[vtkusers] Syncing Render Windows -- vtkRenderWindowInteractor slows down interaction rate.

[pjtr hahn]

Sorry, my fault. There is no problem. It was some of my own classes
that slowed down interaction.

regards,

Peter



2008/10/27 pjtr hahn <pjtr.hahn at googlemail.com>:
> Hi,
>
> I try to sync the camera interaction in two different windows. While
> trying this I've noticed strange behaviour of vtkRenderWindow and
> vtkRenderWindowInteractor I don't understand.
>
> 1.) When I create two different render windows + interactors without
> my own syncing stuff -- just plain VTK -- then, the first time I try
> to interact with one of the windows their is a large lag in response
> time.
> After the first lag the window is responsive as usual until I change
> to the other window and visa versa. It seams something complicated
> get's initialized each time.
>
> --  there is a huge lag then changing focus of interaction from one
> window to another.
>
> 2.) When I enable my sync mechanism to sync camera movement of both
> windows I get that lag in every frame of course.
>
> 3.) Since my sync calls call vtkRenderWindow::Render() and not
> vtkRenderWindowInteractor::Render() I tried to omit the
> vtkRenderWindowInteractor of the second Window.
> This is working fine.
>
> I don't understand the connection of vtkRenderWindowInteractor and
> vtkRenderWindow in this case. Why is the Interactor slowing down calls
> to vtkRenderWindow::Render()?
>
> Any ideas?
>
> regards,
>
> Peter
>