I would like to volume render RGBA data derived from digital photographs of serial slices through an object. I found reference on the vtkusers list of this being supported in vtk (vtkFixedPointVolumeRayCastMapper or vtkVolumeTextureMapper3D). I created a legacy vtk file with data represented as STRUCTURED_POINTS. Here is the top of the file:
# vtk DataFile Version 2.0 TreeVol ASCII DATASET STRUCTURED_POINTS DIMENSIONS 1023 1023 10 SPACING 1 1 10 ORIGIN 0 0 0 POINT_DATA 10465290 SCALARS DiscRGBA unsigned_char 4 LOOKUP_TABLE default 255 254 236 0 255 254 236 0 255 254 236 0 255 254 236 0 255 254 236 0 255 254 236 0 255 254 236 0 255 254 236 0 255 254 236 0 255 254 236 0 The file loads without errors, selecting Representation = Slice, Map Scalars = Off shows a single slice in correct RGBA. But when I select Representation = Volume I get the following error: Cannot volume render since no point (or cell) data available. What am I doing wrong? Is volume rendering of RGBA not supported in Paraview? Although I see the Volume Mapper box (greyed out) says Fixed point which indicates vtkFixedPointVolumeRayCastMapper which I understood would handle RGBA. Or is my file format wrong? regards, Dave Disclaimer: This e-mail and any attachments may contain information which is confidential or subject to copyright. If you receive this e-mail in error, please delete it. Scion does not accept responsibility for anything in this e-mail which is not provided in the course of Scion's usual business or for any computer virus, data corruption, interference or delay arising from this e-mail. _______________________________________________ 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
