[vtkusers] AIX and vtkFixedPointVolumeRayCastMapper

[Lisa Avila]

Hi Chris,

Are you sure your data loaded into your program correctly? It sound like a 
missing input for the mapper (which means that wherever you are setting 
this input there is a problem - or before)

Lisa

At 04:43 PM 10/6/2005, Chris Want wrote:

>Hey all,
>
>I have a little volume rendering program that
>works great on linux, but I would like to get it
>running under AIX. When I run it under AIX I
>get the following error
>
>ERROR: In 
>/synapse_scratch_local_many/cwant/vtk/VTK-HEAD/Filtering/vtkDemandDrivenPipeline.cxx, 
>line 724
>vtkStreamingDemandDrivenPipeline (125b5cb30): Input for connection index 0 
>on input port index 0 for algorithm 
>vtkFixedPointVolumeRayCastMapper(125757130) is NULL, but a vtkImageData is 
>required.
>
>I get this error in both HEAD and VTK-5-0, and
>it does not matter if I compile for 32 bit or
>64 bits. I don't ever explicitely set up a
>vtkStreamingDemandDrivenPipeline.
>
>The code connecting the various modules looks
>something like this (some details, such as
>transfer function setup excluded):
>
>#define VTKNEW(A,B) A *B = A::New();
>
>VTKNEW(vtkStructuredPoints, sp);
>VTKNEW(vtkFloatArray, scalars);
>// using my own array of floats
>sp->SetDimensions(x, y, z);
>scalars->SetArray(float_array, x * y * z, 1);
>sp->GetPointData()->SetScalars(scalars);
>sp->Update();
>
>VTKNEW(vtkPiecewiseFunction, opacityTransferFunction);
>VTKNEW(vtkColorTransferFunction, colorTransferFunction);
>VTKNEW(vtkVolumeProperty, volumeProperty);
>volumeProperty->SetColor(colorTransferFunction);
>volumeProperty->SetScalarOpacity(opacityTransferFunction);
>VTKNEW(vtkFixedPointVolumeRayCastMapper, volumeMapper);
>volumeMapper->SetInput(sp);
>VTKNEW(vtkVolume, volume);
>volume->SetMapper(volumeMapper);
>volume->SetProperty(volumeProperty);
>
>Does anybody know why this might run fine on
>linux (both 32-bit and 64-bit) but fail on
>AIX?
>
>Cheers,
>Chris
>
>--
>  ____________________________________________________________________
>( Chris Want                                                         )
>( Research Computing Support                                         )
>( Academic Information and Communication Technologies (AICT)         )
>( University of Alberta                                              )
>( Tel: 1-780-492-9418                                                )
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