Documentation/Nightly/Developers/Tutorials/MigrationGuide/Slicer

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Migration Guide

MRML: Slicer 4.6: Moved up vtkMRMLStorableNode in the MRML node hierarchy.

Rational:

vtkMRMLStorableNode is not a children of vtkMRMLTransformable node anymore, but directly a children of vtkMRMLNode.

This allows making a node storable without requiring it to be also transformable. It is important for several node types (color maps, tables, etc), which require separate storage node but are not transformable.

Error message similar to: 

   /tmp/LongitudinalPETCT/MRML/vtkMRMLLongitudinalPETCTStudyNode.cxx: In member function ‘void vtkMRMLLongitudinalPETCTStudyNode::ObserveRegistrationTransform(bool)’:
   /tmp/LongitudinalPETCT/MRML/vtkMRMLLongitudinalPETCTStudyNode.cxx:478:28: error: ‘class vtkMRMLVolumePropertyNode’ has no member named ‘GetParentTransformNode’
                  && propNode->GetParentTransformNode()
                               ^
   /tmp/LongitudinalPETCT/MRML/vtkMRMLLongitudinalPETCTStudyNode.cxx:480:23: error: ‘class vtkMRMLVolumePropertyNode’ has no member named ‘SetAndObserveTransformNodeID’
                propNode->SetAndObserveTransformNodeID(
                          ^
   /tmp/LongitudinalPETCT/MRML/vtkMRMLLongitudinalPETCTStudyNode.cxx:503:23: error: ‘class vtkMRMLVolumePropertyNode’ has no member named ‘SetAndObserveTransformNodeID’
                propNode->SetAndObserveTransformNodeID(NULL);
                          ^

Solution:

Removes lines and/or refactor code

MRML: Slicer 4.5: Introduction of vtkMRMLLabelMapVolumeNode

Rational:

Before vtkMRMLScalarVolumeNode was used for both scalar and label map volumes and the LabelMap custom MRML node attribute was used for distinguishing between them (0=scalar; 1=label map volume).

This made conversion between labelmap/scalar volumes very easy but made it difficult to customize behavior, display, processing of segmentation information.

Now a new vtkMRMLLabelMapVolumeNode class is used for storing segmentation information (still using vtkMRMLScalarVolume used as base class for backward compatibility; but in the future the base class may be changed to reflect that segmentation can be represented in various ways, not just as volumes).

Error message similar to: 

 error: ‘class vtkMRMLScalarVolumeNode’ has no member named ‘SetLabelMap’
    outputVolumeNode->SetLabelMap(1);
                      ^

Solution (part1: down cast to vtkMRMLLabelMapVolumeNode, remove call to SetLabelMap)

Replace lines like: 

    vtkMRMLNode* outputNode = d->OutputLabelVolumeMRMLNodeComboBox->currentNode();
    vtkMRMLScalarVolumeNode* outputVolumeNode = vtkMRMLScalarVolumeNode::SafeDownCast(outputNode);
    [...]
    outputVolumeNode->SetLabelMap(1);


with: 

    vtkMRMLLabelMapVolumeNode* outputVolumeNode =
      vtkMRMLLabelMapVolumeNode::SafeDownCast(d->OutputLabelVolumeMRMLNodeComboBox->currentNode());
    [...]


Solution (part2: Update UI file):

Replace lines like: 

 <widget class="qMRMLNodeComboBox" name="InputLabelVolumeMRMLNodeComboBox">
  <property name="nodeTypes">
   <stringlist>
    <string>vtkMRMLScalarVolumeNode</string>
   </stringlist>
  </property>
  [...]
 </widget>

with: 

 <widget class="qMRMLNodeComboBox" name="InputLabelVolumeMRMLNodeComboBox">
  <property name="nodeTypes">
   <stringlist>
    <string>vtkMRMLLabelMapVolumeNode</string>      <------------- Update Here
   </stringlist>
  </property>
  [...]
 </widget>


Solution (part3: Update node selector configuration):

Replace lines like: 

 nodeSelector.setNodeTypes(QStringList("vtkMRMLScalarVolumeNode"));
 nodeSelector.addAttribute("vtkMRMLScalarVolumeNode", "LabelMap", "1");

with: 

 nodeSelector.setNodeTypes(QStringList("vtkMRMLLabelMapVolumeNode"));


References:


CLI: Slicer 4.3: Add ITKFactoryRegistration library centralizing ITK IO factory registration

Rational: 

 Linking against ITKFactoryRegistration ensures that ITK IO factory are properly registered on all supported platforms.

Error message similar to: 

 Undefined symbols for architecture x86_64:
 "itk::itkFactoryRegistration()", referenced from:
 _main in ImageMakerTest.cxx.o
 ld: symbol(s) not found for architecture x86_64

Solution:

Replace lines like: 

 target_link_libraries(${CLP}Test ${CLP}Lib)

with: 

 target_link_libraries(${CLP}Test ${CLP}Lib ${SlicerExecutionModel_EXTRA_EXECUTABLE_TARGET_LIBRARIES})

References:

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