(defun miPt (/ mlent ent entl nm la pt1 pt2 dist ang pt3)
(setq mlent (car (entsel "\nSelect mirror line: "))
ent (car (entsel "\nSelect object:"))
)
(setq entl (entget ent))
(setq pt1 (cdr (assoc 10 entl))
)
(setq pt2 (vlax-curve-getClosestPointTo mlent pt1))
(setq dist (distance pt1 pt2)
ang (angle pt2 pt1)
)
(setq pt3 (polar pt2 (+ ang pi) dist))
)
Has this anything to do with matrix calculation? I seen that term often... but never really used any of it.