Streaming and AdaptiveParaView do that like so: reader supplies meta information including piece bounding boxes
a filter, vtkVisibilityPrioritizer, is inserted at the end of the pipeline vtkVisibiltyPrioritizer gets the camera/viewport and the bounding boxes (if they are not transformed by the intermediate filters) and rejects pieces that are offscreen so that they are never read/processed at all AdaptiveParaView goes one step further and progressively increases the sampling resolution of each piece some very recent work by Jon Woodring @ LANL goes further and uses the screen resolution to improve the resolution sampling algorithm and works with unstructured data of a particular format Feel free to try/extend and or borrow from those two experimental ParaView applications. David E DeMarle Kitware, Inc. R&D Engineer 28 Corporate Drive Clifton Park, NY 12065-8662 Phone: 518-371-3971 x109 On Wed, Apr 28, 2010 at 11:53 AM, Felipe Bordeu Weldt <[email protected]> wrote: > Hi everybody, > > I have a very large dataset (structuregrid). (1E4 X 1E4 X 1E4 X 3 ) > I will like to know if is possible for the reader (home made reader) to know > the resolution of the screen and the volume of space that the camera is > looking at. > > I will like to generate de data only for the viewable portion of the space > (at the right resolution). > > The idea is to have something like "google hearth". > > Felipe_______________________________________________ > 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 > _______________________________________________ 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
