Use vtkDataSetAttributes::Get/SetNormals() to access the normals. Likewise use Get/SetTCoords() to access the texture coordinates.
od = self.GetOutput() id = self.GetInput() od.GetPointData().ShallowCopy(id.GetPointData()) innorm = od.GetPointData().GetNormals() onorm = innorm.NewInstance() onorm.DeepCopy(innorm) onorm.SetName("NewNormals") for x in range(0, onorm.GetNumberOfTuples()): a,b,c = onorm.GetTuple(x) print a,b,c a = -1*a b = -1*b c = -1*c onorm.SetTuple3(x, a,b,c) od.GetPointData().SetNormals(onorm) David E DeMarle Kitware, Inc. R&D Engineer 21 Corporate Drive Clifton Park, NY 12065-8662 Phone: 518-881-4909 On Tue, Jun 26, 2012 at 2:09 PM, Kathleen Schwarz <kas...@cornell.edu> wrote: > Hello, > I am trying to transform a surface using a programmable filter, and I am > unable to get the output to use the normals. Even the most basic filter: > > output.PointData.append(inputs[0].PointData['Normals'], 'Normals') > > results in the mesh being copied but the normals not being used. The > normals appear as a Data Array, but are not used in rendering. However, > using the copy arrays option in the properties of the programmable filter > lead to the normals being used correctly. > > What I would like to do is to apply an affine transformation on the point > positions and normals (and visualize contours of a scalar field on a > uniform, nonorthogonal parallelepiped grid), so I can't just use the copy > arrays option. > > Thanks in advance! > -Katie > > _______________________________________________ > Powered by www.kitware.com > > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html > > Please keep messages on-topic and check the ParaView Wiki at: > http://paraview.org/Wiki/ParaView > > Follow this link to subscribe/unsubscribe: > http://www.paraview.org/mailman/listinfo/paraview > _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview