- ;;;****程序开始*****
- (defun c:ft ()
- (setvar "cmdecho" 0)
- (setvar "osmode" 0)
- (princ "\n提示:程序开始...按Esc键可结束.\n")
- (setq dx (getvar "screensize"))
- (setq kgb (/ (car dx) (cadr dx)))
- (setq hd (getvar "viewsize"))
- (setq vcen (getvar "viewctr"))
- (setq a (list (- (car vcen) (* hd kgb 0.5))
- (- (cadr vcen) (/ hd 2))
- )
- )
- (setq b (list (+ (car a) (* hd kgb)) (+ (cadr a) hd)))
- (setq pcen vcen)
- (setq r (* 2 (/ (abs (- (cadr a) (cadr b))) 10)))
- (setq a (list (+ (car a) r) (+ (cadr a) r))
- b (list (- (car b) r) (- (cadr b) r))
- )
- (setq ss (ssadd)
- n 0
- )
- (command "color" 1)
- (while (< n 10)
- (command "circle" pcen r)
- (ssadd (entlast) ss)
- (setq n (+ n 1))
- )
- ;;; (setq obj (entlast)
- ;;; e (entget obj))
- (xunhuan ss a b r)
- )
- (defun xunhuan (ss a b r / col n ang angs ang1 col)
- (setq angs (list 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1))
- (while T
- (setq n 0)
- (while (< n 10)
- (setq e (entget (ssname ss n))
- obj (ssname ss n)
- pcen (cdr (assoc 10 e))
- col (cdr (assoc 62 e))
- ang (nth n angs)
- )
- ;;; (setq f (polar pcen ang (/ r 100)))
- ;;; (setq e (subst (cons 10 f) (assoc 10 e) e))
- ;;; (entmod e)
- (command "move" obj "" pcen (polar pcen ang (/ r 100)))
- (setq pcen (polar pcen ang (/ r 100)))
- (if (or (> (car pcen) (car b))
- (< (car pcen) (car a))
- (> (cadr pcen) (cadr b))
- (< (cadr pcen) (cadr a))
- )
- (progn
- (setq pcen0 (polar pcen (+ ang pi) (/ r 100)))
- (cond ((inters pcen pcen0 a (list (car a) (cadr b)))
- (setq ang1 (- pi ang))
- )
- ((inters pcen pcen0 b (list (car b) (cadr a)))
- (setq ang1 (- pi ang))
- )
- (t (setq ang1 (- (* 2 pi) ang)))
- )
- (princ ang)
- (princ ang1)
- (setq angs (subst ang1 ang angs))
- (princ angs)
- (setq col (1+ col))
- (if (= 7 col)
- (setq col 1)
- )
- (command "change" obj "" "p" "c" col "")
- ;;; (setq e (subst (cons 62 col) (assoc 62 e) e))
- ;;; (entmod e)
- )
- )
- (setq n (+ n 1))
- ;;; (command "delay" "1")
- )
- )
- )
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