作者YENJJJ (人生苦短)
看板Cad_Cae
标题Re: 叫AutoCAD画sin- 函数图形的程式
时间Mon Oct 17 08:37:18 2005
※ 引述《sjgau (sjgau)》之铭言：
我也来贴我的sine 不过好像可以直接用sin比较快喔....
(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)
)
: ; 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)
--
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