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Maybe try sorting your intersection points from the distance closest to the picked point?
(if (eq (getvar "measurement") 0) (setq Linf (findfile "acad.lin")) (setq Linf (findfile "acadiso.lin")))(if Linf (if (not (member "ACAD_ISO03W100" (mapcar 'strcase (ai_table "LTYPE" 4)))) (vl-cmdf "._Linetype" "_L" "ACAD_ISO03W100" Linf "") ))
There it is.....D H L I N EDynamic Hidden Line v.1.3...I've made many tests before posting.....