ArcEngine绘制点、线、多边形、矩形、圆形、椭圆的代码

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熟悉ArcGIS的同志应该知道在ArcMap中编辑shp文件时，我们可以绘制点、线、多边形、矩形、圆形、椭圆等几何图形。其实在ArcEngine中也可以实现同样的功能，我们可以利用INewLineFeedback等接口实现不同几何图形的绘制。我在这里做了一个demo，界面如下图所示：

1、绘制点
using System;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.ADF.CATIDs;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.DataSourcesFile;
using ESRI.ArcGIS.DataSourcesGDB;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Output;
using ESRI.ArcGIS.SystemUI;

namespace WindowsFormsApplication1.Utility
{
    /// <summary>
    /// Summary description for DrawPointTool.
    /// </summary>
    [Guid("3547308e-1854-45ec-850b-706fac097943")]
    [ClassInterface(ClassInterfaceType.None)]
    [ProgId("WindowsFormsApplication1.Utility.DrawPointTool")]
    public sealed class DrawPointTool : 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);
            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);
            ControlsCommands.Unregister(regKey);

}

#endregion
#endregion

private IHookHelper m_hookHelper;

        public DrawPointTool()
        {
            //
            // TODO: Define values for the public properties
            //
            base.m_category = ""; //localizable text
            base.m_caption = ""; //localizable text
            base.m_message = ""; //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)
        {
            if (m_hookHelper == null)
                m_hookHelper = new HookHelperClass();

m_hookHelper.Hook = hook;

// TODO: Add DrawPointTool.OnCreate implementation
}

        /// <summary>
        /// Occurs when this tool is clicked
        /// </summary>
        public override void OnClick()
        {
            // TODO: Add DrawPointTool.OnClick implementation
        }

        public override void OnMouseDown(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);

            // 颜色
            IRgbColor pRgbColor = new RgbColor();
            pRgbColor.Red = 255;
            pRgbColor.Green = 0;
            pRgbColor.Blue = 0;

            // 点符号
            ISimpleMarkerSymbol pSimpleMarkerSymbol = new SimpleMarkerSymbol();
            pSimpleMarkerSymbol.Color = pRgbColor;
            pSimpleMarkerSymbol.Size = 10;
            pSimpleMarkerSymbol.Style = esriSimpleMarkerStyle.esriSMSCircle;

            // 点元素
            IMarkerElement pMarkerElement = new MarkerElement() as IMarkerElement;
            pMarkerElement.Symbol = pSimpleMarkerSymbol;
            IElement pElement = pMarkerElement as IElement;
            pElement.Geometry = pPoint;

            // 绘制点
            IActiveView pActiveView = m_hookHelper.ActiveView;
            IGraphicsContainer pGraphicsContainer = pActiveView.GraphicsContainer;
            pGraphicsContainer.AddElement(pElement, 0);
            pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
        }

        public override void OnMouseMove(int Button, int Shift, int X, int Y)
        {
            // TODO: Add DrawPointTool.OnMouseMove implementation
        }

        public override void OnMouseUp(int Button, int Shift, int X, int Y)
        {
            // TODO: Add DrawPointTool.OnMouseUp implementation
        }
        #endregion
    }
}
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2、绘制线
using System;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.ADF.CATIDs;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.DataSourcesFile;
using ESRI.ArcGIS.DataSourcesGDB;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Output;
using ESRI.ArcGIS.SystemUI;

namespace WindowsFormsApplication1.Utility
{
    /// <summary>
    /// Summary description for DrawPolylineTool.
    /// </summary>
    [Guid("a6ab0371-ff13-4b44-b470-b06dcd8293d6")]
    [ClassInterface(ClassInterfaceType.None)]
    [ProgId("WindowsFormsApplication1.Utility.DrawPolylineTool")]
    public sealed class DrawPolylineTool : 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
            //
        }

            //
            // TODO: Add any COM unregistration code here
            //
        }

}

#endregion
#endregion

private IHookHelper m_hookHelper;
private INewLineFeedback m_NewLineFeedback;

        public DrawPolylineTool()
        {
            //
            // TODO: Define values for the public properties
            //
            base.m_category = ""; //localizable text
            base.m_caption = ""; //localizable text
            base.m_message = ""; //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

m_hookHelper.Hook = hook;

// TODO: Add DrawPolylineTool.OnCreate implementation
}

        /// <summary>
        /// Occurs when this tool is clicked
        /// </summary>
        public override void OnClick()
        {
            // TODO: Add DrawPolylineTool.OnClick implementation
        }

        public override void OnMouseDown(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
            if (m_NewLineFeedback == null)
            {
                m_NewLineFeedback = new NewLineFeedback();
                m_NewLineFeedback.Display = m_hookHelper.ActiveView.ScreenDisplay;
                m_NewLineFeedback.Start(pPoint);
            }
            else
            {
                m_NewLineFeedback.AddPoint(pPoint);
            }
        }

        public override void OnMouseMove(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
            if (m_NewLineFeedback != null)
            {
                m_NewLineFeedback.MoveTo(pPoint);
            }
        }

        public override void OnMouseUp(int Button, int Shift, int X, int Y)
        {
            // TODO: Add DrawPolylineTool.OnMouseUp implementation
        }

        public override void OnDblClick()
        {
            if (m_NewLineFeedback != null)
            {
                IPolyline pPolyline = m_NewLineFeedback.Stop();
                m_NewLineFeedback = null;

                // 颜色
                IRgbColor pRgbColor = new RgbColor();
                pRgbColor.Red = 0;
                pRgbColor.Green = 255;
                pRgbColor.Blue = 0;

                // 线符号
                ISimpleLineSymbol pSimpleLineSymbol = new SimpleLineSymbol();
                pSimpleLineSymbol.Color = pRgbColor;
                pSimpleLineSymbol.Style = esriSimpleLineStyle.esriSLSDashDotDot;
                pSimpleLineSymbol.Width = 5;

                // 线元素
                ILineElement pLineElement = new LineElement() as ILineElement;
                pLineElement.Symbol = pSimpleLineSymbol;
                IElement pElement = pLineElement as IElement;
                pElement.Geometry = pPolyline;

                // 绘制线
                IActiveView pActiveView = m_hookHelper.ActiveView;
                IGraphicsContainer pGraphicsContainer = pActiveView.GraphicsContainer;
                pGraphicsContainer.AddElement(pElement, 0);
                pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
            }
        }
        #endregion
    }
}
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3、绘制多边形
using System;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.ADF.CATIDs;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.DataSourcesFile;
using ESRI.ArcGIS.DataSourcesGDB;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Output;
using ESRI.ArcGIS.SystemUI;

namespace WindowsFormsApplication1.Utility
{
    /// <summary>
    /// Summary description for DrawPolygonTool.
    /// </summary>
    [Guid("926a3cff-e646-459d-9794-5ff255d5c854")]
    [ClassInterface(ClassInterfaceType.None)]
    [ProgId("WindowsFormsApplication1.Utility.DrawPolygonTool")]
    public sealed class DrawPolygonTool : 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
            //
        }

            //
            // TODO: Add any COM unregistration code here
            //
        }

}

#endregion
#endregion

private IHookHelper m_hookHelper;
private INewPolygonFeedback m_NewPolygonFeedback;

        public DrawPolygonTool()
        {
            //
            // TODO: Define values for the public properties
            //
            base.m_category = ""; //localizable text
            base.m_caption = ""; //localizable text
            base.m_message = ""; //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

m_hookHelper.Hook = hook;

// TODO: Add DrawPolygonTool.OnCreate implementation
}

        /// <summary>
        /// Occurs when this tool is clicked
        /// </summary>
        public override void OnClick()
        {
            // TODO: Add DrawPolygonTool.OnClick implementation
        }

        public override void OnMouseDown(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
            if (m_NewPolygonFeedback == null)
            {
                m_NewPolygonFeedback = new NewPolygonFeedback();
                m_NewPolygonFeedback.Display = m_hookHelper.ActiveView.ScreenDisplay;
                m_NewPolygonFeedback.Start(pPoint);
            }
            else
            {
                m_NewPolygonFeedback.AddPoint(pPoint);
            }
        }

        public override void OnMouseMove(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
            if (m_NewPolygonFeedback != null)
            {
                m_NewPolygonFeedback.MoveTo(pPoint);
            }
        }

        public override void OnMouseUp(int Button, int Shift, int X, int Y)
        {
            // TODO: Add DrawPolygonTool.OnMouseUp implementation
        }

        public override void OnDblClick()
        {
            if (m_NewPolygonFeedback != null)
            {
                IPolygon pPolygon = m_NewPolygonFeedback.Stop();
                m_NewPolygonFeedback = null;

                // 颜色
                IRgbColor pRgbColor = new RgbColor();
                pRgbColor.Red = 0;
                pRgbColor.Green = 0;
                pRgbColor.Blue = 255;

                // 多边形符号
                ISimpleFillSymbol pSimpleFillSymbol = new SimpleFillSymbol();
                pSimpleFillSymbol.Color = pRgbColor;
                pSimpleFillSymbol.Style = esriSimpleFillStyle.esriSFSCross;

                // 多边形元素
                IFillShapeElement pFillShapeElement = new PolygonElement() as IFillShapeElement;
                pFillShapeElement.Symbol = pSimpleFillSymbol;
                IElement pElement = pFillShapeElement as IElement;
                pElement.Geometry = pPolygon;

                // 绘制多边形
                IActiveView pActiveView = m_hookHelper.ActiveView;
                IGraphicsContainer pGraphicsContainer = pActiveView.GraphicsContainer;
                pGraphicsContainer.AddElement(pElement, 0);
                pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
            }
        }
        #endregion
    }
}
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4、绘制矩形
using System;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.ADF.CATIDs;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.DataSourcesFile;
using ESRI.ArcGIS.DataSourcesGDB;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Output;
using ESRI.ArcGIS.SystemUI;

namespace WindowsFormsApplication1.Utility
{
    /// <summary>
    /// Summary description for DrawRectangleTool.
    /// </summary>
    [Guid("884ee227-8201-453f-bff4-59fd0d26dd49")]
    [ClassInterface(ClassInterfaceType.None)]
    [ProgId("WindowsFormsApplication1.Utility.DrawRectangleTool")]
    public sealed class DrawRectangleTool : 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
            //
        }

            //
            // TODO: Add any COM unregistration code here
            //
        }

}

#endregion
#endregion

        private IHookHelper m_hookHelper;
        private INewRectangleFeedback m_NewRectangleFeedback;
        private bool ok;

        public DrawRectangleTool()
        {
            //
            // TODO: Define values for the public properties
            //
            base.m_category = ""; //localizable text
            base.m_caption = ""; //localizable text
            base.m_message = ""; //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

m_hookHelper.Hook = hook;

// TODO: Add DrawRectangleTool.OnCreate implementation
}

        /// <summary>
        /// Occurs when this tool is clicked
        /// </summary>
        public override void OnClick()
        {
            // TODO: Add DrawRectangleTool.OnClick implementation
        }

        public override void OnMouseDown(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
            if (m_NewRectangleFeedback == null)
            {
                m_NewRectangleFeedback = new NewRectangleFeedback() as INewRectangleFeedback;
                m_NewRectangleFeedback.Display = m_hookHelper.ActiveView.ScreenDisplay;
                m_NewRectangleFeedback.Start(pPoint);
            }
            else
            {
                if (ok)
                {
                    IGeometry pGeometry = m_NewRectangleFeedback.Stop(pPoint);
                    m_NewRectangleFeedback = null;

                    // 颜色
                    IRgbColor pRgbColor = new RgbColor();
                    pRgbColor.Red = 255;
                    pRgbColor.Green = 255;
                    pRgbColor.Blue = 0;

                    // 矩形符号
                    ISimpleFillSymbol pSimpleFillSymbol = new SimpleFillSymbol();
                    pSimpleFillSymbol.Color = pRgbColor;
                    pSimpleFillSymbol.Style = esriSimpleFillStyle.esriSFSHorizontal;

                    // 矩形元素
                    IFillShapeElement pFillShapeElement = new RectangleElement() as IFillShapeElement;
                    pFillShapeElement.Symbol = pSimpleFillSymbol;
                    IElement pElement = pFillShapeElement as IElement;
                    pElement.Geometry = pGeometry;

                    // 绘制矩形
                    IActiveView pActiveView = m_hookHelper.ActiveView;
                    IGraphicsContainer pGraphicsContainer = pActiveView.GraphicsContainer;
                    pGraphicsContainer.AddElement(pElement, 0);
                    pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
                }
                else
                {
                    m_NewRectangleFeedback.SetPoint(pPoint);
                }
                ok = !ok;
            }
        }

        public override void OnMouseMove(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
            if (m_NewRectangleFeedback != null)
            {
                m_NewRectangleFeedback.MoveTo(pPoint);
            }
        }

public override void OnMouseUp(int Button, int Shift, int X, int Y)
{

        }
        #endregion
    }
}
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5、绘制圆形
using System;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.ADF.CATIDs;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.DataSourcesFile;
using ESRI.ArcGIS.DataSourcesGDB;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Output;
using ESRI.ArcGIS.SystemUI;

namespace WindowsFormsApplication1.Utility
{
    /// <summary>
    /// Summary description for DrawCircleTool.
    /// </summary>
    [Guid("a3ee1c26-6023-4dc6-81a2-520967d7a724")]
    [ClassInterface(ClassInterfaceType.None)]
    [ProgId("WindowsFormsApplication1.Utility.DrawCircleTool")]
    public sealed class DrawCircleTool : 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
            //
        }

            //
            // TODO: Add any COM unregistration code here
            //
        }

}

#endregion
#endregion

private IHookHelper m_hookHelper;
private INewCircleFeedback m_NewCircleFeedback;

        public DrawCircleTool()
        {
            //
            // TODO: Define values for the public properties
            //
            base.m_category = ""; //localizable text
            base.m_caption = ""; //localizable text
            base.m_message = ""; //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

m_hookHelper.Hook = hook;

// TODO: Add DrawCircleTool.OnCreate implementation
}

        /// <summary>
        /// Occurs when this tool is clicked
        /// </summary>
        public override void OnClick()
        {
            // TODO: Add DrawCircleTool.OnClick implementation
        }

        public override void OnMouseDown(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
            if (m_NewCircleFeedback == null)
            {
                m_NewCircleFeedback = new NewCircleFeedback();
                m_NewCircleFeedback.Display = m_hookHelper.ActiveView.ScreenDisplay;
                m_NewCircleFeedback.Start(pPoint);
            }
            else
            {
                ICircularArc pCircularArc = m_NewCircleFeedback.Stop();
                m_NewCircleFeedback = null;

                // 片段集合
                object missing = Type.Missing;
                ISegmentCollection pSegmentCollection = new Ring() as ISegmentCollection;
                pSegmentCollection.AddSegment(pCircularArc as ISegment, ref missing, ref missing);

                // 转换为环
                IRing pRing = pSegmentCollection as IRing;
                pRing.Close();

                // 转换多边形
                IGeometryCollection pGeometryCollection = new Polygon() as IGeometryCollection;
                pGeometryCollection.AddGeometry(pRing, ref missing, ref missing);
                IPolygon pPolygon = pGeometryCollection as IPolygon;

                // 颜色
                IRgbColor pRgbColor = new RgbColor();
                pRgbColor.Red = 255;
                pRgbColor.Green = 0;
                pRgbColor.Blue = 255;

                // 圆形符号
                ISimpleFillSymbol pSimpleFillSymbol = new SimpleFillSymbol();
                pSimpleFillSymbol.Color = pRgbColor;
                pSimpleFillSymbol.Style = esriSimpleFillStyle.esriSFSCross;

                // 圆形元素
                IFillShapeElement pFillShapeElement = new PolygonElement() as IFillShapeElement;
                pFillShapeElement.Symbol = pSimpleFillSymbol;
                IElement pElement = pFillShapeElement as IElement;
                pElement.Geometry = pPolygon;

                // 绘制圆形
                IActiveView pActiveView = m_hookHelper.ActiveView;
                IGraphicsContainer pGraphicsContainer = pActiveView.GraphicsContainer;
                pGraphicsContainer.AddElement(pElement, 0);
                pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
            }
        }

        public override void OnMouseMove(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
            if (m_NewCircleFeedback != null)
            {
                m_NewCircleFeedback.MoveTo(pPoint);
            }
        }

        public override void OnMouseUp(int Button, int Shift, int X, int Y)
        {
            // TODO: Add DrawCircleTool.OnMouseUp implementation
        }
        #endregion
    }
}
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6、绘制椭圆
using System;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.ADF.CATIDs;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.DataSourcesFile;
using ESRI.ArcGIS.DataSourcesGDB;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Output;
using ESRI.ArcGIS.SystemUI;

namespace WindowsFormsApplication1.Utility
{
    /// <summary>
    /// Summary description for DrawEllipseTool.
    /// </summary>
    [Guid("c3c840c6-a4a0-405c-a6be-a42a7472d90c")]
    [ClassInterface(ClassInterfaceType.None)]
    [ProgId("WindowsFormsApplication1.Utility.DrawEllipseTool")]
    public sealed class DrawEllipseTool : 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
            //
        }

            //
            // TODO: Add any COM unregistration code here
            //
        }

}

#endregion
#endregion

        private IHookHelper m_hookHelper;
        private INewEllipseFeedback m_NewEllipseFeedback;
        private bool ok;

        public DrawEllipseTool()
        {
            //
            // TODO: Define values for the public properties
            //
            base.m_category = ""; //localizable text
            base.m_caption = ""; //localizable text
            base.m_message = ""; //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

m_hookHelper.Hook = hook;

// TODO: Add DrawEllipseTool.OnCreate implementation
}

        /// <summary>
        /// Occurs when this tool is clicked
        /// </summary>
        public override void OnClick()
        {
            // TODO: Add DrawEllipseTool.OnClick implementation
        }

        public override void OnMouseDown(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
            if (m_NewEllipseFeedback == null)
            {
                m_NewEllipseFeedback = new NewEllipseFeedback() as INewEllipseFeedback;
                m_NewEllipseFeedback.Display = m_hookHelper.ActiveView.ScreenDisplay;
                m_NewEllipseFeedback.Start(pPoint);
            }
            else
            {
                if (ok)
                {
                    IGeometry pGeometry = m_NewEllipseFeedback.Stop(pPoint);
                    m_NewEllipseFeedback = null;

                    // 颜色
                    IRgbColor pRgbColor = new RgbColor();
                    pRgbColor.Red = 0;
                    pRgbColor.Green = 255;
                    pRgbColor.Blue = 255;

                    // 椭圆符号
                    ISimpleFillSymbol pSimpleFillSymbol = new SimpleFillSymbol();
                    pSimpleFillSymbol.Color = pRgbColor;
                    pSimpleFillSymbol.Style = esriSimpleFillStyle.esriSFSDiagonalCross;

                    // 椭圆元素
                    IFillShapeElement pFillShapeElement = new EllipseElement() as IFillShapeElement;
                    pFillShapeElement.Symbol = pSimpleFillSymbol;
                    IElement pElement = pFillShapeElement as IElement;
                    pElement.Geometry = pGeometry;

                    // 绘制椭圆
                    IActiveView pActiveView = m_hookHelper.ActiveView;
                    IGraphicsContainer pGraphicsContainer = pActiveView.GraphicsContainer;
                    pGraphicsContainer.AddElement(pElement, 0);
                    pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
                }
                else
                {
                    m_NewEllipseFeedback.SetPoint(pPoint);
                }
                ok = !ok;
            }
        }

        public override void OnMouseMove(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
            if (m_NewEllipseFeedback != null)
            {
                m_NewEllipseFeedback.MoveTo(pPoint);
            }
        }

        public override void OnMouseUp(int Button, int Shift, int X, int Y)
        {
            // TODO: Add DrawEllipseTool.OnMouseUp implementation
        }
        #endregion
    }
}
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7、主界面代码
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.DataSourcesFile;
using ESRI.ArcGIS.DataSourcesGDB;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Output;
using ESRI.ArcGIS.SystemUI;
using WindowsFormsApplication1.Utility;

namespace WindowsFormsApplication1
{
    public partial class MinForm : Form
    {
        public MinForm()
        {
            InitializeComponent();
        }

        // 放大
        private void btnZoomIn_Click(object sender, EventArgs e)
        {
            ICommand command = new ControlsMapZoomInTool();
            command.OnCreate(axMapControl1.Object);
            axMapControl1.CurrentTool = command as ITool;
        }

        // 缩小
        private void btnZoomOut_Click(object sender, EventArgs e)
        {
            ICommand command = new ControlsMapZoomOutTool();
            command.OnCreate(axMapControl1.Object);
            axMapControl1.CurrentTool = command as ITool;
        }

        // 漫游
        private void btnPan_Click(object sender, EventArgs e)
        {
            ICommand command = new ControlsMapPanTool();
            command.OnCreate(axMapControl1.Object);
            axMapControl1.CurrentTool = command as ITool;
        }

        // 全图
        private void btnFullExtent_Click(object sender, EventArgs e)
        {
            ICommand command = new ControlsMapFullExtentCommand();
            command.OnCreate(axMapControl1.Object);
            command.OnClick();
        }

        // 画点
        private void btnDrawPoint_Click(object sender, EventArgs e)
        {
            ICommand command = new DrawPointTool();
            command.OnCreate(axMapControl1.Object);
            axMapControl1.CurrentTool = command as ITool;
        }

        // 画线
        private void btnDrawPolyline_Click(object sender, EventArgs e)
        {
            ICommand command = new DrawPolylineTool();
            command.OnCreate(axMapControl1.Object);
            axMapControl1.CurrentTool = command as ITool;
        }

        // 画多边形
        private void btnDrawPolygon_Click(object sender, EventArgs e)
        {
            ICommand command = new DrawPolygonTool();
            command.OnCreate(axMapControl1.Object);
            axMapControl1.CurrentTool = command as ITool;
        }

        // 画矩形
        private void btnDrawRectangle_Click(object sender, EventArgs e)
        {
            ICommand command = new DrawRectangleTool();
            command.OnCreate(axMapControl1.Object);
            axMapControl1.CurrentTool = command as ITool;
        }

            //
            // TODO: Add any COM registration code here
            //
        }

            //
            // TODO: Add any COM unregistration code here
            //
        }

}

#endregion
#endregion

private IHookHelper m_hookHelper;

#region Overridden Class Methods

m_hookHelper.Hook = hook;

// TODO: Add DrawPointTool.OnCreate implementation
}

        public override void OnMouseDown(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);

            // 颜色
            IRgbColor pRgbColor = new RgbColor();
            pRgbColor.Red = 255;
            pRgbColor.Green = 0;
            pRgbColor.Blue = 0;

        public override void OnMouseMove(int Button, int Shift, int X, int Y)
        {
            // TODO: Add DrawPointTool.OnMouseMove implementation
        }

            //
            // TODO: Add any COM registration code here
            //
        }

            //
            // TODO: Add any COM unregistration code here
            //
        }

}

#endregion
#endregion

private IHookHelper m_hookHelper;
private INewLineFeedback m_NewLineFeedback;

#region Overridden Class Methods

m_hookHelper.Hook = hook;

// TODO: Add DrawPolylineTool.OnCreate implementation
}

        public override void OnMouseUp(int Button, int Shift, int X, int Y)
        {
            // TODO: Add DrawPolylineTool.OnMouseUp implementation
        }

                // 颜色
                IRgbColor pRgbColor = new RgbColor();
                pRgbColor.Red = 0;
                pRgbColor.Green = 255;
                pRgbColor.Blue = 0;

            //
            // TODO: Add any COM registration code here
            //
        }

            //
            // TODO: Add any COM unregistration code here
            //
        }

}

#endregion
#endregion

private IHookHelper m_hookHelper;
private INewPolygonFeedback m_NewPolygonFeedback;

#region Overridden Class Methods

m_hookHelper.Hook = hook;

// TODO: Add DrawPolygonTool.OnCreate implementation
}

        public override void OnMouseDown(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
            if (m_NewPolygonFeedback == null)
            {
                m_NewPolygonFeedback = new NewPolygonFeedback();
                m_NewPolygonFeedback.Display = m_hookHelper.ActiveView.ScreenDisplay;
                m_NewPolygonFeedback.Start(pPoint);
            }
            else
            {
                m_NewPolygonFeedback.AddPoint(pPoint);
            }
        }

        public override void OnMouseMove(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
            if (m_NewPolygonFeedback != null)
            {
                m_NewPolygonFeedback.MoveTo(pPoint);
            }
        }

        public override void OnMouseUp(int Button, int Shift, int X, int Y)
        {
            // TODO: Add DrawPolygonTool.OnMouseUp implementation
        }

                // 颜色
                IRgbColor pRgbColor = new RgbColor();
                pRgbColor.Red = 0;
                pRgbColor.Green = 0;
                pRgbColor.Blue = 255;

            //
            // TODO: Add any COM registration code here
            //
        }

            //
            // TODO: Add any COM unregistration code here
            //
        }

}

#endregion
#endregion

        private IHookHelper m_hookHelper;
        private INewRectangleFeedback m_NewRectangleFeedback;
        private bool ok;

#region Overridden Class Methods

m_hookHelper.Hook = hook;

// TODO: Add DrawRectangleTool.OnCreate implementation
}

        public override void OnMouseDown(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
            if (m_NewRectangleFeedback == null)
            {
                m_NewRectangleFeedback = new NewRectangleFeedback() as INewRectangleFeedback;
                m_NewRectangleFeedback.Display = m_hookHelper.ActiveView.ScreenDisplay;
                m_NewRectangleFeedback.Start(pPoint);
            }
            else
            {
                if (ok)
                {
                    IGeometry pGeometry = m_NewRectangleFeedback.Stop(pPoint);
                    m_NewRectangleFeedback = null;

                    // 颜色
                    IRgbColor pRgbColor = new RgbColor();
                    pRgbColor.Red = 255;
                    pRgbColor.Green = 255;
                    pRgbColor.Blue = 0;

        public override void OnMouseMove(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
            if (m_NewRectangleFeedback != null)
            {
                m_NewRectangleFeedback.MoveTo(pPoint);
            }
        }

public override void OnMouseUp(int Button, int Shift, int X, int Y)
{

            //
            // TODO: Add any COM registration code here
            //
        }

            //
            // TODO: Add any COM unregistration code here
            //
        }

}

#endregion
#endregion

private IHookHelper m_hookHelper;
private INewCircleFeedback m_NewCircleFeedback;

#region Overridden Class Methods

m_hookHelper.Hook = hook;

// TODO: Add DrawCircleTool.OnCreate implementation
}

        public override void OnMouseDown(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
            if (m_NewCircleFeedback == null)
            {
                m_NewCircleFeedback = new NewCircleFeedback();
                m_NewCircleFeedback.Display = m_hookHelper.ActiveView.ScreenDisplay;
                m_NewCircleFeedback.Start(pPoint);
            }
            else
            {
                ICircularArc pCircularArc = m_NewCircleFeedback.Stop();
                m_NewCircleFeedback = null;

                // 转换为环
                IRing pRing = pSegmentCollection as IRing;
                pRing.Close();

                // 颜色
                IRgbColor pRgbColor = new RgbColor();
                pRgbColor.Red = 255;
                pRgbColor.Green = 0;
                pRgbColor.Blue = 255;

        public override void OnMouseMove(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
            if (m_NewCircleFeedback != null)
            {
                m_NewCircleFeedback.MoveTo(pPoint);
            }
        }

            //
            // TODO: Add any COM registration code here
            //
        }

            //
            // TODO: Add any COM unregistration code here
            //
        }

}

#endregion
#endregion

        private IHookHelper m_hookHelper;
        private INewEllipseFeedback m_NewEllipseFeedback;
        private bool ok;

#region Overridden Class Methods

m_hookHelper.Hook = hook;

// TODO: Add DrawEllipseTool.OnCreate implementation
}

        public override void OnMouseDown(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
            if (m_NewEllipseFeedback == null)
            {
                m_NewEllipseFeedback = new NewEllipseFeedback() as INewEllipseFeedback;
                m_NewEllipseFeedback.Display = m_hookHelper.ActiveView.ScreenDisplay;
                m_NewEllipseFeedback.Start(pPoint);
            }
            else
            {
                if (ok)
                {
                    IGeometry pGeometry = m_NewEllipseFeedback.Stop(pPoint);
                    m_NewEllipseFeedback = null;

                    // 颜色
                    IRgbColor pRgbColor = new RgbColor();
                    pRgbColor.Red = 0;
                    pRgbColor.Green = 255;
                    pRgbColor.Blue = 255;

        public override void OnMouseMove(int Button, int Shift, int X, int Y)
        {
            IPoint pPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
            if (m_NewEllipseFeedback != null)
            {
                m_NewEllipseFeedback.MoveTo(pPoint);
            }
        }

namespace WindowsFormsApplication1
{
    public partial class MinForm : Form
    {
        public MinForm()
        {
            InitializeComponent();
        }

        // 画圆
        private void btnDrawCircle_Click(object sender, EventArgs e)
        {
            ICommand command = new DrawCircleTool();
            command.OnCreate(axMapControl1.Object);
            axMapControl1.CurrentTool = command as ITool;
        }

        // 画椭圆
        private void btnDrawEllipse_Click(object sender, EventArgs e)
        {
            ICommand command = new DrawEllipseTool();
            command.OnCreate(axMapControl1.Object);
            axMapControl1.CurrentTool = command as ITool;
        }
    }
}
————————————————
版权声明：本文为CSDN博主「HerryDong」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/HerryDong/article/details/104025797

posted on 2020-03-09 16:02 gisai 阅读(306) 评论(0) 收藏举报

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ArcEngine绘制点、线、多边形、矩形、圆形、椭圆的代码