AE指定字段转成注记【2】

AE指定字段转成注记【2】

08-06-13 08:33:33 作者:xbt746 出处：xbt746.cnblogs.com

   private bool ConvertToAnnotateByFeature(ILayer pLayer,int fieldnum,ref IAnnotationLayer pAnnoLayer)
        ...{
            IFeatureLayer pFeatlayer = pLayer as IFeatureLayer;
            if (pFeatlayer == null)
                return false;
            IFeatureClass pFeatClass = pFeatlayer.FeatureClass;
            IFeatureCursor pFeatCursor = pFeatClass.Search(null, false);
            IFeature pFeat = pFeatCursor.NextFeature();

            IFeatureLayer pAnnoFeatLayer=pAnnoLayer as IFeatureLayer;
            IAnnotationClassExtension pAnnotateExten = pAnnoFeatLayer.FeatureClass.Extension as IAnnotationClassExtension;
            ISymbol pSymbol = pAnnotateExten.SymbolCollection.get_Symbol(0);
            IGeometry pGeo;
            double angle = 0;
            IRgbColor pRGB=new RgbColorClass();
            pRGB.Blue=255;
            pRGB.Green=255;
            pRGB.Red=0;
            /**//////判断是不是公路层的Width，特殊处理/////
            string temp_layername = pLayer.Name.ToUpper();
            bool bwidth=false;
            if(pFeatClass.Fields.get_Field(fieldnum).Name.ToUpper()=="WIDTH")
            ...{
                if (pLayer.Name.ToUpper().Contains("LRDL"))
                    bwidth = true;
            }   
            IElementCollection pElementColl = new ElementCollectionClass();
            pAnnoLayer.BeginAddElements();
            while(pFeat!=null)
            ...{
                pGeo = pFeat.Shape;
                IPoint pLabelPoint = null;
                if(pGeo is IPolyline)
                ...{
                    IPolyline pline=pGeo as IPolyline;
                    pLabelPoint = GetLabelPoint(pline);
                }
                if(pGeo is IPoint)
                ...{
                    pLabelPoint = pGeo as IPoint;
                }
                if(pGeo is IPolygon)
                ...{
                    IPolygon pPolygon = pGeo as IPolygon;
                    IArea pArea = pPolygon as IArea;
                    pLabelPoint = pArea.LabelPoint;
                }
                object val=pFeat.get_Value(fieldnum);
                string s=val.ToString();
                if (s == null || s.Length == 0)
                ...{
                    pFeat = pFeatCursor.NextFeature();
                    continue;
                }
                /**////对公路的宽度进行特殊处理
                if(bwidth)
                ...{
                    
                    double width = double.Parse(s);
                    int rtegnum = pFeatClass.FindField("RTEG");
                    string rteg = pFeat.get_Value(rtegnum).ToString();
                    if(rteg=="高速"&&width>55.0)
                    ...{
                        IElement pElement = MakeTextElement(pGeo, angle, s, pRGB, pSymbol);
                        pElementColl.Add(pElement, pFeat.OID);
                    }
                    else if(width>40.0)
                    ...{
                        IElement pElement = MakeTextElement(pGeo, angle, s, pRGB, pSymbol);
                        pElementColl.Add(pElement, pFeat.OID);
                    }
                }
                else if (/**//*pLabelPoint != null&&*/s.Length>0)
                ...{
                    IElement pElement = MakeTextElement(pGeo, angle, s, pRGB,pSymbol);                    
                    pElementColl.Add(pElement, pFeat.OID);
                }
                pFeat = pFeatCursor.NextFeature();
            }
            pAnnoLayer.EndAddElements();
            pAnnoLayer.BeginAddElements();
            if(pElementColl.Count<1)
            ...{
                pAnnoLayer.EndAddElements();
                return true;
            }
            pAnnoLayer.DoAddElements(pElementColl, 0);
         /**//*   pAnnoLayer.SetupAttributeConversion()*/
            pAnnoLayer.EndAddElements();
            return true;
        }