<html><body><div style="color:#000; background-color:#fff; font-family:lucida console, sans-serif;font-size:10pt"><div>Hello, <br></div><div><br></div><div>I am trying to change the position and orientation of a vtkimageplanewidget in accordance with the mouse dragging of another vtkActor ( dragged in trackballactor style). The tests below did not work. In other words, can i change the normal and the center of cut-plane of the imageplanewidget by manuplating another actor in tracballactor style by mouse. My vtk is 5.2. <br></div><div><br></div><div>m_pVtkImagePlanWidget->GetProp3D()->SetUserMatrix(this->m_pVtkActor->GetMatrix());</div><div>m_pVtkImagePlanWidget->GetProp3D()->SetUserMatrix(this->m_pVtkActor->GetUserMatrix());</div><div><br></div><div>thank you,</div><div>mehmet<br></div></div></body></html>