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我使用此代码通过 xBim Toolkit 创建 IfcClosedShell。它编译得很好。但是在尝试将此几何图形添加到 IfcProduct 后，文件中没有任何可见的几何图形。

var ifcClosedShell = model.Instances.New<Xbim.Ifc2x3.TopologyResource.IfcClosedShell>(cs =>
{
//Запишем грани
    foreach (var meshTuple in meshList)
    {                            
      var csMesh = m_Meshes[meshTuple.Item1];                            
      for (int i = 0; i < csMesh.Faces; i++)
      {
            var face = model.Instances.New<Xbim.Ifc2x3.TopologyResource.IfcFace>(fc =>
            {
                var polyLoop = model.Instances.New<Xbim.Ifc2x3.TopologyResource.IfcPolyLoop>(pLoop =>
                {
                   var v1 = csMesh.Vertices[csMesh.Index[i * 3]];
                   var v2 = csMesh.Vertices[csMesh.Index[i * 3 + 1]];
                   var v3 = csMesh.Vertices[csMesh.Index[i * 3 + 2]];

                   var pt1 = model.Instances.New<Xbim.Ifc2x3.GeometryResource.IfcCartesianPoint>(p => 
                                              p.SetXYZ(v1.Position.x, v1.Position.y, v1.Position.z));
                   var pt2 = model.Instances.New<Xbim.Ifc2x3.GeometryResource.IfcCartesianPoint>(p => 
                                              p.SetXYZ(v2.Position.x, v2.Position.y, v2.Position.z));
                   var pt3 = model.Instances.New<Xbim.Ifc2x3.GeometryResource.IfcCartesianPoint>(p => 
                                              p.SetXYZ(v3.Position.x, v3.Position.y, v3.Position.z));

                   pLoop.Polygon.Add(pt1); pLoop.Polygon.Add(pt2); pLoop.Polygon.Add(pt3);
               });
               var faceBound = model.Instances.New<Xbim.Ifc2x3.TopologyResource.IfcFaceOuterBound>();
               faceBound.Bound = polyLoop;
               fc.Bounds.Add(faceBound);
               cs.CfsFaces.Add(face);                                                                
            });                 
     }                            
   }
});

谁能告诉我这段代码是否正确？谢谢！

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