桩号标注的疑惑
 

桩号标注的疑惑
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桩号标注的疑惑
请高手研究下这段程序,在曲线上标注桩号时,怎样控制标注的方向,很多时候自动标注出来的方向同要求的方向相反.
(defun c:bz ()
(if (= (tblsearch "layer" "道路中心线") nil)
(command "layer" "m" "道路中心线" "c" 1 "道路中心线" "")
)
(if (= (tblsearch "layer" "道路桩号") nil)
(command "layer" "m" "道路桩号" "c" 7 "道路桩号" "")
(command "layer" "s" "道路桩号" "")
)
(setvar "cmdecho" 0)
(setq os (getvar "osmode"))
(setvar "osmode" 0)
(setq str_2 (strcat "\n给定文字高度<" (rtos (getvar "textsize") 2) ">:"))
(setq th (getreal str_2))
(if (= th nil) (setq th (getvar "textsize")))
(setq zk (getreal "\n给定文字宽度比例:<0.67>"))
(if (= zk nil) (setq zk 0.67))
(command "-style" "道路桩号" "仿宋" "" zk "" "n" "n")
(if (= nil (setq dist (getreal "\n给定间距<20m>:"))) (setq dist 20.0))
(if
(setq en (car (entsel "\n选择路径曲线:")))
(redraw en 3)
(*error* "\n没有选到曲线!")
)
(command "change" en "" "p" "la" "道路中心线" "")
;;删除原来标注
(command "layer" "f" "*" "")
(command "erase" "all" "")
(command "layer" "t" "*" "")
;;标注桩号间距

(setq nn 0)
(while
(setq pt1 (vlax-curve-getpointatdist en (* nn dist)))
(setq zhz (* nn dist))
(setq nn1 (fix (/ zhz 1000.0)))
(setq nn2 (- zhz (* 1000.0 nn1)))
(if (= nn2 0.0) (setq str_1 "+000"))
(if (and (> nn2 0.0) (< nn2 100.0)) (setq str_1 (strcat "+0" (rtos nn2 2 3) )))
(if (>= nn2 100.0) (setq str_1 (strcat "+" (rtos nn2 2 3) )))
(if (= (fix (/ nn2 100.0)) (/ nn2 100.0))
(setq str_1 (strcat (rtos nn1 2) str_1 ))
)

(setq ang (a-get-angle en pt1))
(setq pt2 (polar pt1 (+ (/ pi 2) ang) (* th 0.5)))
(setq pt3 (polar pt1 (+ (* pi 1.5) ang) (* th 0.5)))
(if (= (fix (/ nn2 100.0)) (/ nn2 100.0))
(setq pt4 (polar pt1 (+ (* pi 1.5) ang) (* th (* 1.65406 zk))))
(setq pt4 (polar pt1 (+ (* pi 1.5) ang) (* th (* 1.3582 zk))))
)
;;; (command "pline" p3 w "" 0.25 "" 0.25 "" pt2)
(command "line" pt3 pt2 "")
(setq ang2 (angtos (angle pt1 pt2)0 4) )
(command "text" pt4 th ang2 str_1 )
(setq nn (1+ nn))
)
(redraw en 4)
(setvar "osmode" os)
(princ)
)
;切线角度pt-ang
(defun a-get-angle(ename point / p1 v1 pt-ang)
(setq v1 (vlax-curve-getfirstderiv ename (vlax-curve-getparamatpoint ename point))
p1 (mapcar '+ point v1)
pt-ang (angle point p1))
pt-ang
)
d
已解决,呵呵!
d
这个程序怎么不能用啊？
d