I have a call out on a print from a plane to an ellipse created from an angled plane and a cylinder. The point called out is the point nearest the plane. Hope I'm making some sense. Thanks.
vpt.se, CROSS is the cross product (The cross product of 2 vectors yields a vector perpendicular to both of the original vectors). He's taking the cross product of the vectors of PLN2 and the CYL1 to get a vector perpendicular to both of those vectors. Then he is taking the cross product of this resulting vector and PLN2's vector to yield a vector perpendicular to both of those (this is the vector of the line that would lie in PLN2 and pass thru the min and max points on the ellipse. And assuming the ellipse was already created, he's creating a generic line with the created vector that passes through the center of the ellipse.
This is a slick way of doing this
JEFMAN! Thanks for the example!