[vtkusers] LEgacy VTK File Formats

[Dominik Szczerba]

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yes, you have to, otherwise XML formats are not that difficult to
produce by your code.

- --ds

Randall Hand wrote:
> I'm working with some legacy VTK File Format stuff, writing it from
> Fortran Code.  I'm trying to write it in Binary (for Performance & Space
> reasons), but I've run into a s urprising hiccup.
> 
> The file-formats.pdf file shown on the VTK.org website says that the
> file readers can handle reading either BigEndian or LittleEndian data. 
> In reality, however, it seems that (on my X86 Little-Endian Machine,
> which is currently the predominant architecture in the Big vs Little
> Endian Architectures, right) I still have to manually byte-swap
> everything before I write it because in the readers there is a
> hard-coded call to vtkByteSwap that I seem unable to bypass.
> 
> For a test I simply wrote out (in C, with fprintf's and fwrite's) a
> simple 3-point, 1-cell Polygonal Dataset in Binary.  It segfaults
> Paraview & VTK every time I try to read it. If I byte-swap all my ints &
> floats (Point locations, point ID's, scalar data) then it works.
> 
> So I have to byte-swap all my data to write it out, then wait for VTK to
> byte-swap it again when it reads it in?  Shouldn't this be an "option",
> and not a "requirement" ?  Or have I missed something..
> 
> -- 
> ----------------------------------------
> Randall Hand
> Visualization Scientist
> ERDC MSRC-ITL
> 
> 
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