
{
coordinateList.Add(randomGenerator.NextCoordinate(areaOfInterest, true));
}
else
{
coordinateList.Add(randomGenerator.NextCoordinate(areaOfInterest, false));
}
}
// create and execute the feature creation operation
createOperation.Create(multiPointLayer, new MultiPoint(coordinateList, classDefinition.SpatialReference));
await createOperation.ExecuteAsync();
});
}
/// <summary>
/// Create sample polygon feature using the point geometries from the multi-point feature using the
/// ConvexHull method provided by the GeometryEngine.
/// </summary>
/// <param name="polygonLayer">Polygon geometry feature layer used to add the new feature.</param>
/// <param name="lineLayer">The polyline feature layer containing the features used to construct the polygon.</param>
/// <returns></returns>
private Task <bool> constructSamplePolygon(FeatureLayer polygonLayer, FeatureLayer lineLayer)
{
// execute the fine grained API calls on the CIM main thread
return(QueuingTaskFactory.StartNew(() =>
{
// get the underlying feature class for each layer
var polygonFeatureClass = polygonLayer.GetTableAsync().Result as FeatureClass;
var lineFeatureClass = lineLayer.GetTableAsync().Result as FeatureClass;
// construct a cursor to retrieve the line features
var lineCursor = lineFeatureClass.Search(null, false);
// retrieve the feature class schema information for the feature class
var polygonDefinition = polygonFeatureClass.Definition as FeatureClassDefinition;
var polylineDefinition = lineFeatureClass.Definition as FeatureClassDefinition;
// set up the edit operation for the feature creation
var createOperation = EditingModule.CreateEditOperation();
createOperation.Name = "Create polygons";
List <CoordinateCollection> combinedCoordinates = new List <CoordinateCollection>();
while (lineCursor.MoveNext())
{
// retrieve the first feature
var lineFeature = lineCursor.Current as Feature;
// add the coordinate collection of the current geometry into our overall list of collections
var polylineGeometry = lineFeature.Shape as Polyline;
combinedCoordinates.AddRange(polylineGeometry.Paths);
}
// use the ConvexHull method from the GeometryEngine to construct the polygon geometry
var newPolygon = Polygon.Clone(GeometryEngine.ConvexHull(new Polyline(combinedCoordinates,
lineFeatureClass.SpatialReference))) as Polygon;
// queue the polygon creation
createOperation.Create(polygonLayer, newPolygon);
// execute the edit (polygon create) operation
var t = createOperation.ExecuteAsync().Result;
// save the edits
return EditingModule.SaveEditsAsync();
}));
}
protected override Task OnActivateAsync(bool active)
{
if (active == true)
{
var targetLayers = MappingModule.ActiveTOC.SelectedLayers;
FeatureLayer targetLayer = targetLayers.First() as FeatureLayer;
_linearDisplayUnit = DisplayUnitEnvironment.GetEnvironment.DefaultMapLinearUnit;
List <Layer> layersToKeep = new List <Layer>(targetLayers.Count);
foreach (var item in targetLayers)
{
layersToKeep.Add(item);
}
if (GeometryExercisesSolutionModule.Current.HasBeenAdded == false)
{
string layerTemplatesLocation = String.Empty;
DirectoryInfo arcgisProDirectoryInfo = new DirectoryInfo(Path.GetDirectoryName(Process.GetCurrentProcess().MainModule.FileName));
layerTemplatesLocation = Path.Combine(arcgisProDirectoryInfo.Parent.FullName, "Resources", "LayerTemplates", "en-US");
IEnumerable <FileInfo> fileInfos = new DirectoryInfo(layerTemplatesLocation).EnumerateFiles();
QueuingTaskFactory.StartNew(async() =>
{
foreach (var templateFileInfo in fileInfos)
{
ItemInfoValue?packageItemInfo = await ItemInfoHelper.GetItemInfoValueAsync(templateFileInfo.FullName);
PackageItem layerPackage = new PackageItem(packageItemInfo.Value);
await layerPackage.AddToCurrentMapAsync(null);
GeometryExercisesSolutionModule.Current.HasBeenAdded = true;
break;
}
MappingModule.ActiveTOC.ClearSelection();
MappingModule.ActiveTOC.SelectLayers(layersToKeep);
});
}
}
else
{
System.Diagnostics.Debug.WriteLine("");
}
return(base.OnActivateAsync(active));
}
/// <summary>
/// Find the field with the provided field name.
/// </summary>
/// <param name="table">Table or FeatureClass containing the field.</param>
/// <param name="fieldName">
/// The name of the field to be retrieved.
/// </param>
/// <returns>
/// The field with the provided name. If no field of the given name is found, a null reference
/// is returned.
/// </returns>
public static async Task <Field> GetFieldByNameAsync(this Table table, string fieldName)
{
Field foundField = null;
if (String.IsNullOrEmpty(fieldName))
{
return(foundField);
}
await QueuingTaskFactory.StartNew(() =>
{
IReadOnlyList <Field> fields = ((TableDefinition)table.Definition).Fields;
foundField = fields.FirstOrDefault(a => a.Name.Equals(fieldName));
});
return(foundField);
}
/// <summary>
/// Performs a spatial query against the table/feature class.
/// </summary>
/// <remarks>It is assumed that the feature class and the search geometry are using the same spatial reference.</remarks>
/// <param name="searchTable">The table/feature class to be searched.</param>
/// <param name="searchGeometry">The geometry used to perform the spatial query.</param>
/// <param name="spatialRelationship">The spatial relationship used by the spatial filter.</param>
/// <returns></returns>
public static async Task <RowCursor> SearchAsync(this Table searchTable, Geometry searchGeometry, SpatialRelationship spatialRelationship)
{
RowCursor rowCursor = null;
await QueuingTaskFactory.StartNew(() =>
{
// define a spatial query filter
var spatialQueryFilter = new SpatialQueryFilter
{
// passing the search geometry to the spatial filter
FilterGeometry = searchGeometry,
// define the spatial relationship between search geometry and feature class
SpatialRelationship = spatialRelationship
};
// apply the spatial filter to the feature class in question
rowCursor = searchTable.Search(spatialQueryFilter);
});
return(rowCursor);
}
/// <summary>
/// Loads all the bookmarks found in the project
/// </summary>
/// <param name="currentProject">Current project</param>
/// <returns></returns>
public static Task <IList <Bookmark> > LoadBookmarksAsync(this Project currentProject)
{
return(QueuingTaskFactory.StartNew <IList <Bookmark> >(async() => {
var mc = currentProject.ProjectItemContainers.OfType <MapContainer>().FirstOrDefault();
List <Bookmark> bookMarks = new List <Bookmark>();
foreach (var mapItem in mc)
{
var map = await MappingModule.GetMapAsync(mapItem.Path);
if (map != null)
{
var bmks = await map.QueryBookmarksAsync();
if (null != bmks && bmks.Count() > 0)
{
foreach (var bmk in bmks)
{
bookMarks.Add(bmk);
}
}
}
}
return bookMarks;
}));
}
protected override async void OnMouseUp(System.Windows.Input.MouseButtonEventArgs e)
{
if (e.ButtonState == MouseButtonState.Released)
{
if (e.ChangedButton == System.Windows.Input.MouseButton.Left)
{
e.Handled = true;
POINT clickPOINT;
GetCursorPos(out clickPOINT);
MapPoint clickMapPoint = await MappingModule.ActiveMapView.ScreenToLocationAsync(new System.Windows.Point(clickPOINT.X, clickPOINT.Y));
Envelope ext = await MappingModule.ActiveMapView.GetExtentAsync();
double searchDistance = 0.0;
await QueuingTaskFactory.StartNew(() =>
{
searchDistance = ext.Width / 2.0;
});
var targetLayer = MappingModule.ActiveTOC.SelectedLayers.OfType <FeatureLayer>().First();
ArcGIS.Core.Geometry.GeometryEngine.ProximityResult clickResult = await ComputeDistanceToGeometryAsync(clickMapPoint, targetLayer, 1, searchDistance);
var templateGroupLayer = MappingModule.ActiveMapView.Map.GetFlattenedLayers().OfType <GroupLayer>().Where(lyr => lyr.Name.Equals("Bright Map Notes")).First();
var flashLayer = templateGroupLayer.GetFlattenedLayers().OfType <FeatureLayer>().Where(lyr => lyr.Name.Equals("Bright - Point Notes")).First();
if (clickResult != null)
{
await flashLayer.AddAndFlashGeometryAsync(clickResult.Point);
}
}
base.OnMouseUp(e);
}
}
private async Task <ArcGIS.Core.Geometry.GeometryEngine.ProximityResult> ComputeDistanceToGeometryAsync(MapPoint clickPoint, FeatureLayer targetLayer, int hitNumber, double searchDistance)
{
FeatureClass featureClass = await targetLayer.GetTableAsync() as FeatureClass;
Geometry searchBuffer = null;
List <Geometry> geometryList = new List <Geometry>();
double closestDistance = double.MaxValue;
ArcGIS.Core.Geometry.GeometryEngine.ProximityResult clickResult = null;
MapPoint closestPoint = null;
bool foundFeatureAndComputedDistance = false;
await QueuingTaskFactory.StartNew(() =>
{
var classDefinition = featureClass.Definition as FeatureClassDefinition;
searchBuffer = GeometryEngine.Project(GeometryEngine.Buffer(clickPoint, searchDistance), classDefinition.SpatialReference);
SpatialQueryFilter spatialFilter = new SpatialQueryFilter()
{
FilterGeometry = searchBuffer,
SpatialRelationship = SpatialRelationship.EnvelopeIntersects
};
RowCursor featureCursor = featureClass.Search(spatialFilter, false);
while (featureCursor.MoveNext())
{
var feature = featureCursor.Current as Feature;
geometryList.Add(feature.Shape);
}
clickPoint = GeometryEngine.Project(clickPoint, classDefinition.SpatialReference) as MapPoint;
foreach (var geometry in geometryList)
{
var geoResult = GeometryEngine.NearestBoundaryPoint(geometry, clickPoint, searchDistance);
if (geoResult.Distance < closestDistance)
{
closestDistance = geoResult.Distance;
clickResult = geoResult;
foundFeatureAndComputedDistance = true;
}
}
});
if (foundFeatureAndComputedDistance)
{
DockPane dockPane = FrameworkApplication.FindDockPane("GeometrySamples_ClosestGeometryPane");
if (dockPane == null)
{
return(new ArcGIS.Core.Geometry.GeometryEngine.ProximityResult());
}
DistancePaneViewModel cgVM = dockPane as DistancePaneViewModel;
cgVM.DistanceDisplayUnit = _linearDisplayUnit;
cgVM.ClickResult = clickResult;
}
return(clickResult);
}
/// <summary>
/// This is a basic FinishSketch method which illustrates the process of using the sketch geometry for feature creation.
/// 1. Create edit operation
/// 2. Use the sketch geometry to perform a spatial query
/// 3. Use the found features and use them to set up a cut operation
/// 3. Execute the edit operation
///
/// Any construction tool will execute successfully with this routine commented out (the default implementation is
/// supplied by the Editor framework). Uncomment this method if you wish to add your own additional implementation details.
/// </summary>
/// <returns>Task{bool}</returns>
protected override Task <bool> OnFinishSketch(Geometry geometry, Dictionary <string, object> attributes)
{
return(QueuingTaskFactory.StartNew(() => ExecuteCut(CurrentTemplate, geometry, attributes)));
}
protected async Task <bool> ExecuteCut(EditingTemplate template, Geometry geometry, Dictionary <string, object> attributes)
{
if (template == null)
{
return(false);
}
if (geometry == null)
{
return(false);
}
// create an edit operation
EditOperation op = EditingModule.CreateEditOperation();
op.Name = "Cut Elements";
op.ProgressMessage = "Working...";
op.CancelMessage = "Operation canceled.";
op.ErrorMessage = "Error cutting polygons";
op.SelectModifiedFeatures = false;
op.SelectNewFeatures = false;
// get the feature class associated with the layer
Table fc = await template.Layer.GetTableAsync();
// initialize a list of ObjectIDs that need to be cut
var cutOIDs = new List <long>();
// on a separate thread
await QueuingTaskFactory.StartNew(async() =>
{
// TODO
// find the features crossed by the sketch geometry
RowCursor rc = await fc.SearchAsync(geometry, SpatialRelationship.Crosses);
// add the feature IDs into our prepared list
while (rc.MoveNext())
{
var feature = rc.Current as Feature;
if (feature == null)
{
break;
}
if (feature.Shape != null)
{
// we are interested in the intersection points
// in case there is only one intersection then the sketch geometry doesn't enter and leave the
// base geometry and the cut operation won't work.
Geometry intersectionGeometry = GeometryEngine.Intersection(feature.Shape, geometry, GeometryDimension.esriGeometry0Dimension);
if (intersectionGeometry is MultiPoint)
{
//var intersectionPoints = intersectionGeometry as MultiPoint;
//// we are only interested in feature IDs where the count of intersection points is larger than 1
//// i.e., at least one entry and one exit
//if (intersectionPoints.Coordinates.Count > 1)
//{
// // add the current feature to the overall list of features to cut
// cutOIDs.Add(rc.Current.ObjectID);
//}
}
}
}
});
// add the elements to cut into the edit operation
op.Cut(template.Layer, cutOIDs, geometry);
//execute the operation
bool operationResult = await op.ExecuteAsync();
return(operationResult);
}
