; for theta=0 to 360 step dt do
(setq no 100)
(setq theta 0.0 dt (/ 360.0 no))
(setq dt (+ dt (/ dt 10.0)))
(setvar "cmdEcho" 0)
(command "pline")
(while (<= theta 360.0)
(setq t1 (* (/ theta 180.0) pi))
(setq y1 (sin t1))
(command (list t1 y1))
(setq theta (+ theta dt))
); end of while()
(command "")
(princ)
; 後面是註解
我的部落格 破 5000紀念
http://myblog.pchome.com.tw/sjgau/
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作者: YENJJJ (人生苦短) 看板: Cad_Cae
標題: Re: 叫AutoCAD畫sin- 函數圖形的程式
時間: Mon Oct 17 08:37:18 2005
我也來貼我的sine 不過好像可以直接用sin比較快喔....
(defun c:pt ( / ip p1 p2 l n w1 w2 w3 i x y y1 c k)
(graphscr)
(setq ip (getpoint "\n Input insertion point ip="))
(setq l (getdist "\n Input beam's length l="))
(setq n (getdist "\n Input how many points to draw:"))
(setq w1 (getdist "\n Input the sine frequency w1:"))
(setq k (getdist "\n Input the manitude:"))
(setq i (/ l n))
(setq p1 ip)
(setq x (car ip))
(while (<= x (+ l (car ip)))
(setq y (sin (* w1 x)))
(setq y (* k y))
(setq p2 (list x y))
(command "line" p1 p2 "")
(setq p1 p2)
(setq x (+ x i))
)
(redraw)
(princ)
)
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