(defun part(d1 d T1/r T1 A x p1 p2 p3 p4 p5 p6 p7 p8 p9 p10 p11 p12 p13 p14 p15 p16 p17 p18 p19 p20 p21 p22 p23 p24 p25 p26
bp
bp1 bp2)
;(setq bp (getpoint "\n输入定位点："))
;(setq d1 20)
;(setq d 35)
;(setq T1 10)
(setq r (/ T1 4.0))(setq A (/ (- d d1) 2.0))
(setq x (sqrt (-(expt r 2.0) (expt (/ r 2.0) 2.0))))
(setq p1 (list(+ x (car bp)) (cadr bp)))
(setq p2 (list(+ (/ T1 2.0) (car bp)) (cadr bp)))
(setq p3 (list(+ (/ T1 2.0) (car bp)) (+ (/ d1 2.0) (cadr bp))))
(setq p4 (list(+ x (car bp)) (+ (/ d1 2.0) (cadr bp))))
(setq p5 (list(+ x (car bp)) (+ (- (+ (/ d1 2.0) (/ A 2.0)) x ) (cadr bp))))
(setq p6 (list(+ x (car bp)) (+ (+ (/ d1 2.0) (/ A 2.0) x ) (cadr bp))))
(setq p7 (list(+ x (car bp)) (+ (/ d 2.0) (cadr bp))))
(setq p8 (list(+ (/ T1 2.0) (car bp)) (+ (/ d 2.0) (cadr bp))))
(command "line" p1 p4 p5 "")
(command "line" p4 p3 p2 "")
(command "line" p3 p8 p7 p6 "")
(setq p9 (list(- (car bp) x ) (cadr bp)))
(setq p10 (list(- (car bp) (/ T1 2.0)) (cadr bp)))
(setq p11 (list(- (car bp) (/ T1 2.0)) (+ (/ d1 2.0) (cadrbp))))
(setq p12 (list(- (car bp) x ) (+ (/ d1 2.0) (cadr bp))))
(setq p13 (list(- (car bp) x ) (+ (- (+ (/ d1 2.0) (/ A 2.0)) x ) (cadr bp))))
(setq p14 (list(- (car bp) x ) (+ (+ (/ d1 2.0) (/ A 2.0) x ) (cadr bp))))
(setq p15 (list(- (car bp) x ) (+ (/ d 2.0) (cadr bp))))
(setq p16 (list(- (car bp) (/ T1 2.0) ) (+ (/ d 2.0) (cadr bp))))
(command "line" p9 p12 p13 "")
(command "line" p12 p11 p10 "")
(command "line" p11 p16 p15 p14 "")
(setq p17 (list(+ (+ (/ T1 2.0) (car bp)) ) (- (cadr bp) (/ d1 2.0))))
(setq p18 (list(+ x (car bp)) (- (cadr bp) (/ d1 2.0))))
(setq p19 (list(- (car bp) x ) (- (cadr bp) (/ d1 2.0)) ))
(setq p20 (list(- (car bp) (/ T1 2.0)) (- (cadr bp) (/ d1 2.0)) ))
(setq p21 (list(- (car bp) (/ T1 2.0)) (- (cadr bp) (/ d 2.0)) ))
(setq p22 (list(+ (/ T1 2.0) (car bp)) (- (cadr bp) (/ d 2.0)) ))
(command "line" p2 p17 p22 p21 p20 p10 "")
(command "line" p1 p18 p17 "")
(command "line" p9 p19 p20 "")
(command "line" p19 p18 "")
(setq bp2 (list(car bp) (- (cadr bp) (+ (/ d1 2.0) (/ A 2.0)) )))
(setq p23 (list(+ (car bp2) (/ T1 3)) (cadr bp2)))
(setq p25 (list(- (car bp2) (/ T1 3)) (cadr bp2)))
(setq p24 (list (car bp2) (+ (cadr bp2) (/ T1 3)) ))
(setq p26 (list (car bp2) (- (cadr bp2) (/ T1 3)) ))
(command "line" p23 p25 "")
(command "line" p26 p24 "")
(setq bp1 (list(car bp) (+ (/ d1 2.0) (+(/ A 2.0) (cadr bp)))))
(command "circle" bp1 r )
)