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David DeMarle authored
The basic idea is a uniform means to traverse the various instances that define the visible scene in VTK, inspect their state, and do arbitrary operations (build, synchronize and render thus far) from them. Interactive rendering is the primary use case. Here we traverse and make calls to some external API to draw the scene (e.g. OSPRay). We could potentially write out input files for other packages (e.g. exporters) or do particular transformations with this too.
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