我想一段代码里面加入上次输入的默认值，请高手指教

Look_back · 发表于 2018-8-26 22:39

本帖最后由 Look_back 于 2018-8-26 22:42 编辑

(defun c:dbx( / newdbdist newdbdist1 cen )
(setvar "cmdecho" 0) ;指令执行过程不响应
(PRINC "\n画六边形工具)(PRINC)
(while T
(if (and newdbdist1 (/= newdbdist1 ""))
(progn
(setq newdbdist (/ (getreal （strcat "\n 请输入对边尺寸默认值：<" newdbdist1 ">")) 2))

为什么不能正常显示默认值，代码哪里有问题呢，我是初学者，请高手指点，万分感谢！

namezg · 发表于 2018-8-28 08:57

本帖最后由 namezg 于 2018-8-28 09:23 编辑

不就是给定中心点、对边画六边形吗？
(defun c:6b (/ newdbdist cen)
      (princ "\n功能：指定中心点、对边画六边形。")
      (setvar "cmdecho" 0)
      (if (not newdbdist1)
                     (setq newdbdist1 10.0)
      )
      (while (setq cen (getpoint "\n请指定六边形的中心点<退出>: "))
            (if  (not (setq newdbdist (getdist (strcat "\n请输入六边形的对边距离<" (rtos newdbdist1) ">: "))))
                              (setq newdbdist newdbdist1)
                              (setq newdbdist1 newdbdist)
            )
            (command "_polygon" "6" "non" cen "c" (/ newdbdist 2.0))
      )
      (setvar "cmdecho" 1)
      (princ)
)

Look_back · 发表于 2018-8-27 19:44

(defun c:6b ( / newdbdist newdbdist1 cen )
      (setvar "cmdecho" 0) ;指令执行过程不响应
   (PRINC "\n画六边形工具")(PRINC)
   ;(setq newdbdist1 9 )
   (while T
      (if  (and newdbdist1 (/= newdbdist1 ""))
   (progn
      (setq newdbdist (getreal (strcat "\n请输入对边尺寸默认值<" (rtos (* newdbdist1 2)) ">: ")))
   (if (= newdbdist nil)
      (setq newdbdist  newdbdist1)
      )
      )
(setq newdbdist (/ (getreal "\n 请输入对边尺寸:") 2))
         )
   (setq cen (GETPOINT "\n-->请指定中心 : "))
   (COMMAND "_polygon" "6" cen "c" newdbdist "")
   (setq newdbdist1 newdbdist)
   )
   (princ)
   )

Look_back · 发表于 2018-8-26 22:44

为什么代码显示不完整呢

Look_back · 发表于 2018-8-26 22:45

(defun c:dbx( / newdbdist newdbdist1 cen )
(setvar "cmdecho" 0) ;指令执行过程不响应
(PRINC "\n画六边形工具)(PRINC)
(while T
(if (and newdbdist1 (/= newdbdist1 ""))
(progn
(setq newdbdist (/ (getreal （strcat "\n 请输入对边尺寸默认值：<" newdbdist1 ">")) 2))

为什么不能正常显示默认值，代码哪里有问题呢，我是初学者，请高手指点，万分感谢！

Andyhon · 发表于 2018-8-26 22:50

默认值请搜寻
Uint
ureal
ustr
udist
...

等自定义函数

namezg · 发表于 2018-8-27 08:45

(defun c:dbx( / newdbdist cen)
(setvar "cmdecho" 0) ;指令执行过程不响应
(princ "\n画六边形工具")
(princ)
(if (not newdbdist1)
(setq newdbdist1 20.0)
)
(if (not (setq newdbdist (getreal (strcat "\n请输入对边尺寸默认值<" (rtos newdbdist1) ">: "))))
(setq newdbdist newdbdist1)
(setq newdbdist1 newdbdist)
)
(setq newdbdist (/ newdbdist 2.0))
)

lifuq1979 · 发表于 2018-8-27 15:44

Look_back 发表于 2018-8-26 22:45
为什么不能正常显示默认值，代码哪里有问题呢，我是初学者，请高手指点，万分感谢！

"\n画六边形工具

引号要成对
"\n画六边形工具"

Look_back · 发表于 2018-8-27 19:41

namezg 发表于 2018-8-27 08:45
(defun c:dbx( / newdbdist cen)
(setvar "cmdecho" 0) ;指令执行过程不响应
(princ "\n画六边形工具") ...

我把您的这段代码替换掉居然就OK了，感谢！ (setq newdbdist (getreal (strcat "\n请输入对边尺寸默认值<" (rtos newdbdist1) ">: ")))，这个(rtos newdbdist1) 我想让这个默认值放大2倍呢。

Look_back · 发表于 2018-8-27 21:50

namezg 发表于 2018-8-27 08:45
(defun c:dbx( / newdbdist cen)
(setvar "cmdecho" 0) ;指令执行过程不响应
(princ "\n画六边形工具") ...

这段代码还有缺陷，就是六边形对边尺寸问题，输入的是对边，但参数需要除2，怎么处理呢。

yshf · 发表于 2018-8-27 22:19

(defun c:6b ( / newdbdist cen zfc)
(setvar "cmdecho" 0)
(while (setq cen (GETPOINT "\n-->请指定中心<回车结束程序>: "))
(setq zfc (strcat "\n请输入对边尺寸<默认值 " (rtos (getvar "USERR1")) ">: "))
(if (= (setq newdbdist (getreal zfc)) nil)
(setq newdbdist (getvar "USERR1"))
)
(setvar "USERR1" newdbdist)
(COMMAND "_polygon" "6" cen "c" (* 0.5 newdbdist) "")
)
(setvar "cmdecho" 1)
(princ)
)

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[提问] 我想一段代码里面加入上次输入的默认值，请高手指教

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我想一段代码里面加入上次输入的默认值，请高手指教