请明经的CAD高手帮忙！！！

ctclsc

请帮我编一个程序，要求如下：


1、可以预先设定圆的直径（7mm乘以图形的标注比例）


2、可以预先设定字高（3mm乘以图形的标注比例）


3、箭头、圆、字三个对象必须是一个整体


4、拉伸时箭头仍然通过圆的中心


比如：我的图形比例是10，那么我就可以预先设定圆的直径为70，字高为30

xqyhome

请说说箭头及直线的要求，如何拉伸？

xqyhome

请说说箭头及直线的要求，如何拉伸？

ctclsc

stretch命令

贱人

参考，这个有点像 ;本程序创建旁注线并将文字封在一个“气泡”里。
;如果字符少于3个，气泡是一个圆环，如果多于或等于3个字符，气泡是一个椭园。
;文本和气泡以同样角度延伸于旁注线，“气泡”放置到指定的层。 (defun C:qp
(/ tmp ts th nh ip sp ali le errexit bx acadver
LBLOCK BLAYER TEXTGAP CHARWIDTH BWIDTH)
(setq LBLOCK T) ;“气泡”创建为块，除非这里LBLOCK设为nil
(setq BLAYER "sdim") ;放置“气泡”的图层："XXXX"=放置在层XXXX，nil=使用当前层
(setq TEXTGAP 0.8) ;希望的文本和“气泡”的间距（1单位=尺寸文本高）
(setq CHARWIDTH 1.0) ;1个单位高字符的平均宽度（仅用于R11）
(setq BWIDTH 0.04) ;“气泡”线宽：nil=无宽度（1单位=尺寸文本高，如果气泡是椭圆，无效，且在R13中PELLIPSE=0）
(setq acadver (read (substr (getvar "ACADVER") 1 2)))
(if (/= (type acadver) 'INT) (setq acadver 0)) (defun errexit (s)
(princ "\n错误： ")
(princ s)
(restore)
) (defun bx ()
(if le (entdel le))
(setvar "CMDECHO" (car oldvar))
(setvar "BLIPMODE" (cadr oldvar))
(setvar "OSMODE" (nth 2 oldvar))
(setvar "CLAYER" (nth 3 oldvar))
(setvar "DONUTID" (nth 4 oldvar))
(setvar "DONUTOD" (nth 5 oldvar))
(setq *error* olderr)
(princ)
)
;Main Program
(setq T (not nil))
(setq olderr *error*
restore bx
*error* errexit
)
(setq oldvar
(list
(getvar "CMDECHO")
(getvar "BLIPMODE")
(getvar "OSMODE")
(getvar "CLAYER")
(getvar "DONUTID")
(getvar "DONUTOD")
)
)
(setvar "CMDECHO" 0)
(setvar "BLIPMODE" 0)
(setvar "OSMODE" 0)
(terpri)
(if (= acadver 11) ;是R11吗？ (defun textbox (elist) ;如果是，定义一个定制的文本框函数
(list
'(0 0 0)
(list
(* (strlen (cdr (assoc 1 elist))) (cdr (assoc 40 elist)) CHARWIDTH)
(cdr (assoc 40 elist))
0
)
)
)
)
(if
(= 0
(setq th
(cdr (assoc '40 (tblsearch "style" (getvar "textstyle"))))
)
)
(setq nh (setq th (* (getvar "DIMTXT") (getvar "DIMSCALE"))))
(setq nh nil)
)
(if BLAYER
(command "._LAYER"
(if (tblsearch "LAYER" BLAYER) "_S" "_M")
BLAYER
""
)
)
(if (setq ip (setq sp (getpoint "拾取旁注线起点： ")))
(progn
(entmake (list '(0 . "POINT") (cons 10 (trans sp 1 0))))
(setq le (entlast))
(command "._DIM1" "_LEADER")
(setvar "CMDECHO" 1)
(command sp)
(while
(progn
(initget 128)
(setq sp (getpoint sp))
)
(command sp)
)
(setvar "CMDECHO" 0)
(command)
(setq sp (trans (cdr (assoc '11 (entget (entlast)))) 0 1))
(setq ali (angle (trans (cdr (assoc '10 (entget (entlast)))) 0 1) sp))
(setq tmp (getstring T "键入文本： "))
(setq ts (textbox (list (cons '1 tmp) (cons '40 th))))
(setq ts
(list
(+ (- (car (cadr ts)) (car (car ts))) (* 2 TEXTGAP th))
(* 3 TEXTGAP th)
)
)
(command "._TEXT"
"_M"
(polar
sp
ali
(* 0.5 (if (<= (strlen tmp) 2) (cadr ts) (car ts)))
)
)
(if nh (command th))
(command
(if (<= (strlen tmp) 2)
'0
(rtd
(if
(and (< ali (* 3 (/ pi 2))) (> ali (/ pi 2)))
(+ ali pi)
ali
)
)
)
tmp
)
(if (<= (strlen tmp) 2)
(command "._DONUT"
(cadr ts)
(cadr ts)
(polar
sp
ali
(* 0.5 (if (<= (strlen tmp) 2) (cadr ts) (car ts)))
)
""
)
(command "._ELLIPSE"
sp
(polar sp ali (if (<= (strlen tmp) 2) (cadr ts) (car ts)))
(/ (cadr ts) 2)
)
)
(if
(and BWIDTH
(> BWIDTH 0)
(not (and (= acadver 13) (zerop (getvar "PELLIPSE")) (> (strlen tmp) 2)))
)
(command "._PEDIT" (entlast) "W" (* th BWIDTH) "X")
)
(if LBLOCK
(progn
(entmake (list
(cons '0 "BLOCK")
(cons '2 "*U")
(cons '70 1)
(cons '10 ip)
))
(setq th (setq tmp le))
(while (setq tmp (entnext tmp))
(entmake (entget tmp))
)
(setq tmp (entmake (list (cons '0 "ENDBLK"))))
(while (setq th (entnext th))
(entdel th)
)
(entdel le)
(setq le nil)
(entmake (list
(cons '0 "INSERT")
(cons '2 tmp)
(cons '10 ip)
))
)
)
)
)
(restore)
)