arcgis 线自动构面的方法一例

arcgis 线自动构面的方法一例

public class CreatePolygonTools    {        //自动构造面          public static bool AutoCompleteFromGeometries(GeometryBagClass enumGeoLines, IFeatureClass fc_polygon)        {            bool rbc = false;                        IGeoDataset geoDS = fc_polygon as IGeoDataset;            IEnvelope processingBounds = geoDS.Extent;            IWorkspace ws = (fc_polygon as IDataset).Workspace;            ISelectionSet selSet;            IInvalidArea invalidArea = new InvalidAreaClass();            //            IFeatureConstruction pfeatBuild = new FeatureConstructionClass();            pfeatBuild.AutoCompleteFromGeometries(fc_polygon, processingBounds, enumGeoLines, invalidArea, 0.0001, ws, out selSet);            //            rbc=true;            return rbc;        }        //构面  从线图层        public static bool ConstructPolygons(IFeatureClass fc_line, IFeatureClass fc_polygon)        {            bool rbc = false;            ICancelOperation cancel = new CancelOperationClass();                        //            IFeatureCursor pLineSrc = fc_line.Search(null, false);            IFeatureConstruction pfeatBuild = new FeatureConstructionClass();            pfeatBuild.ConstructPolygonsFromFeaturesFromCursor(cancel, fc_polygon, null, false, false, pLineSrc, null, 0.001, null);            //            if (pLineSrc != null)            {                TokayWorkspace.ComRelease(pLineSrc);                pLineSrc = null;            }            rbc = true;            return rbc;        }        //构面 选中要素集        public bool ConstructPolygonsFromFeatures(IEnumFeature pEnumFeature, IFeatureClass fc_polygon)        {            bool rbc = false;            ICancelOperation cancel = new CancelOperationClass();                        //                        IFeatureConstruction pfeatBuild = new FeatureConstructionClass();            pfeatBuild.ConstructPolygonsFromFeatures(cancel, fc_polygon, null, false, false, pEnumFeature, null, 0.001, null);            //                        rbc = true;            return rbc;        }    }    public class CancelOperationClass : ICancelOperation    {        private Boolean isCancelled = false;        public Boolean IsCancelled { get { return isCancelled; } }        public void Cancel() { isCancelled = true; }    }