How to check if an octant is inside, partially inside, or outside the polydata?

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1

How to check if an octant is inside, partially inside, or outside the polydata?

2

You can use vtkSelectEnclosedPoints if your polydata forms a closed surface.

3

can you share the code?
I am not getting it still now
my approach was to check all 8 vertexes of the octant and if all are inside the octant is inside otherwise partially outside or outside.
but not getting the correct output from it.