众所周知,在天正中可直接绘制箭头,而在AutoCAD中不得。最近我发现一个在命令行直接输入命令就可画出你想要的尺寸的箭头的方法,具体实施如下: eaNMcC1
P LHiQ:
1、首先拷贝下列lisp程序,用ar为名以记事本格式保存,然后改后缀名为.lsp,作为一个lisp程序文件;程序如下: vh29mzum
C71\9K*X
(defun ureal (bit kwd msg def / inp) g`NJ
`
/b
]Yya#
(if def -chk\75
p`oSI}ZwB
(setq msg (strcat " " msg "<" (rtos def) ">: ") @d/Wa=K
Qj:`[#3?2
bit (* 2 (fix (/ bit 2))) ,m"0Bu2
-c_}^j
) CVk.Ez6
O4l]Q
(if (= " " (substr msg (strlen msg) 1)) .YYLMI
U&PwEh4uG
(setq msg (strcat " " (substr msg 1 (1- (strlen msg))) ": ")) {y>o6OTITR
j B.ZF7q
(setq msg (strcat " " msg ": ")) o?T01t=
,p3moD
3
) VH>?%aL
PF6w'T 5
) ]&oQ6
=~|:93]k
(initget bit kwd) B '@a36
n91@{U)QJ3
(setq inp (getreal msg)) #z.QBG@
*'BA#
/@
(if inp inp def) Hea76P5$P+
B#Q=Fo 6
) 8dBG ZwyET
<"}Gvi
(defun upoint (bit kwd msg def bpt / inp) dI$U{;t
>U%:Nfo3
(if def 2A,iY}R
+DpiX&^h
(setq pts (strcat a,EApUWw
=xf7lN'
(rtos (car def)) "i5Rh^
cD!yd^QE
"," xklXV
M8,_E\*
(rtos (cadr def)) .5ItH^
reU*apZ/
(if p,cw-lN
}BR@vY'd
(and (caddr def) (= 0 (getvar "FLATLAND"))) {&qB!axj
<dd(i
(strcat "," (rtos (caddr def))) b+6%Mu}o
kr=&x)Wy!
"" v})-:
Y*KHr`\C4
) P p]Ygt'u
!.^%*6f
) VvS ^f
'TdO6-X
msg (strcat " " msg "<" pts ">: ") ;OTd<
?)2&LVrf
bit (* 2 (fix (/ bit 2))) =ghN)[AZV
lY,dyNFHV
) #$dk
kpQXnDm2
(if (= " " (substr msg (strlen msg) 1))
=Eimbk
6Z,j^: B
(setq msg (strcat " " (substr msg 1 (1- (strlen msg))) ": ")) GQR|t?:t
U>@st="
(setq msg (strcat " " msg ": ")) Zd Li<1P*d
BB)(#yoi
) >bo_
chQCl3&e^
) "T?hIX/p_
$QbaPmHW
(initget bit kwd) .]IidsgM
cc
%m0p
(setq inp ahnQq9
VEtdp*ot
(if bpt 'Drz6K_KrP
~$@~X*K~
(getpoint msg bpt) .8I\=+Zi
Js706
(getpoint msg) c8"9Lv
7/:C[J4GTN
) W-ctx"9DS
z;F6:aBa
) ,Zs"r}G^
uv}?8$<\
(if inp inp def) C'a%piX
\]a@ NBv
) G5R"5d'
<$8`]e?I
(setq cm(getvar "cmdecho")) xKZLXQ'e-
l^ Q-KUI
(setvar "cmdecho" 0) 1J
tt\yq
HLa3lUo
(defun C:AR ( / #dwgsc w v pt1 pt2 pt3 ) /%P|<[<
[
O6gl[a ZN
(if(= arscl nil)(setq arscl 0.1875)) aSy^(WN8
qVpV ZH!
(setq #dwgsc(getvar "DIMSCALE") UUuB Rtau
|v[0(
W(getvar "PLINEWID") rda/
^@"EI|fsP
V(getvar "OSMODE") j-% vLL/
`wzb}"gLsM
L(getvar "CLAYER")) z3\WcW7|
(H/2{##
(setq arscl(ureal 7 "" "请输入箭头长度" arscl)) Qel2OI `b
U<