[Paraview-developers] Updating view properties

[David Thompson]

Hi all,

Any hints on how one might subclass a ParaView chart view/ 
representation so that a pipeline property can get modified when the  
vtkAxis limits are changed (say, by a user panning or zooming the  
plot)? I want a source which to fetch just the things that might be  
drawn, plus perhaps some padding.

At least one problem is that rendering happens on the client, and thus  
vtkAxis changes aren't available on the servers where the pipeline  
resides. Would overriding vtkPVContextView's Render method to force  
rendering on the servers (even though it would not be used) work?  
ParaView doesn't seem to like updating properties during a client  
render, or even afterwards in a vtkCommand::EndEvent observer attached  
to the renderer; the server process exits with non-zero status when it  
receives a BROADCAST message instead of an RMI message.

	Thanks,
	David