[vtkusers] General file reader

[Bill Lorensen]

Gerrick,

That approach will certainly work. My appraoch was to allow dynamic
discovery, but at the time it proved to be too much effort.

Bill

On Mon, Feb 11, 2013 at 8:50 AM, Gerrick Bivins
<Gerrick.Bivins at halliburton.com> wrote:
> I've use code like this (java) to read "general vtk" files (NOTE: this attempts to always return multiblock output):
>
>      vtkXMLFileReadTester vtkXMLFormatFileChecker = new vtkXMLFileReadTester();
>
>         vtkXMLFormatFileChecker.SetFileName(fileName);
>
>         if (vtkXMLFormatFileChecker.TestReadFile() > 0) {
>             Logger.getLogger(getClass().getName()).log(Level.INFO, "[{0}] is of type [{1}]",
>                     new Object[] { fileName, vtkXMLFormatFileChecker.GetFileDataType() });
>
>             vtkXMLGenericDataObjectReader vtkXMLFileReader = new vtkXMLGenericDataObjectReader();
>
>             vtkXMLFileReader.SetFileName(fileName);
>             vtkXMLFileReader.Update();
>
>             if (vtkXMLFileReader.GetOutput() instanceof vtkMultiBlockDataSet) {
>                 return vtkXMLFileReader;
>             } else {
>                 vtkMultiBlockDataGroupFilter makeMultiblock = new vtkMultiBlockDataGroupFilter();
>
>                 makeMultiblock.SetInputConnection(vtkXMLFileReader.GetOutputPort());
>
>                 return makeMultiblock;
>             }
>         } else // legacy format
>         {
>             vtkGenericDataObjectReader legacyVTKFileReader = new vtkGenericDataObjectReader();
>
>             legacyVTKFileReader.SetFileName(fileName);
>             legacyVTKFileReader.Update();
>
>             vtkMultiBlockDataGroupFilter makeMultiblock = new vtkMultiBlockDataGroupFilter();
>
>             makeMultiblock.SetInput(legacyVTKFileReader.GetOutput());
>
>             return makeMultiblock;
>         }
>
> Gerrick
> -----Original Message-----
> From: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] On Behalf Of Bill Lorensen
> Sent: Saturday, February 09, 2013 9:56 AM
> To: Sunrise
> Cc: vtkusers at vtk.org
> Subject: Re: [vtkusers] General file reader
>
> There is not for non-image data. I had started on a general polydata reader about 6 months ago, but put it on the back burner.
>
> On Sat, Feb 9, 2013 at 12:08 AM, Sunrise <helios.corona at gmail.com> wrote:
>> I would like to read different file formats as input to my class.
>> Previously, I wrote a custom reader that used different readers inside
>> it, based on parsing user input and extracting the file extension,
>> then switching to appropriate reader. For example
>> vtkUnstructuredgridReader for *.vtk input and vtkXMLUnstructuredGridReader for *.vtu input.
>>
>> I would like to ask, is there any method that I can leverage reading
>> almost all supported formats (specifically for unstructured grid data,
>> such as vtk, vtu, ex2, ...) without parsing user input?
>>
>> Thanks
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>
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