[Paraview] Automatically updating time variable dataset

[corinna reuter]

A question to the specialists:
Can Paraview refresh its view automatically when a dataset updates its
state?

A plugin starts a background thread that calculates new dataset values
periodically. Each time a calculation step is finished, all filters and
views connected to the generated dataset should be updated. (Something
similar is done in a live catalyst connection. But catalyst has a serious
drawback for large datasets. It runs in a separate process, so that the
datasets cannot be in shared memory, but have to be transferred, requiring
redundant storage space and wasted network bandwidth.) Although paraview is
said to be not thread safe, it should't be problematic as long as access to
VTK classes is limited to the main thread. The difficult question is, how
can paraview be notified that a plugin has updated its output while the
main thread only waits for GUI or network events when idle?

Any ideas or recommendations?
Conny
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