the points are being added to *vtkPoints* collection as* double*. I think *double* should hold those points? -- View this message in context: http://vtk.1045678.n5.nabble.com/VTK-7-1-issue-with-vtkPoints-while-rendering-tp5742466p5742478.html Sent from the VTK - Dev mailing list archive at Nabble.com.