Hi, I'm now playing around with creating some filters which use PkdTrees internally, mainly for their point locator capabilities. As the filters I'm interested in creating work best with spatial locality, I want to execute D3 if running in parallel and it has not previously been executed. I had four primary questions.
1. How do I tell if D3 has been executed previously in the pipeline? 2. It seems that I must first build a locator from points before calling e.g. FindClosestNPoints even though D3 takes in the same data set as input to build its KdTree. Does this mean BuildLocatorFromPoints(input) builds a different sort (and, in turn, new) KdTree than D3->SetInput(input) .... D3->Update()? Should I not even bother trying to get the KdTree from D3 and simply create a new one? 3. If I build my own PkDtree is this accomplished by creating a new one on each process, and for my locator calling BuildLocatorFromPoints(input) on each process, or should I do something special on e.g. the root process? 4. If I run D3 and/or build a KdTree within my filter it would be nice to save this for possible use by filters downstream. I see that D3 has a SetRetainKdTree, which may be what I am looking for in that regard, but if I build my own KdTree with associated locator is there a way to retain it/access it downstream? Christine _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
