[vtkusers] VTK+GTKMM+VTKMM+Glade

[Jihan Zoghbi]

Hi people,

I'm trying to build an application to read DICOM and Analyse images. First, I made the interface using glade and I had no problem with that. I exported it to C++ code. After that, I eddited the code to read DICOM images. I want to display the image on a vtk renderer window and for that I used vtkmm. The problem is that the program reads the image but it doesn' t display it (render it... actually I don't know exactlly what's going on!). Here is the main C++ source code:

#include <gtkmm/stock.h>
#include <gtkmm/filechooserdialog.h>
#include <vtkPolyDataMapper.h>
#include <vtkCubeSource.h>
#include <vtkSphereSource.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkVolume16Reader.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkOutlineFilter.h>
#include <vtkCamera.h>
#include <vtkStripper.h>
#include <vtkLookupTable.h>
#include <vtkImageDataGeometryFilter.h>
#include <vtkProperty.h>
#include <vtkPolyDataNormals.h>
#include <vtkContourFilter.h>
#include <vtkImageData.h>
#include <vtkImageMapToColors.h>
#include <vtkImageActor.h>
#include <vtkDICOMImageReader.h>
#include <vtkImageGaussianSmooth.h>

#include "vtkmm.h"
#include "config.h"
#include "window1.hh"

window1::window1() : window1_glade()
{
  this->signal_check_resize().
  connect(sigc::mem_fun(*this, &window1::checkResize));
  // Creates a widget for VTK rendering
  renArea = new class Gtk::Vtk::RenderingArea();
  renderer = renArea->get_vtk_renderer();
  renderer->SetBackground(0,0,0);

  renArea2 = new class Gtk::Vtk::RenderingArea();
  renderer2 = renArea2->get_vtk_renderer();
  renderer2->SetBackground(0,0,0);

  renArea3 = new class Gtk::Vtk::RenderingArea();
  renderer3 = renArea3->get_vtk_renderer();
  renderer3->SetBackground(0,0,0);
  // Reserves 200 pixels for the VTK widget
  hpaned1->set_position(800);

  fixed1->set_size_request(400,(this->get_height())/2);
  fixed2->set_size_request(400,(this->get_height())/2);
  fixed3->set_size_request(400,(this->get_height())/2);

   // Adds the VTK widget to its reserved area
  fixed1->add(*renArea);
  fixed2->add(*renArea2);
  fixed3->add(*renArea3);
  renArea->show();
  renArea2->show();
  renArea3->show();
  this->maximize();
}

void window1::on_dicom1_activate()
{
   Gtk::FileChooserDialog dialog("Please choose a file",Gtk::FILE_CHOOSER_ACTION_OPEN);
   dialog.set_transient_for(*this);

   //Add response buttons the the dialog:
   dialog.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
   dialog.add_button(Gtk::Stock::OPEN, Gtk::RESPONSE_OK);

   //Add filters, so that only certain file types can be selected:

   Gtk::FileFilter filter_dicom;
   filter_dicom.set_name("DICOM images");
   filter_dicom.add_pattern("*");
   dialog.add_filter(filter_dicom);  
   int result = dialog.run();

   //Handle the response:
   switch(result)
   {
     case(Gtk::RESPONSE_OK):
     {
       std::cout << "Open clicked." << std::endl;

       //Notice that this is a std::string, not a Glib::ustring.
       std::string strFolderPath = "/home/talita/Projetos/projeto3/src/Fatias";//dialog.get_filename();//
       std::cout << "File selected: " <<  strFolderPath << std::endl;

       renderer = renArea->get_vtk_renderer();
       renderer->RemoveAllViewProps();
       vtkDICOMImageReader *dicom = vtkDICOMImageReader::New();// 
       dicom->SetDirectoryName (strFolderPath.c_str());//letitura das imagens atraves do string digitado
       dicom->Update();// ler 
    
    vtkImageGaussianSmooth *GaussianSmooth = vtkImageGaussianSmooth::New();
    GaussianSmooth->SetInputConnection(dicom->GetOutputPort());
    GaussianSmooth->Update();
    
      
    vtkContourFilter *skinExtractor = vtkContourFilter::New();
        skinExtractor->SetInputConnection( GaussianSmooth->GetOutputPort());
        skinExtractor->SetValue(0, 50);

    
      vtkPolyDataNormals *skinNormals = vtkPolyDataNormals::New();
        skinNormals->SetInputConnection(skinExtractor->GetOutputPort());
        skinNormals->SetFeatureAngle(60.0);
    

      vtkStripper *skinStripper = vtkStripper::New();
        skinStripper->SetInputConnection(skinNormals->GetOutputPort());
      vtkPolyDataMapper *skinMapper = vtkPolyDataMapper::New();
        skinMapper->SetInputConnection(skinStripper->GetOutputPort());
        skinMapper->ScalarVisibilityOff();
      vtkActor *skin = vtkActor::New();
        skin->SetMapper(skinMapper);
        skin->GetProperty()->SetDiffuseColor(1, .49, .25);
        skin->GetProperty()->SetSpecular(.3);
        skin->GetProperty()->SetSpecularPower(20);
    
  vtkOutlineFilter *outlineData = vtkOutlineFilter::New();
    outlineData->SetInputConnection(dicom->GetOutputPort());
  vtkPolyDataMapper *mapOutline = vtkPolyDataMapper::New();
    mapOutline->SetInputConnection(outlineData->GetOutputPort());
  vtkActor *outline = vtkActor::New();
    outline->SetMapper(mapOutline);
    outline->GetProperty()->SetColor(1,0,0);

      renderer->AddActor(outline);
// THE PROGRAM STOPS HERE AND DOES'T DISPLAY THE IMAGE    

      renderer->AddActor(skin);
    
    
    renderer->GetActiveCamera()->SetPosition(0.0, 0.0, -4.0);
        renderer->GetActiveCamera()->SetViewUp(0.0, 0.0, 0.0);
        renderer->GetActiveCamera()->SetFocalPoint(0.0, 0.0, 0.0);
        renderer->GetActiveCamera()->SetClippingRange(1.0, 4.0);
    renderer->GetActiveCamera()->ComputeViewPlaneNormal();
    
    renArea->get_vtk_window()->Render();

       break;
     }
     case(Gtk::RESPONSE_CANCEL):
     {
       std::cout << "Cancel clicked." << std::endl;
       break;
     }
     default:
     {
       std::cout << "Unexpected button clicked." << std::endl;
       break;
     }
   }    
}

void window1::checkResize()
{
       renArea->set_size_request(fixed1->get_width(), (this->get_height())/2);
    renArea2->set_size_request(fixed2->get_width(), (this->get_height())/2);
        renArea3->set_size_request(fixed3->get_width(), (this->get_height())/2);
}


I would aprecciate some help.

Thank you in advance,
Jihan 
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