[vtkusers] Volume rendering of vtkStructuredGrid

[Xianjin Yang]

Hi vtkusers,

I am seeking a better way for volume rendering of a structured grid. My
pipleline outlined below seems too slow.

Assemble vtkPolyData from scratches (x, y, z, points, cells and scalars)
vtkShepardsMethod for conversion into vtkImageData
vtkImageCast to convert scalar type from double to UnsignedShort
vtkVolumeRayCastMapper or vtkVolumeTextureMapper2D
vtkVolume

The performace would depend on the grid size set with vtkShepardsMethod.
What can I do to speed it up? Are there any alternatives or better ways to
volume-render a vtkStructuredGrid? 

Thanks a bunch.

Yang


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