private IEnumerable <INetworkEdge> EnumerateAdjacentTurnEdges(OSMTurnInfo osmTurn, bool useToJunction) { INetworkQuery query = (INetworkQuery)_networkDataset; // get turn FROM-edge INetworkSource source = _networkDataset.get_SourceByName(((IDataset)osmTurn.FromFeature.Class).Name); IEnumNetworkElement enumNetElements = query.get_EdgesByPosition(source.ID, osmTurn.FromFeature.OID, 0.0, false); INetworkEdge edgeFrom = enumNetElements.Next() as INetworkEdge; // get the FROM-edge Junctions INetworkJunction fromJunction = query.CreateNetworkElement(esriNetworkElementType.esriNETJunction) as INetworkJunction; INetworkJunction toJunction = query.CreateNetworkElement(esriNetworkElementType.esriNETJunction) as INetworkJunction; edgeFrom.QueryJunctions(fromJunction, toJunction); // Get adjacent edges from the turn center junction INetworkJunction junction = ((useToJunction) ? toJunction : fromJunction); for (int n = 0; n < junction.EdgeCount; ++n) { INetworkEdge edge = query.CreateNetworkElement(esriNetworkElementType.esriNETEdge) as INetworkEdge; junction.QueryEdge(n, true, edge); if ((edge.OID == osmTurn.FromFeature.OID) || (edge.OID == osmTurn.ToFeature.OID)) { continue; } yield return(edge); } }
private IEnumerable <INetworkEdge> EnumerateAdjacentTurnEdges(OSMTurnInfo osmTurn, bool useToJunction) { INetworkQuery query = (INetworkQuery)_networkDataset; // get turn FROM-edge INetworkSource source = _networkDataset.get_SourceByName(((IDataset)osmTurn.FromFeature.Class).Name); IEnumNetworkElement enumNetElements = null; IRelationalOperator relationalOperator = ((IPolyline)osmTurn.ToFeature.Shape).FromPoint as IRelationalOperator; bool useFromPointOfToFeature = relationalOperator.Contains(osmTurn.ViaFeature.Shape); if (useFromPointOfToFeature) { enumNetElements = query.get_EdgesByPosition(source.ID, osmTurn.ToFeature.OID, 0, false); } else { enumNetElements = query.get_EdgesByPosition(source.ID, osmTurn.ToFeature.OID, 1, false); } INetworkEdge edgeFrom = enumNetElements.Next() as INetworkEdge; // get the FROM-edge Junctions INetworkJunction fromJunction = query.CreateNetworkElement(esriNetworkElementType.esriNETJunction) as INetworkJunction; INetworkJunction toJunction = query.CreateNetworkElement(esriNetworkElementType.esriNETJunction) as INetworkJunction; edgeFrom.QueryJunctions(fromJunction, toJunction); // Get adjacent edges from the turn center junction INetworkJunction junction = ((useFromPointOfToFeature) ? fromJunction : toJunction); for (int n = 0; n < junction.EdgeCount; ++n) { INetworkEdge edge = query.CreateNetworkElement(esriNetworkElementType.esriNETEdge) as INetworkEdge; if (useFromPointOfToFeature) { junction.QueryEdge(n, true, edge); } else { junction.QueryEdge(n, false, edge); } //if ((edge.SourceID == osmTurn.FromFeature.OID) || (edge.SourceID == osmTurn.ToFeature.OID)) if ((edge.OID == osmTurn.ToFeature.OID)) { continue; } yield return(edge); } }
/// <summary> /// Take an EID value as a string from one of the dataGridView controls and find /// the network element that corresponds to the EID /// <param name="eidString">The EID value as a string</param> /// <param name="datagridviewName">The name of the dataGrid that held the EID</param> /// </summary> private INetworkElement GetElementByEID(string eidString, string datagridviewName) { int eid = -1; if (!Int32.TryParse(eidString, out eid)) { return(null); } INetworkQuery netQuery = m_context.NetworkDataset as INetworkQuery; INetworkEdge edge = netQuery.CreateNetworkElement(esriNetworkElementType.esriNETEdge) as INetworkEdge; INetworkJunction junction = netQuery.CreateNetworkElement(esriNetworkElementType.esriNETJunction) as INetworkJunction; INetworkElement element = null; try { // Populate the network element from the EID if (datagridviewName == "dataGridViewEdges") { netQuery.QueryEdge(eid, esriNetworkEdgeDirection.esriNEDAlongDigitized, edge); element = edge as INetworkElement; } else if (datagridviewName == "dataGridViewJunctions") { netQuery.QueryJunction(eid, junction); element = junction as INetworkElement; } } catch { // if the query fails, the element will not be displayed } return(element); }
private byte[] QueryByExtentHandler(NameValueCollection boundVariables, JsonObject operationInput, string outputFormat, string requestProperties, out string responseProperties) { responseProperties = null; if (networkDataset == null) { throw new NullReferenceException("Could not access the network dataset."); } if (!operationInput.TryGetString("Extent", out var envelopeString)) { throw new ArgumentNullException("Extent is invalid."); } var coords = envelopeString.Split(';'); var minCoords = coords[0].Split(','); var maxCoords = coords[1].Split(','); double.TryParse(minCoords[0].Trim(), out var minX); double.TryParse(minCoords[1].Trim(), out var minY); double.TryParse(maxCoords[0].Trim(), out var maxX); double.TryParse(maxCoords[0].Trim(), out var maxY); // Find features in envelope IEnvelope env = new EnvelopeClass(); env.PutCoords(minX, minY, maxX, maxY); ISpatialFilter spatialFilter = new SpatialFilter(); spatialFilter.Geometry = env; spatialFilter.SpatialRel = esriSpatialRelEnum.esriSpatialRelIntersects; // Add selected features OID into LongArray ILongArray oIDs = new LongArray(); IFeatureCursor fCursor = streetFC.Search(spatialFilter, true); IFeature feature = fCursor.NextFeature(); while (feature != null) { oIDs.Add(feature.OID); feature = fCursor.NextFeature(); } // Get the network edges corresponding to the streets and write out information about them INetworkQuery networkQuery = networkDataset as INetworkQuery; INetworkJunction fromJunction = networkQuery.CreateNetworkElement(esriNetworkElementType.esriNETJunction) as INetworkJunction; INetworkJunction toJunction = networkQuery.CreateNetworkElement(esriNetworkElementType.esriNETJunction) as INetworkJunction; IEnumNetworkElement networkElements = networkQuery.ElementsByOIDs[streetsSourceID, oIDs]; INetworkElement networkElement = networkElements.Next(); JSONObject result = new JSONObject(); JSONArray elementArray = new JSONArray(); INetworkEdge networkEdge; while (networkElement != null) { JSONObject jo = new JSONObject(); networkEdge = networkElement as INetworkEdge; networkEdge.QueryJunctions(fromJunction, toJunction); double travelTime = (double)networkEdge.AttributeValue[travelTimeAttributeID]; jo.AddLong("EdgeID", networkEdge.EID); jo.AddLong("FromJunctionID", fromJunction.EID); jo.AddLong("ToJunctionID", toJunction.EID); jo.AddDoubleEx(costAttributeName, travelTime, 4); elementArray.AddJSONObject(jo); networkElement = networkElements.Next(); } result.AddJSONArray("NetworkElements", elementArray); return(Encoding.UTF8.GetBytes(result.ToJSONString(null))); }
private void btnFindWC_Click(object sender, EventArgs e) { clear(); clearDeep(); IFdeCursor cursor = null; try { if (closestFacilitySolver == null) { closestFacilitySolver = network.CreateClosestFacilitySolver(); closestFacilitySolver.ImpedanceAttributeName = "Length"; } closestFacilitySolver.LocationSearchTolerance = double.Parse(txtSearchTolerance.Text); closestFacilitySolver.ClearFacilityLocations(); closestFacilitySolver.ClearEventLocations(); // 添加WC设施点 foreach (IFeatureClass fc in fcMap_POI.Keys) { if (fc.Name.Contains("WC")) { cursor = fc.Search(null, true); IRowBuffer row = null; while ((row = cursor.NextRow()) != null) { try { INetworkLocation facility = new NetworkLocation(); int pos = row.FieldIndex("Geometry"); IPoint point = row.GetValue(pos) as IPoint; facility.Position = point; facility.Name = fc.Guid.ToString() + "_" + row.GetValue(0).ToString(); //设定名字"fcGUID_oid" closestFacilitySolver.AddFacilityLocation(facility); } catch (COMException ex) { } } break; } } if (closestFacilitySolver.FacilityLocationCount == 0) { MessageBox.Show("添加的厕所数为0,请调整LocationSearchTolerance大小"); return; } // 添加人所在的位置 INetworkEventLocation location = new NetworkEventLocation(); this.axRenderControl1.Camera.GetCamera2(out fdepoint, out ang); location.Position = fdepoint; location.Name = "I'mHere"; location.TargetFacilityCount = int.Parse(txtMaxNum.Text); location.SetCutoff("Length", double.Parse(txtCutoff.Text)); closestFacilitySolver.AddEventLocation(location); // 可视化人的位置 IImagePointSymbol ips = new ImagePointSymbol(); ips.ImageName = "#(i)"; ips.Size = 50; renderPoint = this.axRenderControl1.ObjectManager.CreateRenderPoint(fdepoint, ips, rootId); if (closestFacilitySolver.Solve()) { int routeCount = closestFacilitySolver.RouteCount; if (routeCount == 0) { MessageBox.Show("没有厕所在指定范围内"); return; } for (int i = 0; i < routeCount; i++) { INetworkRoute route = closestFacilitySolver.GetRoute(i); if (route != null) { // 可视化线路 ICurveSymbol lineSym = new CurveSymbol(); lineSym.Color = System.Drawing.Color.Yellow; lineSym.Width = -2; IGeometry geo = route.GetRouteGeometry(); if (geo.GeometryType == gviGeometryType.gviGeometryPolyline) { IPolyline line = geo as IPolyline; renderLine = this.axRenderControl1.ObjectManager.CreateRenderPolyline(line, lineSym, rootId); renderLine.MaxVisibleDistance = 10000; renderLineArray.Add(renderLine); } else if (geo.GeometryType == gviGeometryType.gviGeometryMultiPolyline) { IMultiPolyline line = geo as IMultiPolyline; multiRenderLine = this.axRenderControl1.ObjectManager.CreateRenderMultiPolyline(line, lineSym, rootId); multiRenderLine.MaxVisibleDistance = 10000; multiRenderLineArray.Add(multiRenderLine); } drawTempLine(route); // 高亮厕所 int segmentCount = route.SegmentCount; for (int j = 0; j < segmentCount; j++) { INetworkLocation endLocation = route.GetSegment(j).EndLocation; string[] strs = endLocation.Name.Split('_'); foreach (IFeatureClass fc in fcMap_POI.Keys) { if (fc.Guid.ToString() == strs[0]) { this.axRenderControl1.FeatureManager.HighlightFeature(fc, int.Parse(strs[1]), System.Drawing.Color.Yellow); break; } } //////////////////////测试NetworkElement相关////////////////////////////////// INetworkElementCollection elementCols = route.GetSegment(j).GetNetworkElements(); for (int c = 0; c < elementCols.Count; c++) { INetworkElement element = elementCols.Get(c); if (element.Type == gviNetworkElementType.gviEdge) { INetworkEdge edge = element as INetworkEdge; int subId = edge.SubID; } else { INetworkJunction junction = element as INetworkJunction; INetworkEdgeCollection edgeCol = junction.IncomingEdges; for (int ee = 0; ee < edgeCol.Count; ee++) { INetworkEdge edge = edgeCol.Get(ee); int subId = edge.SubID; } } } ////////////////////////////////////////////////////////////////////////// } } } } else { MessageBox.Show("查找失败"); } } catch (COMException ex) { MessageBox.Show(ex.Message); } finally { if (cursor != null) { //Marshal.ReleaseComObject(cursor); cursor = null; } } }