X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=blobdiff_plain;f=vtk%2FvtkgdcmViewer.cxx;h=95da0fa0faf98538d2882e3246124ffd01376156;hb=aabd40fdab563ece466ce5e3830798dd73ee3941;hp=eb512919b6772de3f648e7aa8f61027aef2cfdf2;hpb=68ba8dcb2f3a0ed059c51d8bfd9f7c826dc0342e;p=gdcm.git

diff --git a/vtk/vtkgdcmViewer.cxx b/vtk/vtkgdcmViewer.cxx
index eb512919..95da0fa0 100644
--- a/vtk/vtkgdcmViewer.cxx
+++ b/vtk/vtkgdcmViewer.cxx
@@ -1,45 +1,181 @@
+/*=========================================================================
+                                                                                
+  Program:   gdcm
+  Module:    $RCSfile: vtkgdcmViewer.cxx,v $
+  Language:  C++
+  Date:      $Date: 2009/11/03 14:05:23 $
+  Version:   $Revision: 1.32 $
+                                                                                
+  Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
+  l'Image). All rights reserved. See Doc/License.txt or
+  http://www.creatis.insa-lyon.fr/Public/Gdcm/License.html for details.
+                                                                                
+     This software is distributed WITHOUT ANY WARRANTY; without even
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+     PURPOSE.  See the above copyright notices for more information.
+                                                                                
+=========================================================================*/
+// This example illustrates how the vtkGdcmReader vtk class can be
+// used in order to:
+//  * produce a simple (vtk based) Dicom image STACK VIEWER.
+//  * dump the stack considered as a volume in a vtkStructuredPoints
+//    vtk file: the vtk gdcm wrappers can be seen as a simple way to convert
+//    a stack of Dicom images into a native vtk volume.
+//
+// Usage:
+//  * the filenames of the Dicom images constituting the stack should be
+//    given as command line arguments,
+//  * you can navigate through the stack by hitting any character key,
+//  * the produced vtk file is named "foo.vtk" (in the invocation directory).
+// 
+//----------------------------------------------------------------------------
 #include <vtkRenderWindowInteractor.h>
-#include <vtkImageViewer2.h>
+#include <vtkImageViewer.h>
 #include <vtkStructuredPoints.h>
 #include <vtkStructuredPointsWriter.h>
+#include <vtkCommand.h>
+#include <vtkRenderer.h>
+#include <vtkImageMapToColors.h>
+#include <vtkLookupTable.h>
 
 #include "vtkGdcmReader.h"
+#include "gdcmDocument.h"  // for NO_SHADOWSEQ
+#ifndef vtkFloatingPointType
+#define vtkFloatingPointType float
+#endif
 
-int main(int argc, char *argv[])
+//----------------------------------------------------------------------------
+// Callback for the interaction
+class vtkgdcmObserver : public vtkCommand
 {
+public:
+   virtual char const *GetClassName() const 
+   { 
+      return "vtkgdcmObserver";
+   }
+   static vtkgdcmObserver *New() 
+   { 
+      return new vtkgdcmObserver; 
+   }
+   vtkgdcmObserver()
+   {
+      this->ImageViewer = NULL;
+   }
+   virtual void Execute(vtkObject *, unsigned long event, void* )
+   {
+      if ( this->ImageViewer )
+      {
+         if ( event == vtkCommand::CharEvent )
+         {
+            int max = ImageViewer->GetWholeZMax();
+            int slice = (ImageViewer->GetZSlice() + 1 ) % ++max;
+            ImageViewer->SetZSlice( slice );
+            ImageViewer->Render();
+         }
+      }
+   }
+   vtkImageViewer *ImageViewer;
+};
 
-  vtkGdcmReader *reader = vtkGdcmReader::New();
-  reader->SetFileName( argv[1] );
-  //reader->DebugOn();
-  reader->Update();
-  
-  //print debug info:
-  reader->GetOutput()->Print( std::cout );
-        
-  vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
-
-  vtkImageViewer2 *viewer = vtkImageViewer2::New();
-  viewer->SetInput ( reader->GetOutput() );
-  viewer->SetupInteractor (iren);
+
+int main(int argc, char *argv[])
+{
+   if( argc < 2 )
+      return 0;
   
-//  float *range = reader->GetOutput()->GetScalarRange();
-//  viewer->SetColorWindow (range[1] - range[0]);
-//  viewer->SetColorLevel (0.5 * (range[1] + range[0]));
-
-  iren->Initialize();
-  iren->Start();
-
-  //if you wish you can export dicom to a vtk file  
-  vtkStructuredPointsWriter *writer = vtkStructuredPointsWriter::New();
-  writer->SetInput( reader->GetOutput());
-  writer->SetFileName( "foo.vtk" );
-  //writer->SetFileTypeToBinary();
-  writer->Write();
-
-  reader->Delete();
-  iren->Delete();
-  viewer->Delete();
-  writer->Delete();
+   vtkGdcmReader *reader = vtkGdcmReader::New();
+   reader->AllowLookupTableOff();
+
+   if( argc == 2 )
+      reader->SetFileName( argv[1] );
+   else
+      for(int i=1; i< argc; i++)
+         reader->AddFileName( argv[i] );
+
+// TODO : allow user to choose Load Mode
+   reader->SetLoadMode(GDCM_NAME_SPACE::LD_NOSHADOWSEQ);  
+   reader->Update();
+
+
+
+std::cout << "[0][0]==========" <<
+reader->GetOutput()->GetScalarComponentAsFloat(0,0,0,0) <<
+"===================="
+<< std::endl;
+std::cout << "[127][127]==========" <<
+reader->GetOutput()->GetScalarComponentAsFloat(0,127,0,0) <<
+"===================="
+<< std::endl;
+
+
+   //print debug info:
+   reader->GetOutput()->Print( cout );
+
+   vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
+
+   vtkImageViewer *viewer = vtkImageViewer::New();
+
+   if( reader->GetLookupTable() )
+   {
+      //convert to color:
+      vtkImageMapToColors *map = vtkImageMapToColors::New ();
+      map->SetInput (reader->GetOutput());
+      map->SetLookupTable (reader->GetLookupTable());
+      map->SetOutputFormatToRGB();
+      viewer->SetInput ( map->GetOutput() );
+      map->Delete();
+   }
+   else
+   {
+   
+   // For a single medical image, it would be more efficient to use
+   // 0028|1050 [DS] [Window Center]
+   // 0028|1051 [DS] [Window Width]
+   // but vtkgdcmReader doesn't know about them :-(
+
+      vtkFloatingPointType *range = reader->GetOutput()->GetScalarRange();
+      viewer->SetColorLevel (0.5 * (range[1] + range[0]));
+      viewer->SetColorWindow (range[1] - range[0]);
+
+      viewer->SetInput ( reader->GetOutput() );
+   }
+   viewer->SetupInteractor (iren);
   
-  return 0;
+   //vtkFloatingPointType *range = reader->GetOutput()->GetScalarRange();
+   //viewer->SetColorWindow (range[1] - range[0]);
+   //viewer->SetColorLevel (0.5 * (range[1] + range[0]));
+
+   // Here is where we setup the observer, 
+   vtkgdcmObserver *obs = vtkgdcmObserver::New();
+   obs->ImageViewer = viewer;
+   iren->AddObserver(vtkCommand::CharEvent,obs);
+   obs->Delete();
+
+   //viewer->Render();
+   iren->Initialize();
+   iren->Start();
+
+   //if you wish you can export dicom to a vtk file
+ 
+   vtkStructuredPointsWriter *writer = vtkStructuredPointsWriter::New();
+   writer->SetInput( reader->GetOutput());
+   writer->SetFileName( "foo.vtk" );
+   writer->SetFileTypeToBinary();
+   //writer->Write();
+   
+std::cout << "==========" << std::endl;
+   
+std::cout << "==========" <<
+reader->GetOutput()->GetScalarComponentAsFloat(0,0,0,0) <<
+"===================="
+<< std::endl;
+     
+   
+
+   reader->Delete();
+   iren->Delete();
+   viewer->Delete();
+   writer->Delete();
+
+   return 0;
 }