[编程申请]：讨论！讨论！！！讨论！！！讨论！！！

yunkuaile

(defun c:test12_1()
   (setq pt1 (getpoint "\nオ?à翴: "))
   (setq len (getdist pt1 "\n块?娩?A: "))
   (setq dd (getdist pt1 "\n块?禯瞒B: "))
   (setq dd2 (sqrt (* (* (/ dd 2) (/ dd 2)) 2)))
   (setq pt2 (polar pt1 0 len))
   (setq pt3 (polar pt2 (/ pi 2) len))
   (setq pt4 (polar pt3 pi len))
   (setq pt1_a (polar pt1 0 dd2))
   (setq pt1_b (polar pt1 (/ pi 2) dd2))
   (setq pt2_a (polar pt2 (/ pi 2) dd2))
   (setq pt2_b (polar pt2 pi dd2))
   (setq pt3_a (polar pt3 pi dd2))
   (setq pt3_b (polar pt3 (* pi 1.5) dd2))
   (setq pt4_a (polar pt4 (* pi 1.5) dd2))
   (setq pt4_b (polar pt4 0 dd2))
   (setq pp1 (inters pt1_a pt3_b pt2_b pt4_a))
   (setq pp2 (inters pt1_a pt3_b pt2_a pt4_b))
   (setq pp3 (inters pt3_a pt1_b pt4_b pt2_a))
   (setq pp4 (inters pt4_a pt2_b pt1_b pt3_a))
   (setq cen (inters pp1 pp3 pp2 pp4))
   (command "pline" pp4 pt1_b pt1 pt1_a pp1 "")
   (command "array" (entlast) "" "p" cen 4 "" "")
   (command "polygon" 4 cen "c" pp1)
)


(defun c:test12_2()
   (setq pt1 (getpoint "\nЖàユ翴: "))
   (setq ang (getangle "\nà?A: "))
   (setq rr (getdist pt1 "\n蛾?畖R: "))
   (setq pt2 (polar pt1 pi (* rr 2)))
   (setq pt3 (polar pt1 (+ pi ang) (* rr 2)))
   (command "line" pt1 pt2 "")
   (setq en1 (entlast))
   (command "line" pt1 pt3 "")
   (setq en2 (entlast))
   (command "circle" "t" pt2 pt3 rr)
   (repeat 2
      (setq cen (cdr (assoc 10 (entget (entlast)))))
      (setq rr2 (cdr (assoc 40 (entget (entlast)))))
      (setq dd (/ (distance cen pt1) 2))
      (setq ang1 (angle cen pt1))
      (setq pp1 (polar pt1 pi dd))
      (setq pp2 (polar cen ang1 rr2))
      (setq pp3 (polar pt1 (+ pi ang) dd))
      (command "circle" "3p" "tan" pp1 "tan" pp2 "tan" pp3)
   )
   (command "erase" en1 en2 "")
)