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 PaintDotNet.Annotation.Measure;
using System.Linq;

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

    /// <summary>
    /// 测量->角度->三点角度
    /// </summary>
    public class MeasureThreePointAngle : MeasureDrawObject
    {
        public PointList pointArray;

        /// <summary>
        ///  Graphic objects for hit test
        /// </summary>
        private GraphicsPath areaPath = null;
        private Pen areaPen = null;
        private Region areaRegion = null;
        /// <summary>
        /// 角度
        /// </summary>
        private double threePointAngle = 0.0;
        /// <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;
        /// <summary>
        /// 测量样式信息model
        /// </summary>
        private MeasureStyleModel.MeasureThreePointAngle measureStyleModel;

        public MeasureStyleModel.MeasureThreePointAngle MeasureStyleModel
        {
            set
            {
                this.measureStyleModel = value;
            }
        }

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

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

        public MeasureThreePointAngle(ISurfaceBox surfaceBox, List<PointF> points, ParentStyleModel parentStyleModel, Object content) : base()
        {
            this.objectType = DrawClass.Measure;
            this.drawToolType = DrawToolType.MeasureThreePointAngle;
            this.ISurfaceBox = surfaceBox;
            measureStyleModel = (MeasureStyleModel.MeasureThreePointAngle)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];
            
            this.configurationFile = true;
        }

        /// <summary>
        /// Clone this instance
        /// </summary>
        public override DrawObject Clone()
        {
            MeasureThreePointAngle drawPolygon = new MeasureThreePointAngle(ISurfaceBox, (int)pointArray[0].X, (int)pointArray[0].Y, false);
            drawPolygon.ISurfaceBox = ISurfaceBox;
            foreach (PointF p in this.pointArray)
            {
                drawPolygon.pointArray.Add(p);
            }
            if (drawingPropertiesList != null)
                drawPolygon.drawingPropertiesListClone = drawingPropertiesList;
            FillDrawObjectFields(drawPolygon);
            return drawPolygon;
        }

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

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

            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.threePointAngle * 6000) / 360;
            }
            else
            {
                thisNum = this.threePointAngle;
            }

            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);
            measureStyleModel = this.ISurfaceBox.GetMeasureStyleModel().measureThreePointAngle;
            string frontStr = string.Empty;

            if (this.measureStyleModel.showSuffix)
            {
                frontStr = this.measureStyleModel.suffixName;
            }

            if (this.measureStyleModel.showSerial)
            {

                #region [获取序号]

                List<DrawObject> newGraphicsList = new List<DrawObject>();

                int n = ISurfaceBox.GraphicsList.Count;

                int num = 0;

                for (int i = n - 1; i >= 0; i--)
                {
                    newGraphicsList.Add(ISurfaceBox.GraphicsList[i].Clone());
                }

                var newGraphics = newGraphicsList.Where(m => m.ID.Equals(this.ID)).FirstOrDefault();

                if (newGraphics != null)
                {
                    num = newGraphicsList.IndexOf(newGraphics) + 1;
                }

                #endregion

                frontStr = $"[{ num }]{frontStr}";
            }

            if (this.measureStyleModel.showAlias)
            {

                frontStr = this.measureStyleModel.aliasName + frontStr;
            }


            if (this.pointArray.Count >= 2)
            {
                if (drawingPropertiesList == null)
                {
                    drawingPropertiesList = drawingPropertiesListClone;
                    this.configurationFile = true;
                }
                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.DashStyle = (DashStyle)this.measureStyleModel.lineStyle;

                if (this.Selected)
                {
                    if (measureStyleModel.chooseStyle != null)
                    {
                        textfont = new Font(measureStyleModel.chooseStyle.font, measureStyleModel.chooseStyle.fontSize);
                        textbrush = new SolidBrush(Color.FromArgb(measureStyleModel.chooseStyle.textColor));
                        pen = new Pen(Color.FromArgb(measureStyleModel.chooseStyle.lineColor), measureStyleModel.chooseStyle.lineWidth);
                        pen.DashStyle = (DashStyle)measureStyleModel.chooseStyle.lineStyle;
                    }
                }

                if (!this.Selected)
                {
                    this.pointChange = true;
                    rectangleF1 = new RectangleF();
                    rectangleF2 = new RectangleF();
                    rectangleF3 = new RectangleF();
                    rectangleF4 = new RectangleF();
                    rectangleF5 = new RectangleF();
                    rectangleF6 = new RectangleF();
                    rectangleF7 = new RectangleF();
                    rectangleF8 = new RectangleF();
                }

                g.DrawLines(pen, pointArray.ToArray());
                SizeF sizeF = new SizeF();
                Matrix mtxSave = g.Transform;
                Matrix matrix = g.Transform;
                if (this.pointArray.Count == 3)
                {

                    // 判断第一个点象限
                    float x1 = pointArray[0].X - pointArray[1].X;
                    if (x1 == 0)
                        x1 = 1;
                    float y1 = pointArray[0].Y - pointArray[1].Y;
                    if (y1 == 0)
                        y1 = 1;
                    int j1 = 0;
                    if (x1 > 0 && y1 > 0)             //第4象限
                    {
                        j1 = 4;
                    }
                    else if (x1 > 0 && y1 < 0)      //第1象限
                    {
                        j1 = 1;
                    }
                    else if (x1 < 0 && y1 < 0)       //第2象限
                    {
                        j1 = 2;
                    }
                    else if (x1 < 0 && y1 > 0)          //第3象限
                    {
                        j1 = 3;
                    }

                    // 判断第三个点象限
                    float x3 = pointArray[2].X - pointArray[1].X;
                    if (x3 == 0)
                        x3 = 1;
                    float y3 = pointArray[2].Y - pointArray[1].Y;
                    if (y3 == 0)
                        y3 = 1;
                    int j3 = 0;
                    if (x3 > 0 && y3 > 0)             //第4象限
                    {
                        j3 = 4;
                    }
                    else if (x3 > 0 && y3 < 0)      //第1象限
                    {
                        j3 = 1;
                    }
                    else if (x3 < 0 && y3 < 0)       //第2象限
                    {
                        j3 = 2;
                    }
                    else if (x3 < 0 && y3 > 0)          //第3象限
                    {
                        j3 = 3;
                    }

                    threePointAngle = Math.Round(BasicCalculationHelper.AngleText(pointArray[1], pointArray[2], pointArray[0]),10);
                    double threePointAngleDraw = 0;
                    if (threePointAngle < 0.5)
                        threePointAngleDraw = 0.5;
                    else
                        threePointAngleDraw = threePointAngle;
                    // 第一个点于X轴的夹角
                    double point0ToX = Math.Round(BasicCalculationHelper.AngleText(pointArray[1], new PointF(pointArray[1].X + 10, pointArray[1].Y), pointArray[0]),10);
                    // 第三个点于X轴的夹角
                    double point2ToX = Math.Round(BasicCalculationHelper.AngleText(pointArray[1], pointArray[2], new PointF(pointArray[1].X + 10, pointArray[1].Y)),10);
                    if (point0ToX > 90)
                    {
                        point0ToX = 180 - point0ToX;
                    }
                    if (point2ToX > 90)
                    {
                        point2ToX = 180 - point2ToX;
                    }

                    if (j1 == 1 && j3 == 1)
                    {
                        if (point0ToX > point2ToX)
                        {
                            g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)(270 + (90 - point0ToX)), (float)threePointAngleDraw);
                        }
                        else
                        {
                            g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)(270 + (90 - point2ToX)), (float)threePointAngleDraw);
                        }
                    }
                    else if (j1 == 1 && j3 == 2)
                    {
                        g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)(180 + point2ToX), (float)threePointAngleDraw);
                    }
                    else if (j1 == 1 && j3 == 3)
                    {
                        if (point0ToX > point2ToX)
                        {
                            g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)(180 - point2ToX), (float)threePointAngleDraw);
                        }
                        else
                        {
                            g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)(270 + (90 - point0ToX)), (float)threePointAngleDraw);
                        }
                           
                    }
                    else if (j1 == 1 && j3 == 4)
                    {
                        g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)(270 + (90 - point0ToX)), (float)threePointAngleDraw);
                    }
                    else if (j1 == 2 && j3 == 1)
                    {
                        g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)(180 + point0ToX), (float)threePointAngleDraw);
                    }
                    else if (j1 == 2 && j3 == 2)
                    {
                        if (point0ToX > point2ToX)
                        {
                            g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)(180 + point2ToX), (float)threePointAngleDraw);
                        }
                        else
                        {
                            g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)(180 + point0ToX), (float)threePointAngleDraw);
                        }
                    }
                    else if (j1 == 2 && j3 == 3)
                    {
                        g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)(180 - point2ToX), (float)threePointAngleDraw);
                    }
                    else if (j1 == 2 && j3 == 4)
                    {
                        if (point0ToX > point2ToX)
                        {
                            g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)(180 + point0ToX), (float)threePointAngleDraw);
                        }
                        else
                        {
                            g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)point2ToX, (float)threePointAngleDraw);
                        }
                            
                    }
                    else if (j1 == 3 && j3 == 1)
                    {
                        if (point0ToX > point2ToX)
                        {
                            g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)(270 + (90 - point2ToX)), (float)threePointAngleDraw);
                        }
                        else
                        {
                            g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)(180 - point0ToX), (float)threePointAngleDraw);
                        }
                    }
                    else if (j1 == 3 && j3 == 2)
                    {
                        g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)(180 - point0ToX), (float)threePointAngleDraw);
                    }
                    else if (j1 == 3 && j3 == 3)
                    {
                        if (point0ToX > point2ToX)
                        {
                            g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)(180 - point0ToX), (float)threePointAngleDraw);
                        }
                        else
                        {
                            g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)(180 - point2ToX), (float)threePointAngleDraw);
                        }
                    }
                    else if (j1 == 3 && j3 == 4)
                    {
                        g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)point2ToX, (float)threePointAngleDraw);
                    }
                    else if (j1 == 4 && j3 == 1)
                    {
                        g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)(270 + (90 - point2ToX)), (float)threePointAngleDraw);
                    }
                    else if (j1 == 4 && j3 == 2)
                    {
                        if (point0ToX > point2ToX)
                        {
                            g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)point0ToX, (float)threePointAngleDraw);
                        }
                        else
                        {
                            g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)(180 + point2ToX), (float)threePointAngleDraw);
                        }
                    }
                    else if (j1 == 4 && j3 == 3)
                    {
                        g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)point0ToX, (float)threePointAngleDraw);
                    }
                    else if (j1 == 4 && j3 == 4)
                    {
                        if (point0ToX > point2ToX)
                        {
                            g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)point2ToX, (float)threePointAngleDraw);
                        }
                        else
                        {
                            g.DrawArc(pen, pointArray[1].X - 30, pointArray[1].Y - 30, 60, 60, (float)point0ToX, (float)threePointAngleDraw);
                        }
                    }
                    //计算需要旋转的角度
                    this.angleClass = BasicCalculationHelper.Angle(pointArray[1], pointArray[2], new PointF(pointArray[1].X, pointArray[2].Y));
                    // 画布旋转
                    if (this.angleClass < 90)
                    {
                        matrix.RotateAt((float)this.angleClass, pointArray[1]);
                        g.Transform = matrix;
                    }
                    else
                    {
                        this.angleClass = BasicCalculationHelper.Angle(pointArray[2], pointArray[1], new PointF(pointArray[2].X, pointArray[1].Y));
                        matrix.RotateAt((float)this.angleClass, this.pointArray[1]);
                        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[2].X, (int)pointArray[2].Y);
                        if (drawingPropertiesList != null)
                        {
                            // 物理起始点Y
                            if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalStartY.ToString()))
                            {
                                sizeF = g.MeasureString(frontStr + "" + Math.Round(startPoint.Y * unitLength, decimalPlaces), textfont);
                                rectangleF7.Location = new Point((int)pointArray[1].X + offsetValue1 - (int)sizeF.Width / 2, (int)pointArray[1].Y - offset);
                                offset += offsetValue;
                            }
                            // 物理起始点X
                            if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalStartX.ToString()))
                            {
                                sizeF = g.MeasureString(frontStr + "" + Math.Round(startPoint.X * unitLength, decimalPlaces), textfont);
                                rectangleF6.Location = new Point((int)pointArray[1].X + offsetValue1 - (int)sizeF.Width / 2, (int)pointArray[1].Y - offset);
                                offset += offsetValue;
                            }
                            // 像素起始点Y
                            if (drawingPropertiesList.Contains(MeasureAttributes.PixelStartY.ToString()))
                            {
                                sizeF = g.MeasureString(frontStr + "" + startPoint.Y, textfont);
                                rectangleF5.Location = new Point((int)pointArray[1].X + offsetValue1 - (int)sizeF.Width / 2, (int)pointArray[1].Y - offset);
                                offset += offsetValue;
                            }
                            // 像素起始点X
                            if (drawingPropertiesList.Contains(MeasureAttributes.PixelStartX.ToString()))
                            {
                                sizeF = g.MeasureString(frontStr + "" + startPoint.X, textfont);
                                rectangleF4.Location = new Point((int)pointArray[1].X + offsetValue1 - (int)sizeF.Width / 2, (int)pointArray[1].Y - offset);
                                offset += offsetValue;
                            }
                            // 测量单位(英文)
                            if (drawingPropertiesList.Contains(MeasureAttributes.MeasureUnitEN.ToString()))
                            {
                                sizeF = g.MeasureString(frontStr + "" + this.unit, textfont);
                                rectangleF3.Location = new Point((int)pointArray[1].X + offsetValue1 - (int)sizeF.Width / 2, (int)pointArray[1].Y - offset);
                                offset += offsetValue;
                            }
                            // 测量单位(中文)
                            if (drawingPropertiesList.Contains(MeasureAttributes.MeasureUnitCN.ToString()))
                            {
                                sizeF = g.MeasureString(frontStr + "" + this.unitString, textfont);
                                rectangleF2.Location = new Point((int)pointArray[1].X + offsetValue1 - (int)sizeF.Width / 2, (int)pointArray[1].Y - offset);
                                offset += offsetValue;
                            }
                            // 测量方式
                            if (drawingPropertiesList.Contains(MeasureAttributes.MeasureMethod.ToString()))
                            {
                                sizeF = g.MeasureString(frontStr + "" + PdnResources.GetString("Menu.MeasureAction.AngleMeasurement.Text"), textfont);
                                rectangleF1.Location = new Point((int)pointArray[1].X + offsetValue1 - (int)sizeF.Width / 2, (int)pointArray[1].Y - offset);
                                offset += offsetValue;
                            }
                            // 角度
                            if (drawingPropertiesList.Contains(MeasureAttributes.Angle.ToString()))
                            {
                                double thisNum;
                                if (measureStyleModel.isAngle)
                                {
                                    thisNum = (this.threePointAngle * 6000) / 360;
                                }
                                else
                                {
                                    thisNum = this.threePointAngle;
                                }

                                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(frontStr + s + unitMil, textfont);
                                }
                                else
                                {
                                    sizeF = g.MeasureString(frontStr + s + unitAngle, textfont);
                                }
                                rectangleF8.Location = new Point((int)pointArray[1].X + offsetValue1 - (int)sizeF.Width / 2, (int)pointArray[1].Y - offset);
                            }
                        }
                    }
                    if (drawingPropertiesList != null)
                    {
                        // 测量方式
                        if (drawingPropertiesList.Contains(MeasureAttributes.MeasureMethod.ToString()))
                        {
                            sizeF = g.MeasureString(frontStr + "" + PdnResources.GetString("Menu.MeasureAction.AngleMeasurement.Text"), textfont);
                            rectangleF1.Width = sizeF.Width;
                            rectangleF1.Height = sizeF.Height;
                            g.DrawString(frontStr + "" + 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(frontStr + "" + this.unitString, textfont);
                            rectangleF2.Width = sizeF.Width;
                            rectangleF2.Height = sizeF.Height;
                            g.DrawString(frontStr + "" + this.unitString, textfont, textbrush, rectangleF2);
                        }
                        else
                        {
                            rectangleF2 = new RectangleF();
                        }
                        // 测量单位(英文)
                        if (drawingPropertiesList.Contains(MeasureAttributes.MeasureUnitEN.ToString()))
                        {
                            sizeF = g.MeasureString(frontStr + "" + this.unit, textfont);
                            rectangleF3.Width = sizeF.Width;
                            rectangleF3.Height = sizeF.Height;
                            g.DrawString(frontStr + "" + this.unit, textfont, textbrush, rectangleF3);
                        }
                        else
                        {
                            rectangleF3 = new RectangleF();
                        }
                        // 像素起始点X
                        if (drawingPropertiesList.Contains(MeasureAttributes.PixelStartX.ToString()))
                        {
                            sizeF = g.MeasureString(frontStr + "" + startPoint.X, textfont);
                            rectangleF4.Width = sizeF.Width;
                            rectangleF4.Height = sizeF.Height;
                            g.DrawString(frontStr + "" + startPoint.X, textfont, textbrush, rectangleF4);
                        }
                        else
                        {
                            rectangleF4 = new RectangleF();
                        }
                        // 像素起始点Y
                        if (drawingPropertiesList.Contains(MeasureAttributes.PixelStartY.ToString()))
                        {
                            sizeF = g.MeasureString(frontStr + "" + startPoint.Y, textfont);
                            rectangleF5.Width = sizeF.Width;
                            rectangleF5.Height = sizeF.Height;
                            g.DrawString(frontStr + "" + startPoint.Y, textfont, textbrush, rectangleF5);
                        }
                        else
                        {
                            rectangleF5 = new RectangleF();
                        }
                        // 物理起始点X
                        if (drawingPropertiesList.Contains(MeasureAttributes.PhysicalStartX.ToString()))
                        {
                            sizeF = g.MeasureString(frontStr + "" + Math.Round(startPoint.X * unitLength, decimalPlaces), textfont);
                            rectangleF6.Width = sizeF.Width;
                            rectangleF6.Height = sizeF.Height;
                            g.DrawString(frontStr + "" + 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(frontStr + "" + Math.Round(startPoint.Y * unitLength, decimalPlaces), textfont);
                            rectangleF7.Width = sizeF.Width;
                            rectangleF7.Height = sizeF.Height;
                            g.DrawString(frontStr + "" + 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.threePointAngle * 6000) / 360;
                            }
                            else {

                                thisNum = this.threePointAngle;
                            }

                            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(frontStr + s + unitMil, textfont);
                            }
                            else
                            {
                                sizeF = g.MeasureString(frontStr + s + unitAngle, textfont);
                            }

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

                            if (measureStyleModel.isAngle)
                            {
                                g.DrawString(frontStr + s + unitMil, textfont, textbrush, rectangleF8);
                            }
                            else {
                                g.DrawString(frontStr + s + unitAngle, textfont, textbrush, rectangleF8);
                            }
                        }
                        else
                        {
                            rectangleF8 = new RectangleF();
                        }
                    }
                    //还原为原始旋转矩阵
                    g.Transform = mtxSave;
                }
                pen.Dispose();
                matrix.Dispose();
            }
            if (this.configurationFile)
                this.pointChange = false;
            this.mouseUpAttribute = false;
            pointChangeObject.Remove(this.drawToolType);
        }
        /// <summary>
        /// 停止绘制时
        /// </summary>
        /// <param name="up"></param>
        public override void MouseUp(bool up)
        {
            mouseUpPointChange = up;
        }
        public void AddPoint(Point point)
        {
            pointArray.Add(point);
        }

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

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

            if (handleNumber > pointArray.Count && handleNumber != pointArray.Count + 1)
                handleNumber = pointArray.Count;

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

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

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

            if (handleNumber > pointArray.Count && handleNumber != pointArray.Count + 1)
                handleNumber = pointArray.Count;
            if (handleNumber == pointArray.Count + 1)
            {
                point = SetOffsetAfterRotation(point, pointArray[1], this.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;
            }
            else
            {
                this.mouseUpPointChange = true;
                pointArray[handleNumber - 1] = point;
            }
            this.startPoint = pointArray[0];
            Invalidate();
        }
        public override void Move(int deltaX, int deltaY)
        {
            int n = pointArray.Count;
            PointF point;

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

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

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

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

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

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

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

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

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

        /// <summary>
        /// Draw tracker for selected object
        /// </summary>
        /// <param name="g"></param>
        public override void DrawTracker(Graphics g)
        {
            if (!Selected)
                return;
            SolidBrush brush = new SolidBrush(Color.FromArgb(MarkpointAreaColor));
            Pen pen = new Pen(Color.FromArgb(MarkpointLineColor), MarkpointLineWidth);
            for (int i = 1; i <= HandleCount; i++)
            {
                if (i == HandleCount)
                {
                    brush = new SolidBrush(Color.Transparent);
                    pen = new Pen(Color.Transparent);
                }
                switch (MarkpointStyle)
                {
                    case 0:
                        g.FillRectangle(brush, GetHandleRectangle(i));
                        g.DrawRectangle(pen, GetHandleRectangle(i));
                        break;
                    case 1:
                        g.FillEllipse(brush, GetHandleRectangle(i));
                        g.DrawEllipse(pen, GetHandleRectangle(i));
                        break;
                    case 2:
                        g.FillPolygon(brush, GetHandlePoint(i));
                        g.DrawPolygon(pen, GetHandlePoint(i));
                        break;
                }
            }
            pen.Dispose();
            brush.Dispose();
            RectangleF rectangleF = GetBoundingBox();
            //g.DrawRectangle(new Pen(Color.White), rectangleF.X, rectangleF.Y, rectangleF.Width, rectangleF.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[1], this.angleClass))
                {
                    this.pointL = SetOffsetAfterRotation(point, pointArray[1], this.angleClass);
                    moveKb = 1;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF2, point, pointArray[1], this.angleClass))
                {
                    this.pointL = SetOffsetAfterRotation(point, pointArray[1], this.angleClass);
                    moveKb = 2;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF3, point, pointArray[1], this.angleClass))
                {
                    this.pointL = SetOffsetAfterRotation(point, pointArray[1], this.angleClass);
                    moveKb = 3;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF4, point, pointArray[1], this.angleClass))
                {
                    this.pointL = SetOffsetAfterRotation(point, pointArray[1], this.angleClass);
                    moveKb = 4;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF5, point, pointArray[1], this.angleClass))
                {
                    this.pointL = SetOffsetAfterRotation(point, pointArray[1], this.angleClass);
                    moveKb = 5;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF6, point, pointArray[1], this.angleClass))
                {
                    this.pointL = SetOffsetAfterRotation(point, pointArray[1], this.angleClass);
                    moveKb = 6;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF7, point, pointArray[1], this.angleClass))
                {
                    this.pointL = SetOffsetAfterRotation(point, pointArray[1], this.angleClass);
                    moveKb = 7;
                    return this.pointArray.Count + 1;
                }
                else if (GetRectanglePosition(this.rectangleF8, point, pointArray[1], this.angleClass))
                {
                    this.pointL = SetOffsetAfterRotation(point, pointArray[1], this.angleClass);
                    moveKb = 8;
                    return this.pointArray.Count + 1;
                }
            }

            if (PointInObject(point))
                return 0;

            return -1;
        }

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

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

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