]> Creatis software - clitk.git/blobdiff - vv/vvBinaryImageOverlayActor.cxx
Debug RTStruct conversion with empty struc
[clitk.git] / vv / vvBinaryImageOverlayActor.cxx
index f54b743e1b8455196043c4145a0632dc23ac9096..1c18def90c2216c5b2d24c7ef3a0834e2f917513 100644 (file)
@@ -1,9 +1,9 @@
 /*=========================================================================
   Program:   vv                     http://www.creatis.insa-lyon.fr/rio/vv
 
-  Authors belong to: 
+  Authors belong to:
   - University of LYON              http://www.universite-lyon.fr/
-  - Léon Bérard cancer center       http://oncora1.lyon.fnclcc.fr
+  - Léon Bérard cancer center       http://www.centreleonberard.fr
   - CREATIS CNRS laboratory         http://www.creatis.insa-lyon.fr
 
   This software is distributed WITHOUT ANY WARRANTY; without even
 
   - BSD        See included LICENSE.txt file
   - CeCILL-B   http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html
-  ======================================================================-====*/
+  ===========================================================================**/
 
 #include "vvBinaryImageOverlayActor.h"
 #include "vvImage.h"
+#include <vtkVersion.h>
+#include <vtkStreamingDemandDrivenPipeline.h>
+#include <vtkInformation.h>
 #include <vtkImageActor.h>
 #include <vtkCamera.h>
 #include <vtkRenderer.h>
 #include <vtkProperty.h>
 #include <vtkImageMapToRGBA.h>
 #include <vtkLookupTable.h>
+#include <vtkImageMapper3D.h>
 
 //------------------------------------------------------------------------------
-vvBinaryImageOverlayActor::vvBinaryImageOverlayActor() {
+vvBinaryImageOverlayActor::vvBinaryImageOverlayActor()
+{ 
   mTSlice = -1;
   mSlice = 0;
   mColor.resize(3);
   mAlpha = 0.6;
   mImage = 0;
   mSlicer = 0;
+  mColorLUT = vtkSmartPointer<vtkLookupTable>::New();
+  mForegroundValue = 1;
+  mBackgroundValue = 0;
+  m_modeBG = true;
+  mDepth = 1.0;
 }
 //------------------------------------------------------------------------------
 
 
 //------------------------------------------------------------------------------
-vvBinaryImageOverlayActor::~vvBinaryImageOverlayActor() {
-  for (unsigned int i = 0; i < mSlicer->GetImage()->GetVTKImages().size(); i++) {
-    mSlicer->GetRenderer()->RemoveActor(mImageActorList[i]);
-  }
+vvBinaryImageOverlayActor::~vvBinaryImageOverlayActor()
+{ 
   mImageActorList.clear();
-  mMapperList.clear();
 }
 //------------------------------------------------------------------------------
 
 
 //------------------------------------------------------------------------------
-void vvBinaryImageOverlayActor::setColor(double r, double g, double b) {
+void vvBinaryImageOverlayActor::RemoveActors()
+{ 
+  for (unsigned int i = 0; i < mImageActorList.size(); i++) {
+    if (mSlicer != 0) {
+      if (mSlicer != NULL) {
+        if (mSlicer->GetRenderer() != 0) {
+          if (mImageActorList[i] != 0)  {
+            mSlicer->GetRenderer()->RemoveActor(mImageActorList[i]);
+          }
+        }
+      }
+    }
+  }
+}
+//------------------------------------------------------------------------------
+
+
+//------------------------------------------------------------------------------
+void vvBinaryImageOverlayActor::SetColor(double r, double g, double b)
+{ 
   mColor[0] = r;
   mColor[1] = g;
   mColor[2] = b;
@@ -61,97 +87,238 @@ void vvBinaryImageOverlayActor::setColor(double r, double g, double b) {
 //------------------------------------------------------------------------------
 
 
-
 //------------------------------------------------------------------------------
-void vvBinaryImageOverlayActor::setSlicer(vvSlicer * slicer) {
+void vvBinaryImageOverlayActor::SetSlicer(vvSlicer * slicer)
+{ 
   mSlicer = slicer;
 }
 //------------------------------------------------------------------------------
 
 
 //------------------------------------------------------------------------------
-void vvBinaryImageOverlayActor::initialize() {
+void vvBinaryImageOverlayActor::Initialize(bool IsVisible)
+{ 
   if (!mSlicer) {
     std::cerr << "ERROR. Please use setSlicer before setSlicer in vvBinaryImageOverlayActor." << std::endl;
     exit(0);
   }
-  
+
   if (!mImage) {
     std::cerr << "ERROR. Please use setImage before setSlicer in vvBinaryImageOverlayActor." << std::endl;
     exit(0);
   }
   // Create an actor for each time slice
   for (unsigned int numImage = 0; numImage < mSlicer->GetImage()->GetVTKImages().size(); numImage++) {
-    DD(numImage);
-    vtkImageMapToRGBA * mOverlayMapper = vtkImageMapToRGBA::New();
-    mOverlayMapper->SetInput(mImage->GetVTKImages()[0]); // DS TODO : to change if it is 4D !!!
-    vtkLookupTable * lut = vtkLookupTable::New();
-    DD(lut->IsOpaque ());
-    lut->SetRange(0,1);
-    lut->SetNumberOfTableValues(2);
-    lut->SetTableValue(0, 0, 0, 0, 0.0);   // BG
-    lut->SetTableValue(1, mColor[0], mColor[1], mColor[2], mAlpha); // FG
-    DD(mColor[0]);
-    mOverlayMapper->SetLookupTable(lut);
+    // how many intensity ?
     
-    vtkImageActor * mOverlayActor = vtkImageActor::New();
+
+
+    if (!mFusionReslice) {
+      mFusionReslice = vtkSmartPointer<vtkImageReslice>::New();
+      mFusionReslice->SetInterpolationModeToLinear();
+      mFusionReslice->AutoCropOutputOn();
+      mFusionReslice->SetBackgroundColor(-1000,-1000,-1000,1);
+    }
+
+    mConcatenatedFusionTransform = vtkSmartPointer<vtkTransform>::New();
+    mConcatenatedFusionTransform->Identity();
+    if (!mImage->GetTransform().empty()){
+      mConcatenatedFusionTransform->Concatenate(mImage->GetTransform()[0]);
+    }
+    mConcatenatedFusionTransform->Concatenate(mSlicer->GetSlicingTransform());
+    mFusionReslice->SetResliceAxes(mConcatenatedFusionTransform->GetMatrix());
+    if (mImage->IsTimeSequence()) {
+#if VTK_MAJOR_VERSION <= 5
+    mFusionReslice->SetInput(0, mImage->GetVTKImages()[numImage]);
+    mFusionReslice->UpdateInformation();
+#else
+    mFusionReslice->SetInputData(0, mImage->GetVTKImages()[numImage]);
+#endif
+    } else {
+#if VTK_MAJOR_VERSION <= 5
+    mFusionReslice->SetInput(0, mImage->GetVTKImages()[0]);
+    mFusionReslice->UpdateInformation();
+#else
+    mFusionReslice->SetInputData(0, mImage->GetVTKImages()[0]);
+#endif
+    }
+    mFusionReslice->Update();
+
+
+    
+    vtkSmartPointer<vtkImageMapToRGBA> mOverlayMapper = vtkSmartPointer<vtkImageMapToRGBA>::New();
+#if VTK_MAJOR_VERSION <= 5
+    mOverlayMapper->SetInput(mFusionReslice->GetOutput());
+#else
+    mOverlayMapper->SetInputConnection(mFusionReslice->GetOutputPort(0));
+#endif
+
+    double range[2];
+    if (mImage->IsTimeSequence())
+    {
+        mImage->GetVTKImages()[numImage]->GetScalarRange(range);
+    }
+    else {
+        mImage->GetVTKImages()[0]->GetScalarRange(range);
+    }
+    int n = range[1]-range[0]+1;
+    mColorLUT->SetRange(range[0],range[1]);
+    mColorLUT->SetNumberOfTableValues(n);
+
+    // Mode BG -> all is color except BG
+    if (m_modeBG) {
+      for(int i=0; i<n; i++) {
+       mColorLUT->SetTableValue(i, mColor[0], mColor[1], mColor[2], mAlpha);
+      }
+      mColorLUT->SetTableValue(mBackgroundValue, 0, 0, 0, 0.0);
+    }
+    else {
+      // Mode FG -> all is BG, except FG which is color
+      for(int i=0; i<n; i++) {
+       mColorLUT->SetTableValue(i, 0, 0, 0, 0.0);
+      }
+      mColorLUT->SetTableValue(mForegroundValue, mColor[0], mColor[1], mColor[2], mAlpha);
+    }
+
+    mOverlayMapper->SetLookupTable(mColorLUT);
+
+    vtkSmartPointer<vtkImageActor> mOverlayActor = vtkSmartPointer<vtkImageActor>::New();
+#if VTK_MAJOR_VERSION <= 5
     mOverlayActor->SetInput(mOverlayMapper->GetOutput());
+#else
+    mOverlayActor->GetMapper()->SetInputConnection(mOverlayMapper->GetOutputPort());
+#endif
     mOverlayActor->SetPickable(0);
-    mOverlayActor->SetVisibility(true);
-    //mOverlayActor->SetOpacity(1.0);
+    mOverlayActor->SetVisibility(IsVisible);
+    //mOverlayActor->SetOpacity(1.0);  
+
+    // FIXME : by default overlay is not interpolated.
+    // mOverlayActor->SetInterpolate(mSlicer->GetImageActor()->GetInterpolate());
+    mOverlayActor->InterpolateOff();
 
     mMapperList.push_back(mOverlayMapper);
     mImageActorList.push_back(mOverlayActor);
-    mSlicer->GetRenderer()->AddActor(mOverlayActor);  
+    mSlicer->GetRenderer()->AddActor(mImageActorList[numImage]);
   }
 }
 //------------------------------------------------------------------------------
 
 
 //------------------------------------------------------------------------------
-void vvBinaryImageOverlayActor::setImage(vvImage::Pointer image) {
+void vvBinaryImageOverlayActor::SetOpacity(double d)
+{ 
+  mAlpha = d;
+}
+//------------------------------------------------------------------------------
+
+
+//------------------------------------------------------------------------------
+// void vvBinaryImageOverlayActor::UpdateOpacity(double d) {
+//   mAlpha = d;
+//   mColorLUT->SetTableValue(1, mColor[0], mColor[1], mColor[2], mAlpha); // FG
+//   for (unsigned int numImage = 0; numImage < mSlicer->GetImage()->GetVTKImages().size(); numImage++) {
+//     // how many intensity ?
+//     vtkImageMapToRGBA * mOverlayMapper = mMapperList[numImage];
+//     mOverlayMapper->SetLookupTable(mColorLUT);
+
+//     vtkImageActor * mOverlayActor = mImageActorList[numImage];
+//     mOverlayActor->SetInput(mOverlayMapper->GetOutput());
+//   }
+// }
+//------------------------------------------------------------------------------
+
+
+//------------------------------------------------------------------------------
+// void vvBinaryImageOverlayActor::SetColor(double r, double v, double b) {
+//   mColor[0] = r;
+//   mColor[1] = v;
+//   mColor[2] = b;
+//   // mColorLUT->SetTableValue(1, mColor[0], mColor[1], mColor[2], mAlpha); // FG
+//   // for (unsigned int numImage = 0; numImage < mSlicer->GetImage()->GetVTKImages().size(); numImage++) {
+//   //   // how many intensity ?
+//   //   vtkImageMapToRGBA * mOverlayMapper = mMapperList[numImage];
+//   //   mOverlayMapper->SetLookupTable(mColorLUT);
+
+//   //   vtkImageActor * mOverlayActor = mImageActorList[numImage];
+//   //   mOverlayActor->SetInput(mOverlayMapper->GetOutput());
+//   // }
+// }
+//------------------------------------------------------------------------------
+
+
+//------------------------------------------------------------------------------
+void vvBinaryImageOverlayActor::SetImage(vvImage::Pointer image, double bg, bool modeBG)
+{ 
   mImage = image;
+  if (modeBG) {
+    mBackgroundValue = bg;
+    m_modeBG = true;
+  }
+  else {
+    mForegroundValue = bg;
+    m_modeBG = false;
+  }
 }
 //------------------------------------------------------------------------------
 
 
 //------------------------------------------------------------------------------
-void vvBinaryImageOverlayActor::hideActors() {
+void vvBinaryImageOverlayActor::HideActors()
+{ 
   if (!mSlicer) return;
   mSlice = mSlicer->GetSlice();
   for(unsigned int i=0; i<mImageActorList.size(); i++) {
     mImageActorList[i]->VisibilityOff();
   }
+  // Caller MUST call Render
+  //  mSlicer->Render();
 }
 //------------------------------------------------------------------------------
 
-  
+
 //------------------------------------------------------------------------------
-void vvBinaryImageOverlayActor::showActors() {
+void vvBinaryImageOverlayActor::ShowActors()
+{ 
   if (!mSlicer) return;
   mSlice = mSlicer->GetSlice();
   mTSlice = mSlicer->GetTSlice();
-  //  for(unsigned int i=0; i<mSquaresActorList.size(); i++) {
   mImageActorList[mTSlice]->VisibilityOn();
-  update(0, mSlice);
-  //}
+  UpdateSlice(0, mSlice);
+  // Caller MUST call Render
+  //mSlicer->Render();
 }
 //------------------------------------------------------------------------------
 
-  
+
+//------------------------------------------------------------------------------
+void vvBinaryImageOverlayActor::UpdateColor()
+{ 
+  mColorLUT->SetTableValue(1, mColor[0], mColor[1], mColor[2], mAlpha); // FG
+  for (unsigned int numImage = 0; numImage < mSlicer->GetImage()->GetVTKImages().size(); numImage++) {
+    // how many intensity ?
+    vtkImageMapToRGBA * mOverlayMapper = mMapperList[numImage];
+    mOverlayMapper->SetLookupTable(mColorLUT);
+
+    vtkImageActor * mOverlayActor = mImageActorList[numImage];
+#if VTK_MAJOR_VERSION <= 5
+    mOverlayActor->SetInput(mOverlayMapper->GetOutput());
+#else
+    mOverlayActor->SetInputData(mOverlayMapper->GetOutput());
+#endif
+  }
+}
 //------------------------------------------------------------------------------
-void vvBinaryImageOverlayActor::update(int slicer, int slice) {
-  // DD("update");
-  // DD(slicer);
-  // DD(slice);
+
+//------------------------------------------------------------------------------
+void vvBinaryImageOverlayActor::UpdateSlice(int slicer, int slice, bool force)
+{ 
   if (!mSlicer) return;
-  // DD(mSlicer->GetSlice());
-  // DD(mSlicer->GetTSlice());
 
-  if (mPreviousSlice == mSlicer->GetSlice()) {
-    if (mPreviousTSlice == mSlicer->GetTSlice()) {
-      DD("=========== NOTHING");
-      return; // Nothing to do
+  if (!force) {
+    if (mPreviousSlice == mSlicer->GetSlice()) {
+      if (mPreviousTSlice == mSlicer->GetTSlice()) {
+        return; // Nothing to do
+      }
     }
   }
 
@@ -160,35 +327,21 @@ void vvBinaryImageOverlayActor::update(int slicer, int slice) {
   mTSlice = mSlicer->GetTSlice();
 
   // Update extent
-  //  DD("Update extent");
-
-  /*
-1 - get extent
-2 - orientation
-3 - compute new extent : ComputeImageDisplayedExtent
-4 - ClipDisplayedExtent
-5 - actor SetDisplayExtent
-
-==> à mettre dans slicer.
-  ==> fct (image input, image à overl)
-  */
   int * imageExtent = mSlicer->GetExtent();
   int orientation = mSlicer->GetOrientation();
   int maskExtent[6];
   ComputeExtent(orientation, mSlice, imageExtent, maskExtent);
-  //ComputeExtent(imageExtent, maskExtent, mSlicer->GetImage()->GetFirstVTKImageData(), mImage->GetFirstVTKImageData());
-  ComputeExtent(maskExtent, maskExtent, mSlicer->GetImage()->GetFirstVTKImageData(), mImage->GetFirstVTKImageData());
-  // std::cout << "maskExtent = " << maskExtent[0] << " " << maskExtent[1] << " " << maskExtent[2] << " " 
-  //       << maskExtent[3] << " " << maskExtent[4] << " " << maskExtent[5] << std::endl;
+  ComputeExtent(maskExtent, maskExtent, mSlicer->GetImage()->GetVTKImages()[mTSlice], mImage->GetVTKImages()[mTSlice]);
+#if VTK_MAJOR_VERSION <= 5
   mSlicer->ClipDisplayedExtent(maskExtent, mMapperList[mTSlice]->GetInput()->GetWholeExtent());
-  // std::cout << "maskExtent = " << maskExtent[0] << " " << maskExtent[1] << " " << maskExtent[2] << " " 
-  //       << maskExtent[3] << " " << maskExtent[4] << " " << maskExtent[5] << std::endl;
-  SetDisplayExtentAndCameraPosition(orientation, mSlice, maskExtent, mImageActorList[mTSlice], 0.0);
-  
-  // TOO SLOW ? 
-  //mSlicer->Render();
+#else
+  mSlicer->ClipDisplayedExtent(maskExtent, mMapperList[mTSlice]->GetInput()->GetInformation()->Get(vtkDataObject::DATA_EXTENT()));
+#endif
+  HideActors();
+  mImageActorList[mTSlice]->VisibilityOn();
+  SetDisplayExtentAndCameraPosition(orientation, mSlice, maskExtent, mImageActorList[mTSlice], mDepth);
 
-  //
+  // set previous slice
   mPreviousTSlice = mSlicer->GetTSlice();
   mPreviousSlice  = mSlicer->GetSlice();
 }
@@ -196,87 +349,85 @@ void vvBinaryImageOverlayActor::update(int slicer, int slice) {
 
 
 //------------------------------------------------------------------------------
-void vvBinaryImageOverlayActor::ComputeExtent(int orientation, 
-                                             int slice, 
+void vvBinaryImageOverlayActor::ComputeExtent(int orientation,
+                                             int slice,
                                              int * inExtent,
-                                             int * outExtent) {
-  //  std::cout << "InExtent = " << inExtent[0] << " " << inExtent[1] << " " << inExtent[2] << " " 
-  //       << inExtent[3] << " " << inExtent[4] << " " << inExtent[5] << std::endl;
-  //  DD(orientation);
+                                             int * outExtent)
+{ 
   switch (orientation) {
   case vtkImageViewer2::SLICE_ORIENTATION_XY:
     for(int i=0; i<4; i++) outExtent[i] = inExtent[i];
-    outExtent[4] = outExtent[5] = slice; 
+    outExtent[4] = outExtent[5] = slice;
     break;
   case vtkImageViewer2::SLICE_ORIENTATION_XZ:
     for(int i=0; i<2; i++) outExtent[i] = inExtent[i];
     for(int i=4; i<6; i++) outExtent[i] = inExtent[i];
-    outExtent[2] = outExtent[3] = slice; 
+    outExtent[2] = outExtent[3] = slice;
     break;
   case vtkImageViewer2::SLICE_ORIENTATION_YZ:
     for(int i=2; i<6; i++) outExtent[i] = inExtent[i];
-    outExtent[0] = outExtent[1] = slice; 
+    outExtent[0] = outExtent[1] = slice;
     break;
   }
-  // std::cout << "OutExtent = " << outExtent[0] << " " << outExtent[1] << " " << outExtent[2] << " " 
-  //       << outExtent[3] << " " << outExtent[4] << " " << outExtent[5] << std::endl;
 }
 //------------------------------------------------------------------------------
 
 
 //----------------------------------------------------------------------------
 void vvBinaryImageOverlayActor::ComputeExtent(int * inExtent, int * outExtent, vtkImageData * image, vtkImageData * overlay)
-{
-  outExtent[0] = (( image->GetOrigin()[0] + inExtent[0]*image->GetSpacing()[0] ) - overlay->GetOrigin()[0]) /
-    overlay->GetSpacing()[0];
-  outExtent[1] = (( image->GetOrigin()[0] + inExtent[1]*image->GetSpacing()[0] ) - overlay->GetOrigin()[0]) /
-    overlay->GetSpacing()[0];
-  outExtent[2] = (( image->GetOrigin()[1] + inExtent[2]*image->GetSpacing()[1] ) - overlay->GetOrigin()[1]) /
-    overlay->GetSpacing()[1];
-  outExtent[3] = (( image->GetOrigin()[1] + inExtent[3]*image->GetSpacing()[1] ) - overlay->GetOrigin()[1]) /
-    overlay->GetSpacing()[1];
-  outExtent[4] = (( image->GetOrigin()[2] + inExtent[4]*image->GetSpacing()[2] ) - overlay->GetOrigin()[2]) /
-    overlay->GetSpacing()[2];
-  outExtent[5] = (( image->GetOrigin()[2] + inExtent[5]*image->GetSpacing()[2] ) - overlay->GetOrigin()[2]) /
-    overlay->GetSpacing()[2];
+{ 
+  for(int i=0; i<3; i++) {
+    double a = (image->GetOrigin()[i] + inExtent[i*2]*image->GetSpacing()[i] - 
+                overlay->GetOrigin()[i]) / overlay->GetSpacing()[i];
+    double b = (image->GetOrigin()[i] + inExtent[i*2+1]*image->GetSpacing()[i] - 
+                overlay->GetOrigin()[i]) / overlay->GetSpacing()[i];
+    outExtent[i*2] = lrint(a);
+    outExtent[i*2+1] = lrint(b);
+  }
+
+  /* // FIXME (original)
+  outExtent[0] = (int)lrint(((image->GetOrigin()[0] + inExtent[0]*image->GetSpacing()[0]) - overlay->GetOrigin()[0]) / overlay->GetSpacing()[0]);
+  outExtent[1] = (int)lrint(((image->GetOrigin()[0] + inExtent[1]*image->GetSpacing()[0]) - overlay->GetOrigin()[0]) / overlay->GetSpacing()[0]);
+  outExtent[2] = (int)lrint(((image->GetOrigin()[1] + inExtent[2]*image->GetSpacing()[1]) - overlay->GetOrigin()[1]) / overlay->GetSpacing()[1]);
+  outExtent[3] = (int)lrint(((image->GetOrigin()[1] + inExtent[3]*image->GetSpacing()[1]) - overlay->GetOrigin()[1]) / overlay->GetSpacing()[1]);
+  outExtent[4] = (int)lrint(((image->GetOrigin()[2] + inExtent[4]*image->GetSpacing()[2]) - overlay->GetOrigin()[2]) / overlay->GetSpacing()[2]);
+  outExtent[5] = (int)lrint(((image->GetOrigin()[2] + inExtent[5]*image->GetSpacing()[2]) - overlay->GetOrigin()[2]) / overlay->GetSpacing()[2]);
+  */
 }
 //----------------------------------------------------------------------------
 
 
 //------------------------------------------------------------------------------
-void vvBinaryImageOverlayActor::SetDisplayExtentAndCameraPosition(int orientation, 
-                                                                 int slice, 
-                                                                 int * extent, 
-                                                                 vtkImageActor * actor, 
-                                                                 double position) {
-  //  DD("SetDisplayExtentAndCameraPosition");
-  //DD(orientation);
-  //DD(slice);
-  actor->SetDisplayExtent(extent);
-  
-
+void vvBinaryImageOverlayActor::SetDisplayExtentAndCameraPosition(int orientation,
+                                                                 int slice,
+                                                                 int * extent,
+                                                                 vtkImageActor * actor,
+                                                                 double position)
+{ 
+  /* FIXME
+     Error according to camera orientation
+   */
+
+  // Set position
   if (orientation == vtkImageViewer2::SLICE_ORIENTATION_XY) {
-    if (mSlicer->GetRenderer()->GetActiveCamera()->GetPosition()[2] > slice)
-      actor->SetPosition(0,0, position);
-    else
-      actor->SetPosition(0,0, -position);    
+    //if (mSlicer->GetRenderer()->GetActiveCamera()->GetPosition()[2] > slice)
+      actor->SetPosition(0,0, -position);
+      //else
+      //actor->SetPosition(0,0, position);
   }
   if (orientation == vtkImageViewer2::SLICE_ORIENTATION_XZ) {
-    if (mSlicer->GetRenderer()->GetActiveCamera()->GetPosition()[1] > slice)
-      actor->SetPosition(0,position,0);
-    else
-      actor->SetPosition(0,-position,0);    
+    //if (mSlicer->GetRenderer()->GetActiveCamera()->GetPosition()[1] > slice)
+    // actor->SetPosition(0,position,0);
+    //else
+      actor->SetPosition(0,-position,0);
   }
   if (orientation == vtkImageViewer2::SLICE_ORIENTATION_YZ) {
-    if (mSlicer->GetRenderer()->GetActiveCamera()->GetPosition()[0] > slice)
-      actor->SetPosition(position,0, 0);
-    else
-      actor->SetPosition(-position,0, 0);    
+    //if (mSlicer->GetRenderer()->GetActiveCamera()->GetPosition()[0] > slice)
+    //  actor->SetPosition(position,0, 0);
+    //else
+      actor->SetPosition(-position,0, 0);
   }
-  
+  actor->SetDisplayExtent(extent);
 }
 //------------------------------------------------------------------------------
 
-
-
-