<html><head></head><body><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><div><div>Dear All,</div><div><br></div><div>I am exrtuding a 2D polygon using vtkLinearExtrusionFilter, the resulting polydata has misoriented faces on the mesh, meaning that for a closed mesh, faces inside and outside direction is mixed up. (for example when I open the data with meshlab and look at the normals, some are pointing in and some outwards)<br></div><div><br></div><div>How is it possible to orient order of each triangle vertices in a mesh so that there is a consistancy betwwen all faces?</div><div><br></div><div>Thanks for the help.</div><div><br></div></div></div></body></html>