The size and position of the bounding box

Support
1

Hello. How can I make the position and dimensions of the bounding box like the 3D model?

bounding box
bounding box1911×1008 295 KB

2

I asked the AI to write me such a script, and it works (I tried it):

import vtk
import slicer

def createBoundingBoxModel(inputModelNode, boundingBoxModelName="BoundingBox"):
    """
    Create a model node that represents the bounding box of the input model.
    
    Args:
        inputModelNode: The model node whose bounding box to visualize
        boundingBoxModelName: Name for the new bounding box model node
        
    Returns:
        The created bounding box model node
    """
    if not inputModelNode or not inputModelNode.GetPolyData():
        raise ValueError("Invalid input model node")
    
    # Get bounding box of the input model
    bounds = inputModelNode.GetPolyData().GetBounds()
    # bounds = [xmin, xmax, ymin, ymax, zmin, zmax]
    
    # Create a cube source with the bounding box dimensions
    cubeSource = vtk.vtkCubeSource()
    cubeSource.SetBounds(bounds)
    cubeSource.Update()
    
    # Alternative approach: Create cube and transform it
    # center = [(bounds[0] + bounds[1])/2, (bounds[2] + bounds[3])/2, (bounds[4] + bounds[5])/2]
    # size = [bounds[1] - bounds[0], bounds[3] - bounds[2], bounds[5] - bounds[4]]
    # cubeSource.SetCenter(center)
    # cubeSource.SetXLength(size[0])
    # cubeSource.SetYLength(size[1])
    # cubeSource.SetZLength(size[2])
    
    # Create a new model node for the bounding box
    boundingBoxModelNode = slicer.mrmlScene.AddNewNodeByClass("vtkMRMLModelNode", boundingBoxModelName)
    boundingBoxModelNode.SetAndObservePolyData(cubeSource.GetOutput())
    
    # Create display node to make it visible
    boundingBoxModelNode.CreateDefaultDisplayNodes()
    displayNode = boundingBoxModelNode.GetDisplayNode()
    
    # Configure display properties for wireframe representation
    displayNode.SetRepresentation(displayNode.WireframeRepresentation)
    displayNode.SetColor(1.0, 1.0, 0.0)  # Yellow color
    displayNode.SetLineWidth(2)
    displayNode.SetOpacity(0.8)
    
    return boundingBoxModelNode