using CoreUnit.Common;
using GUI.Properties;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Text.Json;
using System.Windows.Forms;
using System.Xml;

namespace CoreUnit.Control.UserControl.Canvas
{
    public class NodePointRectangleEdge : INodePoint
    {
        public enum ePoint
        {
            P1,
            P2,
            P3,
            P4,
            P12,
            P23,
            P34,
            P41
        }

        static bool m_angleLocked = false;
        RectangleTool m_owner;
        RectangleTool m_clone;

        UnitPoint m_originalPoint;
        public UnitPoint OriginalPoint {
            get { lock (this) { return m_originalPoint; } }
            set { lock (this) { m_originalPoint = value; } }
        }

        UnitPoint m_endPoint;
        public UnitPoint EndPoint {
            get { lock (this) { return m_endPoint; } }
            set { lock (this) { m_endPoint = value; } }
        }

        ePoint m_pointId;
        public ePoint PointId {
            get { lock (this) { return m_pointId; } }
            set { lock (this) { m_pointId = value; } }
        }

        public NodePointRectangleEdge(RectangleTool owner, ePoint id)
        {
            m_owner = owner;
            m_clone = m_owner.Clone() as RectangleTool;
            m_pointId = id;
            m_originalPoint = GetPoint(m_pointId);
        }

        #region INodePoint Members
        public IDrawObject GetClone()
        {
            return m_clone;
        }

        public IDrawObject GetOriginal()
        {
            return m_owner;
        }

        public void SetPosition(UnitPoint pos) //º¯°æµÇ´Â À§Ä¡ÀÇ Æ÷ÀÎÅÍ °ª
        {
            SetPoint(m_pointId, pos, m_clone);
        }

        public void Finish()
        {
            m_endPoint = GetPoint(m_pointId);
            m_owner.P1 = m_clone.P1;
            m_owner.P2 = m_clone.P2;
            m_owner.P3 = m_clone.P3;
            m_owner.P4 = m_clone.P4;

            m_clone = null;
        }

        public void Cancel()
        {
        }

        public void Undo()
        {
            SetPoint(m_pointId, m_originalPoint, m_owner);
        }

        public void Redo()
        {
            SetPoint(m_pointId, m_endPoint, m_owner);
        }

        public void OnKeyDown(ICanvas canvas, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.L) {
                m_angleLocked = !m_angleLocked;
                e.Handled = true;
            }
        }
        #endregion

        protected UnitPoint GetPoint(ePoint pointid)
        {
            if (pointid == ePoint.P1)
                return m_clone.P1;
            if (pointid == ePoint.P2)
                return m_clone.P2;
            if (pointid == ePoint.P3)
                return m_clone.P3;
            if (pointid == ePoint.P4)
                return m_clone.P4;
            if (pointid == ePoint.P12)
                return m_clone.P12;
            if (pointid == ePoint.P23)
                return m_clone.P23;
            if (pointid == ePoint.P34)
                return m_clone.P34;
            if (pointid == ePoint.P41)
                return m_clone.P41;

            return m_owner.P1;
        }

        protected void SetPoint(ePoint pointid, UnitPoint point, RectangleTool rect)
        {
            var rotationAngle = rect.Angle;
            var center = rect.Center;
            var startPoint = new UnitPoint(0, 0);
            UnitPoint endPoint;

            rect.P1 = HitUtil.RotatePoint(-rotationAngle, rect.P1, center);
            rect.P2 = HitUtil.RotatePoint(-rotationAngle, rect.P2, center);
            rect.P3 = HitUtil.RotatePoint(-rotationAngle, rect.P3, center);
            rect.P4 = HitUtil.RotatePoint(-rotationAngle, rect.P4, center);
            endPoint = HitUtil.RotatePoint(-rotationAngle, point, center);

            if (pointid == ePoint.P1 || pointid == ePoint.P2 || pointid == ePoint.P3 || pointid == ePoint.P4) {
                // Logic for updating corners
                if (pointid == ePoint.P1) startPoint = rect.P3;
                else if (pointid == ePoint.P2) startPoint = rect.P4;
                else if (pointid == ePoint.P3) startPoint = rect.P1;
                else if (pointid == ePoint.P4) startPoint = rect.P2;

                rect.P1 = new UnitPoint(Math.Min(startPoint.X, endPoint.X), Math.Max(startPoint.Y, endPoint.Y));
                rect.P2 = new UnitPoint(Math.Min(startPoint.X, endPoint.X), Math.Min(startPoint.Y, endPoint.Y));
                rect.P3 = new UnitPoint(Math.Max(startPoint.X, endPoint.X), Math.Min(startPoint.Y, endPoint.Y));
                rect.P4 = new UnitPoint(Math.Max(startPoint.X, endPoint.X), Math.Max(startPoint.Y, endPoint.Y));
            } else if (pointid == ePoint.P12 || pointid == ePoint.P23 || pointid == ePoint.P34 || pointid == ePoint.P41) {
                // Logic for updating edges
                if (pointid == ePoint.P12) {
                    startPoint = rect.P34;
                    rect.P1 = new UnitPoint(Math.Min(startPoint.X, endPoint.X), rect.P1.Y);
                    rect.P2 = new UnitPoint(Math.Min(startPoint.X, endPoint.X), rect.P2.Y);
                } else if (pointid == ePoint.P23) {
                    startPoint = rect.P41;
                    rect.P2 = new UnitPoint(rect.P2.X, Math.Min(startPoint.Y, endPoint.Y));
                    rect.P3 = new UnitPoint(rect.P3.X, Math.Min(startPoint.Y, endPoint.Y));
                } else if (pointid == ePoint.P34) {
                    startPoint = rect.P12;
                    rect.P3 = new UnitPoint(Math.Max(startPoint.X, endPoint.X), rect.P3.Y);
                    rect.P4 = new UnitPoint(Math.Max(startPoint.X, endPoint.X), rect.P4.Y);
                } else if (pointid == ePoint.P41) {
                    startPoint = rect.P23;
                    rect.P1 = new UnitPoint(rect.P1.X, Math.Max(startPoint.Y, endPoint.Y));
                    rect.P4 = new UnitPoint(rect.P4.X, Math.Max(startPoint.Y, endPoint.Y));
                }
            }

            //// »õ·Î¿î ȸÀü °¢µµ¸¦ Àû¿ëÇÏ¿© »ç°¢ÇüÀÇ Æ÷ÀÎÆ®¸¦ ¾÷µ¥ÀÌÆ®ÇÕ´Ï´Ù.
            rect.P1 = HitUtil.RotatePoint(rotationAngle, rect.P1, center);
            rect.P2 = HitUtil.RotatePoint(rotationAngle, rect.P2, center);
            rect.P3 = HitUtil.RotatePoint(rotationAngle, rect.P3, center);
            rect.P4 = HitUtil.RotatePoint(rotationAngle, rect.P4, center);
        }
    }

    class NodePointRectangleCenter : INodePoint
    {
        RectangleTool m_owner;
        RectangleTool m_clone;

        UnitPoint m_originalPoint;
        public UnitPoint OriginalPoint {
            get { lock (this) { return m_originalPoint; } }
            set { lock (this) { m_originalPoint = value; } }
        }

        UnitPoint m_endPoint;
        public UnitPoint EndPoint {
            get { lock (this) { return m_endPoint; } }
            set { lock (this) { m_endPoint = value; } }
        }

        public NodePointRectangleCenter(RectangleTool owner)
        {
            m_owner = owner;
            m_clone = m_owner.Clone() as RectangleTool;
            m_owner.Selected = false;
            m_originalPoint = GetPoint();
        }

        #region INodePoint Members
        public IDrawObject GetClone()
        {
            return m_clone;
        }

        public IDrawObject GetOriginal()
        {
            return m_owner;
        }

        public void SetPosition(UnitPoint pos)
        {
            SetPoint(pos);
        }

        public void Finish()
        {
            m_endPoint = GetPoint();
            m_owner.P1 = m_clone.P1;
            m_owner.P2 = m_clone.P2;
            m_owner.P3 = m_clone.P3;
            m_owner.P4 = m_clone.P4;
            m_owner.Selected = true;

            m_clone = null;
        }

        public void Cancel()
        {
            m_owner.Selected = true;
        }

        public void Undo()
        {
            m_originalPoint = m_owner.Center;
        }

        public void Redo()
        {
            m_endPoint = m_owner.Center;
        }

        public void OnKeyDown(ICanvas canvas, KeyEventArgs e)
        {
        }
        #endregion

        protected UnitPoint GetPoint()
        {
            return m_clone.Center;
        }

        protected void SetPoint(UnitPoint point)
        {
            m_clone.Center = point;
        }
    }

    class NodePointRectangleAngle : INodePoint
    {
        protected RectangleTool m_owner;
        protected RectangleTool m_clone;
        protected float m_originalAngle;
        protected float m_endAngle;

        public NodePointRectangleAngle(RectangleTool owner)
        {
            m_owner = owner;
            m_clone = m_owner.Clone() as RectangleTool;
            m_clone.Angle = m_owner.Angle;
            m_originalAngle = m_owner.Angle;
            m_owner.Selected = false;
        }

        #region INodePoint Members
        public IDrawObject GetClone()
        {
            return m_clone;
        }

        public IDrawObject GetOriginal()
        {
            return m_owner;
        }

        public virtual void SetPosition(UnitPoint pos)
        {
            m_clone.Angle = (float)HitUtil.RadiansToDegrees(HitUtil.LineAngleR(m_clone.Center, pos, 0)) - 90;
        }

        public virtual void Finish()
        {
            m_endAngle = m_clone.Angle;
            m_owner.P1 = m_clone.P1;
            m_owner.P2 = m_clone.P2;
            m_owner.P3 = m_clone.P3;
            m_owner.P4 = m_clone.P4;
            m_owner.Selected = true;

            m_clone = null;
        }

        public void Cancel()
        {
            m_owner.Selected = true;
        }

        public virtual void Undo()
        {
            m_owner.Angle = m_originalAngle;
        }

        public virtual void Redo()
        {
            m_owner.Angle = m_endAngle;
        }

        public void OnKeyDown(ICanvas canvas, KeyEventArgs e)
        {
        }
        #endregion
    }

    public class RectangleTool : DrawObjectBase, IDrawObject, ISerialize
    {
        protected UnitPoint m_startPoint = UnitPoint.Empty;
        protected UnitPoint m_endPoint = UnitPoint.Empty;

        UnitPoint m_originalCenter;
        public UnitPoint OriginalCenter {
            get { lock (this) { return m_originalCenter; } }
            set { lock (this) { m_originalCenter = value; } }
        }

        UnitPoint m_P1; //»ç°¢Çü¿¡¼­ Left,Top
        [Browsable(false)]
        public UnitPoint P1 {
            get { return m_P1; }
            set { m_P1 = value; }
        }

        UnitPoint m_P2; //»ç°¢Çü¿¡¼­ Left,Bottom
        [Browsable(false)]
        public UnitPoint P2 {
            get { return m_P2; }
            set { m_P2 = value; }
        }

        UnitPoint m_P3; //»ç°¢Çü¿¡¼­ Right,Bottom
        [Browsable(false)]
        public UnitPoint P3 {
            get { return m_P3; }
            set { m_P3 = value; }
        }

        UnitPoint m_P4;//»ç°¢Çü¿¡¼­ Right,Top
        [Browsable(false)]
        public UnitPoint P4 {
            get { return m_P4; }
            set { m_P4 = value; }
        }

        [Browsable(false)]
        public UnitPoint P12 {
            get => (P1 + P2) / 2;
        }

        [Browsable(false)]
        public UnitPoint P23 {
            get => (P2 + P3) / 2;
        }

        [Browsable(false)]
        public UnitPoint P34 {
            get => (P3 + P4) / 2;
        }

        [Browsable(false)]
        public UnitPoint P41 {
            get => (P4 + P1) / 2;
        }

        [Browsable(false)]
        public UnitPoint AnglePoint {
            get { return HitUtil.RotatePoint(Angle, new UnitPoint(Center.X, Center.Y + 10), Center); }
        }

        public static string ObjectType {
            get { return "Rectangle"; }
        }

        [Browsable(false)]
        public UnitPoint Center {
            get { return new UnitPoint(MiddlePoint.X, MiddlePoint.Y); }
            set { MiddlePoint = value.Point; }
        }

        [Browsable(false)]
        public double DiagonalLine {
            get { return HitUtil.Distance(P1, P4); }
        }

        public RectangleTool()
        {

        }

        static int ThresholdPixel = 6;
        static float ThresholdWidth(ICanvas canvas, float objectwidth)
        {
            return ThresholdWidth(canvas, objectwidth, ThresholdPixel);
        }

        public static float ThresholdWidth(ICanvas canvas, float objectwidth, float pixelwidth)
        {
            double minWidth = canvas.ToUnit(pixelwidth);
            double width = Math.Max(objectwidth / 2, minWidth);
            return (float)width;
        }

        public override void InitializeFromModel(UnitPoint point, DrawingLayer layer, ISnapPoint snap)
        {
            m_startPoint = m_endPoint = P1 = P2 = P3 = P4 = point;
            m_originalCenter = Center;
            Width = layer.Width;
            Color = layer.Color;
            Selected = true;
        }

        public void Copy(RectangleTool acopy)
        {
            base.Copy(acopy);

            m_startPoint = acopy.P1;
            m_endPoint = acopy.P3;

            m_originalCenter = acopy.m_originalCenter;


            P1 = acopy.P1;
            P2 = acopy.P2;
            P3 = acopy.P3;
            P4 = acopy.P4;
            Angle = acopy.Angle;
            m_no = acopy.No;
            Type = acopy.Type;

            Selected = acopy.Selected;

            //¸¶Å·°´Ã¼¿¡ ´ëÇÑ ¼Ó¼º º¹»ç
            Enabled = acopy.Enabled;
            MarkingCount = acopy.MarkingCount;

            WeldingParameterID = acopy.WeldingParameterID;
            ScannerParamNo = acopy.ScannerParamNo;
            ScannerParamID = acopy.ScannerParamID;
        }

        #region IDrawObject Members

        #region 1.¸¶Å·°´Ã¼¿¡ ´ëÇÑ ¼Ó¼º
        bool m_enabled = true;
        [Browsable(true)]
        [ReadOnly(false)]
        [Category("¿ëÁ¢ ÆĶó¹ÌÅÍ")]
        [DisplayName("¿ëÁ¢ ÀÛ¾÷ À¯¹«")]
        [Description("¿ëÁ¢ ÀÛ¾÷ ÁøÇà ¿©ºÎ")]
        [XmlSerializable]
        public bool Enabled {
            get { return m_enabled; }
            set { m_enabled = value; }
        }

        uint m_markingCount = 1;
        [Browsable(true)]
        [ReadOnly(false)]
        [Category("¿ëÁ¢ ÆĶó¹ÌÅÍ")]
        [DisplayName("¿ëÁ¢ Ƚ¼ö")]
        [Description("¿ëÁ¢ ÀÛ¾÷ ¹Ýº¹ Ƚ¼ö")]
        [XmlSerializable]
        public uint MarkingCount {
            get { return m_markingCount; }
            set { m_markingCount = value; }
        }
        #endregion

        #region 2.µå·ÎÀ× °´Ã¼¿¡ ´ëÇÑ ¼Ó¼º
        int m_no;
        [Browsable(true)]
        [ReadOnly(true)]
        [Category("°´Ã¼")]
        [DisplayName("ID")]
        [Description("µå·ÎÀ× °´Ã¼ ¹øÈ£")]
        [XmlSerializable]
        public int No {
            get { return m_no; }
            set { m_no = value; }
        }

        string m_type;
        [Browsable(true)]
        [ReadOnly(true)]
        [Category("°´Ã¼")]
        [DisplayName("Á¾·ù")]
        [Description("µå·ÎÀ× °´Ã¼ Á¾·ù")]
        [XmlSerializable]
        public virtual string Type {
            get {
                m_type = RectangleTool.ObjectType;
                return m_type;
            }
            set { m_type = value; }
        }

        [Browsable(true)]
        [ReadOnly(true)]
        [Category("GEOMETRY")]
        [DisplayName("1.¿ÞÂÊ »óÀ§Á¡[X,Y](mm)")]
        [Description("¢Ø±×·ì °´Ã¼ ¿µ¿ªÀÇ ¿ÞÂÊ »óÀ§Á¡")]
        [TypeConverter(typeof(PointFConverter))]
        [XmlSerializable]
        public PointF PF1 {
            get { return P1.Point; }
            set { P1 = new UnitPoint(value); }
        }

        [Browsable(true)]
        [ReadOnly(true)]
        [Category("GEOMETRY")]
        [DisplayName("2.¿ÞÂÊ ÇÏÀ§Á¡[X,Y](mm)")]
        [Description("¢×±×·ì °´Ã¼ ¿µ¿ªÀÇ ¿ÞÂÊ ÇÏÀ§Á¡")]
        [TypeConverter(typeof(PointFConverter))]
        [XmlSerializable]
        public PointF PF2 {
            get { return P2.Point; }
            set { P2 = new UnitPoint(value); }
        }

        [Browsable(true)]
        [ReadOnly(true)]
        [Category("GEOMETRY")]
        [DisplayName("3.¿À¸¥ÂÊ ÇÏÀ§Á¡[X,Y](mm)")]
        [Description("¢Ù±×·ì °´Ã¼ ¿µ¿ªÀÇ ¿À¸¥ÂÊ ÇÏÀ§Á¡")]
        [TypeConverter(typeof(PointFConverter))]
        [XmlSerializable]
        public PointF PF3 {
            get { return P3.Point; }
            set { P3 = new UnitPoint(value); }
        }

        [Browsable(true)]
        [ReadOnly(true)]
        [Category("GEOMETRY")]
        [DisplayName("4.¿À¸¥ÂÊ »óÀ§Á¡[X,Y](mm)")]
        [Description("¢Ö±×·ì °´Ã¼ ¿µ¿ªÀÇ ¿À¸¥ÂÊ »óÀ§Á¡")]
        [TypeConverter(typeof(PointFConverter))]
        [XmlSerializable]
        public PointF PF4 {
            get { return P4.Point; }
            set { P4 = new UnitPoint(value); }
        }

        [Browsable(true)]
        [ReadOnly(false)]
        [Category("GEOMETRY")]
        [DisplayName("5.Áß½ÉÁ¡[X,Y](mm)")]
        [Description("Áß½ÉÁ¡")]
        [TypeConverter(typeof(PointFConverter))]
        public PointF MiddlePoint {
            get {
                return HitUtil.LineMidpoint(P2, P4).Point;
            }
            set {
                PointF offset = new PointF();
                offset.X = (value.X - MiddlePoint.X);
                offset.Y = (value.Y - MiddlePoint.Y);
                Move(new UnitPoint(offset));
            }
        }

        [Browsable(true)]
        [ReadOnly(false)]
        [Category("GEOMETRY")]
        [DisplayName("6.°¢µµ(¢ª)")]
        [Description("µå·ÎÀ× °´Ã¼ÀÇ °¢µµ")]
        public float Angle {
            get { return (float)Math.Round(HitUtil.RadiansToDegrees(HitUtil.LineAngleR(P1, P4, 0)), 3); ; }
            set {
                float angle = value - Angle;
                Rotate(angle, Center);
            }
        }

        [Browsable(true)]
        [ReadOnly(true)]
        [Category("Boundary")]
        [DisplayName("Left,Bottom,Right,Top")]
        [Description("Boundary of Object")]
        [TypeConverter(typeof(RectangleFConverter))]
        public RectangleF ClientRect {
            get {
                List<UnitPoint> points = new List<UnitPoint> { P1, P2, P3, P4 };
                return ScreenUtils.GetRect(points, 0);
            }
        }

        int m_scannerParamNo = 0;
        [Browsable(false)]
        [ReadOnly(false)]
        [Category("3. Marking Parameter")]
        [DisplayName("¿ëÁ¢ Á¶°Ç ¹øÈ£")]
        [Description("¿ëÁ¢ Á¶°Ç(½ºÄµ¼Óµµ ¹× ·¹ÀÌÀú ÆÄ¿ö °ªµî..) ¹øÈ£ ¼³Á¤")]
        [XmlSerializable]
        public int ScannerParamNo {
            get { return m_scannerParamNo; }
            set { m_scannerParamNo = value; }
        }

        [Browsable(false)]
        [ReadOnly(false)]
        [Category("3. Marking Parameter")]
        [DisplayName("¿ëÁ¢ Á¶°Ç ID")]
        [Description("¿ëÁ¢ Á¶°Ç(½ºÄµ¼Óµµ ¹× ·¹ÀÌÀú ÆÄ¿ö °ªµî..) ID ¼³Á¤")]
        [XmlSerializable]
        public int ScannerParamID {
            get { return m_scannerParamNo + 1; }
            set { m_scannerParamNo = value - 1; }
        }

        [Browsable(true)]
        [ReadOnly(false)]
        [Category("Pen")]
        [DisplayName("Parameter ID")]
        [Description("Welding Paramter ID")]
        [Editor(typeof(WeldingParameterIDEditor.WeldingParamterNoUITypeEditor), typeof(System.Drawing.Design.UITypeEditor))]
        [XmlSerializable]
        public WeldingParameterIDEditor.eWeldingParamterID WeldingParameterID {
            get { return (WeldingParameterIDEditor.eWeldingParamterID)ScannerParamID; }
            set { ScannerParamID = (int)value; }
        }
        #endregion

        public IDrawObject Clone()
        {
            RectangleTool a = new RectangleTool();
            a.Copy(this);
            return a;
        }

        public RectangleF GetBoundingRect(ICanvas canvas)
        {
            float thWidth = ThresholdWidth(canvas, Width, ThresholdPixel);

            if (thWidth < Width) {
                thWidth = Width;
            }

            List<UnitPoint> points = new List<UnitPoint> { P1, P2, P3, P4 };
            return ScreenUtils.GetRect(points, thWidth);
        }

        public void Draw(ICanvas canvas, RectangleF unitrect)
        {
            Color color = Color;

            color = WeldingParameterIDEditor.weldingColorList[(int)WeldingParameterID - 1];
            Pen pen = canvas.CreatePen(color, Width);

            //2.Rectangle °´Ã¼ÀÇ °¡ÀåÀÚ¸® bound draw ÇÔ¼ö
            if (Highlighted || Selected) {
                pen = DrawUtils.SelectedPen;

                if (Locked == false) {
                    //3.Rectangle °´Ã¼¿¡ ´ëÇÑ Á᫐ À§Ä¡ Á¡ draw ÇÔ¼ö
                    canvas.DrawArc(canvas, pen, new UnitPoint(MiddlePoint.X, MiddlePoint.Y), Settings.Default.GroupCenterCircleRadius, 0, 360);

                    DrawUtils.DrawNode(canvas, P1);
                    DrawUtils.DrawNode(canvas, P2);
                    DrawUtils.DrawNode(canvas, P3);
                    DrawUtils.DrawNode(canvas, P4);

                    DrawUtils.DrawNode(canvas, P41);
                    DrawUtils.DrawNode(canvas, P12);
                    DrawUtils.DrawNode(canvas, P23);
                    DrawUtils.DrawNode(canvas, P34);

                    //3.Rectangle °´Ã¼¿¡ ȸÀüÁ¡ draw ÇÔ¼ö
                    canvas.DrawArc(canvas, pen, AnglePoint, Settings.Default.GroupCenterCircleRadius, 0, 360);
                    //4.Rectangle ÀÇ Áß½ÉÁ¡°ú ȸÀüÁ¡ »çÀÌÀÇ Á÷¼±
                    canvas.DrawLine(canvas, pen, Center, AnglePoint);
                }
            }

            canvas.DrawLines(canvas, pen, new List<UnitPoint>() { P1, P2, P3, P4 });
        }

        public bool PointInObject(ICanvas canvas, UnitPoint point)
        {
            RectangleF boundingrect = GetBoundingRect(canvas);
            return boundingrect.Contains(point.Point);
        }

        public bool ObjectInRectangle(ICanvas canvas, RectangleF rect, bool anyPoint)
        {
            RectangleF boundingrect = GetBoundingRect(canvas);
            if (anyPoint) {
                return (HitUtil.LineIntersectWithRect(P1, P2, rect) || HitUtil.LineIntersectWithRect(P3, P4, rect));
            }
            return rect.Contains(boundingrect);
        }

        public void OnMouseMove(ICanvas canvas, UnitPoint point)
        {
            if (Locked == false) {
                m_endPoint = point;
                DrawBound(m_startPoint, m_endPoint);
            }
        }

        public void DrawBound(UnitPoint startPoint, UnitPoint endPoint)
        {
            P1 = new UnitPoint(Math.Min(startPoint.X, endPoint.X), Math.Max(startPoint.Y, endPoint.Y));
            P2 = new UnitPoint(Math.Min(startPoint.X, endPoint.X), Math.Min(startPoint.Y, endPoint.Y));
            P3 = new UnitPoint(Math.Max(startPoint.X, endPoint.X), Math.Min(startPoint.Y, endPoint.Y));
            P4 = new UnitPoint(Math.Max(startPoint.X, endPoint.X), Math.Max(startPoint.Y, endPoint.Y));
        }

        public eDrawObjectMouseDown OnMouseDown(ICanvas canvas, UnitPoint point, ISnapPoint snappoint)
        {
            Selected = false;
            return eDrawObjectMouseDown.Done;
        }

        public void OnMouseUp(ICanvas canvas, UnitPoint point, ISnapPoint snappoint)
        {

        }
        public void OnKeyDown(ICanvas canvas, KeyEventArgs e)
        {

        }

        [Browsable(false)]
        public UnitPoint RepeatStartingPoint {
            get { return UnitPoint.Empty; }
        }

        public INodePoint NodePoint(ICanvas canvas, UnitPoint point)
        {
            if (Locked == false) {
                float thWidth = ThresholdWidth(canvas, Width);

                if (HitUtil.CircleHitPoint(Center, thWidth, point)) {
                    return new NodePointRectangleCenter(this);
                }

                if (HitUtil.CircleHitPoint(AnglePoint, thWidth, point)) {
                    return new NodePointRectangleAngle(this);
                }

                OriginalCenter = Center;

                #region Node Point Edge
                if (HitUtil.CircleHitPoint(P1, thWidth, point)) {
                    return new NodePointRectangleEdge(this, NodePointRectangleEdge.ePoint.P1);
                }
                if (HitUtil.CircleHitPoint(P2, thWidth, point)) {
                    return new NodePointRectangleEdge(this, NodePointRectangleEdge.ePoint.P2);
                }
                if (HitUtil.CircleHitPoint(P3, thWidth, point)) {
                    return new NodePointRectangleEdge(this, NodePointRectangleEdge.ePoint.P3);
                }
                if (HitUtil.CircleHitPoint(P4, thWidth, point)) {
                    return new NodePointRectangleEdge(this, NodePointRectangleEdge.ePoint.P4);
                }
                if (HitUtil.CircleHitPoint(P12, thWidth, point)) {
                    return new NodePointRectangleEdge(this, NodePointRectangleEdge.ePoint.P12);
                }
                if (HitUtil.CircleHitPoint(P23, thWidth, point)) {
                    return new NodePointRectangleEdge(this, NodePointRectangleEdge.ePoint.P23);
                }
                if (HitUtil.CircleHitPoint(P34, thWidth, point)) {
                    return new NodePointRectangleEdge(this, NodePointRectangleEdge.ePoint.P34);
                }
                if (HitUtil.CircleHitPoint(P41, thWidth, point)) {
                    return new NodePointRectangleEdge(this, NodePointRectangleEdge.ePoint.P41);
                }
                #endregion
            }

            return null;
        }

        public ISnapPoint SnapPoint(ICanvas canvas, UnitPoint point, List<IDrawObject> otherobj, Type[] runningsnaptypes, Type usersnaptype)
        {
            return null;
        }

        public void Move(UnitPoint offset)
        {
            P1 += offset;
            P2 += offset;
            P3 += offset;
            P4 += offset;
        }

        public void Rotate(float angle, UnitPoint center)
        {
            P1 = HitUtil.RotatePoint(angle, P1, center);
            P2 = HitUtil.RotatePoint(angle, P2, center);
            P3 = HitUtil.RotatePoint(angle, P3, center);
            P4 = HitUtil.RotatePoint(angle, P4, center);
        }

        public void MakeLength(float distance)
        {
        }

        public virtual string GetInfoAsString()
        {
            return string.Format("{1:D3} {0}@Boundary:{2:F3}",
                this.Type,
                No + 1,
                ClientRect);
        }
        #endregion

        #region ISerialize
        public virtual void GetObjectData(XmlWriter wr)
        {
            wr.WriteStartElement(Type);
            Common.XmlUtil.WriteProperties(this, wr);
            wr.WriteEndElement();
        }

        public virtual string GetObjectData()
        {
            string jsonString = string.Empty;
            var options = new JsonSerializerOptions { WriteIndented = true };
            try {
                jsonString += JsonSerializer.Serialize(this, options);
            } catch {

            }
            return jsonString;
        }

        private void GetRectangleObjectData(IDrawObject obj, XmlWriter wr)
        {
            wr.WriteStartElement(obj.Type);
            Common.XmlUtil.WriteProperties(obj, wr);
            wr.WriteEndElement();
        }

        public void AfterSerializedIn()
        {
        }
        #endregion
    }
}