/// <summary> /// 判断数据是否是有效数据 /// </summary> /// <returns></returns> public bool IsValidDataSource() { _ogrLayer.ResetReading(); int featureCount = _ogrLayer.GetFeatureCount(1); if (featureCount <= 0) { return(false); } Feature pFeature = _ogrLayer.GetNextFeature(); if (pFeature == null) { return(false); } Geometry pGeom = pFeature.GetGeometryRef(); if (pGeom == null) { return(false); } if (pGeom.GetGeometryType() == wkbGeometryType.wkbNone || pGeom.GetGeometryType() == wkbGeometryType.wkbUnknown) { return(false); } return(true); }
/// <summary> /// Returns geometry Object IDs whose bounding box intersects 'bbox' /// </summary> /// <param name="bbox"></param> /// <returns></returns> public Collection <uint> GetObjectIDsInView(SharpMap.Geometries.BoundingBox bbox) { _OgrLayer.SetSpatialFilterRect(bbox.Min.X, bbox.Min.Y, bbox.Max.X, bbox.Max.Y); OSGeo.OGR.Feature _OgrFeature = null; _OgrLayer.ResetReading(); Collection <uint> _ObjectIDs = new Collection <uint>(); while ((_OgrFeature = _OgrLayer.GetNextFeature()) != null) { _ObjectIDs.Add((uint)_OgrFeature.GetFID()); _OgrFeature.Dispose(); } return(_ObjectIDs); }
/// <summary> /// Returns geometry Object IDs whose bounding box intersects 'bbox' /// </summary> /// <param name="bbox"></param> /// <returns></returns> public Collection <uint> GetObjectIDsInView(IEnvelope bbox) { _OgrLayer.SetSpatialFilterRect(bbox.MinX, bbox.MinY, bbox.MaxX, bbox.MaxY); OSGeo.OGR.Feature _OgrFeature = null; _OgrLayer.ResetReading(); Collection <uint> _ObjectIDs = new Collection <uint>(); while ((_OgrFeature = _OgrLayer.GetNextFeature()) != null) { _ObjectIDs.Add((uint)_OgrFeature.GetFID()); _OgrFeature.Dispose(); } return(_ObjectIDs); }
public static string ToGeoJson(string shpPath) { OSGeo.OGR.Ogr.RegisterAll(); Driver drv = Ogr.GetDriverByName("ESRI Shapefile"); using (var ds = drv.Open(shpPath, 0)) { OSGeo.OGR.Layer layer = ds.GetLayerByIndex(0); OSGeo.OGR.Feature f; layer.ResetReading(); System.Text.StringBuilder sb = new System.Text.StringBuilder(); while ((f = layer.GetNextFeature()) != null) { var geom = f.GetGeometryRef(); if (geom != null) { var geometryJson = geom.ExportToJson(null); sb.AppendLine(geometryJson); } } return(sb.ToString()); } }
public FeatureWrapper GetNextFeature() { var feature = _ogrLayer.GetNextFeature(); if (feature == null) { return(null); } var featureWrapper = new FeatureWrapper(feature); return(featureWrapper); }
/// <summary> /// Adds the features for the dxf files. /// </summary> /// <param name="fs">The list of featuresets the features get added to.</param> /// <param name="styles">The list of lists the styles get added to.</param> /// <param name="layer">The layer to get the features from.</param> /// <param name="fieldCount">The number of field contained in the features datarow.</param> /// <param name="schema">The list of columns used to fill the datarow.</param> private static void AddFeatures(Dictionary <FeatureType, IFeatureSet> fs, Dictionary <FeatureType, List <string> > styles, Layer layer, int fieldCount, IList <Column> schema) { var wkbReader = new WKBReader(); OgrFeature ogrFeature = layer.GetNextFeature(); while (ogrFeature != null) { var wkbGeometry = GetGeometry(ogrFeature); var geometry = wkbReader.Read(wkbGeometry); if (geometry != null && geometry.IsValid && !geometry.IsEmpty) { IFeature feature = new Feature(geometry); if (feature.FeatureType != FeatureType.Unspecified) { fs[feature.FeatureType].Features.Add(feature); for (int i = 0; i < fieldCount; i++) { feature.DataRow[i] = GetValue(i, schema, ogrFeature) ?? DBNull.Value; } var str = ogrFeature.GetStyleString(); if (!string.IsNullOrWhiteSpace(str)) { str = RemoveText(str); feature.DataRow["style"] = str; if (!styles[feature.FeatureType].Contains(str)) { // add the style to the layer styles[feature.FeatureType].Add(str); } } } } ogrFeature = layer.GetNextFeature(); } }
/// <summary> /// Adds the features for the other file types. /// </summary> /// <param name="fs">The featureset the features get added to.</param> /// <param name="styles">The list the styles get added to.</param> /// <param name="layer">The layer to get the features from.</param> /// <param name="ogrFeatureDefinition">The feature definition that contains the field count.</param> /// <param name="schema">The list of columns used to fill the datarow.</param> private static void AddFeatures(IFeatureSet fs, IList <string> styles, Layer layer, FeatureDefn ogrFeatureDefinition, IList <Column> schema) { var wkbReader = new WKBReader(); OgrFeature ogrFeature = layer.GetNextFeature(); var fieldCount = ogrFeatureDefinition.GetFieldCount(); while (ogrFeature != null) { var wkbGeometry = GetGeometry(ogrFeature); var geometry = wkbReader.Read(wkbGeometry); if (geometry != null && geometry.IsValid && !geometry.IsEmpty) { IFeature feature = new Feature(geometry); if (fs.Features.Count == 0 || feature.FeatureType == fs.FeatureType) { fs.Features.Add(feature); for (int i = 0; i < fieldCount; i++) { feature.DataRow[i] = GetValue(i, schema, ogrFeature) ?? DBNull.Value; } var str = ogrFeature.GetStyleString(); feature.DataRow["style"] = str; if (!styles.Contains(str)) { // add the style to the layer styles.Add(str); } } } ogrFeature = layer.GetNextFeature(); } }
public static void ConvertSHPtoGJSON(string shapefilePath, out StringBuilder gJSON) { string shpPath = shapefilePath; Ogr.RegisterAll(); OSGeo.OGR.Driver drv = Ogr.GetDriverByName("ESRI Shapefile"); var ds = drv.Open(shpPath, 0); /* * Driver geoJSONDriver = Ogr.GetDriverByName("GeoJSON"); * * string geojsonfilepath = @"c:\temp\us_counties_test.json"; * * if (System.IO.File.Exists(geojsonfilepath)) * System.IO.File.Delete(geojsonfilepath); * * geoJSONDriver.CreateDataSource(@"c:\temp\us_counties_test.json", null); */ OSGeo.OGR.Layer layer = ds.GetLayerByIndex(0); OSGeo.OGR.Feature f; layer.ResetReading(); System.Text.StringBuilder sb = new System.Text.StringBuilder(); var options = new[] { "-f", "GeoJSON", "-lco", "RFC7946=YES" }; while ((f = layer.GetNextFeature()) != null) { var geom = f.GetGeometryRef(); if (geom != null) { var geometryJson = geom.ExportToJson(options); sb.AppendLine(geometryJson); } } gJSON = sb; }
//read data really private static FeatureCollection GetFeatureCollection(OSGeo.OGR.Layer layer, GisSmartTools.Data.Schema schema) { FeatureCollection fc = new FeatureCollection(); OSGeo.OGR.Feature feature; OSGeo.OGR.FeatureDefn posDefn = layer.GetLayerDefn(); int fieldCount = posDefn.GetFieldCount(); int iField = 0; //read all the features in layer while ((feature = layer.GetNextFeature()) != null) { OSGeo.OGR.Geometry geometry = feature.GetGeometryRef(); GisSmartTools.Data.Feature feat = new Feature(feature.GetFID(), schema, null); //get and save feature's attributes for (iField = 0; iField < fieldCount; iField++) { OSGeo.OGR.FieldDefn oField = posDefn.GetFieldDefn(iField); Object objAttr; FieldType ft = oField.GetFieldType(); switch (ft) { case FieldType.OFTString: objAttr = feature.GetFieldAsString(iField); break; case FieldType.OFTInteger: objAttr = feature.GetFieldAsInteger(iField); break; case FieldType.OFTReal: objAttr = feature.GetFieldAsDouble(iField); break; case FieldType.OFTWideString: objAttr = feature.GetFieldAsString(iField); break; case FieldType.OFTStringList: objAttr = feature.GetFieldAsStringList(iField); break; case FieldType.OFTIntegerList: int outCount; objAttr = feature.GetFieldAsIntegerList(iField, out outCount); break; case FieldType.OFTRealList: int outCount2; objAttr = feature.GetFieldAsDoubleList(iField, out outCount2); break; case FieldType.OFTWideStringList: objAttr = feature.GetFieldAsStringList(iField); break; default: objAttr = feature.GetFieldAsString(iField); break; } feat.AddAttribute(oField.GetName(), objAttr); } //get geometry if (geometry != null) { OSGeo.OGR.wkbGeometryType goetype = geometry.GetGeometryType(); switch (goetype) //according to the type, we operate differently { case wkbGeometryType.wkbPoint: if (geometry != null && goetype == wkbGeometryType.wkbPoint) { feat.geometry = new PointD(geometry.GetX(0), geometry.GetY(0)); } //add feature to featureCollection fc.InsertFeature(feat); break; case wkbGeometryType.wkbLineString: List <PointD> pointlist = new List <PointD>(); int pointcount = geometry.GetPointCount(); for (int k = 0; k < pointcount; k++) { pointlist.Add(new PointD(geometry.GetX(k), geometry.GetY(k))); } feat.geometry = new SimplePolyline(pointlist); //add feature to featureCollection fc.InsertFeature(feat); break; case wkbGeometryType.wkbMultiLineString: feat.geometry = GetPolyline(geometry); fc.InsertFeature(feat); break; case wkbGeometryType.wkbPolygon: feat.geometry = GetSimplePolygon(geometry); //add feature to featureCollection fc.InsertFeature(feat); break; case wkbGeometryType.wkbMultiPolygon: feat.geometry = GetPolygon(geometry); fc.InsertFeature(feat); break; default: //we don't support another geometry types, //so we don't load those records to avoid errors break; } } else { Console.WriteLine("kkkkkkkkkkkkkkkkkkkkkkkkkkkkkk"); } } return(fc); }
protected override void SolveInstance(IGH_DataAccess DA) { ///Gather GHA inputs List <Curve> boundary = new List <Curve>(); DA.GetDataList <Curve>("Boundary", boundary); string shpFilePath = string.Empty; DA.GetData <string>("Vector Data Location", ref shpFilePath); bool cropIt = true; DA.GetData <Boolean>("Crop file", ref cropIt); string userSRStext = "WGS84"; DA.GetData <string>(2, ref userSRStext); ///GDAL setup ///Some preliminary testing has been done to read SHP, GeoJSON, OSM, KML, MVT, GML and GDB ///It can be spotty with KML, MVT and GML and doesn't throw informative errors. Likely has to do with getting a valid CRS and ///TODO: resolve errors with reading KML, MVT, GML. DataSource dataSource = CreateDataSource(shpFilePath); List <Layer> layerSet = GetLayers(dataSource); ///Declare trees GH_Structure <GH_Rectangle> recs = new GH_Structure <GH_Rectangle>(); GH_Structure <GH_String> spatialReferences = new GH_Structure <GH_String>(); GH_Structure <GH_String> fnames = new GH_Structure <GH_String>(); GH_Structure <GH_String> fset = new GH_Structure <GH_String>(); GH_Structure <GH_Point> gset = new GH_Structure <GH_Point>(); GH_Structure <GH_Point> gsetUser = new GH_Structure <GH_Point>(); GH_Structure <GH_Rectangle> recsUser = new GH_Structure <GH_Rectangle>(); GH_Structure <GH_String> gtype = new GH_Structure <GH_String>(); GH_Structure <IGH_GeometricGoo> gGoo = new GH_Structure <IGH_GeometricGoo>(); ///Loop through each layer. Layers usually occur in Geodatabase GDB format. SHP usually has only one layer. for (int iLayer = 0; iLayer < dataSource.GetLayerCount(); iLayer++) { OSGeo.OGR.Layer layer = dataSource.GetLayerByIndex(iLayer); if (layer == null) { Console.WriteLine($"Couldn't fetch advertised layer {iLayer}"); System.Environment.Exit(-1); } long count = layer.GetFeatureCount(1); int featureCount = System.Convert.ToInt32(count); AddRuntimeMessage(GH_RuntimeMessageLevel.Remark, $"Layer #{iLayer} {layer.GetName()} has {featureCount} features"); ///Get the spatial reference of the input vector file and set to WGS84 if not known /// OSGeo.OSR.SpatialReference sourceSRS = new SpatialReference(Osr.SRS_WKT_WGS84); string spatialReference = GetSpatialReference(layer, iLayer, dataSource, sourceSRS); spatialReferences.Append(new GH_String(spatialReference), new GH_Path(iLayer)); ///Set transform from input spatial reference to Rhino spatial reference ///TODO: look into adding a step for transforming to CRS set in SetCRS OSGeo.OSR.SpatialReference rhinoSRS = new OSGeo.OSR.SpatialReference(""); rhinoSRS.SetWellKnownGeogCS("WGS84"); ///TODO: verify the userSRS is valid ///TODO: use this as override of global SetSRS OSGeo.OSR.SpatialReference userSRS = new OSGeo.OSR.SpatialReference(""); userSRS.SetFromUserInput(userSRStext); ///These transforms move and scale in order to go from userSRS to XYZ and vice versa Transform userSRSToModelTransform = Heron.Convert.GetUserSRSToModelTransform(userSRS); Transform modelToUserSRSTransform = Heron.Convert.GetModelToUserSRSTransform(userSRS); Transform sourceToModelSRSTransform = Heron.Convert.GetUserSRSToModelTransform(sourceSRS); Transform modelToSourceSRSTransform = Heron.Convert.GetModelToUserSRSTransform(sourceSRS); ///Get OGR envelope of the data in the layer in the sourceSRS OSGeo.OGR.Envelope ext = new OSGeo.OGR.Envelope(); layer.GetExtent(ext, 1); OSGeo.OGR.Geometry extMinSourceOgr = new OSGeo.OGR.Geometry(wkbGeometryType.wkbPoint); extMinSourceOgr.AddPoint(ext.MinX, ext.MinY, 0.0); extMinSourceOgr.AssignSpatialReference(sourceSRS); OSGeo.OGR.Geometry extMaxSourceOgr = new OSGeo.OGR.Geometry(wkbGeometryType.wkbPoint); extMaxSourceOgr.AddPoint(ext.MaxX, ext.MaxY, 0.0); extMaxSourceOgr.AssignSpatialReference(sourceSRS); ///Get extents in Rhino SRS Point3d extPTmin = Heron.Convert.OgrPointToPoint3d(extMinSourceOgr, sourceToModelSRSTransform); Point3d extPTmax = Heron.Convert.OgrPointToPoint3d(extMaxSourceOgr, sourceToModelSRSTransform); Rectangle3d rec = new Rectangle3d(Plane.WorldXY, extPTmin, extPTmax); recs.Append(new GH_Rectangle(rec), new GH_Path(iLayer)); ///Get extents in userSRS ///Can give odd results if crosses 180 longitude extMinSourceOgr.TransformTo(userSRS); extMaxSourceOgr.TransformTo(userSRS); Point3d extPTminUser = Heron.Convert.OgrPointToPoint3d(extMinSourceOgr, userSRSToModelTransform); Point3d extPTmaxUser = Heron.Convert.OgrPointToPoint3d(extMaxSourceOgr, userSRSToModelTransform); Rectangle3d recUser = new Rectangle3d(Plane.WorldXY, extPTminUser, extPTmaxUser); recsUser.Append(new GH_Rectangle(recUser), new GH_Path(iLayer)); if (boundary.Count == 0 && cropIt == true) { AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "Define a boundary or set cropIt to False"); } else if (boundary.Count == 0 && cropIt == false) { AddRuntimeMessage(GH_RuntimeMessageLevel.Remark, "Clipping boundary has not been defined. File extents will be used instead"); boundary.Add(rec.ToNurbsCurve()); } ///Loop through input boundaries for (int i = 0; i < boundary.Count; i++) { OSGeo.OGR.FeatureDefn def = layer.GetLayerDefn(); ///Get the field names List <string> fieldnames = new List <string>(); for (int iAttr = 0; iAttr < def.GetFieldCount(); iAttr++) { OSGeo.OGR.FieldDefn fdef = def.GetFieldDefn(iAttr); fnames.Append(new GH_String(fdef.GetNameRef()), new GH_Path(i, iLayer)); } ///Check if boundary is contained in extent if (!rec.IsValid || ((rec.Height == 0) && (rec.Width == 0))) { ///Get field data if even if no geometry is present in the layer AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "One or more vector datasource bounds are not valid."); OSGeo.OGR.Feature feat; int m = 0; while ((feat = layer.GetNextFeature()) != null) { ///Loop through field values for (int iField = 0; iField < feat.GetFieldCount(); iField++) { OSGeo.OGR.FieldDefn fdef = def.GetFieldDefn(iField); fset.Append(new GH_String(feat.GetFieldAsString(iField)), new GH_Path(i, iLayer, m)); fdef.Dispose(); } m++; feat.Dispose(); } } else if (boundary[i] == null) { AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "Clipping boundary " + i + " not set."); } else if (!boundary[i].IsValid) { AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "Clipping boundary " + i + " is not valid."); } else if (rec.IsValid && Curve.PlanarClosedCurveRelationship(rec.ToNurbsCurve(), boundary[i], Plane.WorldXY, Rhino.RhinoDoc.ActiveDoc.ModelAbsoluteTolerance) == RegionContainment.Disjoint) { AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "One or more clipping boundaries may be outside the bounds of the vector datasource."); } else { ///Create bounding box for clipping geometry Point3d min = boundary[i].GetBoundingBox(true).Min; Point3d max = boundary[i].GetBoundingBox(true).Max; min.Transform(modelToSourceSRSTransform); max.Transform(modelToSourceSRSTransform); double[] minpT = new double[3]; double[] maxpT = new double[3]; minpT[0] = min.X; minpT[1] = min.Y; minpT[2] = min.Z; maxpT[0] = max.X; maxpT[1] = max.Y; maxpT[2] = max.Z; OSGeo.OGR.Geometry ebbox = OSGeo.OGR.Geometry.CreateFromWkt("POLYGON((" + minpT[0] + " " + minpT[1] + ", " + minpT[0] + " " + maxpT[1] + ", " + maxpT[0] + " " + maxpT[1] + ", " + maxpT[0] + " " + minpT[1] + ", " + minpT[0] + " " + minpT[1] + "))"); ///Create bounding box for clipping geometry ///Not working on MVT type files //boundary[i].Transform(modelToSourceSRSTransform); //OSGeo.OGR.Geometry ebbox = Heron.Convert.CurveToOgrPolygon(boundary[i]); ///Clip Shapefile ///http://pcjericks.github.io/py-gdalogr-cookbook/vector_layers.html OSGeo.OGR.Layer clipped_layer = layer; if (cropIt) { clipped_layer.SetSpatialFilter(ebbox); } ///Loop through geometry OSGeo.OGR.Feature feat; def = clipped_layer.GetLayerDefn(); int m = 0; while ((feat = clipped_layer.GetNextFeature()) != null) { OSGeo.OGR.Geometry geom = feat.GetGeometryRef(); OSGeo.OGR.Geometry sub_geom; OSGeo.OGR.Geometry geomUser = feat.GetGeometryRef().Clone(); OSGeo.OGR.Geometry sub_geomUser; ///reproject geometry to WGS84 and userSRS ///TODO: look into using the SetCRS global variable here if (geom.GetSpatialReference() == null) { geom.AssignSpatialReference(sourceSRS); } if (geomUser.GetSpatialReference() == null) { geomUser.AssignSpatialReference(sourceSRS); } geom.TransformTo(rhinoSRS); geomUser.TransformTo(userSRS); gtype.Append(new GH_String(geom.GetGeometryName()), new GH_Path(i, iLayer, m)); if (feat.GetGeometryRef() != null) { ///Convert GDAL geometries to IGH_GeometricGoo gGoo.AppendRange(Heron.Convert.OgrGeomToGHGoo(geomUser, userSRSToModelTransform), new GH_Path(i, iLayer, m)); /// Get Feature Values if (fset.PathExists(new GH_Path(i, iLayer, m))) { fset.get_Branch(new GH_Path(i, iLayer, m)).Clear(); } for (int iField = 0; iField < feat.GetFieldCount(); iField++) { OSGeo.OGR.FieldDefn fdef = def.GetFieldDefn(iField); if (feat.IsFieldSet(iField)) { fset.Append(new GH_String(feat.GetFieldAsString(iField)), new GH_Path(i, iLayer, m)); } else { fset.Append(new GH_String("null"), new GH_Path(i, iLayer, m)); } } ///End get Feature Values ///Start get points if open polylines and points for (int gpc = 0; gpc < geom.GetPointCount(); gpc++) { ///Loop through geometry points for Rhino SRS double[] ogrPt = new double[3]; geom.GetPoint(gpc, ogrPt); Point3d pt3D = new Point3d(ogrPt[0], ogrPt[1], ogrPt[2]); pt3D.Transform(Heron.Convert.WGSToXYZTransform()); gset.Append(new GH_Point(pt3D), new GH_Path(i, iLayer, m)); ///Loop through geometry points for User SRS double[] ogrPtUser = new double[3]; geomUser.GetPoint(gpc, ogrPtUser); Point3d pt3DUser = new Point3d(ogrPtUser[0], ogrPtUser[1], ogrPtUser[2]); pt3DUser.Transform(userSRSToModelTransform); gsetUser.Append(new GH_Point(pt3DUser), new GH_Path(i, iLayer, m)); ///End loop through geometry points /// Get Feature Values if (fset.PathExists(new GH_Path(i, iLayer, m))) { fset.get_Branch(new GH_Path(i, iLayer, m)).Clear(); } for (int iField = 0; iField < feat.GetFieldCount(); iField++) { OSGeo.OGR.FieldDefn fdef = def.GetFieldDefn(iField); if (feat.IsFieldSet(iField)) { fset.Append(new GH_String(feat.GetFieldAsString(iField)), new GH_Path(i, iLayer, m)); } else { fset.Append(new GH_String("null"), new GH_Path(i, iLayer, m)); } } ///End Get Feature Values } ///End getting points if open polylines or points ///Start getting points if closed polylines and multipolygons for (int gi = 0; gi < geom.GetGeometryCount(); gi++) { sub_geom = geom.GetGeometryRef(gi); OSGeo.OGR.Geometry subsub_geom; sub_geomUser = geomUser.GetGeometryRef(gi); OSGeo.OGR.Geometry subsub_geomUser; if (sub_geom.GetGeometryCount() > 0) { for (int n = 0; n < sub_geom.GetGeometryCount(); n++) { subsub_geom = sub_geom.GetGeometryRef(n); subsub_geomUser = sub_geomUser.GetGeometryRef(n); for (int ptnum = 0; ptnum < subsub_geom.GetPointCount(); ptnum++) { ///Loop through geometry points double[] ogrPt = new double[3]; subsub_geom.GetPoint(ptnum, ogrPt); Point3d pt3D = new Point3d(ogrPt[0], ogrPt[1], ogrPt[2]); pt3D.Transform(Heron.Convert.WGSToXYZTransform()); gset.Append(new GH_Point(pt3D), new GH_Path(i, iLayer, m, gi, n)); ///Loop through geometry points for User SRS double[] ogrPtUser = new double[3]; subsub_geomUser.GetPoint(ptnum, ogrPtUser); Point3d pt3DUser = new Point3d(ogrPtUser[0], ogrPtUser[1], ogrPtUser[2]); pt3DUser.Transform(userSRSToModelTransform); gsetUser.Append(new GH_Point(pt3DUser), new GH_Path(i, iLayer, m, gi, n)); ///End loop through geometry points } subsub_geom.Dispose(); subsub_geomUser.Dispose(); } } else { for (int ptnum = 0; ptnum < sub_geom.GetPointCount(); ptnum++) { ///Loop through geometry points double[] ogrPt = new double[3]; sub_geom.GetPoint(ptnum, ogrPt); Point3d pt3D = new Point3d(ogrPt[0], ogrPt[1], ogrPt[2]); pt3D.Transform(Heron.Convert.WGSToXYZTransform()); gset.Append(new GH_Point(pt3D), new GH_Path(i, iLayer, m, gi)); ///Loop through geometry points for User SRS double[] ogrPtUser = new double[3]; sub_geomUser.GetPoint(ptnum, ogrPtUser); Point3d pt3DUser = new Point3d(ogrPtUser[0], ogrPtUser[1], ogrPtUser[2]); pt3DUser.Transform(userSRSToModelTransform); gsetUser.Append(new GH_Point(pt3DUser), new GH_Path(i, iLayer, m, gi)); ///End loop through geometry points } } sub_geom.Dispose(); sub_geomUser.Dispose(); /// Get Feature Values if (fset.PathExists(new GH_Path(i, iLayer, m))) { fset.get_Branch(new GH_Path(i, iLayer, m)).Clear(); } for (int iField = 0; iField < feat.GetFieldCount(); iField++) { OSGeo.OGR.FieldDefn fdef = def.GetFieldDefn(iField); if (feat.IsFieldSet(iField)) { fset.Append(new GH_String(feat.GetFieldAsString(iField)), new GH_Path(i, iLayer, m)); } else { fset.Append(new GH_String("null"), new GH_Path(i, iLayer, m)); } } ///End Get Feature Values } //m++; } m++; geom.Dispose(); geomUser.Dispose(); feat.Dispose(); } ///end while loop through features } ///end clipped layer else statement } ///end loop through boundaries layer.Dispose(); }///end loop through layers dataSource.Dispose(); DA.SetDataTree(0, recs); DA.SetDataTree(1, spatialReferences); DA.SetDataTree(2, fnames); DA.SetDataTree(3, fset); DA.SetDataTree(4, gset); DA.SetDataTree(5, gsetUser); DA.SetDataTree(6, recsUser); DA.SetDataTree(7, gGoo); DA.SetDataTree(8, gtype); }
public static bool CovertRegion2Line(string path, string savePath) { try { OSGeo.OGR.Ogr.RegisterAll(); OSGeo.OGR.Driver dr = OSGeo.OGR.Ogr.GetDriverByName("ESRI shapefile"); if (dr == null) { Console.WriteLine("启动驱动失败!\n"); } OSGeo.OGR.DataSource ds = dr.Open(path, 0); int layerCount = ds.GetLayerCount(); OSGeo.OGR.Layer layer = ds.GetLayerByIndex(0); FeatureDefn fdf = layer.GetLayerDefn(); int fieldCount = fdf.GetFieldCount(); // 创建数据源 DataSource oDS = dr.CreateDataSource(savePath, null); if (oDS == null) { Console.WriteLine("创建矢量文件【%s】失败!\n", savePath); return(false); } OSGeo.OSR.SpatialReference srs = layer.GetSpatialRef(); // 创建图层,创建一个多边形图层,这里没有指定空间参考,如果需要的话,需要在这里进行指定 Layer oLayer = oDS.CreateLayer("line", srs, OSGeo.OGR.wkbGeometryType.wkbMultiLineString, null); if (oLayer == null) { Console.WriteLine("图层创建失败!\n"); return(false); } for (int i = 0; i < fieldCount; i++) { FieldDefn fieldDefn = fdf.GetFieldDefn(i); oLayer.CreateField(fieldDefn, 1); } FeatureDefn oDefn = oLayer.GetLayerDefn(); OSGeo.OGR.Feature feat; while ((feat = layer.GetNextFeature()) != null) { Feature oFeatureMulty = new Feature(oDefn); OSGeo.OGR.Geometry geometry = feat.GetGeometryRef(); for (int i = 0; i < fieldCount; i++) { string value = feat.GetFieldAsString(i); oFeatureMulty.SetField(i, value); } OSGeo.OGR.wkbGeometryType goetype = geometry.GetGeometryType(); if (goetype == OSGeo.OGR.wkbGeometryType.wkbPolygon) { Geometry tempGeo = new Geometry(wkbGeometryType.wkbMultiLineString); int count = geometry.GetGeometryCount(); for (int j = 0; j < count; j++) { Geometry line = new Geometry(wkbGeometryType.wkbLinearRing); Geometry geo = geometry.GetGeometryRef(j); for (int i = 0; i < geo.GetPointCount(); i++) { double x = geo.GetX(i); double y = geo.GetY(i); line.AddPoint(x, y, 0); } tempGeo.AddGeometryDirectly(line); } oFeatureMulty.SetGeometry(tempGeo); } oLayer.SetFeature(oFeatureMulty); } oLayer.Dispose(); layer.Dispose(); oDS.Dispose(); ds.Dispose(); dr.Dispose(); } catch { } return(false); }
/// <summary> /// 转换并纠偏,只使用与火星坐标纠偏 /// </summary> /// <param name="dataTable">数据表,如果是点表中含X,Y字段,如果是线和面,表中含有PATH字段</param> /// <param name="filePath">存储路径</param> /// <param name="geoType">数据类型,暂时支持简单的点线面</param> //public static void saveShpFile(DataTable dataTable,string filePath,wkbGeometryType geoType) //{ // saveShpFile(dataTable, filePath, geoType, ProjectConvert.GCJ_WGS); //} /// <summary> /// 导出shp数据到表格 /// </summary> /// <param name="path">文件路径</param> /// <returns>DataTable</returns> public static DataTable GetData(string path) { try { OSGeo.OGR.Ogr.RegisterAll(); OSGeo.OGR.Driver dr = OSGeo.OGR.Ogr.GetDriverByName("ESRI shapefile"); if (dr == null) { Console.WriteLine("启动驱动失败!\n"); } OSGeo.OGR.DataSource ds = dr.Open(path, 0); int layerCount = ds.GetLayerCount(); OSGeo.OGR.Layer layer = ds.GetLayerByIndex(0); DataTable dataTable = new DataTable(); FeatureDefn fdf = layer.GetLayerDefn(); int fieldCount = fdf.GetFieldCount(); for (int i = 0; i < fieldCount; i++) { dataTable.Columns.Add(fdf.GetFieldDefn(i).GetName(), Type.GetType("System.String")); } if (fdf.GetGeomType() == OSGeo.OGR.wkbGeometryType.wkbPoint) { if (!dataTable.Columns.Contains("X")) { dataTable.Columns.Add("X", Type.GetType("System.String")); } if (!dataTable.Columns.Contains("Y")) { dataTable.Columns.Add("Y", Type.GetType("System.String")); } } else if (fdf.GetGeomType() == OSGeo.OGR.wkbGeometryType.wkbPolygon || fdf.GetGeomType() == OSGeo.OGR.wkbGeometryType.wkbLineString) { if (!dataTable.Columns.Contains("PATH")) { dataTable.Columns.Add("PATH", Type.GetType("System.String")); } } OSGeo.OGR.Feature feat; while ((feat = layer.GetNextFeature()) != null) { DataRow row = dataTable.NewRow(); OSGeo.OGR.Geometry geometry = feat.GetGeometryRef(); for (int i = 0; i < fieldCount; i++) { string value = feat.GetFieldAsString(i); row[i] = value.Replace(",", ""); } OSGeo.OGR.wkbGeometryType goetype = geometry.GetGeometryType(); if (goetype == OSGeo.OGR.wkbGeometryType.wkbPoint) { double x = geometry.GetX(0); double y = geometry.GetY(0); row["X"] = x.ToString(); row["Y"] = y.ToString(); } else if (goetype == OSGeo.OGR.wkbGeometryType.wkbLineString) { string points = ""; for (int i = 0; i < geometry.GetPointCount(); i++) { double x = geometry.GetX(i); double y = geometry.GetY(i); points += x.ToString() + "|" + y.ToString() + ";"; } if (points != "") { points.Substring(0, points.Length - 1); } row["PATH"] = points; } else if (goetype == OSGeo.OGR.wkbGeometryType.wkbPolygon) { int count = geometry.GetGeometryCount(); string points = ""; for (int j = 0; j < count; j++) { Geometry geo = geometry.GetGeometryRef(j); for (int i = 0; i < geo.GetPointCount(); i++) { double x = geo.GetX(i); double y = geo.GetY(i); points += x.ToString() + "|" + y.ToString() + ";"; } if (points != "") { points.Substring(0, points.Length - 1); } points += "|"; } if (points != "") { points.Substring(0, points.Length - 1); } row["PATH"] = points; } } layer.Dispose(); ds.Dispose(); dr.Dispose(); return(dataTable); } catch { return(null); } }
/// <summary> /// This is the method that actually does the work. /// </summary> /// <param name="DA">The DA object is used to retrieve from inputs and store in outputs.</param> protected override void SolveInstance(IGH_DataAccess DA) { Curve boundary = null; DA.GetData <Curve>(0, ref boundary); int zoom = -1; DA.GetData <int>(1, ref zoom); string filePath = string.Empty; DA.GetData <string>(2, ref filePath); if (!filePath.EndsWith(@"\")) { filePath = filePath + @"\"; } string prefix = string.Empty; DA.GetData <string>(3, ref prefix); if (prefix == "") { prefix = mbSource; } string URL = mbURL; string mbToken = string.Empty; DA.GetData <string>(4, ref mbToken); if (mbToken == "") { string hmbToken = System.Environment.GetEnvironmentVariable("HERONMAPBOXTOKEN"); if (hmbToken != null) { mbToken = hmbToken; AddRuntimeMessage(GH_RuntimeMessageLevel.Remark, "Using Mapbox token stored in Environment Variable HERONMAPBOXTOKEN."); } else { AddRuntimeMessage(GH_RuntimeMessageLevel.Error, "No Mapbox token is specified. Please get a valid token from mapbox.com"); return; } } bool run = false; DA.GetData <bool>("Run", ref run); ///GDAL setup RESTful.GdalConfiguration.ConfigureOgr(); OSGeo.OGR.Ogr.RegisterAll(); RESTful.GdalConfiguration.ConfigureGdal(); GH_Curve imgFrame; GH_String tCount; GH_Structure <GH_String> fnames = new GH_Structure <GH_String>(); GH_Structure <GH_String> fvalues = new GH_Structure <GH_String>(); GH_Structure <IGH_GeometricGoo> gGoo = new GH_Structure <IGH_GeometricGoo>(); GH_Structure <GH_String> gtype = new GH_Structure <GH_String>(); GH_Structure <IGH_GeometricGoo> gGooBuildings = new GH_Structure <IGH_GeometricGoo>(); int tileTotalCount = 0; int tileDownloadedCount = 0; ///Get image frame for given boundary if (!boundary.GetBoundingBox(true).IsValid) { AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "Boundary is not valid."); return; } BoundingBox boundaryBox = boundary.GetBoundingBox(true); //create cache folder for vector tiles string cacheLoc = filePath + @"HeronCache\"; List <string> cachefilePaths = new List <string>(); if (!Directory.Exists(cacheLoc)) { Directory.CreateDirectory(cacheLoc); } //tile bounding box array List <Point3d> boxPtList = new List <Point3d>(); //get the tile coordinates for all tiles within boundary var ranges = Convert.GetTileRange(boundaryBox, zoom); var x_range = ranges.XRange; var y_range = ranges.YRange; if (x_range.Length > 100 || y_range.Length > 100) { AddRuntimeMessage(GH_RuntimeMessageLevel.Error, "This tile range is too big (more than 100 tiles in the x or y direction). Check your units."); return; } ///cycle through tiles to get bounding box List <Polyline> tileExtents = new List <Polyline>(); List <double> tileHeight = new List <double>(); List <double> tileWidth = new List <double>(); for (int y = (int)y_range.Min; y <= y_range.Max; y++) { for (int x = (int)x_range.Min; x <= x_range.Max; x++) { //add bounding box of tile to list for translation Polyline tileExtent = Heron.Convert.GetTileAsPolygon(zoom, y, x); tileExtents.Add(tileExtent); tileWidth.Add(tileExtent[0].DistanceTo(tileExtent[1])); tileHeight.Add(tileExtent[1].DistanceTo(tileExtent[2])); boxPtList.AddRange(tileExtent.ToList()); cachefilePaths.Add(cacheLoc + mbSource.Replace(" ", "") + zoom + "-" + x + "-" + y + ".mvt"); tileTotalCount = tileTotalCount + 1; } } tCount = new GH_String(tileTotalCount + " tiles (" + tileDownloadedCount + " downloaded / " + (tileTotalCount - tileDownloadedCount) + " cached)"); ///bounding box of tile boundaries BoundingBox bboxPts = new BoundingBox(boxPtList); ///convert bounding box to polyline List <Point3d> imageCorners = bboxPts.GetCorners().ToList(); imageCorners.Add(imageCorners[0]); imgFrame = new GH_Curve(new Rhino.Geometry.Polyline(imageCorners).ToNurbsCurve()); ///tile range as string for (de)serialization of TileCacheMeta string tileRangeString = "Tile range for zoom " + zoom.ToString() + ": " + x_range[0].ToString() + "-" + y_range[0].ToString() + " to " + x_range[1].ToString() + "-" + y_range[1].ToString(); AddRuntimeMessage(GH_RuntimeMessageLevel.Remark, tileRangeString); ///Query Mapbox URL ///download all tiles within boundary ///API to query string mbURLauth = mbURL + mbToken; if (run == true) { for (int y = (int)y_range.Min; y <= (int)y_range.Max; y++) { for (int x = (int)x_range.Min; x <= (int)x_range.Max; x++) { //create tileCache name string tileCache = mbSource.Replace(" ", "") + zoom + "-" + x + "-" + y + ".mvt"; string tileCacheLoc = cacheLoc + tileCache; //check cache folder to see if tile image exists locally if (File.Exists(tileCacheLoc)) { } else { string urlAuth = Heron.Convert.GetZoomURL(x, y, zoom, mbURLauth); System.Net.WebClient client = new System.Net.WebClient(); client.DownloadFile(urlAuth, tileCacheLoc); client.Dispose(); ///https://gdal.org/development/rfc/rfc59.1_utilities_as_a_library.html ///http://osgeo-org.1560.x6.nabble.com/gdal-dev-How-to-convert-shapefile-to-geojson-using-c-bindings-td5390953.html#a5391028 ///ogr2ogr is slow //OSGeo.GDAL.Dataset httpDS = OSGeo.GDAL.Gdal.OpenEx("MVT:"+urlAuth,4,null,null,null); //var transOptions = new OSGeo.GDAL.GDALVectorTranslateOptions(new[] { "-s_srs","EPSG:3857", "-t_srs", "EPSG:4326","-skipfailures" }); //var transDS = OSGeo.GDAL.Gdal.wrapper_GDALVectorTranslateDestName(mvtLoc + zoom + "-" + x + "-" + y , httpDS, transOptions, null, null); //httpDS.Dispose(); //transDS.Dispose(); tileDownloadedCount = tileDownloadedCount + 1; } } } } //add to tile count total tCount = new GH_String(tileTotalCount + " tiles (" + tileDownloadedCount + " downloaded / " + (tileTotalCount - tileDownloadedCount) + " cached)"); AddRuntimeMessage(GH_RuntimeMessageLevel.Remark, tCount.ToString()); ///Build a VRT file ///https://stackoverflow.com/questions/55386597/gdal-c-sharp-wrapper-for-vrt-doesnt-write-a-vrt-file //string vrtFile = cacheLoc + "mapboxvector.vrt"; //AddRuntimeMessage(GH_RuntimeMessageLevel.Remark, vrtFile); //var vrtOptions = new OSGeo.GDAL.GDALBuildVRTOptions(new[] { "-overwrite" }); //var vrtDataset = OSGeo.GDAL.Gdal.wrapper_GDALBuildVRT_names(vrtFile, cachefilePaths.ToArray(), vrtOptions, null, null); //vrtDataset.Dispose(); ///Set transform from input spatial reference to Rhino spatial reference ///TODO: look into adding a step for transforming to CRS set in SetCRS OSGeo.OSR.SpatialReference rhinoSRS = new OSGeo.OSR.SpatialReference(""); rhinoSRS.SetWellKnownGeogCS("WGS84"); ///TODO: verify the userSRS is valid ///TODO: use this as override of global SetSRS OSGeo.OSR.SpatialReference userSRS = new OSGeo.OSR.SpatialReference(""); //userSRS.SetFromUserInput(userSRStext); userSRS.SetFromUserInput("WGS84"); OSGeo.OSR.SpatialReference sourceSRS = new SpatialReference(""); sourceSRS.SetFromUserInput("EPSG:3857"); ///These transforms move and scale in order to go from userSRS to XYZ and vice versa Transform userSRSToModelTransform = Heron.Convert.GetUserSRSToModelTransform(userSRS); Transform modelToUserSRSTransform = Heron.Convert.GetModelToUserSRSTransform(userSRS); Transform sourceToModelSRSTransform = Heron.Convert.GetUserSRSToModelTransform(sourceSRS); Transform modelToSourceSRSTransform = Heron.Convert.GetModelToUserSRSTransform(sourceSRS); //OSGeo.GDAL.Driver gdalOGR = OSGeo.GDAL.Gdal.GetDriverByName("VRT"); //var ds = OSGeo.GDAL.Gdal.OpenEx(vrtFile, 4, ["VRT","MVT"], null, null); int t = 0; foreach (string mvtTile in cachefilePaths)// cachefilePaths) { OSGeo.OGR.Driver drv = OSGeo.OGR.Ogr.GetDriverByName("MVT"); OSGeo.OGR.DataSource ds = OSGeo.OGR.Ogr.Open("MVT:" + mvtTile, 0); string[] mvtOptions = new[] { "CLIP", "NO" }; //OSGeo.OGR.DataSource ds = drv.Open(mvtTile, 0); if (ds == null) { AddRuntimeMessage(GH_RuntimeMessageLevel.Error, "The vector datasource was unreadable by this component. It may not a valid file type for this component or otherwise null/empty."); return; } ///Morph raw mapbox tile points to geolocated tile Vector3d moveDir = tileExtents[t].ElementAt(0) - new Point3d(0, 0, 0); Transform move = Transform.Translation(moveDir); Transform scale = Transform.Scale(Plane.WorldXY, tileWidth[t] / 4096, tileHeight[t] / 4096, 1); Transform scaleMove = Transform.Multiply(move, scale); for (int iLayer = 0; iLayer < ds.GetLayerCount(); iLayer++) { OSGeo.OGR.Layer layer = ds.GetLayerByIndex(iLayer); long count = layer.GetFeatureCount(1); int featureCount = System.Convert.ToInt32(count); AddRuntimeMessage(GH_RuntimeMessageLevel.Remark, "Layer #" + iLayer + " " + layer.GetName() + " has " + featureCount + " features"); //if (layer.GetName() == "admin" || layer.GetName() == "building") //{ OSGeo.OGR.FeatureDefn def = layer.GetLayerDefn(); ///Get the field names List <string> fieldnames = new List <string>(); for (int iAttr = 0; iAttr < def.GetFieldCount(); iAttr++) { OSGeo.OGR.FieldDefn fdef = def.GetFieldDefn(iAttr); fnames.Append(new GH_String(fdef.GetNameRef()), new GH_Path(iLayer, t)); } ///Loop through geometry OSGeo.OGR.Feature feat; int m = 0; ///error "Self-intersection at or near point..." when zoom gets below 12 for water ///this is an issue with the way mvt simplifies geometries at lower zoom levels and is a known problem ///TODO: look into how to fix invalid geom and return to the typical while loop iterating method //while ((feat = layer.GetNextFeature()) != null) while (true) { try { feat = layer.GetNextFeature(); } catch { AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "Some features had invalid geometry and were skipped."); continue; } if (feat == null) { break; } OSGeo.OGR.Geometry geom = feat.GetGeometryRef(); ///reproject geometry to WGS84 and userSRS ///TODO: look into using the SetCRS global variable here gtype.Append(new GH_String(geom.GetGeometryName()), new GH_Path(iLayer, t, m)); Transform tr = scaleMove; // new Transform(1); if (feat.GetGeometryRef() != null) { ///Convert GDAL geometries to IGH_GeometricGoo foreach (IGH_GeometricGoo gMorphed in Heron.Convert.OgrGeomToGHGoo(geom, tr)) { //gMorphed.Morph(morph); gGoo.Append(gMorphed, new GH_Path(iLayer, t, m)); } if (layer.GetName() == "building") { if (feat.GetFieldAsString(def.GetFieldIndex("extrude")) == "true") { double unitsConversion = Rhino.RhinoMath.UnitScale(Rhino.RhinoDoc.ActiveDoc.ModelUnitSystem, Rhino.UnitSystem.Meters); double height = System.Convert.ToDouble(feat.GetFieldAsString(def.GetFieldIndex("height"))) / unitsConversion; double min_height = System.Convert.ToDouble(feat.GetFieldAsString(def.GetFieldIndex("min_height"))) / unitsConversion; bool underground = System.Convert.ToBoolean(feat.GetFieldAsString(def.GetFieldIndex("underground"))); if (geom.GetGeometryType() == wkbGeometryType.wkbPolygon) { Extrusion bldg = Heron.Convert.OgrPolygonToExtrusion(geom, tr, height, min_height, underground); IGH_GeometricGoo bldgGoo = GH_Convert.ToGeometricGoo(bldg); gGooBuildings.Append(bldgGoo, new GH_Path(iLayer, t, m)); } if (geom.GetGeometryType() == wkbGeometryType.wkbMultiPolygon) { List <Extrusion> bldgs = Heron.Convert.OgrMultiPolyToExtrusions(geom, tr, height, min_height, underground); foreach (Extrusion bldg in bldgs) { IGH_GeometricGoo bldgGoo = GH_Convert.ToGeometricGoo(bldg); gGooBuildings.Append(bldgGoo, new GH_Path(iLayer, t, m)); } } } } /// Get Feature Values if (fvalues.PathExists(new GH_Path(iLayer, t, m))) { //fvalues.get_Branch(new GH_Path(iLayer, t, m)).Clear(); } for (int iField = 0; iField < feat.GetFieldCount(); iField++) { OSGeo.OGR.FieldDefn fdef = def.GetFieldDefn(iField); if (feat.IsFieldSet(iField)) { fvalues.Append(new GH_String(feat.GetFieldAsString(iField)), new GH_Path(iLayer, t, m)); } else { fvalues.Append(new GH_String("null"), new GH_Path(iLayer, t, m)); } } } m++; geom.Dispose(); feat.Dispose(); }///end while loop through features //}///end layer by name layer.Dispose(); }///end loop through layers ds.Dispose(); t++; }///end loop through mvt tiles //write out new tile range metadata for serialization TileCacheMeta = tileRangeString; DA.SetData(0, imgFrame); DA.SetDataTree(1, fnames); DA.SetDataTree(2, fvalues); DA.SetDataTree(3, gGoo); DA.SetDataList(4, "copyright Mapbox"); DA.SetDataTree(5, gtype); DA.SetDataTree(6, gGooBuildings); DA.SetDataList(7, tileExtents); }
protected override void SolveInstance(IGH_DataAccess DA) { List <Curve> boundary = new List <Curve>(); DA.GetDataList <Curve>(0, boundary); string shpFileLoc = ""; DA.GetData <string>("Vector Data Location", ref shpFileLoc); ///GDAL setup ///Some preliminary testing has been done to read SHP, GeoJSON, OSM, KML, MVT, GML and GDB ///It can be spotty with KML, MVT and GML and doesn't throw informative errors. Likely has to do with getting a valid CRS and ///TODO: resolve errors with reading KML, MVT, GML. RESTful.GdalConfiguration.ConfigureOgr(); OSGeo.OGR.Ogr.RegisterAll(); OSGeo.OGR.Driver drv = OSGeo.OGR.Ogr.GetDriverByName("ESRI Shapefile"); OSGeo.OGR.DataSource ds = OSGeo.OGR.Ogr.Open(shpFileLoc, 0); if (ds == null) { AddRuntimeMessage(GH_RuntimeMessageLevel.Error, "The vector datasource was unreadable by this component. It may not a valid file type for this component or otherwise null/empty."); return; } List <OSGeo.OGR.Layer> layerset = new List <OSGeo.OGR.Layer>(); List <int> fc = new List <int>(); for (int iLayer = 0; iLayer < ds.GetLayerCount(); iLayer++) { OSGeo.OGR.Layer layer = ds.GetLayerByIndex(iLayer); if (layer == null) { Console.WriteLine("Couldn't fetch advertised layer " + iLayer); System.Environment.Exit(-1); } else { layerset.Add(layer); } } ///Declare trees GH_Structure <GH_String> layname = new GH_Structure <GH_String>(); GH_Structure <GH_Integer> fcs = new GH_Structure <GH_Integer>(); GH_Structure <GH_Rectangle> recs = new GH_Structure <GH_Rectangle>(); GH_Structure <GH_String> sRefs = new GH_Structure <GH_String>(); GH_Structure <GH_String> fnames = new GH_Structure <GH_String>(); GH_Structure <GH_String> fset = new GH_Structure <GH_String>(); GH_Structure <GH_Point> gset = new GH_Structure <GH_Point>(); ///Loop through each layer. Layers usually occur in Geodatabase GDB format. SHP usually has only one layer. for (int iLayer = 0; iLayer < ds.GetLayerCount(); iLayer++) { OSGeo.OGR.Layer layer = ds.GetLayerByIndex(iLayer); if (layer == null) { Console.WriteLine("Couldn't fetch advertised layer " + iLayer); System.Environment.Exit(-1); } long count = layer.GetFeatureCount(1); int featureCount = System.Convert.ToInt32(count); fcs.Append(new GH_Integer(featureCount), new GH_Path(iLayer)); layname.Append(new GH_String(layer.GetName()), new GH_Path(iLayer)); ///Get OGR envelope of the data in the layer OSGeo.OGR.Envelope ext = new OSGeo.OGR.Envelope(); layer.GetExtent(ext, 1); Point3d extMin = new Point3d(); Point3d extMax = new Point3d(); extMin.X = ext.MinX; extMin.Y = ext.MinY; extMax.X = ext.MaxX; extMax.Y = ext.MaxY; ///Get the spatial reference of the input vector file and set to WGS84 if not known OSGeo.OSR.SpatialReference sr = new SpatialReference(Osr.SRS_WKT_WGS84); string sRef = ""; if (layer.GetSpatialRef() == null) { AddRuntimeMessage(GH_RuntimeMessageLevel.Remark, "Coordinate Reference System (CRS) is missing. CRS set automatically set to WGS84."); sr.ImportFromXML(shpFileLoc); string pretty = ""; sr.ExportToPrettyWkt(out pretty, 0); AddRuntimeMessage(GH_RuntimeMessageLevel.Remark, pretty); sr.SetWellKnownGeogCS("WGS84"); sRef = "Coordinate Reference System (CRS) is missing. CRS set automatically set to WGS84."; //sr.ImportFromEPSG(2263); } else { if (layer.GetSpatialRef().Validate() != 0) { AddRuntimeMessage(GH_RuntimeMessageLevel.Remark, "Coordinate Reference System (CRS) is unknown or unsupported. CRS set automatically set to WGS84."); sr.SetWellKnownGeogCS("WGS84"); sRef = "Coordinate Reference System (CRS) is unknown or unsupported. SRS set automatically set to WGS84."; } else { AddRuntimeMessage(GH_RuntimeMessageLevel.Remark, "Coordinate Reference System (CRS) set from layer" + iLayer + "."); sr = layer.GetSpatialRef(); sr.ExportToWkt(out sRef); } } sRefs.Append(new GH_String(sRef), new GH_Path(iLayer)); ///Set transform from input spatial reference to Rhino spatial reference ///TODO: look into adding a step for transforming to CRS set in SetCRS OSGeo.OSR.SpatialReference dst = new OSGeo.OSR.SpatialReference(""); dst.SetWellKnownGeogCS("WGS84"); OSGeo.OSR.CoordinateTransformation coordTransform = new OSGeo.OSR.CoordinateTransformation(sr, dst); OSGeo.OSR.CoordinateTransformation revTransform = new OSGeo.OSR.CoordinateTransformation(dst, sr); ///Get bounding box of data in layer double[] extMinPT = new double[3] { extMin.X, extMin.Y, extMin.Z }; double[] extMaxPT = new double[3] { extMax.X, extMax.Y, extMax.Z }; coordTransform.TransformPoint(extMinPT); coordTransform.TransformPoint(extMaxPT); Point3d extPTmin = new Point3d(extMinPT[0], extMinPT[1], extMinPT[2]); Point3d extPTmax = new Point3d(extMaxPT[0], extMaxPT[1], extMaxPT[2]); Rectangle3d rec = new Rectangle3d(Plane.WorldXY, Heron.Convert.ToXYZ(extPTmin), Heron.Convert.ToXYZ(extPTmax)); recs.Append(new GH_Rectangle(rec), new GH_Path(iLayer)); ///Loop through input boundaries for (int i = 0; i < boundary.Count; i++) { OSGeo.OGR.FeatureDefn def = layer.GetLayerDefn(); ///Get the field names List <string> fieldnames = new List <string>(); for (int iAttr = 0; iAttr < def.GetFieldCount(); iAttr++) { OSGeo.OGR.FieldDefn fdef = def.GetFieldDefn(iAttr); fnames.Append(new GH_String(fdef.GetNameRef()), new GH_Path(i, iLayer)); } ///Check if boundary is contained in extent if (!rec.IsValid || ((rec.Height == 0) && (rec.Width == 0))) { AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "One or more vector datasource bounds are not valid."); OSGeo.OGR.Feature feat; int m = 0; while ((feat = layer.GetNextFeature()) != null) { ///Loop through field values for (int iField = 0; iField < feat.GetFieldCount(); iField++) { OSGeo.OGR.FieldDefn fdef = def.GetFieldDefn(iField); fset.Append(new GH_String(feat.GetFieldAsString(iField)), new GH_Path(i, iLayer, m)); fdef.Dispose(); } m++; feat.Dispose(); } } else if (boundary[i] == null) { AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "Clipping boundary " + i + " not set."); } else if (!boundary[i].IsValid) { AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "Clipping boundary " + i + " is not valid."); } else if (rec.IsValid && Curve.PlanarClosedCurveRelationship(rec.ToNurbsCurve(), boundary[i], Plane.WorldXY, Rhino.RhinoDoc.ActiveDoc.ModelAbsoluteTolerance) == RegionContainment.Disjoint) { AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "One or more boundaries may be outside the bounds of the vector datasource."); } else { ///Create bounding box for clipping geometry Point3d min = Heron.Convert.ToWGS(boundary[i].GetBoundingBox(true).Min); Point3d max = Heron.Convert.ToWGS(boundary[i].GetBoundingBox(true).Max); double[] minpT = new double[3]; double[] maxpT = new double[3]; minpT[0] = min.X; minpT[1] = min.Y; minpT[2] = min.Z; maxpT[0] = max.X; maxpT[1] = max.Y; maxpT[2] = max.Z; revTransform.TransformPoint(minpT); revTransform.TransformPoint(maxpT); ///Convert to OGR geometry ///TODO: add conversion from GH geometry to OGR to Convert class OSGeo.OGR.Geometry ebbox = OSGeo.OGR.Geometry.CreateFromWkt("POLYGON((" + minpT[0] + " " + minpT[1] + ", " + minpT[0] + " " + maxpT[1] + ", " + maxpT[0] + " " + maxpT[1] + ", " + maxpT[0] + " " + minpT[1] + ", " + minpT[0] + " " + minpT[1] + "))"); ///Clip Shapefile ///http://pcjericks.github.io/py-gdalogr-cookbook/vector_layers.html ///TODO: allow for polyline/curve as clipper, not just bounding box OSGeo.OGR.Layer clipped_layer = layer; clipped_layer.SetSpatialFilter(ebbox); ///Loop through geometry OSGeo.OGR.Feature feat; def = clipped_layer.GetLayerDefn(); int m = 0; while ((feat = clipped_layer.GetNextFeature()) != null) { OSGeo.OGR.Geometry geom = feat.GetGeometryRef(); OSGeo.OGR.Geometry sub_geom; ///reproject geometry to WGS84 ///TODO: look into using the SetCRS global variable here geom.Transform(coordTransform); if (feat.GetGeometryRef() != null) { ///Start get points if open polylines and points for (int gpc = 0; gpc < geom.GetPointCount(); gpc++) { ///Loop through geometry points double[] pT = new double[3]; pT[0] = geom.GetX(gpc); pT[1] = geom.GetY(gpc); pT[2] = geom.GetZ(gpc); if (Double.IsNaN(geom.GetZ(gpc))) { pT[2] = 0; } //coordTransform.TransformPoint(pT); Point3d pt3D = new Point3d(); pt3D.X = pT[0]; pt3D.Y = pT[1]; pt3D.Z = pT[2]; gset.Append(new GH_Point(Heron.Convert.ToXYZ(pt3D)), new GH_Path(i, iLayer, m)); ///End loop through geometry points /// Get Feature Values if (fset.PathExists(new GH_Path(i, iLayer, m))) { fset.get_Branch(new GH_Path(i, iLayer, m)).Clear(); } for (int iField = 0; iField < feat.GetFieldCount(); iField++) { OSGeo.OGR.FieldDefn fdef = def.GetFieldDefn(iField); if (feat.IsFieldSet(iField)) { fset.Append(new GH_String(feat.GetFieldAsString(iField)), new GH_Path(i, iLayer, m)); } else { fset.Append(new GH_String("null"), new GH_Path(i, iLayer, m)); } } ///End Get Feature Values } ///End getting points if open polylines or points ///Start getting points if closed polylines and multipolygons for (int gi = 0; gi < geom.GetGeometryCount(); gi++) { sub_geom = geom.GetGeometryRef(gi); OSGeo.OGR.Geometry subsub_geom; List <Point3d> geom_list = new List <Point3d>(); ///trouble getting all points. this is a troubleshoot ///gset.Append(new GH_Point(new Point3d(0, 0, sub_geom.GetGeometryCount())), new GH_Path(i, iLayer, m, gi)); if (sub_geom.GetGeometryCount() > 0) { for (int n = 0; n < sub_geom.GetGeometryCount(); n++) { subsub_geom = sub_geom.GetGeometryRef(n); for (int ptnum = 0; ptnum < subsub_geom.GetPointCount(); ptnum++) { ///Loop through geometry points double[] pT = new double[3]; pT[0] = subsub_geom.GetX(ptnum); pT[1] = subsub_geom.GetY(ptnum); pT[2] = subsub_geom.GetZ(ptnum); Point3d pt3D = new Point3d(); pt3D.X = pT[0]; pt3D.Y = pT[1]; pt3D.Z = pT[2]; gset.Append(new GH_Point(Heron.Convert.ToXYZ(pt3D)), new GH_Path(i, iLayer, m, gi, n)); ///End loop through geometry points } subsub_geom.Dispose(); } } else { for (int ptnum = 0; ptnum < sub_geom.GetPointCount(); ptnum++) { ///Loop through geometry points double[] pT = new double[3]; pT[0] = sub_geom.GetX(ptnum); pT[1] = sub_geom.GetY(ptnum); pT[2] = sub_geom.GetZ(ptnum); Point3d pt3D = new Point3d(); pt3D.X = pT[0]; pt3D.Y = pT[1]; pt3D.Z = pT[2]; gset.Append(new GH_Point(Heron.Convert.ToXYZ(pt3D)), new GH_Path(i, iLayer, m, gi)); ///End loop through geometry points } } sub_geom.Dispose(); /// Get Feature Values if (fset.PathExists(new GH_Path(i, iLayer, m))) { fset.get_Branch(new GH_Path(i, iLayer, m)).Clear(); } for (int iField = 0; iField < feat.GetFieldCount(); iField++) { OSGeo.OGR.FieldDefn fdef = def.GetFieldDefn(iField); if (feat.IsFieldSet(iField)) { fset.Append(new GH_String(feat.GetFieldAsString(iField)), new GH_Path(i, iLayer, m)); } else { fset.Append(new GH_String("null"), new GH_Path(i, iLayer, m)); } } ///End Get Feature Values } //m++; } m++; feat.Dispose(); } ///end while loop through features } } //end loop through boundaries layer.Dispose(); }///end loop through layers ds.Dispose(); DA.SetDataTree(0, layname); DA.SetDataTree(1, fcs); DA.SetDataTree(2, recs); DA.SetDataTree(3, sRefs); DA.SetDataTree(4, fnames); DA.SetDataTree(5, fset); DA.SetDataTree(6, gset); }
public static void ReportLayer(Layer layer) { FeatureDefn def = layer.GetLayerDefn(); Console.WriteLine( "Layer name: " + def.GetName() ); Console.WriteLine( "Feature Count: " + layer.GetFeatureCount(1) ); Envelope ext = new Envelope(); layer.GetExtent(ext, 1); Console.WriteLine( "Extent: " + ext.MinX + "," + ext.MaxX + "," + ext.MinY + "," + ext.MaxY); /* -------------------------------------------------------------------- */ /* Reading the spatial reference */ /* -------------------------------------------------------------------- */ OSGeo.OSR.SpatialReference sr = layer.GetSpatialRef(); string srs_wkt; if ( sr != null ) { sr.ExportToPrettyWkt( out srs_wkt, 1 ); } else srs_wkt = "(unknown)"; Console.WriteLine( "Layer SRS WKT: " + srs_wkt ); /* -------------------------------------------------------------------- */ /* Reading the fields */ /* -------------------------------------------------------------------- */ Console.WriteLine("Field definition:"); for( int iAttr = 0; iAttr < def.GetFieldCount(); iAttr++ ) { FieldDefn fdef = def.GetFieldDefn( iAttr ); Console.WriteLine( fdef.GetNameRef() + ": " + fdef.GetFieldTypeName( fdef.GetFieldType() ) + " (" + fdef.GetWidth() + "." + fdef.GetPrecision() + ")"); } /* -------------------------------------------------------------------- */ /* Reading the shapes */ /* -------------------------------------------------------------------- */ Console.WriteLine( "" ); Feature feat; while( (feat = layer.GetNextFeature()) != null ) { ReportFeature(feat, def); feat.Dispose(); } }
public override void DoWork(Action <string, double> ReportProgress, Action Done) { // Checking for cancellation if (CancellationToken.IsCancellationRequested) { return; } ///Make sure there's an API key string mbToken = ApiKey; if (mbToken == "") { string hmbToken = System.Environment.GetEnvironmentVariable("HERONMAPBOXTOKEN"); if (hmbToken != null) { mbToken = hmbToken; RuntimeMessages.Add((GH_RuntimeMessageLevel.Remark, "Using Mapbox token stored in Environment Variable HERONMAPBOXTOKEN.")); } else { RuntimeMessages.Add((GH_RuntimeMessageLevel.Error, "No Mapbox token is specified. Please get a valid token from mapbox.com")); return; } } ///GDAL setup RESTful.GdalConfiguration.ConfigureOgr(); OSGeo.OGR.Ogr.RegisterAll(); ///Set transform from input spatial reference to Rhino spatial reference ///TODO: look into adding a step for transforming to CRS set in SetCRS OSGeo.OSR.SpatialReference rhinoSRS = new OSGeo.OSR.SpatialReference(""); rhinoSRS.SetWellKnownGeogCS("WGS84"); ///TODO: verify the userSRS is valid ///TODO: use this as override of global SetSRS OSGeo.OSR.SpatialReference userSRS = new OSGeo.OSR.SpatialReference(""); //userSRS.SetFromUserInput(userSRStext); userSRS.SetFromUserInput("WGS84"); ///Mapbox uses EPSG:3857 OSGeo.OSR.SpatialReference sourceSRS = new SpatialReference(""); sourceSRS.SetFromUserInput("EPSG:3857"); ///These transforms move and scale in order to go from userSRS to XYZ and vice versa Transform userSRSToModelTransform = Heron.Convert.GetUserSRSToModelTransform(userSRS); Transform modelToUserSRSTransform = Heron.Convert.GetModelToUserSRSTransform(userSRS); Transform sourceToModelSRSTransform = Heron.Convert.GetUserSRSToModelTransform(sourceSRS); Transform modelToSourceSRSTransform = Heron.Convert.GetModelToUserSRSTransform(sourceSRS); double lat = Heron.Convert.XYZToWGS(Location).Y; double lon = Heron.Convert.XYZToWGS(Location).X; ///Setup contour style and unit type string contourType = String.Empty; double?contourNum = Contour; if (contourNum < 0.0) { contourNum = 0.0; } double unitConversion = Rhino.RhinoMath.UnitScale(Rhino.RhinoDoc.ActiveDoc.ModelUnitSystem, Rhino.UnitSystem.Meters); if (MapboxIsochroneSpeckle.MinutesOrMeters == "Distance") { contourType = "contours_meters="; contourNum = contourNum * unitConversion; } else { contourType = "contours_minutes="; if (contourNum > 60) { contourNum = 60; RuntimeMessages.Add((GH_RuntimeMessageLevel.Warning, "Maximum minute contour is 60. Contour value reduced to 60.")); } } ///Make sure Denoise is between 0..1 double?denoiseNum = Denoise; if (denoiseNum < 0.0) { denoiseNum = 0.0; } if (denoiseNum > 1.0) { denoiseNum = 1.0; } ///Make sure Generalize is > 0 double?generalizeNum = Generalize * unitConversion; if (generalizeNum < 0.0) { generalizeNum = 0.0; } ///Construct URL query string string url = @"https://api.mapbox.com/isochrone/v1/mapbox/"; if (!String.IsNullOrEmpty(MapboxIsochroneSpeckle.Profile)) { url = url + MapboxIsochroneSpeckle.Profile.ToLower() + "/"; } if (lon > -180.0 && lon <= 180.0) { url = url + lon + "%2C"; } if (lat > -90.0 && lat <= 90.0) { url = url + lat + "?"; } if (!String.IsNullOrEmpty(contourType)) { url = url + contourType.ToLower(); } if (contourNum != null) { url = url + contourNum; } url = url + "&polygons=true"; if (denoiseNum != null) { url = url + "&denoise=" + denoiseNum; } if (generalizeNum != null) { url = url + "&generalize=" + generalizeNum; } if (mbToken != "") { url = url + "&access_token=" + mbToken; } Url = url; if (CancellationToken.IsCancellationRequested) { return; } if (Run) { List <IGH_GeometricGoo> gGoo = new List <IGH_GeometricGoo>(); OSGeo.OGR.DataSource dataSource = OSGeo.OGR.Ogr.Open(url, 0); if (dataSource == null) { RuntimeMessages.Add((GH_RuntimeMessageLevel.Error, "Mapbox returned an invalid response.")); return; } ///Only interested in geometry, not fields or values OSGeo.OGR.Layer ogrLayer = dataSource.GetLayerByIndex(0); OSGeo.OGR.Feature feat; while ((feat = ogrLayer.GetNextFeature()) != null) { OSGeo.OGR.Geometry geomUser = feat.GetGeometryRef().Clone(); ///reproject geometry to WGS84 and userSRS ///TODO: look into using the SetCRS global variable here if (geomUser.GetSpatialReference() == null) { geomUser.AssignSpatialReference(userSRS); } geomUser.TransformTo(userSRS); if (feat.GetGeometryRef() != null) { gGoo.AddRange(Heron.Convert.OgrGeomToGHGoo(geomUser, userSRSToModelTransform)); } } Isochrones = gGoo; } Done(); }
private void btnTest_Click(object sender, EventArgs e) { Gdal.SetConfigOption("SHAPE_ENCODING", "UTF-8"); using (DataSource ds = Ogr.Open(DistrictImport.GetShapefileName(), 0)) { using (OSGeo.OGR.Layer l = ds.GetLayerByIndex(0)) { OSGeo.OGR.Feature f; while (null != (f = l.GetNextFeature())) { this.Log(f.GetFieldAsString("NAMEARABIC")); } } } //var dlgSelectPGeo = new OpenFileDialog //{ // Title = "Please select a Personal Geodatabase", // Filter = "Microsoft Access database|*.accdb", // InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop) //}; //var dlgSelectFileGDB = new FolderBrowserDialog //{ // RootFolder = Environment.SpecialFolder.Desktop, // Description = "Please select an ESRI FileGeodatabasee (a folder with .gdb ending)" //}; //if (dlgSelectFileGDB.ShowDialog() != System.Windows.Forms.DialogResult.OK) //{ // return; //}; //if (!dlgSelectFileGDB.SelectedPath.EndsWith(".gdb")) //{ // Log("Selected folder does not have the correct *.gdb extension"); // return; //} //using (OSGeo.OGR.DataSource districtDataSource = OSGeo.OGR.Ogr.Open(dlgSelectFileGDB.SelectedPath, 0)) //{ // if (districtDataSource == null) // { // Log("The data source does not exist"); // } // using (OSGeo.OGR.Layer lyr = districtDataSource.GetLayerByName("Street_name_signs")) // { // if (lyr == null) // { // Log("The layer could not be opened"); // return; // } // OSGeo.OGR.Feature f; // var districtLayer = new List<OgrFeature>(); // var of = new OgrStreetNameSign(); // while (null != (f = lyr.GetNextFeature())) // { // of.PopulateFromOgrFeature(f); // districtLayer.Add(of); // Log(of.QR_CODE); // } // Log(districtLayer.Count); // } //} //var s = new SignTestTableANS(); //Log(s.CreateStatement()); }