[Paraview-developers] Updating view properties

[David Thompson]

>> No. Interaction (panning/zooming) on the client does not result in  
>> Render()
>> being called on either the client or the servers.
>
> Argh..that's what I feared. Okay next step. So you have a
> vtkPVContextView subclass right?

Yup.

> In that subclass, add an observer to the vtkContextView's EndEvent  
> (or whoever is firing that event). In the callback, call:
>   vtkMultiProcessStream stream;
>  stream << this->Identifier << static_cast<int>(blockindex);
>  this->SynchronizedWindows->TriggerRMI(stream, SOME_TAG);
> This should result in the server-side processes reporting that an un- 
> handled RMI was invoked.

Not quite. When I add this (switching out blockindex for a couple  
doubles of interest and SOME_TAG for my favorite random integer  
constant), it gets an error which would result in a "Could not receive  
RMI trigger message" message within  
vtkMultiProcessController::ProcessRMIs except that reportErrors is  
hardwired to 0 by the caller.

Interestingly, if I force the client not to call TriggerRMI for the  
first few times (until the first rendering is done), then I do get the  
message about the unhandled RMI each time the client renders the  
chart. So it seems like the first calls on the client are occurring in  
a bad spot.

> If this works correctly, then you can add code to handle this RMI on  
> the server-side and in that you can change the ivar on your  
> vtkPVContextView subclass.

I think I see how to do this... I just want to get the point where the  
server doesn't jump out of the car while we're turning a corner.

	Thanks,
	David