[vtkusers] problem to the coordinatensystem

[guoyanmin]

hallo everyone, ich have the question, i have the surface and image, i want to cut a part of image with surface, i use this :


            (vtkLinearTransform)  transform = surface->GetTimeSlicedGeometry()->GetGeometry3D(0)->GetVtkTransform();
            (vtkTransformPolyDataFilter)  transformFilter->SetInput(surface->GetVtkPolyData());
              transformFilter->SetTransform(transform);
              transformFilter->Update();             

        
              dataToStencil->SetInput( transformFilter->GetOutput());
              stencilData = dataToStencil->GetOutput();
              stencil->SetStencil(stencilData);
              stencil->SetBackgroundValue( 0 );
              stencil->ReverseStencilOff();

              vtkImageData *vtkimage =(mitkImage) img->GetVtkImageData();
              stencil->SetInput( vtkimage );
              stencil->Update();
              vtkimage = stencil->GetOutput();

i can cut the image with surface, but this neu cutted image is not in good position, i want to show this neu cutted image looked like original image, that means in the mittel,but not at the corner of all. how can i do that?

best regards




 
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