public void OnFinishSketch()
{
//get reference to featurelayer being edited
IFeatureLayer featureLayer = m_editLayer.TargetLayer as IFeatureLayer;
//get reference to the sketch geometry
IGeometry reshapeGeom = m_editSketch.Geometry;
if (reshapeGeom.IsEmpty == false)
{
//get the currently selected feature
IFeatureSelection featureSelection = featureLayer as IFeatureSelection;
ISelectionSet selectionSet = featureSelection.SelectionSet;
ICursor cursor;
selectionSet.Search(null, false, out cursor);
IFeatureCursor featureCursor = cursor as IFeatureCursor;
//the PerformSketchToolEnabledChecks property has already checked that only 1 feature is selected
IFeature feature = featureCursor.NextFeature();
//Take a copy of geometry for the selected feature
IGeometry editShape = feature.ShapeCopy;
//create a path from the editsketch geometry
IPointCollection reshapePath = new PathClass();
reshapePath.AddPointCollection(reshapeGeom as IPointCollection);
//reshape the selected feature
IPolyline polyline = editShape as IPolyline;
polyline.Reshape(reshapePath as IPath);
#region Perform an edit operation to store the new geometry for selected feature
try
{
m_engineEditor.StartOperation();
feature.Shape = editShape;
feature.Store();
m_engineEditor.StopOperation("Reshape Feature");
}
catch (Exception ex)
{
m_engineEditor.AbortOperation();
System.Diagnostics.Trace.WriteLine(ex.Message, "Reshape Geometry Failed");
}
#endregion
}
//refresh the display
IActiveView activeView = m_engineEditor.Map as IActiveView;
activeView.PartialRefresh(esriViewDrawPhase.esriViewGeography, (object)featureLayer, activeView.Extent);
}
private void CutSelectedPolygon()
{
bool isSuccess = false;
if (m_selectedFeature == null)
{
MessageBox.Show("请先选择要分割的面要素！！", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
m_toolPhase = ToolPhase.SelectFeature;
return;
}
//在屏幕上绘制用于分割的线要素
IScreenDisplay screenDisplay = m_activeView.ScreenDisplay;
ISimpleLineSymbol sym = new SimpleLineSymbolClass();
IRgbColor color = new RgbColorClass();
color.Red = 255;
color.Green = 128;
color.Blue = 128;
sym.Color = color;
sym.Style = esriSimpleLineStyle.esriSLSSolid;
sym.Width = 2;
IRubberBand cutBand = new RubberLineClass();
IGeometry reshaprGeometry = cutBand.TrackNew(screenDisplay, sym as ISymbol);
screenDisplay.StartDrawing(screenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);
screenDisplay.SetSymbol(sym as ISymbol);
screenDisplay.DrawPolyline(reshaprGeometry);
screenDisplay.FinishDrawing();
IFeatureClass featureClass = m_selectedFeature.Class as IFeatureClass;
IDataset dataset = featureClass as IDataset;
IWorkspaceEdit workspaceEdit = dataset.Workspace as IWorkspaceEdit;
if (!(workspaceEdit.IsBeingEdited()))
{
return;
}
//分割选择的面要素
if (reshaprGeometry.IsEmpty == true)
{
return;
}
try
{
IPolyline reshapePolyline, sourcePolyline = null;
IPolygon4 polygon = null;
IRing ring = null, innerRing = null, outRing = null;
IPath reshapePath = null;
IGeometryCollection pathCollection = null;
IGeometry geometry = m_selectedFeature.Shape;
switch (geometry.GeometryType)
{
case esriGeometryType.esriGeometryPolygon:
bool outerSuccess = false, innerSuccess = false;
IGeometryBag innerRingGeometryBag = null;
IGeometryCollection innerRingGeometryCollection = null;
reshapePolyline = reshaprGeometry as IPolyline;
pathCollection = reshapePolyline as IGeometryCollection;
//只可能产生一条polyline，直接写死
reshapePath = pathCollection.Geometry[0] as IPath;
polygon = geometry as IPolygon4;
IGeometryBag exteriorRingGeometryBag = polygon.ExteriorRingBag;
IGeometryCollection exteriorRingGeometryCollection = exteriorRingGeometryBag as IGeometryCollection;
for (int i = 0; i < exteriorRingGeometryCollection.GeometryCount; i++)
{
outRing = exteriorRingGeometryCollection.Geometry[i] as IRing;
bool a = outRing.Reshape(reshapePath);
outerSuccess = outerSuccess || a;
innerRingGeometryBag = polygon.get_InteriorRingBag(outRing);
innerRingGeometryCollection = innerRingGeometryBag as IGeometryCollection;
for (int j = 0; j < innerRingGeometryCollection.GeometryCount; j++)
{
innerRing = innerRingGeometryCollection.Geometry[j] as IRing;
bool b = innerRing.Reshape(reshapePath);
innerSuccess = innerSuccess || b;
}
}
isSuccess = innerSuccess || outerSuccess;
break;
case esriGeometryType.esriGeometryPolyline:
sourcePolyline = geometry as IPolyline;
reshapePolyline = reshaprGeometry as IPolyline;
pathCollection = reshapePolyline as IGeometryCollection;
//只可能产生一条polyline，直接写死
reshapePath = pathCollection.Geometry[0] as IPath;
isSuccess = sourcePolyline.Reshape(reshapePath);
break;
}
if (isSuccess)
{
workspaceEdit.StartEditOperation();
m_selectedFeature.Shape = geometry;//如果没加这句gdb无法编辑
m_selectedFeature.Store();
m_activeView.Refresh();
workspaceEdit.StopEditOperation();
}
else
{
throw new Exception("重塑要素失败！");
}
m_activeView.Refresh();
}
catch (Exception ex)
{
workspaceEdit.AbortEditOperation();
MessageBox.Show("分割面要素失败！！" + ex.Message, "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
m_activeView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, m_activeView.Extent);
m_toolPhase = ToolPhase.SelectFeature;
}