[vtkusers] Problem with VolumeMapper & StructuredPointsReader

[Amy Henderson]

Hi Hari,

No, just including vtkStructuredPointsReader.h is not enough.  In VTK, 
unless it is absolutely necessary, in the header file for a given class we 
only include the header file for its direct superclass.  The rest of the 
header files needed by that class are included in the .cxx file.  This made 
compile times for VTK shorter, but it also means that you will likely have 
to include more files in your own code.

- Amy

At 09:13 AM 1/29/2004 -0500, Hari Sundar wrote:
>Hi Amy,
>
>It works now, but I am a bit confused. Shouldn't including
>vtkStructuredPointsReader be enough ? Doesn't it include
>vtkStructuredPoints ? This particular case is simple enough, but what
>would be the general rule for including headers ?
>
>thanks,
>-Hari
>
>On Thu, 29 Jan 2004, Amy Henderson wrote:
>
> > Hi Hari,
> >
> > Did you include the header file for
> > vtkStructuredPoints?  vtkStructuredPoints is a subclass of vtkImageData,
> > but your code will need to have vtkStructuredPoints.h included to know 
> that.
> >
> > - Amy
> >
> > At 07:53 PM 1/28/2004 -0500, Hari Sundar wrote:
> > >Hi,
> > >
> > >I was trying to do something as simple as converting one of the Python/Tcl
> > >examples into Cxx ... SimpleTextureMape2D.py ... the python example works
> > >...
> > >
> > >this is how my Cxx code (relevant part) looks ...
> > >
> > >vtkStructuredPointsReader *reader = vtkStructuredPointsReader::New();
> > >reader->SetFileName("ironProt.vtk");
> > >
> > >vtkVolumeTextureMapper2D *volumeMapper = vtkVolumeTextureMapper2D::New();
> > >volumeMapper->SetInput(reader->GetOutput());
> > >
> > >when I compile this .. I get this error ,,,
> > >
> > >simple.cxx:104: no matching function for call to
> > >`vtkVolumeTextureMapper2D::
> > >    SetInput(vtkStructuredPoints*)'
> > >/usr/local/src/VTK-4.2/Rendering/vtkVolumeMapper.h:59: candidates are:
> > >virtual
> > >    void vtkVolumeMapper::SetInput(vtkImageData*)
> > >
> > >what did I do wrong ???
> > >
> > >thanks,
> > >-Hari
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