大佬们，怎么提取stl文件保存的支气管模型中心线啊

hao zuo

得到的vtkPolyData中心线，用stlWriter保存即可
vtkSmartPointer<vtkSTLWriter> stlWriter = vtkSmartPointer<vtkSTLWriter>::New();
stlWriter->SetFileName(filename);
stlWriter->SetInputConnection(centerline->GetOutputPort());
stlWriter->Write();
stlWriter->Update();