使用自己的描述添加/修改特征线集

' Create the polyline basis for the breakline.
Dim o3DPoly as Acad3DPolyline
Dim dPoints(0 To 8) As Double
dPoints(0) = 1200: dPoints(1) = 1200: dPoints(2) = 150
dPoints(3) = 2000: dPoints(4) = 3000: dPoints(5) = 120
dPoints(6) = 3000: dPoints(7) = 2000: dPoints(8) = 100
Set o3DPoly = oAeccDocument.Database.ModelSpace _ 
  .Add3DPoly(dPoints)
o3DPoly.Closed = False
Dim oBreakline As AeccSurfaceBreakline
Dim vBLines As Variant
' This has to be an array, even if we only have one entity.
Dim oEntityArray(0) As AcadEntity
Set oEntityArray(0) = oAeccDocument.Database.ModelSpace _
  .Add3DPoly(dPoints)
Set oBreakline = oTinSurface.Breaklines.AddStandardBreakline _
  (oEntityArray, "Sample Standard Break" , 1#)

Tinsurface.BreaklinesDefinition.AddStandardBreaklines(ObjIdColl, 10, 5, 5, 0);

        public static IList
 ReadBreaklineSet()
        {
            IList
 m_BreaklineList = new List
();
            Document acadDoc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
            using (Transaction tr = acadDoc.TransactionManager.StartTransaction())
            {
                foreach (ObjectId surfId in CivilApplication.ActiveDocument.GetSurfaceIds())
                {
                    TinSurface surf = tr.GetObject(surfId, OpenMode.ForRead) as TinSurface;
                    if (surf != null)
                    {
                        SurfaceDefinitionBreaklines brkdefs = surf.BreaklinesDefinition;
                        for (int i = 0; i 
    {
        public SurfaceBreakline this[int index] { get; }
        public SurfaceBreaklineType BreaklineType { get; }
        public int Count { get; }
        public string Description { get; set; }
        public double MaximumDistance { get; }
        public double MidOrdinateDistance { get; }
        public double WeedingAngle { get; }
        public double WeedingDistance { get; }
        public virtual IEnumerator GetEnumerator();
        public IEnumerator GetObjectEnumerator();
        public ObjectIdCollection InsertIntoDrawing();
    }

        public void AddBreaklinesBySset()
        {
            Surface surf = new Surface();
            surf.SelectTinSurface();
            ObjectIdCollection coll = Selection.SsetFilter("Layer1", "LWPOLYLINE");
            surf.Tinsurface.BreaklinesDefinition.AddStandardBreaklines(coll, 10, 5, 5, 0);
            SurfaceDefinitionBreaklines brkdefs = surf.Tinsurface.BreaklinesDefinition;
            SurfaceOperationAddBreakline brklines = brkdefs[0];
            brklines.Description = "Test";
        }

brkdefs[brkdefs.Count - 1].Description = "Test";