)
;;;-----------------------------------------------------------------------------------;
(arxload "geom3d" nil)
(princ "\n3DThread 已加载。 ")
(princ)
三、弹簧源程序
(defun errMsg (s) ; 当命令执行时出现错误
; 例如用户按下了CTRL + C
(if (/= s "Function cancelled")
(princ (strcat "\nError: " s))
)
(setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
(setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
(setq *error* olderror) ; 恢复旧的错误处理
(princ)
)
(defun spring (nRepeat cntPoint bhfac lr strad bvfac
/ angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
(setvar "blipmode" 0) ; 关闭 blipmode
(setvar "cmdecho" 0) ; 关闭 cmdecho
(setq Pi2 (* 3.14159265 2))
(setq aGrw (/ Pi2 lr))
(setq dhGrw (/ bhfac lr))
(if bvfac (setq dvGrw (/ bvfac lr)))
(setq angle 0.0)
(if bvfac
(setq distnc strad dv 0.0)
(setq distnc 0.0)
)
(if bvfac
(command "3dpoly") ; 开始绘制弹簧
(command "pline" cntPoint) ; 从基点开始绘制弹簧
)
(repeat nRepeat
(repeat lr
(setq tp (polar cntPoint (setq angle (+ angle aGrw))
(setq distnc (+ distnc dhGrw))
)
)
(if bvfac
(setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
dv (+ dv dvGrw)
)
)
(command tp) ; 继续输入下一点
