Arcgis Engine 切割图斑（ITool）_arcengine 批量分割-优快云博客

 
  public 
   override 
  void 
   OnMouseDown( 
  int 
   Button,  
  int 
   Shift,  
  int 
   X,  
  int 
  Y) 
 
  { 
 
  // TODO:  Add Cut.OnMouseDown implementation 
 
  if 
  (Button==1) 
  //左键按下 
 
  { 
 
  //拿到hook 
 
  IMapControl3 pMapControlx = (IMapControl3)m_hookHelper.Hook; 
 
  IFeatureLayer pFeatureLayer = pMapControlx.get_Layer(0)  
  as 
  IFeatureLayer; 
 
  //划线 
 
  IGeometry pline = (IGeometry)pMapControlx.TrackLine(); 
 
  //拿到划线范围内的所有feature 
 
  IGeometry pGeometry = pline  
  as 
  IGeometry; 
 
  IMap pMap = pMapControlx.Map; 
 
  pMap.SelectByShape(pGeometry,  
  null 
  ,  
  false 
  );<br> 
 
  //转成IRealtionOperator接口，以便在遍历时判断几何位置关系。 
 
  IRelationalOperator rela = (pline  
  as 
  IPolyline)  
  as 
  IRelationalOperator; 
 
  //拿到切割目标集合 
 
  IEnumFeature pEnumFeature = (IEnumFeature)pMap.FeatureSelection; 
 
  IFeature pFeature = pEnumFeature.Next(); 
 
  //依次遍历 
 
  while 
  (pFeature !=  
  null 
  ) 
 
  { 
 
  if 
  (rela.Crosses(pFeature.Shape)) 
  //判断是否Cross 
 
  { 
 
  try 
 
  { 
 
  //把面转成ITopologicalOperator，使用Cut函数 
 
  ITopologicalOperator topo = (pFeature.Shape  
  as 
  IPolygon)  
  as 
  ITopologicalOperator; 
 
  //新建两个面，作为切割函数的参数，切割后的两个对象保存于这两个面之中 
 
  IGeometry pLeftGeometry =  
  new 
  PolygonClass();  
 
  IGeometry pRightGeometry =  
  new 
  PolygonClass(); 
 
  topo.Cut((pline  
  as 
  IPolyline),  
  out 
  pLeftGeometry,  
  out 
  pRightGeometry); 
 
  //由FeatureClass新建Feature 
 
  IFeature pFeatureLeft = pFeatureLayer.FeatureClass.CreateFeature(); 
 
  IFeature pFeatureRight = pFeatureLayer.FeatureClass.CreateFeature(); 
 
  //保存 
 
  pFeatureLeft.Shape = pLeftGeometry; 
 
  pFeatureRight.Shape = pRightGeometry; 
 
  pFeatureLeft.Store(); 
 
  pFeatureRight.Store(); 
 
  //删除 
 
  pFeature.Delete(); 
 
  } 
 
  catch 
 
  {  
 
  } 
 
  } 
 
  pFeature = pEnumFeature.Next(); 
 
  } 
 
  //清除选择 
 
  IFeatureSelection pFeatureSelectionClear= pMapControlx.get_Layer(0)  
  as 
  IFeatureSelection; 
 
  pFeatureSelectionClear.Clear(); 
 
  pMapControlx.Refresh(); 
 
  } 
 
  }