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

using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.ApplicationServices;



namespace T_cad
{
    class OldCls2
    {

        [CommandMethod("CTK")]
        public void ctk()
        {

            Document document = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
            Database database = HostApplicationServices.WorkingDatabase;



            using (Transaction traction = database.TransactionManager.StartTransaction())
            {

                DocumentLock documentlock = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.LockDocument();


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

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


                // 获得当前文档的编辑器  
                Editor editor = Autodesk.AutoCAD.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, "VC"), 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);


                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++)
                    {
                        ObjectId objid = obj[i];
                        Entity entity = (Entity)traction.GetObject(objid, OpenMode.ForRead);
                        Polyline line = entity as Polyline;

                        Point3dCollection coll = new Point3dCollection();
                        line.GetStretchPoints(coll);

                        double max_x = coll[0].X;
                        double max_y = coll[0].Y;
                        double min_x = coll[0].X;
                        double min_y = coll[0].Y;


                        for (int j = 1; j < coll.Count; j++)
                        {
                            if (coll[j].X > max_x)
                            {
                                max_x = coll[j].X;
                            }

                            if (coll[j].Y > max_y)
                            {
                                max_y = coll[j].Y;
                            }

                            if (coll[j].X < min_x)
                            {
                                min_x = coll[j].X;
                            }

                            if (coll[j].Y < min_y)
                            {
                                min_y = coll[j].Y;
                            }

                        }


                        Point3dCollection coll2 = new Point3dCollection();

                        Point3d p1 = new Point3d(min_x, min_y, 0);
                        Point3d p2 = new Point3d(min_x, max_y, 0);

                        Point3d p3 = new Point3d(max_x, max_y, 0);
                        Point3d p4 = new Point3d(max_x, min_y, 0);

                        coll2.Add(p1);
                        coll2.Add(p2);
                        coll2.Add(p3);
                        coll2.Add(p4);

                        Polyline2d pline = new Polyline2d(Poly2dType.SimplePoly, coll2, 0, true, 0, 0, null);
                        pline.Layer = "qtk";

                        pline.SetDatabaseDefaults();
                        blocktablerecord.AppendEntity(pline);
                        traction.AddNewlyCreatedDBObject(pline, true);
                    }

                }



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



        }

    }
}