[vtkusers] Some Help for a vtk beginner!

[Ricky Singla]

Hi Adrien,

Have you considered using a non-VTK based STL writer? For example:
http://code.activestate.com/recipes/578246-stl-writer/

Shows how you could write your own in Python. That being said, you could
always contribute some changes to improve the STL writer in VTK.

Hope this helps.

Cheers,

Ricky Singla


On Fri, May 30, 2014 at 10:43 AM, David Gobbi <david.gobbi at gmail.com> wrote:

> Hi Adrien,
>
> I'm fond of python, too, but why do you think this problem
> is specific to python?  It would be the same in any language.
>
>   David
>
> On Fri, May 30, 2014 at 11:31 AM, Adrien Brunet <brunet.adrien at gmail.com>
> wrote:
> > Hi,
> >
> > thanks a ton for this so quick answer!
> > I guess I need to change my tools then, do you have any advice? I'm fond
> of
> > python but I'm ok with any other language...
> >
> > Cheers,
> >
> > Adrien
> >
> >
> > Le 30/05/2014 19:26, David Gobbi a écrit :
> >
> >> 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 !!
> >
> >
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