[vtkusers] What Is Wrong With My VTK Pipeline ?

[JohnMark]

thank you for your suggestion , Amy ,
   but from the user guide , we can see there is a subclass of vtkUnstructuredGridVolumeMapper : 
vtkHAVSVolumeMapper , and it can work for vtkImageData , although it would need some help from the 
hardware . so , should I think that vtkUnstructuredGridVolumeMapper can not take vtkImageData as input 
ports , even though you make some transformation ? 
    or in other words , when I do my volume rendering , and my input ports are the objects of 
vtkImageData , I should use the subclasses of vtkVolumeMapper instead of 
vtkUnstructuredGridVolumeMapper ? is there any method to do volume rendering with vtkImageData ( or 
the readers of .dcm images )and the subclasses of vtkUnstructuredGridVolumeMapper ? what should I do 
now ?
 
    thank you for your help again !
    
    Mark
    



> Date: Wed, 19 Sep 2007 08:14:53 -0400> From: amy.squillacote at kitware.com> To: zhaojunxp at hotmail.com> CC: vtkusers at vtk.org> Subject: Re: [vtkusers] What Is Wrong With My VTK Pipeline ?> > Hi Mark,> > vtkImageMandelbrotSource does not take any inputs, regardless of the> dataset type of the input. Looking in the constructor for that class,> the last line is the following.> > this->SetNumberOfInputPorts(0);> > That means that even though one of the superclasses of> vtkImageMandelbrotSource (vtkAlgorithm, specifically) has a> SetInputConnection method, it is ignored by the class you're using.> > If you want to volume render the dataset output from vtkVolume16Reader,> use one of the subclasses of vtkVolumeMapper, not> vtkUnstructuredGridVolumeMapper. The subclasses of vtkVolumeMapper work> for vtkImageData, which the output of vtkVolume16Reader is.> > - Amy> 
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