[C++ ORD up7]shape元素mesh后,有5个边,但设置的是每个mesh最多四个边

Mesh.dgn老师们,您好,参数如下:

facetOptions->SetIgnoreFaceMaterialAttachments(true);
facetOptions->SetChordTolerance(0.0);
facetOptions->SetAngleTolerance(0.0);
facetOptions->SetMaxEdgeLength(0.0);
facetOptions->SetMaxFacetWidth(0.0);
facetOptions->SetNormalsRequired(false);
facetOptions->SetParamsRequired(false);
facetOptions->SetMaxPerFace(4);
facetOptions->SetCurvedSurfaceMaxPerFace(4);
facetOptions->SetEdgeHiding(true);
facetOptions->SetSmoothTriangleFlowRequired(true);

文件中的Shape元素Mesh后有五个边,但我参数中设置的明明是最多四个边,请老师们看下是什么原因哈。谢谢啦

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