LIBMAS/Annotation/Measure/MeasureBrokenLine.cs

using PaintDotNet.Annotation.Enum;

using PaintDotNet.Base.CommTool;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Globalization;
using System.Windows.Forms;
using PaintDotNet.Base.SettingModel;
using System.Linq;

namespace PaintDotNet.Annotation.Measure
{
    using PointEnumerator = IEnumerator<PointF>;
    using PointList = List<PointF>;
    /// <summary>
    /// 测量->曲线->折线
    /// </summary>
    class MeasureBrokenLine : MeasureDrawObject
    {
        /// <summary>
        /// 点集合
        /// </summary>
        public PointList pointArray;
        /// <summary>
        /// 属性绘制点
        /// </summary>
        private PointF rotationPoint;
        /// <summary>
        /// 折线长度
        /// </summary>
        private double Length = 0.0;

        /// <summary>
        ///  Graphic objects for hit test
        /// </summary>
        private GraphicsPath areaPath = null;
        private Pen areaPen = null;
        private Region areaRegion = null;
        /// <summary>
        /// 测量信息矩形定义
        /// </summary>
        private RectangleF rectangleF1 = new RectangleF();
        private RectangleF rectangleF2 = new RectangleF();
        private RectangleF rectangleF3 = new RectangleF();
        private RectangleF rectangleF4 = new RectangleF();
        private RectangleF rectangleF5 = new RectangleF();
        private RectangleF rectangleF6 = new RectangleF();
        private RectangleF rectangleF7 = new RectangleF();
        private RectangleF rectangleF8 = new RectangleF();
        private RectangleF rectangleF9 = new RectangleF();
        private RectangleF rectangleF10 = new RectangleF();
        /// <summary>
        /// 文本上用于拖动的点
        /// </summary>
        private Point pointL = new Point();
        /// <summary>
        /// 绘制限制(第一次绘制时)
        /// </summary>
        public bool pointChange = true;
        /// <summary>
        /// 区分移动文本
        /// </summary>
        private int moveKb;
        /// <summary>
        /// 绘制限制(从配置文件加载)
        /// </summary>
        public bool configurationFile = false;
        /// <summary>
        /// 限制绘制(绘制中)
        /// </summary>
        public bool mouseUpPointChange = false;
        /// <summary>
        /// 绘制限制(更改属性时)
        /// </summary>
        private bool SavePointChange;
        /// <summary>
        /// 绘制属性
        /// </summary>
        private string[] drawingPropertiesList;
        /// <summary>
        /// 绘制属性(克隆)
        /// </summary>
        private string[] drawingPropertiesListClone;
        /// <summary>
        /// 旋转角度
        /// </summary>
        private double angle;
        /// <summary>
        /// 标注样式信息model
        /// </summary>
        private MeasureStyleModel.MeasureBrokenLine measurePolylineStyleModel;

        public MeasureStyleModel.MeasureBrokenLine MeasurePolylineStyleModel
        {
            set
            {
                this.measurePolylineStyleModel = value;
            }
        }

        public MeasureBrokenLine() : base()
        {

            this.objectType = DrawClass.Measure;
            this.drawToolType = DrawToolType.MeasureBrokenLine;

            pointArray = new PointList();
            Initialize();
        }

        public MeasureBrokenLine(ISurfaceBox surfaceBox, int x1, int y1, bool clone) : base()
        {
            this.objectType = DrawClass.Measure;
            this.drawToolType = DrawToolType.MeasureBrokenLine;

            MeasurePolylineStyleModel = surfaceBox.GetMeasureStyleModel().measureBrokenLine;
            pointArray = new PointList();
            startPoint.X = x1;
            startPoint.Y = y1;
            if (clone)
                pointArray.Add(new Point(x1, y1));
            this.measurementUnit = (MeasurementUnit)System.Enum.Parse(typeof(MeasurementUnit), surfaceBox.GetPxPerUnit()[0]);
            this.unitString = surfaceBox.GetPxPerUnit()[1];
            this.unit = surfaceBox.GetPxPerUnit()[2];
            surfaceBox.getMeasureInfo().TryGetValue(measurementUnit, out unitLength);
            Initialize();
        }

        public MeasureBrokenLine(ISurfaceBox surfaceBox, List<PointF> points, ParentStyleModel parentStyleModel, Object content) : base()
        {
            this.objectType = DrawClass.Measure;
            this.drawToolType = DrawToolType.MeasureBrokenLine;
            this.ISurfaceBox = surfaceBox;
            measurePolylineStyleModel = (MeasureStyleModel.MeasureBrokenLine)parentStyleModel;
            pointArray = DrawRulerHelper.DeepCopyListByReflect(points);
            this.measurementUnit = (MeasurementUnit)System.Enum.Parse(typeof(MeasurementUnit), surfaceBox.GetPxPerUnit()[0]);
            this.unitString = surfaceBox.GetPxPerUnit()[1];
            this.unit = surfaceBox.GetPxPerUnit()[2];
            surfaceBox.getMeasureInfo().TryGetValue(measurementUnit, out unitLength);
            this.configurationFile = true;
        }

        /// <summary>
        /// Clone this instance
        /// </summary>
        public override DrawObject Clone()
        {
            MeasureBrokenLine drawPolygon = new MeasureBrokenLine(ISurfaceBox, (int)pointArray[0].X, (int)pointArray[0].Y, false);
            drawPolygon.ISurfaceBox = ISurfaceBox;
            drawPolygon.pointArray.Clear();

            foreach (PointF p in this.pointArray)
            {
                drawPolygon.pointArray.Add(p);
            }
            if (drawingPropertiesList != null)
                drawPolygon.drawingPropertiesListClone = drawingPropertiesList;
            FillDrawObjectFields(drawPolygon);
            return drawPolygon;
        }

        public override DrawObject Clone(ISurfaceBox surfaceBox)
        {
            MeasureBrokenLine drawPolygon = new MeasureBrokenLine(surfaceBox, this.GetPoints(), this.measurePolylineStyleModel, null);
            if (drawingPropertiesList != null)
                drawPolygon.drawingPropertiesListClone = drawingPropertiesList;
            FillDrawObjectFields(drawPolygon);
            return drawPolygon;
        }

        /// <summary>
        /// 测量属性
        /// </summary>
        /// <returns></returns>
        public override Dictionary<System.Enum, object> GetData()
        {
            if (data.ContainsKey(MeasureAttributes.MeasureMethod))
                data[MeasureAttributes.MeasureMethod] = PdnResources.GetString("Menu.MeasureAction.CurveLength.Text");
            else
                data.Add(MeasureAttributes.MeasureMethod, PdnResources.GetString("Menu.MeasureAction.CurveLength.Text"));

            if (data.ContainsKey(MeasureAttributes.MeasureUnitCN))
                data[MeasureAttributes.MeasureUnitCN] = this.unitString;
            else
                data.Add(MeasureAttributes.MeasureUnitCN, this.unitString);

            if (data.ContainsKey(MeasureAttributes.MeasureUnitEN))
                data[MeasureAttributes.MeasureUnitEN] = this.unit;
            else
                data.Add(MeasureAttributes.MeasureUnitEN, this.unit);

            if (data.ContainsKey(MeasureAttributes.PixelStartX))
                data[MeasureAttributes.PixelStartX] = startPoint.X;
            else
                data.Add(MeasureAttributes.PixelStartX, startPoint.X);

            if (data.ContainsKey(MeasureAttributes.PixelStartY))
                data[MeasureAttributes.PixelStartY] = startPoint.Y;
            else
                data.Add(MeasureAttributes.PixelStartY, startPoint.Y);

            if (data.ContainsKey(MeasureAttributes.PhysicalStartX))
                data[MeasureAttributes.PhysicalStartX] = Math.Round(startPoint.X * unitLength, decimalPlaces);
            else
                data.Add(MeasureAttributes.PhysicalStartX, Math.Round(startPoint.X * unitLength, decimalPlaces));

            if (data.ContainsKey(MeasureAttributes.PhysicalStartY))
                data[MeasureAttributes.PhysicalStartY] = Math.Round(startPoint.Y * unitLength, decimalPlaces);
            else
                data.Add(MeasureAttributes.PhysicalStartY, Math.Round(startPoint.Y * unitLength, decimalPlaces));

            if (data.ContainsKey(MeasureAttributes.PixelLength))
                data[MeasureAttributes.PixelLength] = Math.Round(Length, decimalPlaces);
            else
                data.Add(MeasureAttributes.PixelLength, Math.Round(Length, decimalPlaces));

            string s = Math.Round(Length * unitLength, decimalPlaces).ToString();
            if (s.IndexOf(".") == -1)
            {
                for (int i = 0; i < decimalPlaces; i++)
                {
                    if (i == 0)
                        s += ".";
                    s += "0";
                }
            }
            else
            {
                int a = s.Length - s.IndexOf(".") - 1;
                if (a < decimalPlaces)
                {
                    for (int i = 0; i < decimalPlaces - a; i++)
                    {
                        s += "0";
                    }
                }
            }
            if (data.ContainsKey(MeasureAttributes.PhysicalLength))
                data[MeasureAttributes.PhysicalLength] = s;
            else
                data.Add(MeasureAttributes.PhysicalLength, s);

            if (data.ContainsKey(MeasureAttributes.NumberOfSegments))
                data[MeasureAttributes.NumberOfSegments] = this.pointArray.Count - 1;
            else
                data.Add(MeasureAttributes.NumberOfSegments, this.pointArray.Count - 1);
            return data;
        }
        
        public override void Draw(Graphics g)
        {
            drawingProperties.TryGetValue(this.drawToolType, out drawingPropertiesList);
            pointChangeObject.TryGetValue(this.drawToolType, out SavePointChange);
            double length = 0f;
            float x1 = 0, y1 = 0;
            float x2, y2;

            PointF firstPoint = new PointF();
            PointF secondPoint = new PointF();
            Matrix mtxSave = g.Transform;
            Matrix matrix = g.Transform;
            if (pointArray.Count >= 2)
            {
                if (drawingPropertiesList == null)
                {
                    drawingPropertiesList = drawingPropertiesListClone;
                    this.configurationFile = true;
                }
                //计算需要旋转的角度
                if (measurePolylineStyleModel.linePosition == 0)
                {
                    angle = BasicCalculationHelper.Angle(pointArray[0], pointArray[1], new PointF(pointArray[0].X, pointArray[1].Y));
                    rotationPoint = pointArray[0];
                }
                else if (measurePolylineStyleModel.linePosition == 1)
                {
                    angle = BasicCalculationHelper.Angle(pointArray[pointArray.Count - 2], pointArray[pointArray.Count - 1], new PointF(pointArray[pointArray.Count - 2].X, pointArray[pointArray.Count - 1].Y));
                    rotationPoint = pointArray[pointArray.Count - 1];
                }
                // 画布旋转
                if (angle < 90)
                {
                    matrix.RotateAt((float)angle, rotationPoint);
                    g.Transform = matrix;
                }
                else
                {
                    if (measurePolylineStyleModel.linePosition == 0)
                    {
                        angle = BasicCalculationHelper.Angle(pointArray[1], pointArray[0], new PointF(pointArray[1].X, pointArray[0].Y));
                    }
                    else if (measurePolylineStyleModel.linePosition == 1)
                    {
                        angle = BasicCalculationHelper.Angle(pointArray[pointArray.Count - 1], pointArray[pointArray.Count - 2], new PointF(pointArray[pointArray.Count - 1].X, pointArray[pointArray.Count - 2].Y));
                    }
                    matrix.RotateAt((float)angle, rotationPoint);
                    g.Transform = matrix;
                }
            }
            SizeF sizeF = new SizeF();
            g.SmoothingMode = SmoothingMode.AntiAlias;
            Color color = Color.FromArgb(measurePolylineStyleModel.lineColor);
            int lineWidth = measurePolylineStyleModel.lineWidth;
            Font textfont = new Font(measurePolylineStyleModel.font, measurePolylineStyleModel.fontSize);
            Brush textbrush = new SolidBrush(Color.FromArgb(measurePolylineStyleModel.textColor));
            // 是否绘制
            if (this.pointChange || this.SavePointChange || this.mouseUpPointChange || this.mouseUpAttribute)
            { 
                // 属性文本的间隔定义
                int offsetValue = measurePolylineStyleModel.fontSize + measurePolylineStyleModel.fontSize / 2;
                int offsetValue1 = measurePolylineStyleModel.lineWidth * 2 / 3;
                int offset = offsetValue1;
                this.pointL = new Point((int)rotationPoint.X, (int)rotationPoint.Y);
                if (drawingPropertiesList != null)
                {
                    // 像素长度
                    if (drawingPropertiesList.Contains(MeasureAttributes.PixelLength.ToString()))
                    {
                        sizeF = g.MeasureString("" + Math.Round(length, decimalPlaces) + "px", textfont);
                        rectangleF8.Location = new Point((int)rotationPoint.X - (int)sizeF.Width / 2, (int)rotationPoint.Y + offset);
                        offset += offsetValue;
                    }
                    // 物理长度
                    if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalLength.ToString()))
                    {
                        string s = Math.Round(length * unitLength, decimalPlaces).ToString();
                        if (s.IndexOf(".") == -1)
                        {
                            for (int i = 0; i < decimalPlaces; i++)
                            {
                                if (i == 0)
                                    s += ".";
                                s += "0";
                            }
                        }
                        else
                        {
                            int a = s.Length - s.IndexOf(".") - 1;
                            if (a < decimalPlaces)
                            {
                                for (int i = 0; i < decimalPlaces - a; i++)
                                {
                                    s += "0";
                                }
                            }
                        }
                        sizeF = g.MeasureString(s + this.unit, textfont);
                        rectangleF9.Location = new Point((int)rotationPoint.X - (int)sizeF.Width / 2, (int)rotationPoint.Y + offset);
                        offset += offsetValue;
                    }
                    // 线段数
                    if (drawingPropertiesList.Contains(MeasureAttributes.NumberOfSegments.ToString()))
                    {
                        sizeF = g.MeasureString("" + (this.pointArray.Count - 1), textfont);
                        rectangleF10.Location = new Point((int)rotationPoint.X - (int)sizeF.Width / 2, (int)rotationPoint.Y + offset);
                        offset += offsetValue;
                    }
                    // 测量方式
                    if (drawingPropertiesList.Contains(MeasureAttributes.MeasureMethod.ToString()))
                    {
                        sizeF = g.MeasureString("" + PdnResources.GetString("Menu.MeasureAction.CurveLength.Text"), textfont);
                        rectangleF1.Location = new Point((int)rotationPoint.X - (int)sizeF.Width / 2, (int)rotationPoint.Y + offset);
                        offset += offsetValue;
                    }
                    // 测量单位(中文)
                    if (drawingPropertiesList.Contains(MeasureAttributes.MeasureUnitCN.ToString()))
                    {
                        sizeF = g.MeasureString("" + this.unitString, textfont);
                        rectangleF2.Location = new Point((int)rotationPoint.X - (int)sizeF.Width / 2, (int)rotationPoint.Y + offset);
                        offset += offsetValue;
                    }
                    // 测量单位(英文)
                    if (drawingPropertiesList.Contains(MeasureAttributes.MeasureUnitEN.ToString()))
                    {
                        sizeF = g.MeasureString("" + this.unit, textfont);
                        rectangleF3.Location = new Point((int)rotationPoint.X - (int)sizeF.Width / 2, (int)rotationPoint.Y + offset);
                        offset += offsetValue;
                    }
                    // 像素起始点X
                    if (drawingPropertiesList.Contains(MeasureAttributes.PixelStartX.ToString()))
                    {
                        sizeF = g.MeasureString("" + startPoint.X, textfont);
                        rectangleF4.Location = new Point((int)rotationPoint.X - (int)sizeF.Width / 2, (int)rotationPoint.Y + offset);
                        offset += offsetValue;
                    }
                    // 像素起始点Y
                    if (drawingPropertiesList.Contains(MeasureAttributes.PixelStartY.ToString()))
                    {
                        sizeF = g.MeasureString("" + startPoint.Y, textfont);
                        rectangleF5.Location = new Point((int)rotationPoint.X - (int)sizeF.Width / 2, (int)rotationPoint.Y + offset);
                        offset += offsetValue;
                    }
                    // 物理起始点X
                    if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalStartX.ToString()))
                    {
                        sizeF = g.MeasureString("" + Math.Round(startPoint.X * unitLength, decimalPlaces), textfont);
                        rectangleF6.Location = new Point((int)rotationPoint.X - (int)sizeF.Width / 2, (int)rotationPoint.Y + offset);
                        offset += offsetValue;
                    }
                    // 物理起始点Y
                    if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalStartY.ToString()))
                    {
                        sizeF = g.MeasureString("" + Math.Round(startPoint.Y * unitLength, decimalPlaces), textfont);
                        rectangleF7.Location = new Point((int)rotationPoint.X - (int)sizeF.Width / 2, (int)rotationPoint.Y + offset);
                        offset += offsetValue;
                    }
                }
            }
            if (pointArray.Count >= 2)
            {
                PointEnumerator enumerator = pointArray.GetEnumerator();

                firstPoint = pointArray[0];
                secondPoint = pointArray[1];

                if (enumerator.MoveNext())
                {
                    x1 = ((PointF)enumerator.Current).X;
                    y1 = ((PointF)enumerator.Current).Y;
                }

                while (enumerator.MoveNext())
                {
                    x2 = ((PointF)enumerator.Current).X;
                    y2 = ((PointF)enumerator.Current).Y;

                    length += BasicCalculationHelper.GetDistance(new PointF(x1, y1), new PointF(x2, y2), decimalPlaces);

                    x1 = x2;
                    y1 = y2;
                }
                if (drawingPropertiesList != null)
                {
                    // 测量方式
                    if (drawingPropertiesList.Contains(MeasureAttributes.MeasureMethod.ToString()))
                    {
                        sizeF = g.MeasureString("" + PdnResources.GetString("Menu.MeasureAction.CurveLength.Text"), textfont);
                        rectangleF1.Width = sizeF.Width;
                        rectangleF1.Height = sizeF.Height;
                        g.DrawString("" + PdnResources.GetString("Menu.MeasureAction.CurveLength.Text"), textfont, textbrush, rectangleF1);
                    }
                    else
                    {
                        rectangleF1 = new RectangleF();
                    }
                    // 测量单位(中文)
                    if (drawingPropertiesList.Contains(MeasureAttributes.MeasureUnitCN.ToString()))
                    {
                        sizeF = g.MeasureString("" + this.unitString, textfont);
                        rectangleF2.Width = sizeF.Width;
                        rectangleF2.Height = sizeF.Height;
                        g.DrawString("" + this.unitString, textfont, textbrush, rectangleF2);
                    }
                    else
                    {
                        rectangleF2 = new RectangleF();
                    }
                    // 测量单位(英文)
                    if (drawingPropertiesList.Contains(MeasureAttributes.MeasureUnitEN.ToString()))
                    {
                        sizeF = g.MeasureString("" + this.unit, textfont);
                        rectangleF3.Width = sizeF.Width;
                        rectangleF3.Height = sizeF.Height;
                        g.DrawString("" + this.unit, textfont, textbrush, rectangleF3);
                    }
                    else
                    {
                        rectangleF3 = new RectangleF();
                    }
                    // 像素起始点X
                    if (drawingPropertiesList.Contains(MeasureAttributes.PixelStartX.ToString()))
                    {
                        sizeF = g.MeasureString("" + startPoint.X, textfont);
                        rectangleF4.Width = sizeF.Width;
                        rectangleF4.Height = sizeF.Height;
                        g.DrawString("" + startPoint.X, textfont, textbrush, rectangleF4);
                    }
                    else
                    {
                        rectangleF4 = new RectangleF();
                    }
                    // 像素起始点Y
                    if (drawingPropertiesList.Contains(MeasureAttributes.PixelStartY.ToString()))
                    {
                        sizeF = g.MeasureString("" + startPoint.Y, textfont);
                        rectangleF5.Width = sizeF.Width;
                        rectangleF5.Height = sizeF.Height;
                        g.DrawString("" + startPoint.Y, textfont, textbrush, rectangleF5);
                    }
                    else
                    {
                        rectangleF5 = new RectangleF();
                    }
                    // 物理起始点X
                    if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalStartX.ToString()))
                    {
                        sizeF = g.MeasureString("" + Math.Round(startPoint.X * unitLength, decimalPlaces), textfont);
                        rectangleF6.Width = sizeF.Width;
                        rectangleF6.Height = sizeF.Height;
                        g.DrawString("" + Math.Round(startPoint.X * unitLength, decimalPlaces), textfont, textbrush, rectangleF6);
                    }
                    else
                    {
                        rectangleF6 = new RectangleF();
                    }
                    // 物理起始点Y
                    if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalStartY.ToString()))
                    {
                        sizeF = g.MeasureString("" + Math.Round(startPoint.Y * unitLength, decimalPlaces), textfont);
                        rectangleF7.Width = sizeF.Width;
                        rectangleF7.Height = sizeF.Height;
                        g.DrawString("" + Math.Round(startPoint.Y * unitLength, decimalPlaces), textfont, textbrush, rectangleF7);
                    }
                    else
                    {
                        rectangleF7 = new RectangleF();
                    }
                    // 像素长度
                    if (drawingPropertiesList.Contains(MeasureAttributes.PixelLength.ToString()))
                    {
                        sizeF = g.MeasureString("" + Math.Round(length, decimalPlaces) + "px", textfont);
                        rectangleF8.Width = sizeF.Width;
                        rectangleF8.Height = sizeF.Height;
                        g.DrawString("" + Math.Round(length, decimalPlaces) + "px", textfont, textbrush, rectangleF8);
                    }
                    else
                    {
                        rectangleF8 = new RectangleF();
                    }
                    // 物理长度
                    if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalLength.ToString()))
                    {
                        string s = Math.Round(length * unitLength, decimalPlaces).ToString();
                        if (s.IndexOf(".") == -1)
                        {
                            for (int i = 0; i < decimalPlaces; i++)
                            {
                                if (i == 0)
                                    s += ".";
                                s += "0";
                            }
                        }
                        else
                        {
                            int a = s.Length - s.IndexOf(".") - 1;
                            if (a < decimalPlaces)
                            {
                                for (int i = 0; i < decimalPlaces - a; i++)
                                {
                                    s += "0";
                                }
                            }
                        }
                        sizeF = g.MeasureString(s + this.unit, textfont);
                        rectangleF9.Width = sizeF.Width;
                        rectangleF9.Height = sizeF.Height;
                        g.DrawString(s + this.unit, textfont, textbrush, rectangleF9);
                    }
                    else
                    {
                        rectangleF9 = new RectangleF();
                    }
                    // 线段数
                    if (drawingPropertiesList.Contains(MeasureAttributes.NumberOfSegments.ToString()))
                    {
                        sizeF = g.MeasureString("" + (this.pointArray.Count - 1), textfont);
                        rectangleF10.Width = sizeF.Width;
                        rectangleF10.Height = sizeF.Height;
                        g.DrawString("" + (this.pointArray.Count - 1), textfont, textbrush, rectangleF10);
                    }
                    else
                    {
                        rectangleF10 = new RectangleF();
                    }
                }
                //还原为原始旋转矩阵
                g.Transform = mtxSave;
                // 折线长度
                this.Length = length;
                Pen pen = new Pen(color, lineWidth);
                pen.DashStyle = (DashStyle)this.measurePolylineStyleModel.lineStyle;
                g.DrawLines(pen, pointArray.ToArray()); //.DrawLine(pen, startPoint.X, startPoint.Y, endPoint.X, endPoint.Y);
                pen.Dispose();
                matrix.Dispose();
                if (this.configurationFile)
                    this.pointChange = false;
                this.mouseUpAttribute = false;
                pointChangeObject.Remove(this.drawToolType);
            }
        }
        /// <summary>
        /// 停止绘制时
        /// </summary>
        /// <param name="up"></param>
        public override void MouseUp(bool up)
        {
            mouseUpPointChange = up;
        }
        public void AddPoint(Point point)
        {
            pointArray.Add(point);
        }

        public override int HandleCount
        {
            get
            {
                return pointArray.Count + 1;
            }
        }

        /// <summary>
        /// Get handle pointscroll by 1-based number
        /// </summary>
        /// <param name="handleNumber"></param>
        /// <returns></returns>
        public override PointF GetHandle(int handleNumber)
        {
            if (handleNumber < 1)
                handleNumber = 1;

            if (handleNumber > pointArray.Count && handleNumber != pointArray.Count + 1)
                handleNumber = pointArray.Count;
            if (handleNumber == pointArray.Count + 1)
                return this.pointL;
            else
                return pointArray[handleNumber - 1];
        }

        public override Cursor GetHandleCursor(int handleNumber)
        {
            return handleCursor;
        }

        public override void MoveHandleTo(Point point, int handleNumber)
        {
            if (handleNumber < 1)
                handleNumber = 1;

            if (handleNumber > pointArray.Count && handleNumber != pointArray.Count + 1)
                handleNumber = pointArray.Count;
            if (handleNumber == pointArray.Count + 1)
            {
                point = SetOffsetAfterRotation(point, rotationPoint, angle);
                if (this.moveKb == 1)
                    this.rectangleF1.Offset(point.X - this.pointL.X, point.Y - this.pointL.Y);
                else if (this.moveKb == 2)
                    this.rectangleF2.Offset(point.X - this.pointL.X, point.Y - this.pointL.Y);
                else if (this.moveKb == 3)
                    this.rectangleF3.Offset(point.X - this.pointL.X, point.Y - this.pointL.Y);
                else if (this.moveKb == 4)
                    this.rectangleF4.Offset(point.X - this.pointL.X, point.Y - this.pointL.Y);
                else if (this.moveKb == 5)
                    this.rectangleF5.Offset(point.X - this.pointL.X, point.Y - this.pointL.Y);
                else if (this.moveKb == 6)
                    this.rectangleF6.Offset(point.X - this.pointL.X, point.Y - this.pointL.Y);
                else if (this.moveKb == 7)
                    this.rectangleF7.Offset(point.X - this.pointL.X, point.Y - this.pointL.Y);
                else if (this.moveKb == 8)
                    this.rectangleF8.Offset(point.X - this.pointL.X, point.Y - this.pointL.Y);
                else if (this.moveKb == 9)
                    this.rectangleF9.Offset(point.X - this.pointL.X, point.Y - this.pointL.Y);
                else if (this.moveKb == 10)
                    this.rectangleF10.Offset(point.X - this.pointL.X, point.Y - this.pointL.Y);
                this.pointL = point;
            }
            else
            {
                this.mouseUpPointChange = true;
                if (handleNumber == 1)
                {
                    this.rectangleF1.Offset(point.X - this.rotationPoint.X, point.Y - this.rotationPoint.Y);
                    this.rectangleF2.Offset(point.X - this.rotationPoint.X, point.Y - this.rotationPoint.Y);
                    this.rectangleF3.Offset(point.X - this.rotationPoint.X, point.Y - this.rotationPoint.Y);
                    this.rectangleF4.Offset(point.X - this.rotationPoint.X, point.Y - this.rotationPoint.Y);
                    this.rectangleF5.Offset(point.X - this.rotationPoint.X, point.Y - this.rotationPoint.Y);
                    this.rectangleF6.Offset(point.X - this.rotationPoint.X, point.Y - this.rotationPoint.Y);
                    this.rectangleF7.Offset(point.X - this.rotationPoint.X, point.Y - this.rotationPoint.Y);
                    this.rectangleF8.Offset(point.X - this.rotationPoint.X, point.Y - this.rotationPoint.Y);
                    this.rectangleF9.Offset(point.X - this.rotationPoint.X, point.Y - this.rotationPoint.Y);
                    this.rectangleF10.Offset(point.X - this.rotationPoint.X, point.Y - this.rotationPoint.Y);
                }
                pointArray[handleNumber - 1] = point;
            }
            this.startPoint = pointArray[0];
            Invalidate();
        }

        public override void Move(int deltaX, int deltaY)
        {
            int n = pointArray.Count;
            PointF point;

            for (int i = 0; i < n; i++)
            {
                point = new PointF(pointArray[i].X + ISurfaceBox.UnscaleScalar(deltaX), pointArray[i].Y + ISurfaceBox.UnscaleScalar(deltaY));

                pointArray[i] = point;
            }
            this.startPoint = pointArray[0];
            int x = ISurfaceBox.UnscaleScalar(deltaX);
            int y = ISurfaceBox.UnscaleScalar(deltaY);
            pointL.X += x;
            pointL.Y += y;
            this.rectangleF1.Offset(x, y);
            this.rectangleF2.Offset(x, y);
            this.rectangleF3.Offset(x, y);
            this.rectangleF4.Offset(x, y);
            this.rectangleF5.Offset(x, y);
            this.rectangleF6.Offset(x, y);
            this.rectangleF7.Offset(x, y);
            this.rectangleF8.Offset(x, y);
            this.rectangleF9.Offset(x, y);
            this.rectangleF10.Offset(x, y);
            Invalidate();
        }

        /// <summary>
        /// 用于创建一个路径或者是闭合的范围
        /// 用于响应点击选中
        /// 需要咨询用户是仅点击线还是矩形选择
        /// </summary>
        protected virtual void CreateObjects()
        {
            if (AreaPath != null)
                return;

            AreaPath = new GraphicsPath();
            AreaPath.AddRectangle(GetBoundingBox());
            AreaPath.CloseFigure();
            AreaRegion = new Region(AreaPath);
        }

        /// <summary>
        /// Invalidate object.
        /// When object is invalidated, path used for hit test
        /// is released and should be created again.
        /// </summary>
        protected void Invalidate()
        {
            if (AreaPath != null)
            {
                AreaPath.Dispose();
                AreaPath = null;
            }

            if (AreaPen != null)
            {
                AreaPen.Dispose();
                AreaPen = null;
            }

            if (AreaRegion != null)
            {
                AreaRegion.Dispose();
                AreaRegion = null;
            }
        }
        protected GraphicsPath AreaPath
        {
            get
            {
                return areaPath;
            }
            set
            {
                areaPath = value;
            }
        }

        protected Pen AreaPen
        {
            get
            {
                return areaPen;
            }
            set
            {
                areaPen = value;
            }
        }

        protected Region AreaRegion
        {
            get
            {
                return areaRegion;
            }
            set
            {
                areaRegion = value;
            }
        }

        /// <summary>
        /// Draw tracker for selected object
        /// </summary>
        /// <param name="g"></param>
        public override void DrawTracker(Graphics g)
        {
            if (!Selected)
                return;
            SolidBrush brush = new SolidBrush(Color.Black);
            for (int i = 1; i <= HandleCount; i++)
            {
                if (i == HandleCount)
                    brush = new SolidBrush(Color.Transparent);
                g.FillRectangle(brush, GetHandleRectangle(i));
            }
            brush.Dispose();

            RectangleF r = GetBoundingBox();
            //g.DrawRectangle(new Pen(Color.White), r.X, r.Y, r.Width, r.Height);
        }

        /// <summary>
        /// Hit test.
        /// Return value: -1 - no hit
        ///                0 - hit anywhere
        ///                > 1 - handle number
        /// </summary>
        /// <param name="pointscroll"></param>
        /// <returns></returns>
        public override int HitTest(Point point)
        {
            if (Selected)
            {
                for (int i = 1; i <= HandleCount; i++)
                {
                    if (GetHandleRectangle(i).Contains(point))
                        return i;
                }
                if (GetRectanglePosition(this.rectangleF1, point, rotationPoint, angle))
                {
                    this.pointL = SetOffsetAfterRotation(point, rotationPoint, angle);
                    moveKb = 1;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF2, point, rotationPoint, angle))
                {
                    this.pointL = SetOffsetAfterRotation(point, rotationPoint, angle);
                    moveKb = 2;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF3, point, rotationPoint, angle))
                {
                    this.pointL = SetOffsetAfterRotation(point, rotationPoint, angle);
                    moveKb = 3;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF4, point, rotationPoint, angle))
                {
                    this.pointL = SetOffsetAfterRotation(point, rotationPoint, angle);
                    moveKb = 4;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF5, point, rotationPoint, angle))
                {
                    this.pointL = SetOffsetAfterRotation(point, rotationPoint, angle);
                    moveKb = 5;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF6, point, rotationPoint, angle))
                {
                    this.pointL = SetOffsetAfterRotation(point, rotationPoint, angle);
                    moveKb = 6;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF7, point, rotationPoint, angle))
                {
                    this.pointL = SetOffsetAfterRotation(point, rotationPoint, angle);
                    moveKb = 7;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF8, point, rotationPoint, angle))
                {
                    this.pointL = SetOffsetAfterRotation(point, rotationPoint, angle);
                    moveKb = 8;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF9, point, rotationPoint, angle))
                {
                    this.pointL = SetOffsetAfterRotation(point, rotationPoint, angle);
                    moveKb = 9;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF10, point, rotationPoint, angle))
                {
                    this.pointL = SetOffsetAfterRotation(point, rotationPoint, angle);
                    moveKb = 10;
                    return this.pointArray.Count + 1;
                }
            }

            if (PointInObject(point))
                return 0;

            return -1;
        }

        protected override bool PointInObject(Point point)
        {
            CreateObjects();

            return AreaRegion.IsVisible(point);
        }
        public override bool IntersectsWith(Rectangle rectangle)
        {
            CreateObjects();

            return AreaRegion.IsVisible(rectangle);
        }
        public override RectangleF GetBoundingBox()
        {
            float minx = 0, maxx = 0, miny = 0, maxy = 0;
            for (int i = 0; i < pointArray.Count; i++)
            {
                if (i == 0)
                {
                    minx = maxx = pointArray[i].X;
                    miny = maxy = pointArray[i].Y;
                }
                else
                {
                    if (pointArray[i].X > maxx) maxx = pointArray[i].X;
                    if (pointArray[i].X < minx) minx = pointArray[i].X;
                    if (pointArray[i].Y > maxy) maxy = pointArray[i].Y;
                    if (pointArray[i].Y < miny) miny = pointArray[i].Y;
                }
            }
            return new RectangleF(minx, miny, maxx - minx, maxy - miny);
        }

        internal void setNextPoint(Point p)
        {
            AddPoint(p);
            //startPoint = endPoint;
            //endPoint = p;
        }

        internal void setEndPoint(Point p)
        {
            endPoint = p;
        }

        public override List<PointF> GetPoints()
        {
            return pointArray;
        }

        public override ParentStyleModel GetStyle()
        {
            return measurePolylineStyleModel;
        }

    }
}