LIBMAS/Annotation/Measure/MeasureCircle.cs

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

namespace PaintDotNet.Annotation.Measure
{
    using PointList = List<PointF>;
    /// <summary>
    /// 测量->圆->三点圆
    /// </summary>
    public class MeasureCircle : MeasureDrawObject
    {
        /// <summary>
        /// 点集合
        /// </summary>
        public PointList pointArray;
        /// <summary>
        /// 样式
        /// </summary>
        private MeasureStyleModel.MeasureCircle measureCircle;
        /// <summary>
        /// 箭头的原点
        /// </summary>
        PointF linePoint;
        /// <summary>
        /// 文字的原点
        /// </summary>
        PointF messagePoint;
        /// <summary>
        /// 辅助计算旋转角度的点
        /// </summary>
        PointF lastPoint;
        /// <summary>
        /// 圆心横坐标
        /// </summary>
        double x0;
        /// <summary>
        /// 圆心纵坐标
        /// </summary>
        double y0;
        /// <summary>
        /// 直径
        /// </summary>
        double radius = 0;
        /// <summary>
        /// 圆的旋转角度
        /// </summary>
        double angle = 0;
        double jangle = 0;
        /// <summary>
        /// 箭头的旋转角度
        /// </summary>
        double arrowAngle = 0;
        /// <summary>
        /// 辅助为箭头及文字原点赋初始值
        /// </summary>
        public bool arrowPosition = true;

        public bool isPress = false;
        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();
        private RectangleF rectangleF11 = new RectangleF();
        private RectangleF rectangleF12 = new RectangleF();
        private RectangleF rectangleF13 = new RectangleF();
        private RectangleF rectangleF14 = new RectangleF();
        private RectangleF rectangleF15 = 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>
        /// 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>
        /// 限制绘制(绘制中)
        /// </summary>
        public bool mouseUpPointChange = false;
        public MeasureCircle(ISurfaceBox surfaceBox) : base(surfaceBox)
        {
            this.objectType = DrawClass.Measure;
            this.drawToolType = DrawToolType.MeasureCircle;

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

        public MeasureCircle(ISurfaceBox surfaceBox, int x1, int y1, bool clone) : base(surfaceBox)
        {
            this.objectType = DrawClass.Measure;
            this.drawToolType = DrawToolType.MeasureCircle;
            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);
            measureCircle = this.ISurfaceBox.GetMeasureStyleModel().measureCircle;
            pointArray = new PointList();
            if (clone)
                pointArray.Add(new Point(x1, y1));
            Initialize();
        }

        public MeasureCircle(ISurfaceBox surfaceBox, List<PointF> points, ParentStyleModel parentStyleModel, Object content) : base()
        {
            this.objectType = DrawClass.Measure;
            this.drawToolType = DrawToolType.MeasureCircle;
            this.ISurfaceBox = surfaceBox;
            measureCircle = (MeasureStyleModel.MeasureCircle)parentStyleModel;
            pointArray = DrawRulerHelper.DeepCopyListByReflect(points);
            startPoint = points[0];
            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()
        {
            MeasureCircle drawRectangle = new MeasureCircle(ISurfaceBox, (int)pointArray[0].X, (int)pointArray[0].Y, false);
            drawRectangle.objectType = DrawClass.Measure;
            drawRectangle.drawToolType = DrawToolType.MeasureCircle;
            drawRectangle.ISurfaceBox = ISurfaceBox;
            foreach (PointF p in this.pointArray)
            {
                drawRectangle.pointArray.Add(p);
            }
            if (drawingPropertiesList != null)
                drawRectangle.drawingPropertiesListClone = drawingPropertiesList;
            FillDrawObjectFields(drawRectangle);
            return drawRectangle;
        }

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

        /// <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.CircularMeasurement.Text");
            else
                data.Add(MeasureAttributes.MeasureMethod, PdnResources.GetString("Menu.MeasureAction.CircularMeasurement.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.PixelArea))
                data[MeasureAttributes.PixelArea] = Math.Round(Math.PI * (radius / 2) * (radius / 2), decimalPlaces);
            else
                data.Add(MeasureAttributes.PixelArea, Math.Round(Math.PI * (radius / 2) * (radius / 2), decimalPlaces));

            string s = Math.Round(Math.PI * (radius / 2) * (radius / 2) * unitLength, decimalPlaces).ToString();
            if (s.IndexOf(".") == -1)
            {
                for (int i = 0; i < decimalPlaces; i++)
                {
                    if (i == 0)
                        s += ".";
                    s += "0";
                }
            }
            else
            {
                int dic = s.Length - s.IndexOf(".") - 1;
                if (dic < decimalPlaces)
                {
                    for (int i = 0; i < decimalPlaces - dic; i++)
                    {
                        s += "0";
                    }
                }
            }
            if (data.ContainsKey(MeasureAttributes.PhysicalArea))
                data[MeasureAttributes.PhysicalArea] = s;
            else
                data.Add(MeasureAttributes.PhysicalArea, s);

            if (data.ContainsKey(MeasureAttributes.PixelCircumference))
                data[MeasureAttributes.PixelCircumference] = Math.Round(Math.PI * radius, decimalPlaces);
            else
                data.Add(MeasureAttributes.PixelCircumference, Math.Round(Math.PI * radius, decimalPlaces));

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

            if (data.ContainsKey(MeasureAttributes.PixelCenterX))
                data[MeasureAttributes.PixelCenterX] = Math.Round(this.x0, decimalPlaces);
            else
                data.Add(MeasureAttributes.PixelCenterX, Math.Round(this.x0, decimalPlaces));

            if (data.ContainsKey(MeasureAttributes.PixelCenterY))
                data[MeasureAttributes.PixelCenterY] = Math.Round(this.y0, decimalPlaces);
            else
                data.Add(MeasureAttributes.PixelCenterY, Math.Round(this.y0, decimalPlaces));

            if (data.ContainsKey(MeasureAttributes.PhysicalCenterX))
                data[MeasureAttributes.PhysicalCenterX] = Math.Round(this.x0 * unitLength, decimalPlaces);
            else
                data.Add(MeasureAttributes.PhysicalCenterX, Math.Round(this.x0 * unitLength, decimalPlaces));

            if (data.ContainsKey(MeasureAttributes.PhysicalCenterY))
                data[MeasureAttributes.PhysicalCenterY] = Math.Round(this.y0 * unitLength, decimalPlaces);
            else
                data.Add(MeasureAttributes.PhysicalCenterY, Math.Round(this.y0 * unitLength, decimalPlaces));

            if (data.ContainsKey(MeasureAttributes.PixelRadius))
                data[MeasureAttributes.PixelRadius] = Math.Round(radius / 2, decimalPlaces);
            else
                data.Add(MeasureAttributes.PixelRadius, Math.Round(radius / 2, decimalPlaces));

            s = Math.Round(radius / 2 * unitLength, decimalPlaces).ToString();
            if (s.IndexOf(".") == -1)
            {
                for (int i = 0; i < decimalPlaces; i++)
                {
                    if (i == 0)
                        s += ".";
                    s += "0";
                }
            }
            else
            {
                int dic = s.Length - s.IndexOf(".") - 1;
                if (dic < decimalPlaces)
                {
                    for (int i = 0; i < decimalPlaces - dic; i++)
                    {
                        s += "0";
                    }
                }
            }
            if (data.ContainsKey(MeasureAttributes.PhysicalRadius))
                data[MeasureAttributes.PhysicalRadius] = s;
            else
                data.Add(MeasureAttributes.PhysicalRadius,s);

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

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

            return data;
        }
        
        public override void Draw(Graphics g)
        {
            drawingProperties.TryGetValue(this.drawToolType, out drawingPropertiesList);
            pointChangeObject.TryGetValue(this.drawToolType, out SavePointChange);
            Color color = Color.FromArgb(this.measureCircle.lineColor);
            Pen pen = new Pen(color, PenWidth);
            int penWidth = this.measureCircle.lineWidth;
            pen.DashStyle = (DashStyle)this.measureCircle.lineStyle;
            pen.Width = penWidth;

            Font textfont = new Font(measureCircle.font, measureCircle.fontSize);
            Brush textbrush = new SolidBrush(Color.FromArgb(measureCircle.textColor));
            Pen linePen = new Pen(Color.FromArgb(measureCircle.lineColor), measureCircle.lineWidth);
            linePen.DashStyle = (DashStyle)measureCircle.lineStyle;

            g.SmoothingMode = SmoothingMode.AntiAlias;

            if (HandleCount - 1 == 2) {
                g.DrawLine(linePen, pointArray[0].X, pointArray[0].Y, pointArray[1].X, pointArray[1].Y);
            }
            
            if (HandleCount - 1 == 3)
            {
                if (drawingPropertiesList == null)
                {
                    drawingPropertiesList = drawingPropertiesListClone;
                    this.configurationFile = true;
                }
                SizeF sizeF1 = new SizeF();
                float x1 = pointArray[0].X;
                float y1 = pointArray[0].Y;
                float x2 = pointArray[1].X;
                float y2 = pointArray[1].Y;
                float x3 = pointArray[2].X;
                float y3 = pointArray[2].Y;

                double a = x1 - x2;
                double b = y1 - y2;
                double c = x1 - x3;
                double d = y1 - y3;
                double e = ((x1 * x1 - x2 * x2) + (y1 * y1 - y2 * y2)) / 2.0;
                double f = ((x1 * x1 - x3 * x3) + (y1 * y1 - y3 * y3)) / 2.0;

                 x0 = x1;
                 y0 = y1;

                double det = b * c - a * d;

                if (Math.Abs(det) > 0.001)
                {
                    //x0,y0为计算得到的原点
                    x0 = -(d * e - b * f) / det;
                    y0 = -(a * f - c * e) / det;

                    radius = Math.Round(Math.Sqrt((x1 - x0) * (x1 - x0) + (y1 - y0) * (y1 - y0)) * 2, 10);
                }
                
                linePen.StartCap = LineCap.ArrowAnchor;
                linePen.EndCap = LineCap.Round;

                rectangle.X = (float)(x0 - radius / 2);
                rectangle.Y = (float)(y0 - radius / 2);
                rectangle.Width = (float)radius;
                rectangle.Height = (float)radius;

                string circleMessage = Math.Round(Math.PI * (radius / 2) * (radius / 2) * unitLength, decimalPlaces) + unit + "²\r\n" 
                    + Math.Round(radius / 2 * unitLength, decimalPlaces) + unit + "\r\n" + Math.Round(radius * unitLength, decimalPlaces) + unit + "\r\n";//圆的信息字符串
                SizeF sizeF = g.MeasureString(circleMessage, textfont);//获取字符串对应的矩形尺寸
                RectangleF recMessage = new RectangleF();
                recMessage.Width = sizeF.Width;
                recMessage.Height = sizeF.Height;

                if (jangle == 0)
                {
                    if (arrowPosition) 
                    {
                        linePoint = new Point(Convert.ToInt32(x0 - radius / 2), Convert.ToInt32(y0));
                        messagePoint = new Point(Convert.ToInt32(x0 - radius / 4), Convert.ToInt32(y0));
                    }

                    recMessage.X = messagePoint.X;
                    recMessage.Y = messagePoint.Y;

                    g.DrawEllipse(pen, rectangle);
                    g.DrawLine(linePen, linePoint.X , linePoint.Y , Convert.ToInt32(x0), Convert.ToInt32(y0));
                    //g.DrawString(circleMessage, textfont, textbrush, recMessage);
                }
                else
                {  
                    recMessage.X = messagePoint.X;
                    recMessage.Y = messagePoint.Y;                   

                    Matrix mtxSave = g.Transform;
                    Matrix matrix = g.Transform;

                    matrix.RotateAt((float)jangle, new PointF(float.Parse(x0.ToString()), float.Parse(y0.ToString())));

                    g.Transform = matrix;

                    g.DrawEllipse(pen, rectangle);     

                    g.Transform = mtxSave;
                    matrix.Dispose();

                    g.DrawLine(linePen, linePoint.X, linePoint.Y, Convert.ToInt32(x0), Convert.ToInt32(y0));
                    //g.DrawString(circleMessage, textfont, textbrush, recMessage);
                }
                if (this.pointChange || this.SavePointChange || this.mouseUpPointChange || this.mouseUpAttribute)
                {
                    int offsetValue = measureCircle.fontSize + measureCircle.fontSize / 2;
                    int offsetValue1 = measureCircle.lineWidth * 2 / 3;
                    int offset = offsetValue1;
                    this.pointL = new Point((int)pointArray[0].X, (int)pointArray[0].Y);
                    if (drawingPropertiesList != null)
                    {
                        if (drawingPropertiesList.Contains(MeasureAttributes.PixelRadius.ToString()))
                        {
                            sizeF1 = g.MeasureString("" + Math.Round(radius / 2, decimalPlaces) + "px", textfont);
                            rectangleF12.Location = new Point((int)pointArray[0].X + offsetValue1 - (int)sizeF1.Width / 2, (int)pointArray[0].Y + offset);
                            offset += offsetValue;
                        }
                        if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalRadius.ToString()))
                        {
                            string s = Math.Round(radius / 2 * unitLength, decimalPlaces).ToString();
                            if (s.IndexOf(".") == -1)
                            {
                                for (int i = 0; i < decimalPlaces; i++)
                                {
                                    if (i == 0)
                                        s += ".";
                                    s += "0";
                                }
                            }
                            else
                            {
                                int dic = s.Length - s.IndexOf(".") - 1;
                                if (dic < decimalPlaces)
                                {
                                    for (int i = 0; i < decimalPlaces - dic; i++)
                                    {
                                        s += "0";
                                    }
                                }
                            }
                            sizeF1 = g.MeasureString(s + this.unit, textfont);
                            rectangleF13.Location = new Point((int)pointArray[0].X + offsetValue1 - (int)sizeF1.Width / 2, (int)pointArray[0].Y + offset);
                            offset += offsetValue;
                        }
                        if (drawingPropertiesList.Contains(MeasureAttributes.PixelDiameter.ToString()))
                        {
                            sizeF1 = g.MeasureString("" + Math.Round(radius, decimalPlaces) + "px", textfont);
                            rectangleF14.Location = new Point((int)pointArray[0].X + offsetValue1 - (int)sizeF1.Width / 2, (int)pointArray[0].Y + offset);
                            offset += offsetValue;
                        }
                        if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalDiameter.ToString()))
                        {
                            string s = Math.Round(radius * unitLength, decimalPlaces).ToString();
                            if (s.IndexOf(".") == -1)
                            {
                                for (int i = 0; i < decimalPlaces; i++)
                                {
                                    if (i == 0)
                                        s += ".";
                                    s += "0";
                                }
                            }
                            else
                            {
                                int dic = s.Length - s.IndexOf(".") - 1;
                                if (dic < decimalPlaces)
                                {
                                    for (int i = 0; i < decimalPlaces - dic; i++)
                                    {
                                        s += "0";
                                    }
                                }
                            }
                            sizeF1 = g.MeasureString(s + this.unit, textfont);
                            rectangleF15.Location = new Point((int)pointArray[0].X + offsetValue1 - (int)sizeF1.Width / 2, (int)pointArray[0].Y + offset);
                            offset += offsetValue;
                        }
                        if (drawingPropertiesList.Contains(MeasureAttributes.PixelCircumference.ToString()))
                        {
                            sizeF1 = g.MeasureString("" + Math.Round(Math.PI * radius, decimalPlaces) + "px", textfont);
                            rectangleF6.Location = new Point((int)pointArray[0].X + offsetValue1 - (int)sizeF1.Width / 2, (int)pointArray[0].Y + offset);
                            offset += offsetValue;
                        }
                        if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalCircumference.ToString()))
                        {
                            string s = Math.Round(Math.PI * radius * unitLength, decimalPlaces).ToString();
                            if (s.IndexOf(".") == -1)
                            {
                                for (int i = 0; i < decimalPlaces; i++)
                                {
                                    if (i == 0)
                                        s += ".";
                                    s += "0";
                                }
                            }
                            else
                            {
                                int dic = s.Length - s.IndexOf(".") - 1;
                                if (dic < decimalPlaces)
                                {
                                    for (int i = 0; i < decimalPlaces - dic; i++)
                                    {
                                        s += "0";
                                    }
                                }
                            }
                            sizeF1 = g.MeasureString(s + this.unit, textfont);
                            rectangleF7.Location = new Point((int)pointArray[0].X + offsetValue1 - (int)sizeF1.Width / 2, (int)pointArray[0].Y + offset);
                            offset += offsetValue;
                        }
                        if (drawingPropertiesList.Contains(MeasureAttributes.PixelArea.ToString()))
                        {
                            sizeF1 = g.MeasureString("" + Math.Round(Math.PI * (radius / 2) * (radius / 2), decimalPlaces) + "px²", textfont);
                            rectangleF4.Location = new Point((int)pointArray[0].X + offsetValue1 - (int)sizeF1.Width / 2, (int)pointArray[0].Y + offset);
                            offset += offsetValue;
                        }
                        if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalArea.ToString()))
                        {
                            string s = Math.Round(Math.PI * (radius / 2) * (radius / 2) * unitLength, decimalPlaces).ToString();
                            if (s.IndexOf(".") == -1)
                            {
                                for (int i = 0; i < decimalPlaces; i++)
                                {
                                    if (i == 0)
                                        s += ".";
                                    s += "0";
                                }
                            }
                            else
                            {
                                int dic = s.Length - s.IndexOf(".") - 1;
                                if (dic < decimalPlaces)
                                {
                                    for (int i = 0; i < decimalPlaces - dic; i++)
                                    {
                                        s += "0";
                                    }
                                }
                            }
                            sizeF1 = g.MeasureString(s + this.unit + "²", textfont);
                            rectangleF5.Location = new Point((int)pointArray[0].X + offsetValue1 - (int)sizeF1.Width / 2, (int)pointArray[0].Y + offset);
                            offset += offsetValue;
                        }
                        if (drawingPropertiesList.Contains(MeasureAttributes.PixelCenterX.ToString()))
                        {
                            sizeF1 = g.MeasureString("" + Math.Round(this.x0, decimalPlaces), textfont);
                            rectangleF8.Location = new Point((int)pointArray[0].X + offsetValue1 - (int)sizeF1.Width / 2, (int)pointArray[0].Y + offset);
                            offset += offsetValue;
                        }
                        if (drawingPropertiesList.Contains(MeasureAttributes.PixelCenterY.ToString()))
                        {
                            sizeF1 = g.MeasureString("" + Math.Round(this.y0, decimalPlaces), textfont);
                            rectangleF9.Location = new Point((int)pointArray[0].X + offsetValue1 - (int)sizeF1.Width / 2, (int)pointArray[0].Y + offset);
                            offset += offsetValue;
                        }
                        if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalCenterX.ToString()))
                        {
                            sizeF1 = g.MeasureString("" + Math.Round(this.x0 * unitLength, decimalPlaces), textfont);
                            rectangleF10.Location = new Point((int)pointArray[0].X + offsetValue1 - (int)sizeF1.Width / 2, (int)pointArray[0].Y + offset);
                            offset += offsetValue;
                        }
                        if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalCenterY.ToString()))
                        {
                            sizeF1 = g.MeasureString("" + Math.Round(this.y0 * unitLength, decimalPlaces), textfont);
                            rectangleF11.Location = new Point((int)pointArray[0].X + offsetValue1 - (int)sizeF1.Width / 2, (int)pointArray[0].Y + offset);
                            offset += offsetValue;
                        }
                        if (drawingPropertiesList.Contains(MeasureAttributes.MeasureMethod.ToString()))
                        {
                            sizeF1 = g.MeasureString("" + PdnResources.GetString("Menu.MeasureAction.CircularMeasurement.Text"), textfont);
                            rectangleF1.Location = new Point((int)pointArray[0].X + offsetValue1 - (int)sizeF1.Width / 2, (int)pointArray[0].Y + offset);
                            offset += offsetValue;
                        }
                        if (drawingPropertiesList.Contains(MeasureAttributes.MeasureUnitCN.ToString()))
                        {
                            sizeF1 = g.MeasureString("" + this.unitString, textfont);
                            rectangleF2.Location = new Point((int)pointArray[0].X + offsetValue1 - (int)sizeF1.Width / 2, (int)pointArray[0].Y + offset);
                            offset += offsetValue;
                        }
                        if (drawingPropertiesList.Contains(MeasureAttributes.MeasureUnitEN.ToString()))
                        {
                            sizeF1 = g.MeasureString("" + this.unit, textfont);
                            rectangleF3.Location = new Point((int)pointArray[0].X + offsetValue1 - (int)sizeF1.Width / 2, (int)pointArray[0].Y + offset);
                            offset += offsetValue;
                        }
                    }
                }
                if (drawingPropertiesList != null)
                {
                    if (drawingPropertiesList.Contains(MeasureAttributes.MeasureMethod.ToString()))
                    {
                        sizeF1 = g.MeasureString("" + PdnResources.GetString("Menu.MeasureAction.CircularMeasurement.Text"), textfont);
                        rectangleF1.Width = sizeF1.Width;
                        rectangleF1.Height = sizeF1.Height;
                        g.DrawString("" + PdnResources.GetString("Menu.MeasureAction.CircularMeasurement.Text"), textfont, textbrush, rectangleF1);
                    }
                    else
                    {
                        rectangleF1 = new RectangleF();
                    }
                    if (drawingPropertiesList.Contains(MeasureAttributes.MeasureUnitCN.ToString()))
                    {
                        sizeF1 = g.MeasureString("" + this.unitString, textfont);
                        rectangleF2.Width = sizeF1.Width;
                        rectangleF2.Height = sizeF1.Height;
                        g.DrawString("" + this.unitString, textfont, textbrush, rectangleF2);
                    }
                    else
                    {
                        rectangleF2 = new RectangleF();
                    }
                    if (drawingPropertiesList.Contains(MeasureAttributes.MeasureUnitEN.ToString()))
                    {
                        sizeF1 = g.MeasureString("" + this.unit, textfont);
                        rectangleF3.Width = sizeF1.Width;
                        rectangleF3.Height = sizeF1.Height;
                        g.DrawString("" + this.unit, textfont, textbrush, rectangleF3);
                    }
                    else
                    {
                        rectangleF3 = new RectangleF();
                    }
                    if (drawingPropertiesList.Contains(MeasureAttributes.PixelArea.ToString()))
                    {
                        sizeF1 = g.MeasureString("" + Math.Round(Math.PI * (radius / 2) * (radius / 2), decimalPlaces) + "px²", textfont);
                        rectangleF4.Width = sizeF1.Width;
                        rectangleF4.Height = sizeF1.Height;
                        g.DrawString("" + Math.Round(Math.PI * (radius / 2) * (radius / 2), decimalPlaces) + "px²", textfont, textbrush, rectangleF4);
                    }
                    else
                    {
                        rectangleF4 = new RectangleF();
                    }
                    if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalArea.ToString()))
                    {
                        string s = Math.Round(Math.PI * (radius / 2) * (radius / 2) * unitLength, decimalPlaces).ToString();
                        if (s.IndexOf(".") == -1)
                        {
                            for (int i = 0; i < decimalPlaces; i++)
                            {
                                if (i == 0)
                                    s += ".";
                                s += "0";
                            }
                        }
                        else
                        {
                            int dic = s.Length - s.IndexOf(".") - 1;
                            if (dic < decimalPlaces)
                            {
                                for (int i = 0; i < decimalPlaces - dic; i++)
                                {
                                    s += "0";
                                }
                            }
                        }
                        sizeF1 = g.MeasureString(s + this.unit + "²", textfont);
                        rectangleF5.Width = sizeF1.Width;
                        rectangleF5.Height = sizeF1.Height;
                        g.DrawString(s + this.unit + "²", textfont, textbrush, rectangleF5);
                    }
                    else
                    {
                        rectangleF5 = new RectangleF();
                    }
                    if (drawingPropertiesList.Contains(MeasureAttributes.PixelCircumference.ToString()))
                    {
                        sizeF1 = g.MeasureString("" + Math.Round(Math.PI * radius, decimalPlaces) + "px", textfont);
                        rectangleF6.Width = sizeF1.Width;
                        rectangleF6.Height = sizeF1.Height;
                        g.DrawString("" + Math.Round(Math.PI * radius, decimalPlaces) + "px", textfont, textbrush, rectangleF6);
                    }
                    else
                    {
                        rectangleF6 = new RectangleF();
                    }
                    if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalCircumference.ToString()))
                    {
                        string s = Math.Round(Math.PI * radius * unitLength, decimalPlaces).ToString();
                        if (s.IndexOf(".") == -1)
                        {
                            for (int i = 0; i < decimalPlaces; i++)
                            {
                                if (i == 0)
                                    s += ".";
                                s += "0";
                            }
                        }
                        else
                        {
                            int dic = s.Length - s.IndexOf(".") - 1;
                            if (dic < decimalPlaces)
                            {
                                for (int i = 0; i < decimalPlaces - dic; i++)
                                {
                                    s += "0";
                                }
                            }
                        }
                        sizeF1 = g.MeasureString(s + this.unit, textfont);
                        rectangleF7.Width = sizeF1.Width;
                        rectangleF7.Height = sizeF1.Height;
                        g.DrawString(s + this.unit, textfont, textbrush, rectangleF7);
                    }
                    else
                    {
                        rectangleF7 = new RectangleF();
                    }
                    if (drawingPropertiesList.Contains(MeasureAttributes.PixelCenterX.ToString()))
                    {
                        sizeF1 = g.MeasureString("" + Math.Round(this.x0, decimalPlaces), textfont);
                        rectangleF8.Width = sizeF1.Width;
                        rectangleF8.Height = sizeF1.Height;
                        g.DrawString("" + Math.Round(this.x0, decimalPlaces), textfont, textbrush, rectangleF8);
                    }
                    else
                    {
                        rectangleF8 = new RectangleF();
                    }
                    if (drawingPropertiesList.Contains(MeasureAttributes.PixelCenterY.ToString()))
                    {
                        sizeF1 = g.MeasureString("" + Math.Round(this.y0, decimalPlaces), textfont);
                        rectangleF9.Width = sizeF1.Width;
                        rectangleF9.Height = sizeF1.Height;
                        g.DrawString("" + Math.Round(this.y0, decimalPlaces), textfont, textbrush, rectangleF9);
                    }
                    else
                    {
                        rectangleF9 = new RectangleF();
                    }
                    if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalCenterX.ToString()))
                    {
                        sizeF1 = g.MeasureString("" + Math.Round(this.x0 * unitLength, decimalPlaces), textfont);
                        rectangleF10.Width = sizeF1.Width;
                        rectangleF10.Height = sizeF1.Height;
                        g.DrawString("" + Math.Round(this.x0 * unitLength, decimalPlaces), textfont, textbrush, rectangleF10);
                    }
                    else
                    {
                        rectangleF10 = new RectangleF();
                    }
                    if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalCenterY.ToString()))
                    {
                        sizeF1 = g.MeasureString("" + Math.Round(this.y0 * unitLength, decimalPlaces), textfont);
                        rectangleF11.Width = sizeF1.Width;
                        rectangleF11.Height = sizeF1.Height;
                        g.DrawString("" + Math.Round(this.y0 * unitLength, decimalPlaces), textfont, textbrush, rectangleF11);
                    }
                    else
                    {
                        rectangleF11 = new RectangleF();
                    }
                    if (drawingPropertiesList.Contains(MeasureAttributes.PixelRadius.ToString()))
                    {
                        sizeF1 = g.MeasureString("" + Math.Round(radius / 2, decimalPlaces) + "px", textfont);
                        rectangleF12.Width = sizeF1.Width;
                        rectangleF12.Height = sizeF1.Height;
                        g.DrawString("" + Math.Round(radius / 2, decimalPlaces) + "px", textfont, textbrush, rectangleF12);
                    }
                    else
                    {
                        rectangleF12 = new RectangleF();
                    }
                    if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalRadius.ToString()))
                    {
                        string s = Math.Round(radius / 2 * unitLength, decimalPlaces).ToString();
                        if (s.IndexOf(".") == -1)
                        {
                            for (int i = 0; i < decimalPlaces; i++)
                            {
                                if (i == 0)
                                    s += ".";
                                s += "0";
                            }
                        }
                        else
                        {
                            int dic = s.Length - s.IndexOf(".") - 1;
                            if (dic < decimalPlaces)
                            {
                                for (int i = 0; i < decimalPlaces - dic; i++)
                                {
                                    s += "0";
                                }
                            }
                        }
                        sizeF1 = g.MeasureString(s + this.unit, textfont);
                        rectangleF13.Width = sizeF1.Width;
                        rectangleF13.Height = sizeF1.Height;
                        g.DrawString(s + this.unit, textfont, textbrush, rectangleF13);
                    }
                    else
                    {
                        rectangleF13 = new RectangleF();
                    }
                    if (drawingPropertiesList.Contains(MeasureAttributes.PixelDiameter.ToString()))
                    {
                        sizeF1 = g.MeasureString("" + Math.Round(radius, decimalPlaces) + "px", textfont);
                        rectangleF14.Width = sizeF1.Width;
                        rectangleF14.Height = sizeF1.Height;
                        g.DrawString("" + Math.Round(radius, decimalPlaces) + "px", textfont, textbrush, rectangleF14);
                    }
                    else
                    {
                        rectangleF14 = new RectangleF();
                    }
                    if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalDiameter.ToString()))
                    {
                        string s = Math.Round(radius * unitLength, decimalPlaces).ToString();
                        if (s.IndexOf(".") == -1)
                        {
                            for (int i = 0; i < decimalPlaces; i++)
                            {
                                if (i == 0)
                                    s += ".";
                                s += "0";
                            }
                        }
                        else
                        {
                            int dic = s.Length - s.IndexOf(".") - 1;
                            if (dic < decimalPlaces)
                            {
                                for (int i = 0; i < decimalPlaces - dic; i++)
                                {
                                    s += "0";
                                }
                            }
                        }
                        sizeF1 = g.MeasureString(s + this.unit, textfont);
                        rectangleF15.Width = sizeF1.Width;
                        rectangleF15.Height = sizeF1.Height;
                        g.DrawString(s + this.unit, textfont, textbrush, rectangleF15);
                    }
                    else
                    {
                        rectangleF15 = new RectangleF();
                    }
                }
            }
            pen.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)
        {
            float x = 0;
            float y = 0;

            switch (handleNumber)
            {
                case 1:
                    x = pointArray[0].X;
                    y = pointArray[0].Y;
                    break;
                case 2:
                    x = pointArray[1].X;
                    y = pointArray[1].Y;
                    break;
                case 3:
                    x = pointArray[2].X;
                    y = pointArray[2].Y;
                    break;
                case 4:
                    x = rectangle.X;
                    y = rectangle.Y;
                    break;
                case 5:
                    x = rectangle.Right;
                    y = rectangle.Y;
                    break;
                case 6:
                    x = rectangle.Right;
                    y = rectangle.Bottom;
                    break;
                case 7:
                    x = rectangle.X;
                    y = rectangle.Bottom;
                    break;
                case 8:
                    x = linePoint.X;
                    y = linePoint.Y;
                    break;
                case 9:
                    x = this.pointL.X;
                    y = this.pointL.Y;
                    break;
            }

            return new PointF(x, y);
        }

        /// <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 <= 8; i++)
                {
                    if (GetHandleRectangle(i).Contains(point))
                        return i;
                }
                if (this.rectangleF1.Contains(point))
                {
                    this.pointL = point;
                    moveKb = 1;
                    return 9;
                }
                else if (this.rectangleF2.Contains(point))
                {
                    this.pointL = point;
                    moveKb = 2;
                    return 9;
                }
                else if (this.rectangleF3.Contains(point))
                {
                    this.pointL = point;
                    moveKb = 3;
                    return 9;
                }
                else if (this.rectangleF4.Contains(point))
                {
                    this.pointL = point;
                    moveKb = 4;
                    return 9;
                }
                else if (this.rectangleF5.Contains(point))
                {
                    this.pointL = point;
                    moveKb = 5;
                    return 9;
                }
                else if (this.rectangleF6.Contains(point))
                {
                    this.pointL = point;
                    moveKb = 6;
                    return 9;
                }
                else if (this.rectangleF7.Contains(point))
                {
                    this.pointL = point;
                    moveKb = 7;
                    return 9;
                }
                else if (this.rectangleF8.Contains(point))
                {
                    this.pointL = point;
                    moveKb = 8;
                    return 9;
                }
                else if (this.rectangleF9.Contains(point))
                {
                    this.pointL = point;
                    moveKb = 9;
                    return 9;
                }
                else if (this.rectangleF10.Contains(point))
                {
                    this.pointL = point;
                    moveKb = 10;
                    return 9;
                }
                else if (this.rectangleF11.Contains(point))
                {
                    this.pointL = point;
                    moveKb = 11;
                    return 9;
                }
                else if (this.rectangleF12.Contains(point))
                {
                    this.pointL = point;
                    moveKb = 12;
                    return 9;
                }
                else if (this.rectangleF13.Contains(point))
                {
                    this.pointL = point;
                    moveKb = 13;
                    return 9;
                }
                else if (this.rectangleF14.Contains(point))
                {
                    this.pointL = point;
                    moveKb = 14;
                    return 9;
                }
                else if (this.rectangleF15.Contains(point))
                {
                    this.pointL = point;
                    moveKb = 15;
                    return 9;
                }
            }
                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);
        }
        protected virtual void CreateObjects()
        {
            if (AreaPath != null)
                return;

            AreaPath = new GraphicsPath();
            AreaPath.AddRectangle(GetBoundingBox());
            AreaPath.CloseFigure();
            AreaRegion = new Region(AreaPath);
        }
        protected GraphicsPath AreaPath
        {
            get
            {
                return areaPath;
            }
            set
            {
                areaPath = value;
            }
        }
        protected Region AreaRegion
        {
            get
            {
                return areaRegion;
            }
            set
            {
                areaRegion = value;
            }
        }
        protected Pen AreaPen
        {
            get
            {
                return areaPen;
            }
            set
            {
                areaPen = value;
            }
        }
        public override Cursor GetHandleCursor(int handleNumber)
        {
            return handleCursor;
        }

        public override void MoveHandleTo(Point point, int handleNumber)
        {
            if(handleNumber<4)
            {
                this.mouseUpPointChange = true;
                if (handleNumber == 1)
                {
                    this.rectangleF1.Offset(point.X - this.pointArray[0].X, point.Y - this.pointArray[0].Y);
                    this.rectangleF2.Offset(point.X - this.pointArray[0].X, point.Y - this.pointArray[0].Y);
                    this.rectangleF3.Offset(point.X - this.pointArray[0].X, point.Y - this.pointArray[0].Y);
                    this.rectangleF4.Offset(point.X - this.pointArray[0].X, point.Y - this.pointArray[0].Y);
                    this.rectangleF5.Offset(point.X - this.pointArray[0].X, point.Y - this.pointArray[0].Y);
                    this.rectangleF6.Offset(point.X - this.pointArray[0].X, point.Y - this.pointArray[0].Y);
                    this.rectangleF7.Offset(point.X - this.pointArray[0].X, point.Y - this.pointArray[0].Y);
                    this.rectangleF8.Offset(point.X - this.pointArray[0].X, point.Y - this.pointArray[0].Y);
                    this.rectangleF9.Offset(point.X - this.pointArray[0].X, point.Y - this.pointArray[0].Y);
                    this.rectangleF10.Offset(point.X - this.pointArray[0].X, point.Y - this.pointArray[0].Y);
                    this.rectangleF11.Offset(point.X - this.pointArray[0].X, point.Y - this.pointArray[0].Y);
                    this.rectangleF12.Offset(point.X - this.pointArray[0].X, point.Y - this.pointArray[0].Y);
                    this.rectangleF13.Offset(point.X - this.pointArray[0].X, point.Y - this.pointArray[0].Y);
                    this.rectangleF14.Offset(point.X - this.pointArray[0].X, point.Y - this.pointArray[0].Y);
                    this.rectangleF15.Offset(point.X - this.pointArray[0].X, point.Y - this.pointArray[0].Y);
                }
                pointArray[handleNumber - 1] = point;
                linePoint = new PointF((float)(x0 - radius / 2), (float)y0);
                messagePoint = new PointF((float)(x0 - radius / 4), (float)(y0));
            }
            else if (handleNumber == 8)
            {
                this.mouseUpPointChange = true;
                arrowAngle = BasicCalculationHelper.CalculateAngle(x0, y0, linePoint.X, linePoint.Y, point.X, point.Y);
                linePoint =  BasicCalculationHelper.GetAnglePoint(linePoint, new PointF((float)(x0), (float)(y0)), arrowAngle);
                messagePoint = BasicCalculationHelper.GetAnglePoint(messagePoint, new PointF((float)(x0), (float)(y0)), arrowAngle);
            }
            else if(handleNumber == 9)
            {
                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);
                else if (this.moveKb == 11)
                    this.rectangleF11.Offset(point.X - this.pointL.X, point.Y - this.pointL.Y);
                else if (this.moveKb == 12)
                    this.rectangleF12.Offset(point.X - this.pointL.X, point.Y - this.pointL.Y);
                else if (this.moveKb == 13)
                    this.rectangleF13.Offset(point.X - this.pointL.X, point.Y - this.pointL.Y);
                else if (this.moveKb == 14)
                    this.rectangleF14.Offset(point.X - this.pointL.X, point.Y - this.pointL.Y);
                else if (this.moveKb == 15)
                    this.rectangleF15.Offset(point.X - this.pointL.X, point.Y - this.pointL.Y);
                this.pointL = point;
            }
            else
            {
                this.mouseUpPointChange = true;
                float x=0, y=0;
                switch(handleNumber)
                {
                    case 4:
                        x = rectangle.X;
                        y = rectangle.Y;
                        break;
                    case 5:
                        x = rectangle.Right;
                        y = rectangle.Y;
                        break;
                    case 6:
                        x = rectangle.Right;
                        y = rectangle.Bottom;
                        break;
                    case 7:
                        x = rectangle.X;
                        y = rectangle.Bottom;
                        break;
                } 
                
                if (!this.isPress)
                {
                    this.isPress = true;
                    lastPoint = new PointF(x, y);
                    jangle = 0;
                }
                
                angle = BasicCalculationHelper.CalculateAngle(x0, y0, lastPoint.X, lastPoint.Y, point.X, point.Y);
                jangle += angle;
                lastPoint = point;

                for (int l = 0; l < pointArray.Count; l++)
                {
                    pointArray[l] = BasicCalculationHelper.GetAnglePoint(pointArray[l], new Point(Convert.ToInt32(x0), Convert.ToInt32(y0)), angle);
                }
                linePoint = BasicCalculationHelper.GetAnglePoint(linePoint, new Point(Convert.ToInt32(x0), Convert.ToInt32(y0)), angle);
                messagePoint = BasicCalculationHelper.GetAnglePoint(messagePoint, new Point(Convert.ToInt32(x0), Convert.ToInt32(y0)), angle);
            }
            //Invalidate();
        }

        public override void Move(int deltaX, int deltaY)
        {
            for (int i = 0; i < pointArray.Count; i++)
            {
                pointArray[i] = new PointF(pointArray[i].X + ISurfaceBox.UnscaleScalar(deltaX), pointArray[i].Y + ISurfaceBox.UnscaleScalar(deltaY));
            }
            linePoint.X += ISurfaceBox.UnscaleScalar(deltaX);
            linePoint.Y += ISurfaceBox.UnscaleScalar(deltaY);
            messagePoint.X += ISurfaceBox.UnscaleScalar(deltaX);
            messagePoint.Y += ISurfaceBox.UnscaleScalar(deltaY);
            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);
            this.rectangleF11.Offset(x, y);
            this.rectangleF12.Offset(x, y);
            this.rectangleF13.Offset(x, y);
            this.rectangleF14.Offset(x, y);
            this.rectangleF15.Offset(x, y);
            Invalidate();
        }
        /// <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;
            }
        }
        /// <summary>
        /// Normalize rectangle
        /// </summary>
        public override void Normalize()
        {
            this.isPress = false;
            rectangle = Annotation.DrawObject.GetNormalizedRectangle(rectangle);
        }

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

            return rectangle;
        }

        internal void setNextPoint(Point p)
        {
            AddPoint(p);
        }

        public override void DrawTracker(Graphics g)
        {
            if (!Selected)
                return;

           if (pointArray.Count >= 3)
            {
                SolidBrush brush = new SolidBrush(Color.Black);
                for (int i = 1; i <= 8; i++)
                {
                    if (i == 1) brush = new SolidBrush(Color.Green);
                    else if (i == 2) brush = new SolidBrush(Color.Blue);
                    else if (i == 3) brush = new SolidBrush(Color.Yellow);
                    else if (i == 8) brush = new SolidBrush(Color.White);
                    else if (i == 9) brush = new SolidBrush(Color.Transparent);
                    else brush = new SolidBrush(Color.Black);
                    g.FillRectangle(brush, GetHandleRectangle(i));
                }
                brush.Dispose();

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

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

        public override ParentStyleModel GetStyle()
        {
            return measureCircle;
        }
    }
}