"Samuel Benge" <stb### [at] hotmailcom> wrote:

>
> Or for more accuracy, make one line a plane. Use VPerp_To_Vector or
> Point_At_Trans to align the plane along the line and translate it to one of its
> endpoints. Then use trace().

It might be even easier, no V_Perp_To_Vector or Point_At_Trans needed : Let the
trace's initial 'position' (its "shoot-from" point) be the beginning point of
one line (call that the 1st line); then make a small-diameter cylinder for the
2nd line; then shoot a single trace ray toward the 1st line's end point (which
would be trace's "trace direction.") Voila! Trace will either hit the 2nd-line
cylinder and return its position, or it will not (and return <0,0,0> for the
normal--in which case, the two lines don't actually intersect.) The only
remaining detail is to add the cylinder's radius to the found point, for a
precise result. (Which will take some extra math, as the cylinder alignment will
most likely not be *perpendicular* to the trace ray; but using a *very
small*-diameter cylinder may make that computation unnecessary, from a practical
standpoint.)

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