[vtkusers] vtkVolume vtkActor

[Jochen K.]

Hi Antonio,

I've written a compilable example, which demonstrates converting an
vtkImageData object to vtkPolyData is working properly:


#include <vtkVersion.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkInteractorStyleUser.h>
#include <vtkSmartPointer.h>
#include "vtkVolume16Reader.h"
#include "vtkImageData.h"
#include "vtkImageDataGeometryFilter.h"

int main(int, char *[])
{

  vtkSmartPointer<vtkVolume16Reader> v16 =
vtkSmartPointer<vtkVolume16Reader>::New();
  v16->SetDataDimensions(64, 64); 

  v16->GetOutput()->SetOrigin(0.0, 0.0, 0.0);
  v16->SetDataByteOrderToLittleEndian();
  v16->SetFilePrefix("c:\\vtk\\vtkdata-5.8.0\\Data\\headsq\\quarter");
  v16->SetImageRange(1, 93);
  v16->SetDataSpacing(3.2, 3.2, 1.5);
  v16->Update();


  vtkImageData* imageData = v16->GetOutput();
  vtkSmartPointer<vtkImageDataGeometryFilter> filter =
vtkSmartPointer<vtkImageDataGeometryFilter>::New();
  filter->SetInput(imageData);
  vtkSmartPointer<vtkPolyDataMapper> polyDataMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
  polyDataMapper->SetInputConnection(filter->GetOutputPort());
  vtkSmartPointer<vtkActor> polyActor =
vtkSmartPointer<vtkActor>::New();
  polyActor->SetMapper(polyDataMapper);
  // get a reference to the renderwindow of our renderWindowControl1

  // Visualize
  vtkSmartPointer<vtkRenderer> renderer =
    vtkSmartPointer<vtkRenderer>::New();
  vtkSmartPointer<vtkRenderWindow> renderWindow =
    vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->AddRenderer(renderer);
  vtkSmartPointer<vtkRenderWindowInteractor> interactor =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  interactor->SetRenderWindow(renderWindow);

  renderer->AddActor(polyActor);
  renderWindow->SetSize(500,500);
  renderWindow->Render();
  renderWindow->Render();
  interactor->Start();
 
  return EXIT_SUCCESS;
}


Maybe you will provide us with a full compilable small example demostrating
the problem.

best regards

Jochen

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