Model Plane Cutting

Support
1

How can I set the InputPlane parameter to RED plane?
Because I want it to do the cutting on the RED plane.

dynamicModelerNode = slicer.mrmlScene.AddNewNodeByClass("vtkMRMLDynamicModelerNode")                
dynamicModelerNode.SetToolName("Plane cut")                
dynamicModelerNode.SetNodeReferenceID("PlaneCut.InputModel", InputModelNode.GetID())                
dynamicModelerNode.SetNodeReferenceID("PlaneCut.InputPlane", "Red")
dynamicModelerNode.SetNodeReferenceID("PlaneCut.OutputPositiveModel", InputModelNode.GetID())
slicer.modules.dynamicmodeler.logic().RunDynamicModelerTool(dynamicModelerNode)
2

You need to specify the “Red” slice node ID.

Ex.

redSliceNode = slicer.util.getFirstNodeByClassByName("vtkMRMLSliceNode", "Red")
dynamicModelerNode.SetNodeReferenceID("PlaneCut.InputPlane", redSliceNode.GetID())
3

Thank you for quick reply

But there is no Red slice node.
So i can not use getnode.
i need to set the plane node parameter of the dynamic model object as RED.
Thanks

4

If there isn’t a Red slice node, then you can’t set it as an input. It also wouldn’t appear in any view layouts.

There should always be a red slice node in the scene if you are running a Slicer GUI.

5

I have tried:

redSliceNode = slicer.util.getNodesByClass('vtkMRMLSliceNode','Red')
dynamicModelerNode = slicer.mrmlScene.AddNewNodeByClass("vtkMRMLDynamicModelerNode")                
dynamicModelerNode.SetToolName("Plane cut")                
dynamicModelerNode.SetNodeReferenceID("PlaneCut.InputModel", InputBeyinModelNode.GetID())                
dynamicModelerNode.SetNodeReferenceID("PlaneCut.InputPlane", redSliceNode.GetID())
dynamicModelerNode.SetNodeReferenceID("PlaneCut.OutputPositiveModel", InputBeyinModelNode.GetID())
slicer.modules.dynamicmodeler.logic().RunDynamicModelerTool(dynamicModelerNode)

but, the error:

dynamicModelerNode.SetNodeReferenceID("PlaneCut.InputPlane", redSliceNode.GetID())
AttributeError: 'list' object has no attribute 'GetID'
6

‘getNodesByClass’ returns a list of all "vtkMRMLSliceNodes in the scene ([Red, Green, Yellow]).

getFirstNodeByClassByName returns only a single node with the specified class name and node name.

7

After loading model file, the Red, Green and Yellow slices remain beyond the model.
I guess that’s why the Red slice plane cut isn’t doing any work.

image
image727×443 88.2 KB

8

It is all good then. If you only work with models (no image) then probably you want to use markup plane nodes for cutting.

9

I solved the problem.
Thanks Sunderland and Lasso
The solution is as below:

pointCoordinates = slicer.util.arrayFromModelPoints(InputBeyinModelNode)
import numpy as np
position = np.average(pointCoordinates, axis=0)

# Center slice views and cameras on this position                
for sliceNode in slicer.util.getNodesByClass('vtkMRMLSliceNode'):
    sliceNode.JumpSliceByCentering(*position)
for camera in slicer.util.getNodesByClass('vtkMRMLCameraNode'):
    camera.SetFocalPoint(position)              
    
# red slicedan kes
redSliceNode = slicer.util.getFirstNodeByClassByName("vtkMRMLSliceNode", "Red")

dynamicModelerNode = slicer.mrmlScene.AddNewNodeByClass("vtkMRMLDynamicModelerNode")                
dynamicModelerNode.SetToolName("Plane cut")                
dynamicModelerNode.SetNodeReferenceID("PlaneCut.InputModel", InputBeyinModelNode.GetID())                
dynamicModelerNode.SetNodeReferenceID("PlaneCut.InputPlane", redSliceNode.GetID())
dynamicModelerNode.SetNodeReferenceID("PlaneCut.OutputPositiveModel", OutputBeyinModelNode.GetID())
slicer.modules.dynamicmodeler.logic().RunDynamicModelerTool(dynamicModelerNode)
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