Christian Froeschlin <chr### [at] chrfrde> wrote:
> However, if the object changes for two neighboring rays it can either
> be an intersection, two objects that are "touching" or one object that
> is in front of another object (the latter case can be mostly filtered
> by checking how close the two ray "hit points" are in 3d space).

POV-Ray knows if a ray is inside an object at a certain point (or at
least can resolve it.) Therefore if a ray intersects two objects, it
can determine of one of the intersection points is inside the other
object.

Using two adjacent rays to try to determine the intersection line between
two surfaces still sounds a bit error-prone. If the first ray intersects
both objects, one being inside the other, and the other ray intersects
only one of the objects, which conclusion should be made from that?

-- 
                                                          - Warp

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