[vtkusers] Some Help for a vtk beginner!

[David Gobbi]

Hi Adrien,

This is the first time that I've heard this question.  The answer is that the
vtkSTLWriter is not sophisticated enough to write files with multiple solids.
This is a bit strange, because the vtkSTLReader is capable of labeling the
solids when it reads them.

  David


On Fri, May 30, 2014 at 11:06 AM, Adrien Brunet <brunet.adrien at gmail.com> wrote:
> Hi guys,
>
> I hope this has not been already asked but the archives are not really handy
> to explore...
>
> I'm converting stl files from ascii to binary and from binary to ascii with
> vtk. I use the following code:
>
> #!/usr/bin/env python
>
> import vtk
>
>
> def convert_stl2ascii(path):
>     reader = vtk.vtkSTLReader()
>
>     reader.SetFileName(path)
>     reader.Update()
>     write = vtk.vtkSTLWriter()
>     write.SetFileTypeToASCII()
>
>     write.SetInput(reader.GetOutput())
>     write.SetFileName(path)
>     write.Write()
>
>
> def convert_stl2binary(path):
>     reader = vtk.vtkSTLReader()
>
>     reader.SetFileName(path)
>     reader.Update()
>     write = vtk.vtkSTLWriter()
>     write.SetFileTypeToBinary()
>
>     write.SetFileName('_binary.stl'.join(path.split('.stl')))
>     write.SetInput(reader.GetOutput())
>     write.Write()
>
>
>
> It does work BUT, Let's say I have a ascii stl file like this:
>
> solid first_name
>     [...]
> endsolid
> solid second_name
>     [...]
> endsolid
>
> I can convert it to a binary file but when I try to convert it back to
> ascii, I get something like:
>
> solid ascii
>     [...]
> endsolid
>
> What should I do to keep the Region name first_name and second_name and to
> avoid that several different regions to be merged in only one region?
>
> Cheers !!