Markups line projection on a model

Development
1

Hello,
I have markups line which passes through the surface of the model. I’d like to shift endpoint to the model surface using python. Could you help me please?

Ladislav

point_on_surface
point_on_surface891×648 156 KB

2

This works fine:

obbTree = vtk.vtkOBBTree()
obbTree.SetDataSet(modelNode.GetPolyData())
obbTree.BuildLocator()
pointsVTKintersection = vtk.vtkPoints()
code = obbTree.IntersectWithLine(startPoin, endPoint, pointsVTKintersection, None)
pointsVTKIntersectionData = pointsVTKintersection.GetData()
pointsIntersection = pointsVTKIntersectionData.GetTuple3(0)