[vtkusers] Converting the SimpleRayCast.tcl example ( VTK/Examples/VolumeRen

[Mathieu Malaterre]

Wagner,

   you need to add:

#include "vtkStructuredPoints.h"

Mathieu

> Hi all,
> 
> I have the same problem asked below. I was searched and founded the same 
> ask, but unforttunately, without answer.
> Can anyone help me? May be that's newbie programmers problem.
> 
> thks
> 
> 
> Hi All,
> 
> Below is my example of  raycasting that I downloaded from the
> internet on the the ironProt.vtk datafile. Some of you will recognise this
> the code below, but I cannot get it to compile on vtk-4.2.2.
> 
> It throws up the error:
> Building object file ironpot.o...
> /home/cs/pmcguinn/visual/project/ironpot.cxx: In function `int main (int,
> char **)':
> /home/cs/pmcguinn/visual/project/ironpot.cxx:152: no matching function for
> call to
> `vtkVolumeRayCastMapper::SetInput (vtkStructuredPoints *)'
> /usr/local/include/vtk/vtkVolumeMapper.h:59: candidates are: void
> vtkVolumeMapper::SetInput
> (vtkImageData *)
> 
> I have spent the last two days playing around with the code modifying it,
> using vtkVolumeMapper, converting structuredpoints into Imagedata,
> but nothing seems to get it to work.
> Has anyone got this code to work using vtk 4.2.2?
> 
> Thanks.
> Paul.
> 
> 
> #include "vtkRenderer.h"
>          #include "vtkRenderWindow.h"
>          #include "vtkRenderWindowInteractor.h"
>          #include "vtkStructuredPointsReader.h"
>          #include "vtkPiecewiseFunction.h"
>          #include "vtkVolumeProperty.h"
>          #include "vtkVolumeRayCastCompositeFunction.h"
>          #include "vtkVolumeRayCastMapper.h"
>          #include "vtkVolume.h"
>          #include "vtkColorTransferFunction.h"
>          #include "vtkCamera.h"
> 
> 
>          int main( int argc, char *argv[] )
>          {
>            vtkRenderer               *renderer   = vtkRenderer::New();
>            vtkRenderWindow           *renWindow  = vtkRenderWindow::New();
>            vtkRenderWindowInteractor *interactor =
> vtkRenderWindowInteractor::New();
>            vtkStructuredPointsReader *reader =
> vtkStructuredPointsReader::New();
>            vtkPiecewiseFunction *opacity = vtkPiecewiseFunction::New();
>            vtkColorTransferFunction *color =
> vtkColorTransferFunction::New();
>            vtkVolumeProperty *volumeProperty = vtkVolumeProperty::New();
>            vtkVolumeRayCastCompositeFunction *compositeFunction =
>                             vtkVolumeRayCastCompositeFunction::New();
>            vtkVolumeRayCastMapper *volumeMapper =
> vtkVolumeRayCastMapper::New();
>            vtkVolume *volume = vtkVolume::New();
> 
>            renWindow->SetSize(400,400);
> 
> 
> reader->SetFileName("ironProt.vtk");
>            reader->Update();
> 
> 
> 
>            opacity->AddSegment(0, 0.0, 255, 0.5);
>            color->AddRGBPoint(64, 1.0, 0.0, 0.0);
>            color->AddRGBPoint(128, 1.0, 1.0, 0.0);
>            color->AddRGBPoint(196, 0.0, 1.0, 1.0);
> 
>            volumeProperty->SetColor(color);
>            volumeProperty->SetScalarOpacity(opacity);
>            volumeProperty->SetInterpolationTypeToLinear();
>            volumeProperty->ShadeOn();
> 
>            volumeMapper->SetInput(reader->GetOutput());
>            volumeMapper->SetVolumeRayCastFunction(compositeFunction);
> 
>            volume->SetMapper(volumeMapper);
>            volume->SetProperty(volumeProperty);
> 
>            renderer->SetBackground(0.2, 0.2, 0.8);
>            renderer->AddVolume(volume);
>            renderer->GetActiveCamera()->Azimuth(20.0);
>            renderer->GetActiveCamera()->Dolly(1.60);
>            renderer->ResetCameraClippingRange();
> 
>            interactor->SetRenderWindow(renWindow);
>            renWindow->AddRenderer(renderer);
>            renWindow->Render();
>            interactor->Start();
> 
>            renderer->Delete();
>            renWindow->Delete();
>            interactor->Delete();
>            reader->Delete();
>            opacity->Delete();
>            color->Delete();
>            volumeProperty->Delete();
>            compositeFunction->Delete();
>            volumeMapper->Delete();
>            volume->Delete();
> 
>            return 0;
> 
>          }
> 
> 
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