Hello,<br><br>I have an interactor derived from vtkInteractorTrackballCamera. I am interested in changing the dolly behavior so that instead of moving the camera some fraction of the distance to the focal point, the camera is moved a constant distance with every call to Dolly(). As a test, I copied the Dolly(double) function from vtkInteractorTrackballCamera to my derived class as the Dolly(void) and replaced "factor" with 10.0. This did not change the behavior. I also tried changing the call to the camera's Dolly() function to camera->Dolly(10.0) and camera(camera->GetDistance() * 10.0) with no avail. Am I going to have to create my own subclass of vtkCamera? It seems that there has to be an easier way. Any ideas?<br>
<br>Thanks,<br><br>Kerry<br>