LIBMAS/Annotation/Measure/MeasureFourPointAngle.cs

using PaintDotNet.Annotation.Enum;
using PaintDotNet.Base.SettingModel;

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

namespace PaintDotNet.Annotation.Measure
{
    using PointList = List<PointF>;

    /// <summary>
    /// 测量->角度->四点角度
    /// </summary>
    public class MeasureFourPointAngle : MeasureDrawObject
    {
        /// <summary>
        /// 坐标点
        /// </summary>
        public PointList pointArray;
        /// <summary>
        /// 角度
        /// </summary>
        private double fourPointAngle = 0.0;
        /// <summary>
        /// 测量样式信息model
        /// </summary>
        private MeasureStyleModel.MeasureFourPointAngle measureStyleModel;
        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();
        /// <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>
        /// 旋转角度
        /// </summary>
        private double angleClass;
        /// <summary>
        /// 限制绘制(绘制中)
        /// </summary>
        public bool mouseUpPointChange = false;
        public MeasureStyleModel.MeasureFourPointAngle MeasureStyleModel
        {
            set
            {
                this.measureStyleModel = value;
            }
        }

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

            measureStyleModel = surfaceBox.GetMeasureStyleModel().measureFourPointAngle;
            pointArray = new PointList();
            if (clone)
                pointArray.Add(new Point(x1, y1));
            startPoint = new PointF(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 MeasureFourPointAngle(ISurfaceBox surfaceBox, List<PointF> points, ParentStyleModel parentStyleModel, Object content) : base()
        {
            this.objectType = DrawClass.Measure;
            this.drawToolType = DrawToolType.MeasureFourPointAngle;
            this.ISurfaceBox = surfaceBox;
            measureStyleModel = (MeasureStyleModel.MeasureFourPointAngle)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()
        {
            MeasureFourPointAngle measureFourPointAngle = new MeasureFourPointAngle(ISurfaceBox, (int)pointArray[0].X, (int)pointArray[0].Y, false);
            measureFourPointAngle.objectType = DrawClass.Measure;
            measureFourPointAngle.drawToolType = DrawToolType.MeasureFourPointAngle;
            measureFourPointAngle.ISurfaceBox = ISurfaceBox;
            foreach (PointF p in this.pointArray)
            {
                measureFourPointAngle.pointArray.Add(p);
            }
            if (drawingPropertiesList != null)
                measureFourPointAngle.drawingPropertiesListClone = drawingPropertiesList;
            FillDrawObjectFields(measureFourPointAngle);
            return measureFourPointAngle;
        }

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

        /// <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.AngleMeasurement.Text");
            else
                data.Add(MeasureAttributes.MeasureMethod, PdnResources.GetString("Menu.MeasureAction.AngleMeasurement.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 (measureStyleModel.isAngle)
            {
                if (data.ContainsKey(MeasureAttributes.MeasureUnitCN))
                    data[MeasureAttributes.MeasureUnitCN] = "密位";
                else
                    data.Add(MeasureAttributes.MeasureUnitCN, "密位");
            }
            else
            {
                if (data.ContainsKey(MeasureAttributes.MeasureUnitCN))
                    data[MeasureAttributes.MeasureUnitCN] = "度";
                else
                    data.Add(MeasureAttributes.MeasureUnitCN, "度");
            }

            if (measureStyleModel.isAngle)
            {
                if (data.ContainsKey(MeasureAttributes.MeasureUnitEN))
                    data[MeasureAttributes.MeasureUnitEN] = this.unitMil;
                else
                    data.Add(MeasureAttributes.MeasureUnitEN, this.unitMil);
            }
            else
            {
                if (data.ContainsKey(MeasureAttributes.MeasureUnitEN))
                    data[MeasureAttributes.MeasureUnitEN] = this.unitAngle;
                else
                    data.Add(MeasureAttributes.MeasureUnitEN, this.unitAngle);
            }

            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));

            double thisNum;
            if (measureStyleModel.isAngle)
            {
                thisNum = (this.fourPointAngle * 6000) / 360;
            }
            else
            {
                thisNum = this.fourPointAngle;
            }

            string s = Math.Round(thisNum, 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.Angle))
                data[MeasureAttributes.Angle] = s;
            else
                data.Add(MeasureAttributes.Angle, s);

            return data;
        }
        
        public override void Draw(Graphics g)
        {
            drawingProperties.TryGetValue(this.drawToolType, out drawingPropertiesList);
            pointChangeObject.TryGetValue(this.drawToolType, out SavePointChange);
            Font textfont = new Font(measureStyleModel.font, measureStyleModel.fontSize);
            Brush textbrush = new SolidBrush(Color.FromArgb(measureStyleModel.textColor));
            g.SmoothingMode = SmoothingMode.AntiAlias;

            Color color = Color.FromArgb(this.measureStyleModel.lineColor);
            Pen pen = new Pen(color, this.measureStyleModel.lineWidth);
            //Pen pen = new Pen(color, 1);
            pen.DashStyle = (DashStyle)this.measureStyleModel.lineStyle;
            pen.EndCap = LineCap.ArrowAnchor;
            Matrix mtxSave = g.Transform;
            Matrix matrix = g.Transform;
            //AdjustableArrowCap adjustableArrowCap = new AdjustableArrowCap(3, 3, true);
            //pen.CustomEndCap = adjustableArrowCap;

            if (HandleCount - 1 > 1 )
            {
                g.DrawLine(pen, pointArray[0].X, pointArray[0].Y, pointArray[1].X, pointArray[1].Y);
            }
            if (HandleCount - 1 == 3)
            {
                pen.DashStyle = DashStyle.Dot;
                pen.EndCap = LineCap.Flat;
                g.DrawLine(pen, pointArray[1].X, pointArray[1].Y, pointArray[2].X, pointArray[2].Y);
            }

            if (HandleCount - 1 == 4)
            {
                if (drawingPropertiesList == null)
                {
                    drawingPropertiesList = drawingPropertiesListClone;
                    this.configurationFile = true;
                }
                SizeF sizeF = new SizeF();
              
                //算外圈的矩形尺寸
                float[] pointX = new float[] { pointArray[0].X, pointArray[1].X, pointArray[2].X, pointArray[3].X };
                rectangle.X = pointX.Min();
                float[] pointY = new float[] { pointArray[0].Y, pointArray[1].Y, pointArray[2].Y, pointArray[3].Y };
                rectangle.Y = pointY.Min();
                rectangle.Width = Math.Abs(pointX.Max() - pointX.Min());
                rectangle.Height = Math.Abs(pointY.Max() - pointY.Min());

                //定义两个向量
                PointF quantityA = new PointF(pointArray[1].X - pointArray[0].X, pointArray[1].Y - pointArray[0].Y);
                PointF quantityB = new PointF(pointArray[3].X - pointArray[2].X, pointArray[3].Y - pointArray[2].Y);

                //两向量夹角
                fourPointAngle = Math.Acos((quantityA.X * quantityB.X + quantityA.Y * quantityB.Y) / (Math.Sqrt(quantityA.X * quantityA.X + quantityA.Y *
                    quantityA.Y) * Math.Sqrt(quantityB.X * quantityB.X + quantityB.Y * quantityB.Y))) * 180.0F / (double)Math.PI;   
                
                g.DrawLine(pen, pointArray[2].X, pointArray[2].Y, pointArray[3].X, pointArray[3].Y);
                //g.DrawString(Math.Round(fourPointAngle,decimalPlaces) + unitAngle, textfont, textbrush, (pointArray[0].X + pointArray[1].X) / 2, (pointArray[0].Y + pointArray[1].Y) / 2);
                //计算需要旋转的角度
                this.angleClass = BasicCalculationHelper.Angle(pointArray[0], pointArray[1], new PointF(pointArray[0].X, pointArray[1].Y));
                // 画布旋转
                if (this.angleClass < 90)
                {
                    matrix.RotateAt((float)this.angleClass, pointArray[0]);
                    g.Transform = matrix;
                }
                else
                {
                    this.angleClass = BasicCalculationHelper.Angle(pointArray[1], pointArray[0], new PointF(pointArray[1].X, pointArray[0].Y));
                    matrix.RotateAt((float)this.angleClass, this.pointArray[0]);
                    g.Transform = matrix;
                }
                // 是否绘制
                if (this.pointChange || this.SavePointChange || this.mouseUpPointChange || this.mouseUpAttribute)
                {
                    // 属性文本的间隔定义
                    int offsetValue = measureStyleModel.fontSize + measureStyleModel.fontSize / 2;
                    int offsetValue1 = measureStyleModel.lineWidth * 2 / 3 + measureStyleModel.fontSize;
                    int offset = offsetValue1;
                    this.pointL = new Point((int)pointArray[3].X, (int)pointArray[3].Y);
                    if (drawingPropertiesList != null)
                    {
                        // 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)pointArray[0].X + offsetValue1 - (int)sizeF.Width / 2, (int)pointArray[0].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)pointArray[0].X + offsetValue1 - (int)sizeF.Width / 2, (int)pointArray[0].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)pointArray[0].X + offsetValue1 - (int)sizeF.Width / 2, (int)pointArray[0].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)pointArray[0].X + offsetValue1 - (int)sizeF.Width / 2, (int)pointArray[0].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)pointArray[0].X + offsetValue1 - (int)sizeF.Width / 2, (int)pointArray[0].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)pointArray[0].X + offsetValue1 - (int)sizeF.Width / 2, (int)pointArray[0].Y - offset);
                            offset += offsetValue;
                        }
                        // 测量方式
                        if (drawingPropertiesList.Contains(MeasureAttributes.MeasureMethod.ToString()))
                        {
                            sizeF = g.MeasureString("" + PdnResources.GetString("Menu.MeasureAction.AngleMeasurement.Text"), textfont);
                            rectangleF1.Location = new Point((int)pointArray[0].X + offsetValue1 - (int)sizeF.Width / 2, (int)pointArray[0].Y - offset);
                            offset += offsetValue;
                        }
                        // 角度
                        if (drawingPropertiesList.Contains(MeasureAttributes.Angle.ToString()))
                        {
                            double thisNum;
                            if (measureStyleModel.isAngle)
                            {
                                thisNum = (this.fourPointAngle * 6000) / 360;
                            }
                            else
                            {
                                thisNum = this.fourPointAngle;
                            }

                            string s = Math.Round(thisNum, 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 (measureStyleModel.isAngle)
                            {
                                sizeF = g.MeasureString(s + unitMil, textfont);
                            }
                            else
                            {
                                sizeF = g.MeasureString(s + unitAngle, textfont);
                            }
                            rectangleF8.Location = new Point((int)pointArray[0].X + offsetValue1 - (int)sizeF.Width / 2, (int)pointArray[0].Y - offset);
                            offset += offsetValue;
                        }
                    }
                }
                if (drawingPropertiesList != null)
                {
                    // 测量方式
                    if (drawingPropertiesList.Contains(MeasureAttributes.MeasureMethod.ToString()))
                    {
                        sizeF = g.MeasureString("" + PdnResources.GetString("Menu.MeasureAction.AngleMeasurement.Text"), textfont);
                        rectangleF1.Width = sizeF.Width;
                        rectangleF1.Height = sizeF.Height;
                        g.DrawString("" + PdnResources.GetString("Menu.MeasureAction.AngleMeasurement.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();
                    }
                    // 测量方式(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();
                    }
                    // 角度
                    if (drawingPropertiesList.Contains(MeasureAttributes.Angle.ToString()))
                    {
                        double thisNum;
                        if (measureStyleModel.isAngle)
                        {
                            thisNum = (this.fourPointAngle * 6000) / 360;
                        }
                        else
                        {
                            thisNum = this.fourPointAngle;
                        }

                        string s = Math.Round(thisNum, 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 (measureStyleModel.isAngle)
                        {
                            sizeF = g.MeasureString(s + unitMil, textfont);
                        }
                        else
                        {
                            sizeF = g.MeasureString(s + unitAngle, textfont);
                        }

                        rectangleF8.Width = sizeF.Width;
                        rectangleF8.Height = sizeF.Height;

                        if (measureStyleModel.isAngle)
                        {
                            g.DrawString(s + unitMil, textfont, textbrush, rectangleF8);
                        }
                        else
                        {
                            g.DrawString(s + unitAngle, textfont, textbrush, rectangleF8);
                        }
                    }
                    else
                    {
                        rectangleF8 = new RectangleF();
                    }
                }
                //还原为原始旋转矩阵
                g.Transform = mtxSave;
            }
            matrix.Dispose();
            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)
        {
            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 < 5)
            {
                this.mouseUpPointChange = true;
                pointArray[handleNumber - 1] = point;
            }
            else
            {
                point = SetOffsetAfterRotation(point, pointArray[0], angleClass);
                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);
                this.pointL = 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);
            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>
        /// 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, pointArray[0], angleClass))
                {
                    this.pointL = SetOffsetAfterRotation(point, pointArray[0], angleClass);
                    moveKb = 1;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF2, point, pointArray[0], angleClass))
                {
                    this.pointL = SetOffsetAfterRotation(point, pointArray[0], angleClass);
                    moveKb = 2;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF3, point, pointArray[0], angleClass))
                {
                    this.pointL = SetOffsetAfterRotation(point, pointArray[0], angleClass);
                    moveKb = 3;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF4, point, pointArray[0], angleClass))
                {
                    this.pointL = SetOffsetAfterRotation(point, pointArray[0], angleClass);
                    moveKb = 4;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF5, point, pointArray[0], angleClass))
                {
                    this.pointL = SetOffsetAfterRotation(point, pointArray[0], angleClass);
                    moveKb = 5;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF6, point, pointArray[0], angleClass))
                {
                    this.pointL = SetOffsetAfterRotation(point, pointArray[0], angleClass);
                    moveKb = 6;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF7, point, pointArray[0], angleClass))
                {
                    this.pointL = SetOffsetAfterRotation(point, pointArray[0], angleClass);
                    moveKb = 7;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF8, point, pointArray[0], angleClass))
                {
                    this.pointL = SetOffsetAfterRotation(point, pointArray[0], angleClass);
                    moveKb = 8;
                    return this.pointArray.Count + 1;
                }
            }

            if (PointInObject(point))
                return 0;

            return -1;
        }

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

            return rectangle.Contains(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 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 List<PointF> GetPoints()
        {
            return pointArray;
        }

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