[vtkusers] easy example 2

[Dominik Paul]

Helle there,

my last mail didnt contain the code for an easy example. Here it is now.

Can I write into an image Data like this? But Why cant I see anything?

#include <vtkImageData.h>
#include <vtkImageViewer.h>
#include <iostream.h>
#include <vtktiffreader.h> 
#include <vtkimagereader.h> 




main()
{

 
 //vtkTiffReader* theReader = vtkTiffReader::New();
 vtkImageData* volume = vtkImageData::New();
 
 volume -> SetScalarType (VTK_UNSIGNED_SHORT);
    volume -> SetDimensions(100,100,3);
    volume -> SetNumberOfScalarComponents(1);
    volume -> AllocateScalars();
  
 unsigned short* voxels = (unsigned short*) volume -> GetScalarPointer();
 

//CAN I WRITE INTO IT LIKE THIS ???
    int index = 0; 
    for (int z=0; z<3; z++)
         for (int y=0; y<100; y++)
                   for (int x=0;x<100; x++) 
                  {
                     *(voxels+index) = x+1;
                     index++;
                  }

  volume -> Print(cout);
  volume -> UpdateInformation();
  volume -> Update();
  volume -> Print(cout);

     vtkImageViewer* theViewer = vtkImageViewer::New();
  theViewer -> SetInput(volume);
  theViewer -> SetZSlice(2);
  theViewer -> Render();

  while (1)
  {
  theViewer -> SetInput(volume);
  theViewer -> SetZSlice(2);
  theViewer -> Render();

  int hallo;
  cin >> hallo;
  if (hallo == 1) break;
  }
}