arcengine 捕捉笔记
IEngineEditor pEngineEditor=new EngineEditor();
//Get the snap enviroment from editor
IEngineSnapEnviroment psnapEnvironment = pEngineEditor as IEngineSnapEnviorment();
if(pSnapEnvironment.SnapAgentCount==0)
{
IEngineFeatureSnapAgent pFeatureSnapAgent=new EngineFeatureAgent();
pFeatureSnapAgent.FeatureClass=pFeatureClass;
psnapEnvironment.AddSnapAgent(pFeatureSnapAgent);
}
psnapEnvironment.SnapToleranceUnits=esriEngineToleranceUnits.esriEngineTolerancePixels;
psnapEnviroment.SnapTolerance=10;
IEngineEditorProperties pEnginePro=pEngineEditor as IEngineEditProperties2;
pEginePro.SnapTips=true;
//用法 MoveMove下
IEngineSnapEnviroment psnapEnvironment = pEngineEditor as IEngineSnapEnviorment();
psnapEnvironment .SnapPoint(Point);
//0——————————————————简便高级的另外的一种捕捉 不需要打开编辑 效果同arcmap一致—————————–
using System;
using System.Drawing;
using System.Runtime.InteropServices;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.ADF.CATIDs;
using ESRI.ArcGIS.Controls;
using System.Windows.Forms;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.esriSystem;
namespace WindowsFormsApplication1.tool
{
/// <summary>
/// Summary description for SnapTool.
/// </summary>
[Guid("192f72b4-5043-45cb-8e1a-743ea964fa97")]
[ClassInterface(ClassInterfaceType.None)]
[ProgId("WindowsFormsApplication1.tool.SnapTool")]
public sealed class SnapTool : BaseTool
{
#region COM Registration Function(s)
[ComRegisterFunction()]
[ComVisible(false)]
static void RegisterFunction(Type registerType)
{
// Required for ArcGIS Component Category Registrar support
ArcGISCategoryRegistration(registerType);
//
// TODO: Add any COM registration code here
//
}
[ComUnregisterFunction()]
[ComVisible(false)]
static void UnregisterFunction(Type registerType)
{
// Required for ArcGIS Component Category Registrar support
ArcGISCategoryUnregistration(registerType);
//
// TODO: Add any COM unregistration code here
//
}
#region ArcGIS Component Category Registrar generated code
/// <summary>
/// Required method for ArcGIS Component Category registration -
/// Do not modify the contents of this method with the code editor.
/// </summary>
private static void ArcGISCategoryRegistration(Type registerType)
{
string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID);
MxCommands.Register(regKey);
ControlsCommands.Register(regKey);
}
/// <summary>
/// Required method for ArcGIS Component Category unregistration -
/// Do not modify the contents of this method with the code editor.
/// </summary>
private static void ArcGISCategoryUnregistration(Type registerType)
{
string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID);
MxCommands.Unregister(regKey);
ControlsCommands.Unregister(regKey);
}
#endregion
#endregion
private IHookHelper m_hookHelper = null;
private IPoint m_snapPt;
private ISnappingEnvironment m_SnapEnv;
private IPointSnapper m_Snapper;
private ISnappingFeedback m_SnapFeedback;
private INewLineFeedback m_feedback;
private ISnappingResult m_snapRst;
public SnapTool()
{
//
// TODO: Define values for the public properties
//
base.m_category = ""; //localizable text
base.m_caption = ""; //localizable text
base.m_message = "This should work in ArcMap/MapControl/PageLayoutControl"; //localizable text
base.m_toolTip = ""; //localizable text
base.m_name = ""; //unique id, non-localizable (e.g. "MyCategory_MyTool")
try
{
//
// TODO: change resource name if necessary
//
string bitmapResourceName = GetType().Name + ".bmp";
base.m_bitmap = new Bitmap(GetType(), bitmapResourceName);
base.m_cursor = new System.Windows.Forms.Cursor(GetType(), GetType().Name + ".cur");
}
catch (Exception ex)
{
System.Diagnostics.Trace.WriteLine(ex.Message, "Invalid Bitmap");
}
}
#region Overridden Class Methods
/// <summary>
/// Occurs when this tool is created
/// </summary>
/// <param name="hook">Instance of the application</param>
public override void OnCreate(object hook)
{
try
{
m_hookHelper = new HookHelperClass();
m_hookHelper.Hook = hook;
if (m_hookHelper.ActiveView == null)
{
m_hookHelper = null;
}
}
catch
{
m_hookHelper = null;
}
if (m_hookHelper == null)
base.m_enabled = false;
else
base.m_enabled = true;
// TODO: Add other initialization code
}
/// <summary>
/// Occurs when this tool is clicked
/// </summary>
public override void OnClick()
{
UID uid = new UIDClass();
uid.Value = "{E07B4C52-C894-4558-B804-D4050018D1DA}";
IExtensionManager extMar = (m_hookHelper as IHookHelper2).ExtensionManager;
IExtension ext=extMar.FindExtension(uid);
m_SnapEnv = ext as ISnappingEnvironment;
m_Snapper = m_SnapEnv.PointSnapper;
m_SnapFeedback = new SnappingFeedbackClass();
m_SnapFeedback.Initialize(m_hookHelper.Hook, m_SnapEnv, true);
}
public override void OnMouseDown(int Button, int Shift, int X, int Y)
{
IPoint ppt = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
if (m_snapPt != null)
{
ppt = m_snapPt;
}
if (m_feedback != null)
{
m_feedback = new NewLineFeedbackClass();
m_feedback.Display = m_hookHelper.ActiveView.ScreenDisplay;
m_feedback.Start(ppt);
}
else
{
m_feedback.AddPoint(ppt);
}
}
public override void OnMouseMove(int Button, int Shift, int X, int Y)
{
IPoint ppt = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
m_snapPt = ppt;
m_snapRst = m_Snapper.Snap(m_snapPt);
m_SnapFeedback.Update(m_snapRst, 0);
if (m_snapRst != null)
{
m_snapPt = m_snapRst.Location;
}
if (m_feedback != null)
{
m_feedback.MoveTo(m_snapPt);
}
}
public override void OnMouseUp(int Button, int Shift, int X, int Y)
{
// TODO: Add SnapTool.OnMouseUp implementation
}
#endregion
}
}
转载自：https://blog.csdn.net/wangtao510/article/details/51610785
