hi,

ingo <ing### [at] tagpovrayorg> wrote:
> I'm looking for a solution that is 100% safe in detecting whether a point
> is outside an object. I want to count exactly on the surface as inside.

I probably completely misunderstood, or you will have have considered and
discarded the following already:

to see whether the red sphere is outside, when/where you get the NP on the
surface, slide the sphere along the perpendicular (to surface) by a small amount
and retest.  what have I overlooked?


regards, jr.

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