AutoCAD Geometry库中的CurveCurveIntersector3d获取的交点坐标不正确

        /// <summary>
        /// 2022年10月17日 Author:Myzw
        /// 
        /// </summary>
        [CommandMethod("Test14")]
        public void C_Test14()
        {
            var per1 = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor.GetEntity("\nPick Polyline 1");
            if (per1.Status != PromptStatus.OK) return;
            var per2 = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor.GetEntity("\nPick Polyline 2");
            if (per2.Status != PromptStatus.OK) return;
            using (Transaction tr = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.TransactionManager.StartTransaction())
            {
                BlockTable bt = (BlockTable)tr.GetObject(Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Database.BlockTableId, OpenMode.ForRead, false);
                BlockTableRecord btr = (BlockTableRecord)tr.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite, false);
                var cur1 = (per1.ObjectId.GetObject(OpenMode.ForRead) as Curve).GetGeCurve();
                var cur2 = (per2.ObjectId.GetObject(OpenMode.ForRead) as Curve).GetGeCurve();
                var cci = new CurveCurveIntersector3d(cur1, cur2, Vector3d.ZAxis);
                for (int i = 0; i < cci.NumberOfIntersectionPoints ; i++)
                {
                    var pt = new DBPoint(cci.GetPointOnCurve1(i).Point);
                    btr.AppendEntity(pt);
                    tr.AddNewlyCreatedDBObject(pt, true);
                }
                tr.Commit();
            }
        }