<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:12pt"><div>Hello, </div><div><br></div><div>Here's my problem, I want to select cells from vtkUnstructuredGrid using vtkHardwareSelector but this does not work.</div><div><br></div><div>I have seen on this link http://www.vtk.org/doc/nightly/html/classvtkHardwareSelector.html#details that "If you need to select other data types, consider using vtkDataSetMapper and turning on it's PassThroughCellIds feature, or using vtkFrustumExtractor".</div><div><br></div><div>But where I enable the PassThroughCellIds feature and how should I use vtkFrustumExtractor.</div><div><br></div><div>I have tried with vtkAreaPicker using vtkDataSetMapper but no result. <br></div><div><br></div><div>Thank you for your help.</div><div><br></div></div></body></html>