尺寸测量功能界面

CanFly.Canvas/CanFly.Canvas.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+
+  <PropertyGroup>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <BaseOutputPath>..\</BaseOutputPath>
+    <AppendTargetFrameworkToOutputPath>output</AppendTargetFrameworkToOutputPath>
+    <UseWindowsForms>true</UseWindowsForms>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <Platforms>AnyCPU;x64</Platforms>
+  </PropertyGroup>
+
+
+
+  <ItemGroup>
+	  <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+	</ItemGroup>
+
+	<!--<ItemGroup>
+		<PackageReference Include="SkiaSharp" Version="2.88.9" />
+		<PackageReference Include="SkiaSharp.Views" Version="2.88.9" />
+		<PackageReference Include="SkiaSharp.Views.Desktop.Common" Version="2.88.9" />
+		<PackageReference Include="SkiaSharp.Views.Forms" Version="2.88.9" />
+	</ItemGroup>-->
+
+</Project>

CanFly.Canvas/Helper/PointHelper.cs

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+using System;
+using System.Collections.Generic;
+using System.Drawing.Drawing2D;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CanFly.Canvas.Helper
+{
+    public static class PointHelper
+    {
+        public static Point ToPoint(this PointF pf)
+        {
+            return new Point((int)pf.X, (int)pf.Y);
+        }
+
+        /// <summary>
+        /// 将相对于控件的坐标转换为相对于图像的坐标
+        /// </summary>
+        /// <param name="p">控件中指定点的点位坐标，坐标原点为控件左上角</param>
+        /// <returns>该点以图像坐标系为基准的坐标值，坐标原点为图像左上角</returns>
+        public static PointF ToImageCoordinate(this Point p, Matrix m)
+        {
+            PointF pf = new PointF(p.X, p.Y);
+            return ToImageCoordinate(pf, m);
+        }
+
+        /// <summary>
+        /// 将相对于控件的坐标转换为相对于图像的坐标
+        /// </summary>
+        /// <param name="p">控件中指定点的点位坐标，坐标原点为控件左上角</param>
+        /// <returns>该点以图像坐标系为基准的坐标值，坐标原点为图像左上角</returns>
+        public static PointF ToImageCoordinate(this PointF p, Matrix m)
+        {
+            PointF[] ps = new PointF[] { p };
+            Matrix invertMatrix = m.Clone();
+            //想要从旧空间到新空间的逆变换，所以我们需要对这个矩阵求逆
+            invertMatrix.Invert();
+            invertMatrix.TransformPoints(ps);
+            return ps[0];
+        }
+
+        /// <summary>
+        /// 将相对于图像的坐标转换为相对于控件坐标系
+        /// </summary>
+        /// <param name="p">图像中指定点的点位坐标，坐标原点为图像左上角</param>
+        /// <returns>该点以空间坐标系为基准的坐标值，坐标原点为空间坐左上角</returns>
+        public static PointF ToControlCoordinate(this PointF p, Matrix m)
+        {
+            PointF[] ps = new PointF[] { p };
+            m.TransformPoints(ps);
+            return ps[0];
+        }
+
+
+
+
+        public static float Distance(PointF p1, PointF p2)
+        {
+            return (float)Math.Sqrt(Math.Pow(p2.X - p1.X, 2) + Math.Pow(p2.Y - p1.Y, 2));
+        }
+
+        public static float DistanceToLine(PointF point, PointF start, PointF end)
+        {
+            float lineLengthSquared = DistanceSquared(start, end);
+            if (lineLengthSquared == 0)
+            {
+                return Distance(point, start); // 线段的两个端点重合
+            }
+
+            float t = ((point.X - start.X) * (end.X - start.X) + (point.Y - start.Y) * (end.Y - start.Y)) / lineLengthSquared;
+            t = Math.Clamp(t, 0, 1); // 限制 t 在 [0, 1] 范围内
+
+            PointF projection = new PointF(
+                start.X + t * (end.X - start.X),
+                start.Y + t * (end.Y - start.Y));
+
+            return Distance(point, projection);
+        }
+
+
+        public static float DistanceSquared(PointF p1, PointF p2)
+        {
+            return (float)(Math.Pow(p2.X - p1.X, 2) + Math.Pow(p2.Y - p1.Y, 2));
+        }
+
+    }
+}

CanFly.Canvas/Model/ClickArea.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CanFly.Canvas.Model
+{
+    /// <summary>
+    /// 点击的区域
+    /// </summary>
+    internal enum ClickArea
+    {
+
+        /// <summary>
+        /// 未知区域
+        /// </summary>
+        AREA_UNKNOW,
+
+
+        /// <summary>
+        /// 图片区域
+        /// </summary>
+        AREA_IMG,
+
+
+        /// <summary>
+        /// 缺陷元素区域
+        /// </summary>
+        AREA_DEFECT,
+    }
+}

CanFly.Canvas/Model/Cursor.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace LabelSharp.Config
+{
+    public static class CustomCursors
+    {
+
+        public static Cursor CURSOR_DEFAULT = Cursors.Arrow;
+        public static Cursor CURSOR_POINT = Cursors.Hand;
+        public static Cursor CURSOR_DRAW = Cursors.Cross;
+        public static Cursor CURSOR_MOVE = Cursors.Hand;
+        public static Cursor CURSOR_GRAB = Cursors.Hand;
+
+
+
+
+    }
+}

CanFly.Canvas/Model/Exception/InvalidShapeException.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CanFly.Canvas.Model.Exception
+{
+    internal class InvalidShapeException : System.Exception
+    {
+    }
+}

CanFly.Canvas/Shape/BaseShape.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CanFly.Canvas.Shape
+{
+    public abstract class BaseShape
+    {
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+    }
+}

CanFly.Canvas/Shape/DoubleClickActionEnum.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CanFly.Canvas.Shape
+{
+    internal enum DoubleClickActionEnum
+    {
+        None,
+        Close,
+
+    }
+}

CanFly.Canvas/Shape/FlyShape.cs

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+using System;
+using System.Collections.Generic;
+using System.Drawing.Drawing2D;
+using System.Linq;
+using System.Runtime.Serialization.Formatters.Binary;
+using System.Runtime.Serialization;
+using System.Text;
+using System.Threading.Tasks;
+using CanFly.Canvas.Helper;
+using Newtonsoft.Json;
+using System.Diagnostics;
+using System.Net.NetworkInformation;
+using System.Drawing;
+
+
+namespace CanFly.Canvas.Shape
+{
+    [Serializable]
+    public class FlyShape
+    {
+        private const float DFT_VTX_EPSILON = 4f;
+        private float _epsilon = DFT_VTX_EPSILON;
+
+        public float LineWidth { get; set; } = 2f;
+
+
+        #region Shape颜色
+
+        #region drawing
+        public Color line_color = Color.FromArgb(128, 0, 255, 0);
+        public Color fill_color = Color.FromArgb(64, 0, 0, 0);
+        public Color vertex_fill_color = Color.FromArgb(255, 0, 255, 0);
+        #endregion
+
+        #region selecting / hovering
+        public Color select_line_color = Color.FromArgb(255, 255, 255, 255);
+        public Color select_fill_color = Color.FromArgb(64, 0, 255, 0);
+        public Color hvertex_fill_color = Color.FromArgb(255, 255, 255, 255);
+        #endregion
+
+        #endregion
+
+
+        private PointTypeEnum point_type = PointTypeEnum.ROUND;
+        private float point_size = 8.0f;
+
+        private float _scale = 1.0f;
+        private float scale
+        {
+            get
+            {
+                return _scale;
+            }
+            set
+            {
+                _scale = value;
+            }
+        }
+
+
+
+
+        private ShapeTypeEnum _shape_type;
+        private Matrix _matrix = new Matrix();
+
+
+
+
+        public ShapeTypeEnum ShapeType
+        {
+            get => _shape_type;
+            set { _shape_type = value; }
+        }
+
+
+        public string label = "";
+        public int? group_id = null;
+        private List<PointF> _points
+        {
+            get;
+            set;
+        } = new List<PointF>();
+
+        public List<PointF> Points
+        {
+            get { return _points; }
+            set
+            {
+                this._points = value;
+            }
+        }
+
+
+        private List<PointF> _pointsRaw = new List<PointF>();
+
+
+        /// <summary>
+        /// 辅助节点
+        /// </summary>
+        public List<PointF> GuidePoints = new List<PointF>();
+
+        public float _currentRotateAngle;
+        private bool _isRotating = false;
+
+
+        public List<int> point_labels = new List<int>();
+
+
+        private ShapeTypeEnum _shape_type_raw;
+
+
+        /// <summary>
+        /// 是否填充多边形。使用：select_fill_color 或 fill_color 填充。
+        /// </summary>
+        public bool fill = false;
+
+
+        public bool Selected { get; set; } = false;
+        public object? flags;
+        public string description = "";
+        private List<object> other_data = new List<object>();
+
+
+        private int _highlightIndex = -1;
+        private HighlightModeEnum _highlightMode = HighlightModeEnum.NEAR_VERTEX;
+
+
+        private Dictionary<HighlightModeEnum, HighlightSetting> _highlightSettings = new Dictionary<HighlightModeEnum, HighlightSetting>()
+        {
+            { HighlightModeEnum.NEAR_VERTEX,new HighlightSetting(4,PointTypeEnum.ROUND)},
+            { HighlightModeEnum.MOVE_VERTEX,new HighlightSetting(1.5f,PointTypeEnum.SQUARE)},
+        };
+
+
+        private bool _closed = false;
+        private Color _vertex_fill_color;
+
+
+        /// <summary>
+        /// 当图形是Line时，是否绘制辅助矩形框
+        /// </summary>
+        public bool IsDrawLineVirtualRect { get; set; } = false;
+        /// <summary>
+        /// 画Line时辅助矩形的宽度
+        /// </summary>
+        public float LineVirtualRectWidth = 40;
+        public PointF[] LineVirtualRectPoints = new PointF[4];
+
+
+        public FlyShape()
+        {
+
+        }
+
+
+
+        private PointF ScalePoint(PointF point)
+        {
+            return point;
+
+            //return new PointF(
+            //    (float)(point.X * scale),
+            //    (float)(point.Y * scale));
+        }
+
+
+
+
+        public void Close()
+        {
+            this._closed = true;
+        }
+
+
+        public void AddPoint(PointF point, int label = 1)
+        {
+            if (_points != null && _points.Count > 0 && point.Equals(_points.ElementAt(0)))
+            {
+                Close();
+            }
+            else
+            {
+                if (_points.Count > 0 && this[-1].Equals(point))
+                {
+                    return;
+                }
+                _points.Add(point);
+                point_labels.Add(label);
+            }
+        }
+
+
+
+        public bool CanAddPoint()
+        {
+            return ShapeType == ShapeTypeEnum.Polygon
+                || ShapeType == ShapeTypeEnum.LineStrip;
+        }
+
+
+
+        public PointF? PopPoint()
+        {
+            if (_points != null && _points.Count > 0)
+            {
+                if (point_labels != null && point_labels.Count > 0)
+                {
+                    point_labels.RemoveAt(point_labels.Count - 1);
+                }
+
+                PointF lastPoint = _points[_points.Count - 1];
+                _points.RemoveAt(_points.Count - 1);
+                return lastPoint;
+            }
+            return null;
+
+        }
+
+
+
+        public void InsertPoint(int i, PointF point, int label = 1)
+        {
+            _points.Insert(i, point);
+            point_labels.Insert(i, label);
+        }
+
+
+        public void RemovePoint(int i)
+        {
+            if (!CanAddPoint())
+            {
+                return;
+            }
+
+            if (ShapeType == ShapeTypeEnum.Polygon && _points.Count <= 3)
+            {
+                return;
+            }
+            else if (ShapeType == ShapeTypeEnum.LineStrip && _points.Count <= 2)
+            {
+                return;
+            }
+
+
+            _points.RemoveAt(_points.Count - 1);
+            point_labels.RemoveAt(point_labels.Count - 1);
+        }
+
+
+
+        public bool IsClosed() => _closed;
+
+
+        public void SetOpen() { _closed = false; }
+
+
+        #region 矩形辅助函数
+
+        /// <summary>
+        /// 矩形模式下，选中的点索引
+        /// </summary>
+        [JsonIgnore]
+        private int _rectSelectedVertex = -1;
+        [JsonIgnore]
+        private PointF _rectSelectedMoveVertex;
+        [JsonIgnore]
+        private PointF _rectCenterPoint;
+
+        [JsonIgnore]
+        private bool isVertexMoving;
+
+        /// <summary>
+        /// 正在移动节点
+        /// </summary>
+        [JsonIgnore]
+        public bool IsVertexMoving
+        {
+            get
+            {
+                return isVertexMoving;
+            }
+            internal set
+            {
+                //float centerX = (_points[0].X + _points[2].X) / 2f;
+                //float centerY = (_points[0].Y + _points[2].Y) / 2f;
+                //_rectCenterVertex = new PointF(centerX, centerY);
+                isVertexMoving = value;
+            }
+        }
+        //private PointF[] TransformPoints(List<PointF> points, PointF center, float angle)
+        //{
+        //    PointF[] ptsArray = points.ToArray();
+        //    using (Matrix matrix = new Matrix())
+        //    {
+        //        matrix.RotateAt(angle, center);
+        //        matrix.TransformPoints(ptsArray);
+        //    }
+        //    return ptsArray;
+        //}
+        //GraphicsPath vrtx_path = new GraphicsPath();
+
+        #endregion
+
+
+        public void Paint(Graphics painter)
+        {
+            if (_points == null || _points.Count == 0)
+            {
+                return;
+            }
+
+            Color color = Selected ? select_line_color : line_color;
+            using Pen pen = new Pen(color, LineWidth);
+
+            // Create paths
+            GraphicsPath line_path = new GraphicsPath();
+            GraphicsPath vrtx_path = new GraphicsPath();
+            GraphicsPath guide_vrtx_path = new GraphicsPath();
+
+            switch (ShapeType)
+            {
+                //case ShapeTypeEnum.Rectangle:
+                //    {
+                //        if (_points.Count == 2)
+                //        {
+                //            float centerX = (_points[0].X + _points[1].X) / 2f;
+                //            float centerY = (_points[0].Y + _points[1].Y) / 2f;
+                //            _rectCenterPoint = new PointF(centerX, centerY);
+
+
+                //            line_path.StartFigure();
+
+                //            if (_points[1].X < _points[0].X)
+                //            {
+                //                _points[1] = new PointF(_points[0].X + LineWidth / 2f, _points[1].Y);
+                //            }
+                //            if (_points[1].Y < _points[0].Y)
+                //            {
+                //                _points[1] = new PointF(_points[1].X, _points[0].Y + LineWidth / 2f);
+                //            }
+
+                //            //float x = Math.Min(_points[0].X, _points[1].X);
+                //            //float y = Math.Min(_points[0].Y, _points[1].Y);
+
+                //            float w = Math.Abs(ScalePoint(_points[1]).X - ScalePoint(_points[0]).X);
+                //            float h = Math.Abs(ScalePoint(_points[1]).Y - ScalePoint(_points[0]).Y);
+
+                //            RectangleF drawRect = new(new PointF(_points[0].X, _points[0].Y), new SizeF(w, h));
+
+                //            bool bRotated = false;
+                //            NomalizeRotateAngle();
+
+                //            Matrix oMatrix = null;
+
+                //            if (_currentRotateAngle > 0)
+                //            {
+                //                // Create rotation matrix
+                //                oMatrix = new Matrix();
+                //                oMatrix.RotateAt(_currentRotateAngle, _rectCenterPoint, MatrixOrder.Append);
+                //                painter.Transform = oMatrix;
+                //                bRotated = true;
+                //            }
+                //            //Store rectangle region
+                //            //Region _drawRectRegion = new Region(drawRect);
+                //            if (oMatrix != null)
+                //                line_path.Transform(oMatrix);
+
+
+                //            line_path.AddRectangle(drawRect);
+
+
+                //            //  Reset transform
+                //            if (bRotated)
+                //            {
+                //                bRotated = false;
+                //                painter.ResetTransform();
+                //            }
+                //            //_matrix.Reset();
+                //            //_matrix.RotateAt(_currentRotateAngle, new PointF(
+                //            //    (_points[0].X + _points[1].X) / 2,
+                //            //    (_points[0].Y + _points[1].Y) / 2));
+                //            //line_path.Transform(_matrix);
+
+
+                //            //line_path.AddPolygon(_pointsRaw.ToArray());
+
+                //        }
+
+                //        if (_regionVertex.Length != _points.Count)
+                //        {
+                //            _regionVertex = new Region[_points.Count];
+                //        }
+
+
+                //        for (int i = 0; i < _points.Count; i++)
+                //        {
+                //            DrawVertex(vrtx_path, i);
+                //        }
+
+                //        vrtx_path.Transform(_matrix);
+
+                //    }
+
+                //    break;
+                case ShapeTypeEnum.Rectangle:
+                    {
+                        if (_points.Count == 2)
+                        {
+                            float centerX = (_points[0].X + _points[1].X) / 2f;
+                            float centerY = (_points[0].Y + _points[1].Y) / 2f;
+                            _rectCenterPoint = new PointF(centerX, centerY);
+
+                            line_path.StartFigure();
+
+                            if (_points[1].X < _points[0].X)
+                            {
+                                _points[1] = new PointF(_points[0].X + LineWidth / 2f, _points[1].Y);
+                            }
+                            if (_points[1].Y < _points[0].Y)
+                            {
+                                _points[1] = new PointF(_points[1].X, _points[0].Y + LineWidth / 2f);
+                            }
+
+                            float w = Math.Abs(ScalePoint(_points[1]).X - ScalePoint(_points[0]).X);
+                            float h = Math.Abs(ScalePoint(_points[1]).Y - ScalePoint(_points[0]).Y);
+
+                            RectangleF drawRect = new(new PointF(_points[0].X, _points[0].Y), new SizeF(w, h));
+
+                            line_path.AddRectangle(drawRect);
+
+                            _matrix.Reset();
+                            _matrix.RotateAt(_currentRotateAngle, _rectCenterPoint); // 使用更新后的旋转角度
+                            line_path.Transform(_matrix);
+                        }
+
+                        if (_regionVertex.Length != _points.Count)
+                        {
+                            _regionVertex = new Region[_points.Count];
+                        }
+
+                        for (int i = 0; i < _points.Count; i++)
+                        {
+                            DrawVertex1(vrtx_path, i);
+                        }
+
+                        vrtx_path.Transform(_matrix);
+
+
+                    }
+                    break;
+                case ShapeTypeEnum.Circle:
+                    {
+                        if (_points.Count == 2)
+                        {
+                            float radius = PointHelper.Distance(ScalePoint(_points[0]), ScalePoint(_points[1]));
+                            line_path.AddEllipse(
+                                ScalePoint(_points[0]).X - radius,
+                                ScalePoint(_points[0]).Y - radius,
+                                radius * 2,
+                                radius * 2);
+                        }
+                        for (int i = 0; i < _points.Count; i++)
+                        {
+                            DrawVertex(vrtx_path, i);
+                        }
+                    }
+                    break;
+
+                case ShapeTypeEnum.LineStrip:
+                    {
+                        line_path.StartFigure();
+                        line_path.AddLine(ScalePoint(_points[0]), ScalePoint(_points[0]));
+
+                        for (int i = 0; i < _points.Count; i++)
+                        {
+                            PointF pt = _points[i];
+                            line_path.AddLine(ScalePoint(pt), ScalePoint(pt));
+                            DrawVertex(vrtx_path, i);
+                        }
+                    }
+                    break;
+
+                case ShapeTypeEnum.Line:
+                    {
+                        // 添加框线到路径
+                        var tmpPoints = _points.Select(p => ScalePoint(p)).ToList();
+                        line_path.AddLines(tmpPoints.ToArray());
+
+                        if (IsDrawLineVirtualRect && tmpPoints.Count == 2)
+                        {
+                            var center = new PointF((tmpPoints[0].X + tmpPoints[1].X) / 2,
+                                (tmpPoints[0].Y + tmpPoints[1].Y) / 2);
+
+                            // 计算两点之间的角度
+                            float dx = tmpPoints[1].X - tmpPoints[0].X;
+                            float dy = tmpPoints[1].Y - tmpPoints[0].Y;
+                            float distance = PointHelper.Distance(tmpPoints[0], tmpPoints[1]);
+                            double angle = Math.Atan2(dy, dx) * (180.0 / Math.PI); // 转换为度数
+
+                            float l = center.X - distance / 2;
+                            float t = center.Y - LineVirtualRectWidth / 2;
+                            float r = center.X + distance / 2;
+                            float b = center.Y + LineVirtualRectWidth / 2;
+
+                            PointF ptLT = new PointF(l, t);
+                            PointF ptRT = new PointF(r, t);
+                            PointF ptRB = new PointF(r, b);
+                            PointF ptLB = new PointF(l, b);
+#if false
+                            RectangleF rect = new RectangleF(ptLT, new SizeF(distance, LineVirtualRectWidth));
+
+                            GraphicsPath rectPath = new GraphicsPath();
+                            rectPath.AddRectangle(rect);
+
+                            //// 设置矩阵以进行旋转和位移
+                            Matrix matrix = new Matrix();
+                            matrix.RotateAt((float)angle, center); // 旋转
+
+                            // 应用变换
+                            rectPath.Transform(matrix);
+                            // 画框线
+                            painter.DrawPath(pen, rectPath);
+#else
+                            RectangleF rect = new RectangleF(ptLT, new SizeF(distance, LineVirtualRectWidth));
+
+                            LineVirtualRectPoints = new PointF[4] {
+                                ptLT,ptRT,ptRB,ptLB
+                            };
+
+                            //// 设置矩阵以进行旋转和位移
+                            Matrix matrix = new Matrix();
+                            matrix.RotateAt((float)angle, center); // 旋转
+                            matrix.TransformPoints(LineVirtualRectPoints);
+
+                            GraphicsPath rectPath = new GraphicsPath();
+                            rectPath.AddPolygon(LineVirtualRectPoints);
+
+                            Pen rectpen = new Pen(Color.FromArgb(60, 0, 255, 0), 1);
+
+                            // 画框线
+                            painter.DrawPath(rectpen, rectPath);
+
+#endif 
+                        }
+
+
+                        // 添加节点到路径  
+                        for (int i = 0; i < _points.Count; i++)
+                        {
+                            DrawVertex(vrtx_path, i);
+                        }
+
+                        if (IsClosed())
+                        {
+                            line_path.AddLine(ScalePoint(_points[0]), ScalePoint(_points[0]));
+                        }
+                    }
+                    break;
+                case ShapeTypeEnum.Polygon:
+                case ShapeTypeEnum.Point:
+                default:
+                    {
+                        // 添加多边形框线到路径
+                        line_path.AddLines(_points.Select(p => ScalePoint(p)).ToArray());
+
+                        // 添加节点到路径  
+                        for (int i = 0; i < _points.Count; i++)
+                        {
+                            DrawVertex(vrtx_path, i);
+                        }
+
+                        if (IsClosed())
+                        {
+                            line_path.AddLine(ScalePoint(_points[0]), ScalePoint(_points[0]));
+                        }
+                    }
+                    break;
+
+            }
+
+
+            #region 将点绘制到画布上
+
+            // 画框线
+            painter.DrawPath(pen, line_path);
+
+            // 填充节点
+            if (vrtx_path.PointCount > 0)
+            {
+                painter.DrawPath(pen, vrtx_path);
+                painter.FillPath(new SolidBrush(vertex_fill_color), vrtx_path);
+            }
+
+
+            if (fill) // 是否填充多边形
+            {
+                Color fillColor = Selected ? select_fill_color : fill_color;
+                painter.FillPath(new SolidBrush(fillColor), line_path);
+            }
+
+            #endregion
+
+        }
+
+
+        private Region[] _regionVertex = new Region[] { };
+
+        private void DrawVertex1(GraphicsPath path, int i)
+        {
+            PointF pt = _points[i];
+            _regionVertex[i] = new Region(new RectangleF(
+                pt.X - _epsilon, pt.Y - _epsilon,
+                _epsilon * 2, _epsilon * 2));
+
+            // 将节点变换
+            PointF[] transformedPoint = new PointF[] { pt };
+            _matrix.TransformPoints(transformedPoint);  // 变换节点位置
+
+            pt = transformedPoint[0];  // 获取变换后的节点位置
+
+            // 绘制节点
+            float d = point_size; // Point size
+            PointTypeEnum shape = point_type; // Point shape
+            PointF point = ScalePoint(pt);
+
+            if (i == _highlightIndex)
+            {
+                var setting = _highlightSettings[_highlightMode];
+                var size = setting.PointSize;
+                shape = setting.PointType;
+                d *= size; // Example for highlighting
+            }
+
+            if (_highlightIndex >= 0)
+            {
+                _vertex_fill_color = hvertex_fill_color;
+            }
+            else
+            {
+                _vertex_fill_color = vertex_fill_color;
+            }
+
+            switch (shape)
+            {
+                case PointTypeEnum.SQUARE:
+                    path.AddRectangle(new RectangleF(point.X - d / 2, point.Y - d / 2, d, d));
+                    break;
+                case PointTypeEnum.ROUND:
+                    path.AddEllipse(point.X - d / 2, point.Y - d / 2, d, d);
+                    break;
+                default:
+                    throw new InvalidOperationException("Unsupported vertex shape");
+            }
+        }
+        private void DrawVertex(GraphicsPath path, int i)
+        {
+            PointF pt = _points[i];
+
+            float d = point_size; // Point size
+            PointTypeEnum shape = point_type; // Point shape
+            PointF point = ScalePoint(pt);
+
+            if (i == _highlightIndex)
+            {
+                var setting = _highlightSettings[_highlightMode];
+                var size = setting.PointSize;
+                shape = setting.PointType;
+                d *= size; // Example for highlighting
+            }
+
+            if (_highlightIndex >= 0)
+            {
+                _vertex_fill_color = hvertex_fill_color;
+            }
+            else
+            {
+                _vertex_fill_color = vertex_fill_color;
+            }
+
+            switch (shape)
+            {
+                case PointTypeEnum.SQUARE:
+                    path.AddRectangle(new RectangleF(point.X - d / 2, point.Y - d / 2, d, d));
+                    break;
+                case PointTypeEnum.ROUND:
+                    path.AddEllipse(point.X - d / 2, point.Y - d / 2, d, d);
+                    break;
+                default:
+                    throw new InvalidOperationException("Unsupported vertex shape");
+            }
+
+
+        }
+
+
+        /// <summary>
+        /// 查找离鼠标最近且距离小于阈值的节点
+        /// </summary>
+        /// <param name="point">鼠标位置</param>
+        /// <param name="epsilon">阈值</param>
+        /// <returns>返回节点的索引</returns>
+        public int NearestVertex(PointF point, float epsilon = DFT_VTX_EPSILON)
+        {
+            switch (ShapeType)
+            {
+                case ShapeTypeEnum.Rectangle:
+                    {
+
+                        for (int i = 0; i < _regionVertex.Length; i++)
+                        {
+                            if (_regionVertex[i] == null)
+                            {
+                               break;
+                            }
+                            if (_regionVertex[i].IsVisible(point))
+                            {
+                                return i;
+                            }
+                        }
+                    }
+                    break;
+                default:
+                    {
+                        _epsilon = epsilon;
+                        float min_distance = float.MaxValue;
+                        int min_i = -1;
+
+                        PointF scaledPoint = new PointF(point.X * scale, point.Y * scale);
+
+                        for (int i = 0; i < _points.Count; i++)
+                        {
+                            // 缩放顶点
+                            PointF scaledVertex = new PointF(_points[i].X * scale, _points[i].Y * scale);
+                            float dist = PointHelper.Distance(scaledVertex, scaledPoint);
+
+                            // 检查距离是否在 epsilon 范围内
+                            if (dist <= epsilon && dist < min_distance)
+                            {
+                                min_distance = dist;
+                                min_i = i;
+                            }
+                        }
+
+                        return min_i;
+                    }
+            }
+
+            return -1;
+
+        }
+
+
+        public int NearestEdge(PointF point, float epsilon)
+        {
+            float min_distance = float.MaxValue;
+            int post_i = -1;
+
+            PointF scaledPoint = new PointF(point.X * scale, point.Y * scale);
+
+
+
+            for (int i = 0; i < _points.Count; i++)
+            {
+                // 计算边的两个端点
+                PointF start = new PointF(this[i - 1].X * scale, this[i - 1].Y * scale);
+                PointF end = new PointF(this[i].X * scale, this[i].Y * scale);
+
+                // 计算到线段的距离
+                float dist = PointHelper.DistanceToLine(scaledPoint, start, end);
+
+                // 检查距离是否在 epsilon 范围内
+                if (dist <= epsilon && dist < min_distance)
+                {
+                    min_distance = dist;
+                    post_i = i;
+                }
+            }
+
+            return post_i;
+        }
+
+
+        public bool ContainsPoint(PointF point)
+        {
+            return MakePath().IsVisible(point);
+        }
+
+
+
+        private GraphicsPath MakePath()
+        {
+            GraphicsPath path = new GraphicsPath();
+
+            if (ShapeType == ShapeTypeEnum.Rectangle)
+            {
+                if (_points.Count == 2)
+                {
+                    // 创建矩形路径
+                    RectangleF rect = new RectangleF(
+                        Math.Min(_points[0].X, _points[1].X),
+                        Math.Min(_points[0].Y, _points[1].Y),
+                        Math.Abs(_points[1].X - _points[0].X),
+                        Math.Abs(_points[1].Y - _points[0].Y));
+
+                    path.AddRectangle(rect);
+                }
+            }
+            else if (ShapeType == ShapeTypeEnum.Circle)
+            {
+                if (_points.Count == 2)
+                {
+                    // 计算半径
+                    float radius = PointHelper.Distance(_points[0], _points[1]);
+                    path.AddEllipse(_points[0].X - radius, _points[0].Y - radius, radius * 2, radius * 2);
+                }
+            }
+            else
+            {
+                // 处理多边形
+                path.StartFigure();
+                path.AddLine(_points[0], _points[1]);
+
+                for (int i = 2; i < _points.Count; i++)
+                {
+                    path.AddLine(_points[i - 1], _points[i]);
+                }
+                path.CloseFigure(); // 结束图形
+            }
+
+            return path;
+        }
+
+
+        public RectangleF BoundingRect()
+        {
+            return MakePath().GetBounds();
+        }
+
+
+
+        public void MoveBy(PointF offset)
+        {
+            for (int i = 0; i < _points.Count; i++)
+            {
+                _points[i] = new PointF(_points[i].X + offset.X, _points[i].Y + offset.Y);
+            }
+        }
+
+
+        /// <summary>
+        /// 移动特定顶点
+        /// </summary>
+        /// <param name="index"></param>
+        /// <param name="offset"></param>
+        /// <exception cref="ArgumentOutOfRangeException"></exception>
+        public void MoveVertexBy(int index, PointF offset)
+        {
+            if (index >= 0 && index < _points.Count)
+            {
+                _rectSelectedVertex = index;
+                _rectSelectedMoveVertex = new PointF(_points[index].X, _points[index].Y);
+                _points[index] = new PointF(_points[index].X + offset.X, _points[index].Y + offset.Y);
+            }
+            else
+            {
+                throw new ArgumentOutOfRangeException(nameof(index), "Index is out of range.");
+            }
+        }
+
+
+        public void HighlightVertex(int i, HighlightModeEnum action)
+        {
+            this._highlightIndex = i;
+            this._highlightMode = action;
+        }
+
+
+
+        public void HighlightClear()
+        {
+            _highlightIndex = -1;
+        }
+
+
+        public FlyShape Copy()
+        {
+            var jsonStr = JsonConvert.SerializeObject(this);
+            FlyShape copyShp = JsonConvert.DeserializeObject<FlyShape>(jsonStr);
+            return copyShp;
+        }
+
+
+
+        public int Length => _points.Count();
+
+
+
+        public PointF this[int index]
+        {
+
+            get
+            {
+                if (index == -1)
+                {
+                    return _points[_points.Count - 1];
+                }
+                return _points[index];
+            }
+            set
+            {
+                if (index == -1)
+                {
+                    _points[_points.Count - 1] = value;
+                }
+                else
+                {
+                    _points[index] = value;
+                }
+            }
+
+        }
+
+
+
+        private void NomalizeRotateAngle()
+        {
+            if (_currentRotateAngle >= 360)
+            {
+                _currentRotateAngle %= 360;
+            }
+            else if (_currentRotateAngle < 0)
+            {
+                _currentRotateAngle = 360 - (-_currentRotateAngle % 360);
+            }
+        }
+
+    }
+}

CanFly.Canvas/Shape/HighlightSetting.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CanFly.Canvas.Shape
+{
+
+    public enum PointTypeEnum
+    {
+        SQUARE = 0,
+        ROUND = 1,
+    }
+
+
+    public enum HighlightModeEnum
+    {
+        MOVE_VERTEX = 0,
+        NEAR_VERTEX = 1,
+    }
+
+
+    [Serializable]
+    public class HighlightSetting
+    {
+
+
+        public float PointSize { get; set; }
+
+
+        public PointTypeEnum PointType { get; set; }
+
+
+
+        public HighlightSetting(float pointSize, PointTypeEnum pointType)
+        {
+            this.PointSize = pointSize;
+            PointType = pointType;
+        }
+
+
+    }
+
+}

CanFly.Canvas/Shape/ShapeTypeEnum.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CanFly.Canvas.Shape
+{
+    public enum ShapeTypeEnum
+    {
+
+
+        Point,
+        Line,
+        Rectangle,
+        Circle,
+        Polygon,
+        LineStrip,
+
+
+    }
+}

CanFly.Canvas/UI/FlyCanvas.Designer.cs

@@ -0,0 +1,56 @@
+namespace CanFly.Canvas.UI
+{
+    partial class FlyCanvas
+    {
+        /// <summary>
+        /// 必需的设计器变量。
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        ///// <summary> 
+        ///// 清理所有正在使用的资源。
+        ///// </summary>
+        ///// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
+        //protected override void Dispose(bool disposing)
+        //{
+        //    if (disposing && (components != null))
+        //    {
+        //        components.Dispose();
+        //    }
+        //    base.Dispose(disposing);
+        //}
+
+        #region 组件设计器生成的代码
+
+        /// <summary>
+        /// 设计器支持所需的方法 - 不要修改
+        /// 使用代码编辑器修改此方法的内容。
+        /// </summary>
+        private void InitializeComponent()
+        {
+            components = new System.ComponentModel.Container();
+
+            SuspendLayout();
+
+            // 
+            // Canvas
+            // 
+            AutoScaleDimensions = new SizeF(7F, 17F);
+            AutoScaleMode = AutoScaleMode.Font;
+            Margin = new Padding(2);
+            Name = "Canvas";
+            Size = new Size(96, 106);
+            SizeChanged += Canvas_SizeChanged;
+            KeyDown += FlyCanvas_KeyDown;
+            MouseDoubleClick += FlyCanvas_MouseDoubleClick;
+            MouseDown += FlyCanvas_MouseDown;
+            MouseMove += FlyCanvas_OnMouseMove;
+            MouseUp += FlyCanvas_MouseUp;
+            MouseWheel += FlyCanvas_MouseWheel;
+
+            ResumeLayout(false);
+        }
+
+        #endregion
+    }
+}

CanFly.Canvas/UI/FlyCanvas.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>