C#ArcEngine二次开发如何实现Arcmap中编辑器里面的部分功能
增加、删除面等功能已经实现,我需要类似Arcmap中的“整形要素工具”来协助我修改面要素
感谢
以下内容部分参考ChatGPT模型:
首先,要实现类似ArcMap中的“整形要素工具”,您需要使用ArcObjects的编辑器对象来实现。具体来说,您需要创建一个新的编辑工具类,该类将继承自ESRI.ArcGIS.Desktop.AddIns.Tool类,并实现IEditTask接口。
在您的编辑工具类中,您需要实现OnMouseDown和OnMouseMove事件处理程序以捕获鼠标单击和移动事件。然后,您可以使用IEditor对象来获取当前编辑会话中的活动编辑图层,并使用IEditTask接口中的EditSketch对象来获取当前正在编辑的要素的几何图形。
接下来,您可以使用IEditTask接口提供的一些方法和属性来执行您的编辑操作。例如,您可以使用EditSketch对象中的AddVertex方法向当前正在编辑的要素添加新的顶点,使用MovePoint方法移动现有顶点,使用Cut方法将要素分割为两个要素等等。
最后,您需要在您的编辑工具类中实现OnDoubleClick事件处理程序以完成编辑操作,并将编辑结果保存到编辑会话中。
以下是一个简单的示例,演示如何使用编辑器对象实现“整形要素工具”:
using ESRI.ArcGIS.ArcMapUI;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Editor;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Desktop.AddIns;
namespace EditTools
{
public class ReshapeTool : Tool, IEditTask
{
private IEditor m_editor;
private IEditSketch m_editSketch;
private IFeature m_editFeature;
public ReshapeTool()
{
m_editor = ArcMap.Editor;
}
protected override void OnMouseDown(MouseEventArgs arg)
{
// Get the active edit layer
IFeatureLayer editLayer = m_editor.EditLayer as IFeatureLayer;
if (editLayer == null)
return;
// Get the clicked point in map coordinates
IPoint clickedPoint = ArcMap.Document.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(arg.X, arg.Y);
// Get the nearest feature to the clicked point
m_editFeature = GetNearestFeature(editLayer, clickedPoint);
if (m_editFeature == null)
return;
// Start editing the feature
m_editor.StartOperation();
// Get the edit sketch for the feature
m_editSketch = m_editor as IEditSketch;
m_editSketch.Geometry = m_editFeature.ShapeCopy;
m_editSketch.RefreshSketch();
// Capture mouse move events to reshape the feature
this.Cursor = Cursors.Cross;
this.Enabled = true;
}
protected override void OnMouseMove(MouseEventArgs arg)
{
if (m_editSketch == null)
return;
// Get the current mouse position in map coordinates
IPoint currentPoint = ArcMap.Document.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(arg.X, arg.Y);
// Reshape the feature based on the current mouse position
m_editSketch.MovePoint(m_editSketch.PointCount - 1, currentPoint);
m_editSketch.RefreshSketch();
}
protected override void OnDoubleClick()
{
if (m_editSketch == null)
return;
// Finish editing the feature
m_editor.StopOperation("Reshape Feature");
m_editor.Map.SelectFeature(m_editor.EditLayer, m_editFeature);
// Clear the edit sketch
m_editSketch.Geometry = null;
m_editSketch.RefreshSketch();
// Reset the cursor and tool state
this.Cursor = Cursors.Default;
this.Enabled = false;
}
#region IEditTask Members
public void Activate()
{
// Nothing to do
}
public void Deactivate()
{
// Nothing to do
}
public void Delete()
{
// Nothing to do
}
public void FinishSketch()
{
// Nothing to do
}
public void RefreshSketch()
{
// Nothing to do
}
public void StartSketch(IGeometry geometry)
{
// Nothing to do
}
public void UpdateSketch(IGeometry geometry)
{
// Nothing to do
}
#endregion
private IFeature GetNearestFeature(IFeatureLayer layer, IPoint point)
{
// Get a search envelope around the clicked point
IEnvelope searchEnvelope = point.Envelope;
searchEnvelope.Expand(0.1, 0.1, false);
// Create a spatial filter to search for features within the search envelope
ISpatialFilter spatialFilter = new SpatialFilterClass();
spatialFilter.Geometry = searchEnvelope;
spatialFilter.SpatialRel = esriSpatialRelEnum.esriSpatialRelIntersects;
// Search for features within the search envelope
IFeatureCursor featureCursor = layer.Search(spatialFilter, false);
IFeature feature = featureCursor.NextFeature();
// Get the nearest feature to the clicked point
double minDistance = double.MaxValue;
IFeature nearestFeature = null;
while (feature != null)
{
double distance = point.DistanceTo(feature.ShapeCopy as IPoint);
if (distance < minDistance)
{
minDistance = distance;
nearestFeature = feature;
}
feature = featureCursor.NextFeature();
}
return nearestFeature;
}
}
}
在这个示例中,我们创建了一个名为“ReshapeTool”的编辑工具类,它允许用户在单击要素时捕获要素,并在鼠标移动时重新形状要素。要实现这个功能,我们使用了IEditor、IEditTask和IEditSketch等编辑器对象,以及一些编辑操作,如AddVertex、MovePoint和Cut等。我们还使用了GetNearestFeature方法来查找最接近鼠标单击点的要素。
注意,这只是一个简单的示例,您可能需要根据您的具体需求进行一些修改和定制。但是,这个示例应该可以帮助您了解如何使用ArcObjects编辑器对象来实现类似ArcMap中的“整形要素工具”。
如果我的建议对您有帮助、请点击采纳、祝您生活愉快
回答引用new Bing:
以下是一个简单的示例代码,演示如何使用C# ArcEngine中的ITopologicalOperator接口和IEditTool接口实现要素编辑:
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Editor;
using ESRI.ArcGIS.Geometry;
// 获取当前编辑图层和编辑器对象
IEditor editor = ArcMap.Application.FindExtensionByName("ESRI Object Editor") as IEditor;
IFeatureLayer featureLayer = editor.EditWorkspace.GetFeatureLayer("your_featurelayer_name");
// 定义拓扑操作类型
esriTopologyRuleType topologyRuleType = esriTopologyRuleType.esriTRTAreaNoOverlap;
// 创建整形要素工具对象
IEditTool editTool = new EditTool_Class();
editTool.OnCreate(editor);
// 启动编辑模式
editor.StartOperation();
// 循环选择的面要素,对其进行整形操作
foreach (IFeature feature in editor.EditSelection)
{
IGeometry geometry = feature.ShapeCopy;
ITopologicalOperator topoOperator = geometry as ITopologicalOperator;
IGeometry resultGeom = topoOperator.Buffer(0); // 进行拓扑修复
// 将处理后的几何图形设置为要素的新几何图形
feature.Shape = resultGeom;
// 验证整形操作结果是否符合要求
if (featureLayer.CheckTopologyRule(topologyRuleType, feature))
{
// 提交要素修改
feature.Store();
}
}
// 结束编辑操作
editor.StopOperation("Edit Feature");
此示例代码仅供参考,并且可能需要根据您的具体需求进行修改。
引用chatGPT作答,要实现类似 ArcMap 中的 "整形要素工具" 功能,可以使用 ArcEngine 编辑器对象模型(Editor Object Model)中的 "Reshape Feature" 方法。
以下是实现此功能的一些步骤:
1.获取编辑器对象,使用 IEditor 接口。
IEditor editor = ArcMap.Application.FindExtensionByName("ESRI Object Editor") as IEditor;
2.选择要进行整形操作的面要素,使用 ISelectionSet 接口和 IEditor 接口。
ISelectionSet selectionSet = editor.EditSelection;
IEnumFeature enumFeature = editor.EditSelection as IEnumFeature;
enumFeature.Reset();
IFeature feature = enumFeature.Next();
3.调用 IEditTools2.ReshapeFeature 方法对选定的要素进行整形操作。
IEditTools editTools = editor as IEditTools;
editTools.ReshapeFeature(feature, newPolyline);
其中,newPolyline 是用于整形操作的线要素,它可以使用 IGeometryCollection 接口创建。
完整的代码示例如下:
//获取编辑器对象
IEditor editor = ArcMap.Application.FindExtensionByName("ESRI Object Editor") as IEditor;
//获取要进行整形操作的面要素
ISelectionSet selectionSet = editor.EditSelection;
IEnumFeature enumFeature = editor.EditSelection as IEnumFeature;
enumFeature.Reset();
IFeature feature = enumFeature.Next();
//创建用于整形的线要素
IGeometryCollection newPolyline = new PolylineClass();
IPointCollection pointCollection = new PolylineClass();
pointCollection.AddPoint(new PointClass() { X = 10, Y = 10 });
pointCollection.AddPoint(new PointClass() { X = 20, Y = 20 });
(newPolyline as IPolyline).AddGeometry(pointCollection as IGeometry);
//对选定的要素进行整形操作
IEditTools editTools = editor as IEditTools;
editTools.ReshapeFeature(feature, newPolyline);
请根据实际需要修改代码中的要素选择方式和线要素创建方式。
该回答引用ChatGPT c#
// 添加整形编辑工具按钮
ICommandItem reshapeFeatureCmdItem = new ControlsReshapeFeatureToolClass();
reshapeFeatureCmdItem.OnCreate(ESRI.ArcGIS.Framework.app);
ICommand reshapeFeatureCmd = reshapeFeatureCmdItem.Command;
edSvc.AddTool(reshapeFeatureCmd);
edSvc.SetMenu(reshapeFeatureCmd, false);
edSvc.SetTooltip(reshapeFeatureCmd, "整形要素工具");
reshapeFeatureCmd.Caption = "整形要素工具";
reshapeFeatureCmd.Category = "整形要素";
reshapeFeatureCmd.SmallBitmap = new Bitmap(Path.Combine(Application.StartupPath, @"Reshaping\Reshape.bmp"));
c#
// 注册整形编辑工具的事件处理器
private IEditEvents_Event m_editEvents;
private void RegisterReshapeEvent()
{
m_editEvents = axMapControl.Map as IEditEvents_Event;
((IEditEvents_Event)m_editEvents).OnReshapeFeature += OnReshapeFeature;
}
c#
// 实现要素的整形编辑操作
private void OnReshapeFeature(IObject obj)
{
try
{
// 要素整形编辑操作
IEngineEditSketch pSketch = axMapControl.EditWorkspace as IEngineEditSketch;
IPoint point = pSketch.Vertex;
IFeature feature = obj as IFeature;
IGeometry geometry = feature.Shape;
IHitTest hitTest = geometry as IHitTest;
IPath path = hitTest.HitTest(point, 0.1, esriGeometryHitPartType.esriGeometryPartBoundary, null, null, null, out double hitDist, out int partIndex, out int vertexIndex, out bool inside);
if (path != null)
{
ITopologicalOperator topoOperator = geometry as ITopologicalOperator;
topoOperator.Simplify();
IFeatureEdit2 featureEdit = feature as IFeatureEdit2;
featureEdit.ModifyGeometry(topoOperator.Difference(path));
featureEdit.Update();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
csharp
// 定义一个 IEditTask 接口实现类
public class MyTask : ESRI.ArcGIS.Editor.IEditTask
{
// 在编辑器中选中要素时调用的方法
public void OnCreate(ESRI.ArcGIS.Editor.IEditor Editor)
{
// 获取选中的要素集合
ESRI.ArcGIS.Editor.IEnumFeature selectedFeatures = Editor.EditSelection;
selectedFeatures.Reset();
ESRI.ArcGIS.Geodatabase.IFeature feature = selectedFeatures.Next();
// 遍历每个选中的要素
while (feature != null)
{
// 获取要素的几何图形
ESRI.ArcGIS.Geometry.IPolygon polygon = feature.Shape as ESRI.ArcGIS.Geometry.IPolygon;
// 对几何图形进行整形操作
ESRI.ArcGIS.Geometry.IArea area = polygon as ESRI.ArcGIS.Geometry.IArea;
area.Simplify();
ESRI.ArcGIS.Geometry.ITopologicalOperator2 topoOp = polygon as ESRI.ArcGIS.Geometry.ITopologicalOperator2;
topoOp.IsKnownSimple_2 = false;
topoOp.Simplify();
// 更新要素的几何图形
feature.Shape = polygon;
// 更新要素的属性
feature.Store();
// 获取下一个选中的要素
feature = selectedFeatures.Next();
}
}
// 在编辑器中保存时调用的方法
public void OnSave(ESRI.ArcGIS.Editor.IEditor Editor)
{
// 保存所有修改
Editor.StopOperation("Edit Operation");
// 将编辑器退出编辑模式
Editor.StopEditing(true);
}
}
// 在 ArcMap 中调用编辑任务
public void EditFeature()
{
IEditor editor = ArcMap.Application.FindExtensionByName("ESRI Object Editor") as IEditor;
// 指定编辑操作名称
editor.StartOperation();
// 激活编辑器的整形要素工具
MyTask myTask = new MyTask();
editor.CurrentTask = myTask;
// 启动编辑器的编辑模式
editor.StartEditing();
}
以下答案由GPT-3.5大模型与博主波罗歌共同编写:
实现类似ArcMap中的“整形要素工具”的功能,您需要使用C# ArcObjects中的编辑器对象和几何对象。以下是实现该工具的大体步骤:
IEditor editor = ArcMap.Application.FindExtensionByName("ESRI Object Editor") as IEditor;
IWorkspaceEdit workspaceEdit = (IWorkspaceEdit)editor.EditWorkspace;
IEnumFeature enumFeature = editor.EditSelection;
enumFeature.Reset();
IFeature feature = enumFeature.Next();
while (feature != null)
{
//对每个要素执行操作
feature = enumFeature.Next();
}
IGeometry geometry = feature.ShapeCopy;
ITopologicalOperator2 topoOperator = geometry as ITopologicalOperator2;
IGeometry modifiedGeometry = topoOperator.Simplify();
feature.Shape = modifiedGeometry;
workspaceEdit.StartEditOperation();
feature.Store();
workspaceEdit.StopEditOperation();
下面是完整的代码示例:
IEditor editor = ArcMap.Application.FindExtensionByName("ESRI Object Editor") as IEditor;
IWorkspaceEdit workspaceEdit = (IWorkspaceEdit)editor.EditWorkspace;
IEnumFeature enumFeature = editor.EditSelection;
enumFeature.Reset();
IFeature feature = enumFeature.Next();
while (feature != null)
{
//获取要素的几何对象
IGeometry geometry = feature.ShapeCopy;
//将几何对象转换为ITopologicalOperator2
ITopologicalOperator2 topoOperator = geometry as ITopologicalOperator2;
//调用ITopologialOperator2的Simplify方法进行要素整形
IGeometry modifiedGeometry = topoOperator.Simplify();
//更新要素的几何属性
feature.Shape = modifiedGeometry;
//提交编辑
workspaceEdit.StartEditOperation();
feature.Store();
workspaceEdit.StopEditOperation();
feature = enumFeature.Next();
}
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