Arcengine+C#实现矢量数据的裁剪

   
最近工作需要完成图像的裁剪，因为有很多需要裁剪的图像，用arcgis做的话工作量太大，而且后期工作涉及到自动化处理，所以写了段代码用engine实现图像的裁剪功能。首先要获得你所需要被裁剪的图层的IFeatureLayer和裁剪图层的IFeatureLayer，然后调用IBasicGeoprocessor.Clip方法进行裁剪，我把该方法单独封装了一下，代码如下：

 public IFeatureClass Clip(IFeatureClass pInputFeatureClass, IFeatureClass pClipFeatureClass, string pfilePath, string pfileName)
        {
            IFeatureClassName pOutput = new FeatureClassNameClass();
            pOutput.ShapeFieldName = pInputFeatureClass.ShapeFieldName;
            pOutput.ShapeType = pInputFeatureClass.ShapeType;
            pOutput.FeatureType = esriFeatureType.esriFTSimple;

            //获取shapefile数据工作空间
            IWorkspaceName pWsN = new WorkspaceNameClass();
            pWsN.WorkspaceFactoryProgID = “esriDataSourcesFile.ShapefileWorkspaceFactory”;
            pWsN.PathName = pfilePath;

            //通过IDatasetName设置输出结果相关参数
            IDatasetName pDatasetName = pOutput as IDatasetName;
            pDatasetName.Name = pfileName;
            pDatasetName.WorkspaceName = pWsN;

            //初始化IBasicGeoprocessor对象，调用clip方法
            IBasicGeoprocessor pBasicGeo = new BasicGeoprocessorClass();
            pBasicGeo.SpatialReference = axMapControl1.SpatialReference;

            //进行裁剪运算
            IFeatureClass pFeatureClass = pBasicGeo.Clip(pInputFeatureClass as ITable, true , pClipFeatureClass as ITable, true , 0.01, pOutput);
            return pFeatureClass; 
        }

        然后我添加了一个button和三个mapcontrol控件，在axmapcontrol1和axmapcontrol2的属性里直接添加了图层，代码如下：

 private void button1_Click(object sender, EventArgs e)
        {
            ILayer pInputLayer = axMapControl1.get_Layer(0);//获取在axmapcontrol1中加载的图层，是需要被裁剪的图层
            ILayer pClipLayer = axMapControl2.get_Layer(0);//获取在axmapcontrol2中加载的图层，是裁剪图层
            if (pInputLayer != null && pClipLayer != null)
            {
                IFeatureLayer pInputFeatureLayer = pInputLayer as IFeatureLayer;
                IFeatureLayer pClipFeatureLayer = pClipLayer as IFeatureLayer;
                IFeatureClass outFeatureClass = Clip(pInputFeatureLayer.FeatureClass, pClipFeatureLayer.FeatureClass, @”C:\Users\Administrator\Desktop\”, “裁剪分析结果”);
                if (outFeatureClass != null)
                {
                    IFeatureLayer pFeatureLayer = new FeatureLayerClass();
                    pFeatureLayer.FeatureClass = outFeatureClass;
                    pFeatureLayer.Name = outFeatureClass.AliasName;
                    this.axMapControl3.AddLayer(pFeatureLayer);
                }
            }

转载自：https://blog.csdn.net/u014627099/article/details/52151534