[CommandMethod("TestLoftObjekt", CommandFlags.Modal)]
		public static void TestLoftObjekt()
		{
			Editor editor = AcadApp.DocumentManager.MdiActiveDocument.Editor;
			Database db = AcadApp.DocumentManager.MdiActiveDocument.Database;
			TransMan transMgr = db.TransactionManager;

			using (Transaction trans = db.TransactionManager.StartTransaction())
			{
				PromptEntityOptions prOpt = new PromptEntityOptions("\nPick circle");
				prOpt.SetRejectMessage("\nSelect a circle.");
				prOpt.AddAllowedClass(typeof(Circle), false);

				PromptEntityResult pr = editor.GetEntity(prOpt);
				if (pr.Status != PromptStatus.OK)
				{
					trans.Abort();
					return;
				}
				Circle Circle1 = (Circle)trans.GetObject(pr.ObjectId, OpenMode.ForWrite);

				pr = editor.GetEntity(prOpt);
				if (pr.Status != PromptStatus.OK)
				{
					trans.Abort();
					return;
				}
				Circle Circle2 = (Circle)trans.GetObject(pr.ObjectId, OpenMode.ForWrite);

				Vector3d MoveVec = Circle2.Center - Circle1.Center;
				MoveVec *= 3;
				Matrix3d MoveC = Matrix3d.Displacement(MoveVec);
				Circle2.TransformBy(MoveC);

				CircularArc3d cirArc1 = new CircularArc3d(Circle1.Center, Circle1.Normal, Circle1.Radius);
				CircularArc3d cirArc2 = new CircularArc3d(Circle2.Center, Circle2.Normal, Circle2.Radius);

				int numPoints = 5;
				Point3d[] sps1 = cirArc1.GetSamplePoints(numPoints);
				Point3d[] sps2 = cirArc2.GetSamplePoints(numPoints);

				LoftedSurface loftedSurface = new LoftedSurface();
				LoftOptions LO = new LoftOptions();

				Entity[] crossSections = { Circle1, Circle2 };

				Entity[] guideCurves = new Entity[numPoints-1];
				for (int i = 0; i < numPoints-1; i++)
					guideCurves.SetValue(new Line(sps1[i], sps2[i]), i);

				loftedSurface.CreateLoftedSurface(crossSections, guideCurves, null, LO);

				BlockTableRecord btr = (BlockTableRecord)trans.GetObject(Circle1.OwnerId, OpenMode.ForWrite, false);
				ObjectId obj = btr.AppendEntity(loftedSurface);
				trans.AddNewlyCreatedDBObject(loftedSurface, true);

				trans.Commit();
			}
		}