ArcEngine下TIN生成等高线

我会带着你远行 2022-08-27 05:46 122阅读 0赞

时间太晚了，直接附上源码：

/// <summary>
            /// TIN生成等高线
            /// </summary>
            /// <param name="pInterval">等高线间距</param>
            public void Tin2Contour(string path_,string name_,double pInterval)
            {
                //获取TIN
                ITinLayer pTinlayer = GetLayerByName(pScene , comboBox_TIN.Text) as ITinLayer;
                ITin pTin = pTinlayer.Dataset as ITin;
    
                //创建Contour shape
                IWorkspaceFactory pWSFac = new ShapefileWorkspaceFactoryClass();
                IFeatureWorkspace pFeatureWS = pWSFac.OpenFromFile(path_ , 0) as IFeatureWorkspace;
                if (System.IO.File.Exists(path_+"\\"+name_+".shp"))
                {
                    System.IO.File.Delete(path_ + "\\" + name_ + ".shp");
                    System.IO.File.Delete(path_ + "\\" + name_ + ".dbf");
                    System.IO.File.Delete(path_ + "\\" + name_ + ".shx");
                }
                IFields pFields = CreateShapeFields(esriGeometryType.esriGeometryPolyline);
                pFeatureWS.CreateFeatureClass(name_ , pFields , null , null , esriFeatureType.esriFTSimple , "Shape" , null);
               
                IFeatureClass pContourFeatureClass = pFeatureWS.OpenFeatureClass(name_);
             
                //生成等高线
                ITinSurface pTinSurface = pTin as ITinSurface;
                pTinSurface.Contour(0 , pInterval , pContourFeatureClass , "Contour" , 0);
    
                //添加等高线图层
                IFeatureLayer pFeatureLayer = new FeatureLayerClass();
                pFeatureLayer.FeatureClass = pContourFeatureClass;
              
                IGeoFeatureLayer pGeoFeatureLayer = pFeatureLayer as IGeoFeatureLayer;
                pGeoFeatureLayer.DisplayAnnotation = true;
                pGeoFeatureLayer.DisplayField = "Contour";
                pGeoFeatureLayer.Name = pContourFeatureClass.AliasName + "_Contour";
    
                //设置线样式
                ILineSymbol pLineSymbol = new SimpleLineSymbolClass();
                pLineSymbol.Color = GetRGBColor(32 , 47 , 247);
                pLineSymbol.Width = 2;
                ISimpleRenderer pRender = pGeoFeatureLayer.Renderer as ISimpleRenderer;
                pRender.Symbol = pLineSymbol as ISymbol;
    
                pScene.AddLayer(pFeatureLayer as ILayer);
    
            }

#region 创建几何字段
    
            /// <summary>
            /// 创建几何字段
            /// </summary>
            /// <param name="p_esriGeotype"></param>
            /// <returns></returns>
            public IFields CreateShapeFields(esriGeometryType p_esriGeotype)
            {
    
                IFields pFields = new FieldsClass();
                IFieldsEdit pFieldsEdit = pFields as IFieldsEdit;
    
                IGeometryDef pGeoDef = new GeometryDefClass();
                IGeometryDefEdit pGeoDefEdit = pGeoDef as IGeometryDefEdit;
                pGeoDefEdit.GeometryType_2 = p_esriGeotype;
                pGeoDefEdit.SpatialReference_2 = (ISpatialReference) new UnknownCoordinateSystem();
    
                IField pFld = new FieldClass();
                IFieldEdit pFldEdit = pFld as IFieldEdit;
                pFldEdit.Name_2 = "shape";
                pFldEdit.IsNullable_2 = false;
                pFldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;
                pFldEdit.GeometryDef_2 = pGeoDef;
    
                pFieldsEdit.AddField(pFld);
    
                return pFields;
            }
    
            #endregion
           
            #region 根据名称获取图层
    
            //根据名称获取图层
            public ILayer GetLayerByName(IScene scene , string strLayerName)
            {
                ILayer pLayer = null;
                for (int i = 0;i < scene.LayerCount;i++)
                {
                    pLayer = scene.get_Layer(i);
                    if (strLayerName == pLayer.Name)
                    {
                        break;
                    }
                }
                return pLayer;
            }
            #endregion

Contour函数说明参照帮助文档！