[vtkusers] how to find multi intersect points using vtkCellLocator::IntersectWithLine()

[Di Wang]

Hi all-

When I use vtkCellLocator::IntersectWithLine() to find the intersect points of a 3D line and a 3D surface, it only returns the coordinates of one point even when there are multi intersect points. I tried to read from IntersectWithLine() one more time, it still returns the same point (the first one). Anybody has some experience to handle this?

Thanks a lot,
Dean
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