using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.Diagnostics;

using GrxCAD.Geometry;
using GrxCAD.DatabaseServices;
using GrxCAD.ApplicationServices;
using GrxCAD.EditorInput;



namespace HCTools
{
    public struct Contourpoint
    {
        public double x;
        public double y;
        public double z;
        public ObjectId objID;
    }

    /// <summary>
    /// 记录闭合等高线高程和距高程点距离
    /// 包含高程和距离
    /// </summary>
    public struct closecontour
    {
        public double elevation;
        public double interval;
    }

    /// <summary>
    /// 判断点线是否有矛盾
    /// </summary>
    class ChPLContradiction
    {
        public static int blc;//比例尺
        public static string sqx;//首曲线
        public static string jqx;//计曲线
        public const int looptimes = 5;//循环查找次数
        public static string elevationLayer;//高程点图层名
        public int leng;//查找距离
        int temp;

        public int windowwidth;//当前可视范围
        public int windowheight;


        //存放所有高程点数组
        public List<Contourpoint> pointarrlist = new List<Contourpoint>();

        //存放有问题的高程点数组
        public List<Contourpoint> errorpointarrlist = new List<Contourpoint>();

        //存放无法识别点数组
        public List<Contourpoint> unrecognize = new List<Contourpoint>();

        //存放搜索到的等高线用于判断是否重复
        public List<Polyline> plltemp = new List<Polyline>();
        public List<Polyline2d> pll2dtemp = new List<Polyline2d>();


        /// <summary>
        /// 检测点线矛盾，并画圆标记出错误点
        /// </summary>

        public void contourch()
        {
            Editor editor = GrxCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor;

            //清空各数组
            pointarrlist.Clear();
            errorpointarrlist.Clear();


            double flagradius = 4.0 * blc / 1000;//画圆标记半径
            leng = Convert.ToInt32(flagradius + 8);//确定搜索距离
            temp = leng;
            windowwidth = 30 * 4 * blc / 1000;//确定可视范围
            windowheight = 30 * 4 * blc / 1000;


            selectcontourpoint(elevationLayer);//选出高程点
            if (pointarrlist.Count == 0)
            {
                return;
            }


            //开始计时
            Stopwatch watch = new Stopwatch();
            watch.Start();

            LayerControl layerscontrol = new LayerControl();
            string layname = "点线矛盾标记图层";
            if (layerscontrol.haslayername(layname) == false)
            {
                colorgb col = new colorgb(255, 0, 0);
                layerscontrol.creatlayer(layname, col);
            }
            layname = "点线矛盾高程点图层";
            if (layerscontrol.haslayername(layname) == false)
            {
                colorgb col = new colorgb(255, 255, 0);
                layerscontrol.creatlayer(layname, col);
                layerscontrol.movelayertofront(layname);
            }
            layname = "无法识别";
            if (layerscontrol.haslayername(layname) == false)
            {
                colorgb colo = new colorgb(0, 255, 0);
                layerscontrol.creatlayer(layname, colo);
            }

            //遍历各高程点，检测是否高程值有错误
            for (int i = 0; i < pointarrlist.Count; i++)
            {
                Contourpoint p = pointarrlist[i];
                check(p);
            }

            Database database = HostApplicationServices.WorkingDatabase;
            

            //遍历各错误高程点，画圆标记出
            for (int i = 0; i < errorpointarrlist.Count; i++)
            {
                Contourpoint p = errorpointarrlist[i];
                double x = p.x;
                double y = p.y;
                double z = p.z;
                ObjectId id = p.objID;

                using (Transaction acTrans = database.TransactionManager.StartTransaction())
                {
                    ViewTableRecord currview = editor.GetCurrentView();
                    currview.CenterPoint = new Point2d(x, y);
                    currview.ViewDirection = new Vector3d(0, 0, 1);
                    currview.Width = windowwidth;
                    currview.Height = windowheight;
                    editor.SetCurrentView(currview);
                    acTrans.Commit();
                }

                Transaction traction = database.TransactionManager.StartTransaction();
                DocumentLock documentlock = GrxCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.LockDocument();
                BlockTable blocktable = traction.GetObject(database.BlockTableId,
                                         OpenMode.ForWrite) as BlockTable;
                makeflag(errorpointarrlist[i].x, errorpointarrlist[i].y, 0, flagradius, 1);
                Entity entity = (Entity)traction.GetObject(id, OpenMode.ForWrite);
                entity.Layer = "点线矛盾高程点图层";


                //ViewTableRecord currview = editor.GetCurrentView();
                //currview.CenterPoint = new Point2d(x, y);
                //currview.ViewDirection = new Vector3d(0, 0, 1);
                //currview.Width = windowwidth;
                //currview.Height = windowheight;
                //editor.SetCurrentView(currview);

                Point3d p1 = new Point3d(p.x - 4 * blc / 2000, p.y - 4 * blc / 2000, 0);
                Point3d p2 = new Point3d(p.x + 4 * blc / 2000, p.y + 4 * blc / 2000, 0);
                TypedValue[] typedvalue = new TypedValue[2];

                typedvalue.SetValue(new TypedValue((int)DxfCode.Start, "Text"), 0);
                typedvalue.SetValue(new TypedValue((int)DxfCode.LayerName, elevationLayer), 1);

                SelectionFilter filter = new SelectionFilter(typedvalue);
                PromptSelectionResult psr = editor.SelectCrossingWindow(p1, p2, filter);

                if (psr.Status == PromptStatus.OK)
                {
                    SelectionSet set = psr.Value;
                    ObjectId[] objs = new ObjectId[set.Count];
                    objs = set.GetObjectIds();
                    for (int ii = 0; ii < objs.Length; ii++)
                    {
                        Entity Text = (Entity)traction.GetObject(objs[ii], OpenMode.ForWrite);

                        DBText T = (DBText)Text;

                        double T_Value = Convert.ToDouble(T.TextString);

                        if (T_Value == z)
                        {
                            T.Layer = "点线矛盾高程点图层";

                        }
                    }
                }
                traction.Commit();
                documentlock.Dispose();
            }
            



            for (int i = 0; i < unrecognize.Count; i++)
            {
                makeflag(unrecognize[i].x, unrecognize[i].y, 0, flagradius, 2);
            }





            //耗时
            watch.Stop();
            long times = watch.ElapsedMilliseconds;

            //editor.Regen();
            //editor.UpdateScreen();

            editor.WriteMessage("\n" + "耗时：" + times.ToString() + "毫秒");
            editor.WriteMessage("\n" + "检测到错误高程点" + errorpointarrlist.Count.ToString());
            editor.WriteMessage("\n" + "检测到无法识别点" + unrecognize.Count.ToString());
            editor.WriteMessage("\n");



        }



        /// <summary>
        /// 在错误高程点处画圆标记
        /// </summary>
        /// <param name="radius">圆的半径</param>
        public void makeflag(double x, double y, double z, double radius, int type)
        {
            Database database = HostApplicationServices.WorkingDatabase;
            DocumentLock doclock = GrxCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.LockDocument();
            Transaction traction = database.TransactionManager.StartTransaction();
            try
            {
                BlockTable blocktable;
                blocktable = traction.GetObject(database.BlockTableId,
                                             OpenMode.ForWrite) as BlockTable;

                BlockTableRecord blocktablerecord;
                blocktablerecord = traction.GetObject(blocktable[BlockTableRecord.ModelSpace],
                                                OpenMode.ForWrite) as BlockTableRecord;
                

                Circle circ = new Circle();
                if (type == 1)
                {
                    circ.Layer = "点线矛盾标记图层";
                }
                else if (type == 2)
                {
                    circ.Layer = "无法识别";
                }

                circ.Center = new Point3d(x, y, z);
                circ.Radius = radius;
                circ.Normal = new Vector3d(0, 0, 1);
                circ.SetDatabaseDefaults();
                blocktablerecord.AppendEntity(circ);
                traction.AddNewlyCreatedDBObject(circ, true);
                traction.Commit();
            }
            catch (GrxCAD.Runtime.Exception)
            {
                traction.Abort();
            }
            finally
            {
                doclock.Dispose();
                traction.Dispose();
            }

        }



        /// <summary>
        /// 选出所有高程点,并取出其x，y，z坐标
        /// </summary>
        /// <param name="layername">高程点图层名</param>
        public void selectcontourpoint(string layername)
        {
            Document document = GrxCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
            Database database = HostApplicationServices.WorkingDatabase;

            // 获得当前文档的编辑器  
            Editor editor = GrxCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor;
            // 创建一个 TypedValue 数组，用于定义过滤条件
            TypedValue[] typedvalue = new TypedValue[1];
            typedvalue.SetValue(new TypedValue((int)DxfCode.LayerName, layername), 0);
            // 赋值过滤条件给 SelectionFilter 对象
            SelectionFilter selectionfilter = new SelectionFilter(typedvalue);
            // 要求在图形区域中手动选择对象
            PromptSelectionResult psr = editor.GetSelection(selectionfilter);
            //自动选择图像区域全部对象
            //PromptSelectionResult psr = editor.SelectAll(selectionfilter);

            if (psr.Status == PromptStatus.OK)
            {
                SelectionSet selectionset = psr.Value;
                ObjectId[] obj = new ObjectId[selectionset.Count];
                obj = selectionset.GetObjectIds();


                for (int i = 0; i < obj.Length; i++)
                {
                    using (Transaction traction = database.TransactionManager.StartTransaction())
                    {
                        ObjectId objid = obj[i];

                        //找到实体，取出高程点的x，y，z
                        Entity entity = (Entity)traction.GetObject(objid, OpenMode.ForRead);

                        if (entity is BlockReference)
                        {
                            BlockReference blockreference = (BlockReference)entity;
                            Contourpoint cp = new Contourpoint();

                            cp.x = Math.Round(blockreference.Position.X, 4, MidpointRounding.AwayFromZero);
                            cp.y = Math.Round(blockreference.Position.Y, 4, MidpointRounding.AwayFromZero);
                            cp.z = Math.Round(blockreference.Position.Z, 4, MidpointRounding.AwayFromZero);
                            cp.objID = objid;
                            pointarrlist.Add(cp);
                        }
                        traction.Commit();
                    }
                }
                editor.WriteMessage("\n" + "选中高程点数量:" + pointarrlist.Count.ToString());
            }
        }



        /// <summary>
        /// 检查是否错误  
        /// </summary>
        public void check(Contourpoint p)
        {
            double x = Math.Round(p.x, 4, MidpointRounding.AwayFromZero);
            double y = Math.Round(p.y, 4, MidpointRounding.AwayFromZero);
            double z = Math.Round(p.z, 4, MidpointRounding.AwayFromZero);

            List<double> toplist = calculatevalue(x, y, z, 1);
            List<double> belowlist = calculatevalue(x, y, z, 3);



            //点在上下两条等高线中间情况

            if ((toplist.Count > 0) && (belowlist.Count > 0))
            {
                //1.一般情况
                #region 一般情况
                if (toplist[0] > belowlist[belowlist.Count - 1])
                {
                    //高程值上大小小
                    if (z >= toplist[0] || z <= belowlist[belowlist.Count - 1])
                    {
                        errorpointarrlist.Add(p);
                        return;
                    }
                    else
                        return;
                }
                //高程值上小下大
                if (toplist[toplist.Count - 1] < belowlist[0])
                {
                    if (z >= belowlist[0] || z <= toplist[toplist.Count - 1])
                    {
                        errorpointarrlist.Add(p);
                        return;
                    }
                    else
                        return;

                }




                #endregion

                //点在左右半包围情况,上下高程相等，要么是最大，要么是最小，进行左右搜索比较
                //2.半包围一般情况
                #region 半包围一般情况
                if ((toplist[0] == belowlist[0]) || (toplist[toplist.Count - 1] == belowlist[belowlist.Count - 1]))
                {
                    List<double> rightlist = calculatevalue(x, y, z, 4);
                    List<double> leftlist = calculatevalue(x, y, z, 2);


                    if ((rightlist.Count > 0) && (leftlist.Count > 0))
                    {

                        //高程值右大左小
                        if (rightlist[0] > leftlist[leftlist.Count - 1])
                        {
                            if ((z >= rightlist[0]) || (z <= leftlist[leftlist.Count - 1]))
                            {
                                errorpointarrlist.Add(p);
                                return;
                            }
                            else
                                return;
                        }
                        //高程值右小左大
                        if (leftlist[0] > rightlist[rightlist.Count - 1])
                        {
                            if ((z >= leftlist[0]) || (z <= rightlist[rightlist.Count - 1]))
                            {
                                errorpointarrlist.Add(p);
                                return;
                            }
                            else
                                return;
                        }
                #endregion
                        //3.大半包围或闭合情况，即上下左右高程值相等
                        #region 四面闭合
                        if ((rightlist[0] == leftlist[0]) || (rightlist[rightlist.Count - 1] == leftlist[leftlist.Count - 1]))
                        {
                            //ArrayList closecontourlist = new ArrayList();
                            List<closecontour> closecontourlist = new List<closecontour>();
                            closecontourlist = closecontourcheck(p, 1);
                            if (closecontourlist.Count < 2)
                            {
                                closecontourlist = closecontourcheck(p, 3);
                                if (closecontourlist.Count < 2)
                                {
                                    closecontourlist = closecontourcheck(p, 2);
                                    if (closecontourlist.Count < 2)
                                    {
                                        closecontourlist = closecontourcheck(p, 4);
                                        if (closecontourlist.Count < 2)
                                        {
                                            unrecognize.Add(p);
                                            return;
                                        }
                                    }
                                }
                            }



                            //存储高程值计算等高距
                            List<double> ele = new List<double>();
                            if (closecontourlist.Count >= 2)
                            {
                                double minidistance = closecontourlist[0].interval;
                                double contour = closecontourlist[0].elevation;
                                ele.Add(contour);

                                for (int i = 1; i < closecontourlist.Count; i++)
                                {
                                    if (closecontourlist[i].interval < minidistance)
                                    {
                                        minidistance = closecontourlist[i].interval;
                                        contour = closecontourlist[i].elevation;
                                    }
                                    ele.Add(closecontourlist[i].elevation);

                                }
                                //从小到大排序
                                ele.Sort();
                                //等高距
                                double contourinterval = ele[1] - ele[0];


                                //中间高程最小
                                if (contour == ele[0])
                                {
                                    if ((z - ele[0] >= 0) || ((ele[0] - contourinterval) - z >= 0))
                                    //if ((z > ele[0]) || z < (ele[0] - contourinterval))
                                    {
                                        errorpointarrlist.Add(p);
                                        return;
                                    }
                                    else
                                        return;
                                }
                                //中间高程最大
                                if (contour == ele[ele.Count - 1])
                                {
                                    if ((z - (ele[ele.Count - 1] + contourinterval) >= 0) || ele[ele.Count - 1] - z >= 0)
                                    //if (z > (ele[ele.Count - 1] + contourinterval) || z < ele[ele.Count - 1])
                                    {
                                        errorpointarrlist.Add(p);
                                        return;
                                    }
                                    else
                                        return;
                                }
                            }

                        }
                        #endregion
                    }

                    //4.上下左、上下右三方闭合
                    #region 上下左、上下右三方闭合
                    else
                    {
                        List<closecontour> closecontourlist = new List<closecontour>();
                        //找出等高线条数大于2的方向进行搜索

                        if (toplist.Count >= 2)
                        {
                            closecontourlist = closecontourcheck(p, 1);
                        }
                        else if (belowlist.Count >= 2)
                        {
                            closecontourlist = closecontourcheck(p, 3);
                        }
                        else if (leftlist.Count >= 2)
                        {
                            closecontourlist = closecontourcheck(p, 4);
                        }
                        else
                            closecontourlist = closecontourcheck(p, 2);


                        if (closecontourlist.Count < 2)
                        {
                            closecontourlist = closecontourcheck(p, 3);
                        }
                        if (closecontourlist.Count < 2)
                        {
                            closecontourlist = closecontourcheck(p, 1);
                        }
                        if (closecontourlist.Count < 2)
                        {
                            closecontourlist = closecontourcheck(p, 4);
                        }
                        if (closecontourlist.Count < 2)
                        {
                            closecontourlist = closecontourcheck(p, 2);
                        }

                        if (closecontourlist.Count >= 2)
                        {
                            compareelevation(p, closecontourlist);
                            return;
                        }
                        else
                        {
                            unrecognize.Add(p);
                        }

                    }
                    #endregion

                }
            }

            //上下方向没有搜索两条等高线,则向左右方向搜索
            if (toplist.Count == 0 || belowlist.Count == 0)
            {
                checkleftright(p);
            }

        }



        /// <summary>
        /// 比较高程点值和该高程点左右等高线高程
        /// </summary>
        public void checkleftright(Contourpoint p)
        {
            double x = Math.Round(p.x, 4, MidpointRounding.AwayFromZero);
            double y = Math.Round(p.y, 4, MidpointRounding.AwayFromZero);
            double z = Math.Round(p.z, 4, MidpointRounding.AwayFromZero);

            List<double> rightlist = calculatevalue(x, y, z, 4);
            List<double> leftlist = calculatevalue(x, y, z, 2);
            //
            if (rightlist.Count > 0 && leftlist.Count > 0)
            {
                //右大左小
                if (rightlist[0] > leftlist[leftlist.Count - 1])
                {
                    if (z > rightlist[0] || z < leftlist[leftlist.Count - 1])
                    {
                        errorpointarrlist.Add(p);
                        return;
                    }
                }
                //右小左大
                if (leftlist[0] > rightlist[rightlist.Count - 1])
                {
                    if (z > leftlist[0] || z < rightlist[rightlist.Count - 1])
                    {
                        errorpointarrlist.Add(p);
                        return;
                    }
                }

                //左右相等，左右上、或者左右下三方闭合
                if ((leftlist[0] == rightlist[0]) || (leftlist[leftlist.Count - 1] == rightlist[rightlist.Count - 1]))
                {
                    List<double> toplist = calculatevalue(x, y, z, 1);
                    List<double> belowlist = calculatevalue(x, y, z, 3);
                    #region
                    //ArrayList closecontourlist = new ArrayList();
                    List<closecontour> closecontourlist = new List<closecontour>();
                    //找出等高线条数大于2的方向进行搜索

                    if (leftlist.Count >= 2)
                    {
                        closecontourlist = closecontourcheck(p, 2);
                    }
                    else if (rightlist.Count >= 2)
                    {
                        closecontourlist = closecontourcheck(p, 4);
                    }
                    else if (toplist.Count >= 2)
                    {
                        closecontourlist = closecontourcheck(p, 1);
                    }
                    else
                        closecontourlist = closecontourcheck(p, 3);


                    if (closecontourlist.Count < 2)
                    {
                        closecontourlist = closecontourcheck(p, 2);
                    }
                    if (closecontourlist.Count < 2)
                    {
                        closecontourlist = closecontourcheck(p, 4);
                    }
                    if (closecontourlist.Count < 2)
                    {
                        closecontourlist = closecontourcheck(p, 1);
                    }
                    if (closecontourlist.Count < 2)
                    {
                        closecontourlist = closecontourcheck(p, 3);
                    }

                    if (closecontourlist.Count >= 2)
                    {
                        compareelevation(p, closecontourlist);
                        return;
                    }
                    else
                    {
                        unrecognize.Add(p);
                        return;
                    }

                    #endregion

                }


            }
            //边缘情况
            else
            {
                List<double> toplist = calculatevalue(x, y, z, 1);
                List<double> belowlist = calculatevalue(x, y, z, 3);
                //ArrayList closecontourlist = new ArrayList();
                List<closecontour> closecontourlist = new List<closecontour>();
                //找出等高线条数大于1的方向进行搜索

                if (leftlist.Count >= 1)
                {
                    closecontourlist = closecontourcheck(p, 2);
                }
                else if (rightlist.Count >= 1)
                {
                    closecontourlist = closecontourcheck(p, 4);
                }
                else if (toplist.Count >= 1)
                {
                    closecontourlist = closecontourcheck(p, 1);
                }
                else
                    closecontourlist = closecontourcheck(p, 3);


                if (closecontourlist.Count < 2)
                {
                    closecontourlist = closecontourcheck(p, 2);
                }
                if (closecontourlist.Count < 2)
                {
                    closecontourlist = closecontourcheck(p, 4);
                }
                if (closecontourlist.Count < 2)
                {
                    closecontourlist = closecontourcheck(p, 1);
                }
                if (closecontourlist.Count < 2)
                {
                    closecontourlist = closecontourcheck(p, 3);
                }

                if (closecontourlist.Count >= 2)
                {
                    compareelevation(p, closecontourlist);
                    return;
                }
                else
                {
                    unrecognize.Add(p);
                    return;
                }



            }

        }


        /// <summary>
        /// 从高程点向上搜索，找到上的等高线，并取得其高程值
        /// </summary>
        /// <param name="direction">搜索方向，上、下、左、右分别为1、3、2、4</param>
        /// <returns>以数组List(double)形式从小到大排序之后返回搜索到的各等高线高程</returns>
        public List<double> calculatevalue(double x, double y, double z, int direction)
        {

            Database database = HostApplicationServices.WorkingDatabase;
            Editor editor = GrxCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor;
            

            Point3dCollection ptcoll = new Point3dCollection();
            List<double> elevation = new List<double>();
            try
            {
                //ViewTableRecord currview = editor.GetCurrentView();
                //currview.CenterPoint = new Point2d(x, y);
                //currview.ViewDirection = new Vector3d(0, 0, 1);
                //currview.Width = windowwidth;
                //currview.Height = windowheight;
                //editor.SetCurrentView(currview);


                double high = y;
                double width = x;
                bool flag = true;
                int times = 0;
                PromptSelectionResult pselectresult;
                Point3d p1, p2;
                while (flag)
                {
                    times++;
                    if (times > looptimes)
                    {
                        leng = temp;
                        break;
                    }

                    leng = leng * times;

                    if (direction == 1)
                    {
                        high += leng;
                        p1 = new Point3d(x, y, 0);
                        p2 = new Point3d(x, high, 0);
                    }
                    else if (direction == 3)
                    {
                        high -= leng;
                        p1 = new Point3d(x, y, 0);
                        p2 = new Point3d(x, high, 0);
                    }
                    else if (direction == 2)
                    {
                        width -= leng;
                        p1 = new Point3d(x, y, 0);
                        p2 = new Point3d(width, y, 0);
                    }
                    else
                    {
                        width += leng;
                        p1 = new Point3d(x, y, 0);
                        p2 = new Point3d(width, y, 0);
                    }
                    ptcoll.Add(p1);
                    ptcoll.Add(p2);


                    string filttext = sqx + "," + jqx;
                    TypedValue[] filterlist = new TypedValue[1]
                    {
                        new TypedValue((int)DxfCode.LayerName,filttext)
                    };
                    //filterelist.SetValue(new TypedValue((int)DxfCode.LayerName, "8110,8120"),0);
                    // 赋值过滤条件给 SelectionFilter 对象
                    SelectionFilter filter = new SelectionFilter(filterlist);


                    dynamic acadApp = Application.AcadApplication;
                    acadApp.ZoomExtents();
                    pselectresult = editor.SelectFence(ptcoll, filter);
                    acadApp.ZoomPrevious();

                    if (pselectresult.Status == PromptStatus.OK)
                    {
                        SelectionSet selectionset = pselectresult.Value;
                        ObjectId[] obj = new ObjectId[selectionset.Count];
                        obj = selectionset.GetObjectIds();

                        DocumentLock doclock = GrxCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.LockDocument();
                        for (int i = 0; i < obj.Length; i++)
                        {
                            Transaction traction = database.TransactionManager.StartTransaction();

                            BlockTable blocktable = traction.GetObject(database.BlockTableId,
                                                 OpenMode.ForWrite) as BlockTable;


                            BlockTableRecord blocktablerecord = traction.GetObject(blocktable[BlockTableRecord.ModelSpace],
                                                            OpenMode.ForWrite) as BlockTableRecord;
                            ObjectId objid = obj[i];
                            Entity entity = (Entity)traction.GetObject(objid, OpenMode.ForRead);

                            if (entity is Polyline)
                            {
                                Polyline pline = (Polyline)entity;
                                double ele = pline.Elevation;
                                elevation.Add(ele);
                                plltemp.Add(pline);
                            }
                            if (entity is Polyline2d)
                            {
                                Polyline2d pline2d = (Polyline2d)entity;
                                double ele = pline2d.Elevation;
                                elevation.Add(ele);
                                pll2dtemp.Add(pline2d);
                            }
                            traction.Commit();
                            traction.Dispose();
                        }
                        doclock.Dispose();
                    }
                    ptcoll.Clear();
                    if (elevation.Count > 0)
                    {
                        leng = temp;
                        flag = false;
                        //Line line = new Line(p1, p2);
                        //line.SetDatabaseDefaults();
                        //blocktablerecord.AppendEntity(line);
                        //traction.AddNewlyCreatedDBObject(line, true);
                    }


                }
                elevation.Sort();
                return elevation;
            }

            catch (GrxCAD.Runtime.Exception ex)
            {
                string str = ex.ToString();
                Application.ShowAlertDialog(str);
                return elevation;

            }
            //finally
            //{
                
            //}

        }


        /// <summary>
        /// 上下方向搜索距离高程点距离最近的等高线的高程和距离
        /// </summary>
        /// <param name="direction">搜索方向，1、2、3、4分别代表上、下、左、右</param>
        /// <returns>以list返回闭合等高线结构体数组</returns>
        public List<closecontour> closecontourcheck(Contourpoint p, int direction)
        {
            double x = p.x;
            double y = p.y;
            double z = p.z;
            Database database = HostApplicationServices.WorkingDatabase;
            Editor editor = GrxCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor;
            List<closecontour> arrlist = new List<closecontour>();

                double high = y;
                double width = x;
                bool flag = true;
                int times = 0;
                PromptSelectionResult pselectresult;
                Point3d p1, p2;

                while (flag)
                {
                    //清空上一次选中的不足两个的对象
                    arrlist.Clear();

                    times++;
                    if (times > looptimes)
                    {
                        leng = temp;
                        break;
                    }

                    leng = leng * times;

                    //向上搜索
                    if (direction == 1)
                    {
                        high += leng;
                        p1 = new Point3d(x, y, 0);
                        p2 = new Point3d(x + 0.001, high, 0);
                    }
                    //向下搜索
                    else if (direction == 3)
                    {
                        high -= leng;
                        p1 = new Point3d(x, y, 0);
                        p2 = new Point3d(x + 0.001, high, 0);
                    }
                    //向左搜索
                    else if (direction == 2)
                    {
                        width -= leng;
                        p1 = new Point3d(x, y, 0);
                        p2 = new Point3d(width, y + 0.001, 0);
                    }
                    //向右搜索
                    else
                    {
                        width += leng;
                        p1 = new Point3d(x, y, 0);
                        p2 = new Point3d(width, y + 0.001, 0);
                    }

                    string filttext = sqx + "," + jqx;
                    TypedValue[] filterlist = new TypedValue[1]
                    {
                        new TypedValue((int)DxfCode.LayerName,filttext)
                    };
                    SelectionFilter filter = new SelectionFilter(filterlist);

                    dynamic acadApp = Application.AcadApplication;
                    acadApp.ZoomExtents();
                    pselectresult = editor.SelectCrossingWindow(p1, p2, filter);
                    acadApp.ZoomPrevious();

                    if (pselectresult.Status == PromptStatus.OK)
                    {
                        SelectionSet selectionset = pselectresult.Value;
                        ObjectId[] obj = new ObjectId[selectionset.Count];
                        obj = selectionset.GetObjectIds();
                        for (int i = 0; i < obj.Length; i++)
                        {
                            if (obj.Length < 2)
                                break;

                            DocumentLock doclock = GrxCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.LockDocument();
                            using (Transaction traction = database.TransactionManager.StartTransaction())
                            {

                                BlockTable blocktable = traction.GetObject(database.BlockTableId,OpenMode.ForWrite) as BlockTable;
                                BlockTableRecord blocktablerecord = traction.GetObject(blocktable[BlockTableRecord.ModelSpace],
                                                                OpenMode.ForWrite) as BlockTableRecord;
                            //else
                            //{
                            //    Line line = new Line(p1, p2);
                            //    line.SetDatabaseDefaults();
                            //    blocktablerecord.AppendEntity(line);
                            //    traction.AddNewlyCreatedDBObject(line, true);
                            //}

                            ObjectId objid = obj[i];
                            Entity entity = (Entity)traction.GetObject(objid, OpenMode.ForRead);

                            if (entity is Polyline)
                            {
                                Polyline pline = (Polyline)entity;

                                Point3d pt = pline.GetClosestPointTo(new Point3d(x, y, z), new Vector3d(0, 0, 1), false);
                                double distance = System.Math.Sqrt((pt.X - x) * (pt.X - x) + (pt.Y - y) * (pt.Y - y));
                                double elev = pline.Elevation;

                                closecontour cc = new closecontour();
                                cc.elevation = elev;
                                cc.interval = distance;
                                arrlist.Add(cc);


                                //Line line = new Line(new Point3d(x, y, z), new Point3d(p.X, p.Y, p.Z));
                                //line.SetDatabaseDefaults();
                                //blocktablerecord.AppendEntity(line);
                                //traction.AddNewlyCreatedDBObject(line, true);


                            }
                            if (entity is Polyline2d)
                            {
                                Polyline2d pline2d = (Polyline2d)entity;

                                Point3d pt = pline2d.GetClosestPointTo(new Point3d(x, y, z), new Vector3d(0, 0, 1), false);
                                double distance = System.Math.Sqrt((pt.X - x) * (pt.X - x) + (pt.Y - y) * (pt.Y - y));
                                double elev = pline2d.Elevation;

                                closecontour cc = new closecontour();
                                cc.elevation = elev;
                                cc.interval = distance;
                                arrlist.Add(cc);



                                //Line line = new Line(new Point3d(x, y, z), new Point3d(p.X, p.Y, p.Z));
                                //line.SetDatabaseDefaults();
                                //blocktablerecord.AppendEntity(line);
                                //traction.AddNewlyCreatedDBObject(line, true);

                            }
                            traction.Commit();
                        }
                            doclock.Dispose();
                    }
                    if (arrlist.Count >= 2)
                    {
                        flag = false;
                    }
                }
            }
                return arrlist;
        }




        /// <summary>
        /// 在闭合等高线处，根据高程点周围等高线高程变化趋势。判断高程点的高程范围
        /// </summary>
        /// <param name="arrlist">高程点周围等高线高程</param>
        public void compareelevation(Contourpoint p, List<closecontour> arrlist)
        {
            double x = p.x;
            double y = p.y;
            double z = p.z;

            //存储高程值计算等高距
            List<double> ele = new List<double>();
            if (arrlist.Count >= 2)
            {

                double minidistance = arrlist[0].interval;
                double contour = arrlist[0].elevation;
                ele.Add(contour);
                for (int i = 1; i < arrlist.Count; i++)
                {
                    if (arrlist[i].interval < minidistance)
                    {
                        minidistance = arrlist[i].interval;
                        contour = arrlist[i].elevation;
                    }
                    ele.Add(arrlist[i].elevation);
                }


                //从小到大排序
                ele.Sort();
                //等高距
                double contourinterval = ele[1] - ele[0];

                //中间高程最小
                if (contour == ele[0])
                {
                    if (z > ele[0] || z < (ele[0] - contourinterval))
                    {
                        errorpointarrlist.Add(p);
                        return;
                    }
                    else
                        return;
                }
                //中间高程最大
                if (contour == ele[ele.Count - 1])
                {
                    if (z > (ele[ele.Count - 1] + contourinterval) || z < ele[ele.Count - 1])
                    {
                        errorpointarrlist.Add(p);
                        return;
                    }
                    else
                        return;
                }
            }
        }






    }
}