Difference between revisions of "Documentation/Nightly/Developers/FAQ/MRML"
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='''Developer FAQ: {{{1}}}'''= | ='''Developer FAQ: {{{1}}}'''= | ||
</includeonly> | </includeonly> | ||
| + | |||
| + | == How to add a MRML node into the scene ? == | ||
| + | |||
| + | * Generic pattern | ||
| + | <pre> | ||
| + | vtkNew<vtkMRML???Node> nodeToAdd; | ||
| + | ... | ||
| + | mrmlScene->AddNode(nodeToAdd.GetPointer()); | ||
| + | </pre> | ||
| + | |||
| + | * Add a polydata to the scene | ||
| + | <pre> | ||
| + | vtkNew<vtkMRMLModelNode> modelNode; | ||
| + | modelNode->SetPolyData(polyData); | ||
| + | mrmlScene->AddNode(modelNode.GetPointer()); | ||
| + | </pre> | ||
| + | |||
| + | * Load a polyData from file | ||
| + | <pre> | ||
| + | vtkSlicerModelsLogic* modelsLogic = ...; | ||
| + | //modelsLogic->SetMRMLScene(mrmlScene); | ||
| + | modelsLogic->AddModel(polyDataFileName); | ||
| + | </pre> | ||
== What to do if you get 'No LookupTable was set but number of components in input doesn't match OutputFormat' when loading a MRML scene ? == | == What to do if you get 'No LookupTable was set but number of components in input doesn't match OutputFormat' when loading a MRML scene ? == | ||
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</pre> | </pre> | ||
| − | Make sure the <code> | + | Make sure the <code>colorNodeRef</code> attribute is set on each <code>VolumeDisplay</code> node. |
| + | |||
| + | == How to change the volumes in the 2D views ? == | ||
| + | |||
| + | <pre> | ||
| + | appLogic = slicer.app.applicationLogic() | ||
| + | selectionNode = appLogic.GetSelectionNode() | ||
| + | selectionNode.SetReferenceActiveVolumeID(bg) | ||
| + | selectionNode.SetReferenceSecondaryVolumeID(fg) | ||
| + | appLogic.PropagateVolumeSelection() | ||
| + | </pre> | ||
| + | |||
| + | Source: https://github.com/fedorov/ChangeTrackerPy/blob/master/Wizard/Helper.py#L82 | ||
| + | |||
| + | == How to know the min/max offset of a slice view ? == | ||
| + | <pre> | ||
| + | vtkMRMLSliceNode* redSliceNode = vtkMRMLSliceNode::SafeDownCast( this->GetMRMLScene()->GetNodeByID( "vtkMRMLSliceNodeRed" )); | ||
| + | vtkMRMLSliceLogic* sliceLogic = this->GetMRMLApplicationLogic()->GetSliceLogic( redSliceNode ); | ||
| + | |||
| + | double sliceBounds[6] = {0, -1, 0, -1, 0, -1}; | ||
| + | sliceLogic->GetLowestVolumeSliceBounds(sliceBounds); | ||
| + | double min = sliceBounds[4]; | ||
| + | double max = sliceBounds[5]; | ||
| + | </pre> | ||
| + | |||
| + | Source: https://github.com/Slicer/Slicer/blob/master/Libs/MRML/Widgets/qMRMLSliceControllerWidget.cxx#L1267-L1276 | ||
Latest revision as of 22:14, 22 September 2017
Home < Documentation < Nightly < Developers < FAQ < MRML
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Contents
MRML
How to add a MRML node into the scene ?
- Generic pattern
vtkNew<vtkMRML???Node> nodeToAdd; ... mrmlScene->AddNode(nodeToAdd.GetPointer());
- Add a polydata to the scene
vtkNew<vtkMRMLModelNode> modelNode; modelNode->SetPolyData(polyData); mrmlScene->AddNode(modelNode.GetPointer());
- Load a polyData from file
vtkSlicerModelsLogic* modelsLogic = ...; //modelsLogic->SetMRMLScene(mrmlScene); modelsLogic->AddModel(polyDataFileName);
What to do if you get 'No LookupTable was set but number of components in input doesn't match OutputFormat' when loading a MRML scene ?
If you get the following error messages:
ERROR: In /path/to/VTK/Imaging/vtkImageMapToColors.cxx, line 153 vtkImageMapToColors (0x268f190): RequestInformation: No LookupTable was set but number of components in input doesn't match OutputFormat, therefore input can't be passed through! ERROR: In /path/to/VTK/Imaging/vtkImageExtractComponents.cxx, line 239 vtkImageExtractComponents (0x26947e0): Execute: Component 1 is not in input. ERROR: In /path/to/VTK/Imaging/vtkImageExtractComponents.cxx, line 239 vtkImageExtractComponents (0x26947e0): Execute: Component 1 is not in input. [...]
Make sure the colorNodeRef attribute is set on each VolumeDisplay node.
How to change the volumes in the 2D views ?
appLogic = slicer.app.applicationLogic() selectionNode = appLogic.GetSelectionNode() selectionNode.SetReferenceActiveVolumeID(bg) selectionNode.SetReferenceSecondaryVolumeID(fg) appLogic.PropagateVolumeSelection()
Source: https://github.com/fedorov/ChangeTrackerPy/blob/master/Wizard/Helper.py#L82
How to know the min/max offset of a slice view ?
vtkMRMLSliceNode* redSliceNode = vtkMRMLSliceNode::SafeDownCast( this->GetMRMLScene()->GetNodeByID( "vtkMRMLSliceNodeRed" ));
vtkMRMLSliceLogic* sliceLogic = this->GetMRMLApplicationLogic()->GetSliceLogic( redSliceNode );
double sliceBounds[6] = {0, -1, 0, -1, 0, -1};
sliceLogic->GetLowestVolumeSliceBounds(sliceBounds);
double min = sliceBounds[4];
double max = sliceBounds[5];
