眾所周知,在天正中可直接繪制
箭頭,而在
AutoCAD中不得。最近我發(fā)現(xiàn)一個(gè)在命令行直接輸入命令就可畫出你想要的尺寸的箭頭的方法,具體實(shí)施如下:
VP[-BK[ iJ.P&T9 1、首先拷貝下列l(wèi)isp程序,用ar為名以記事本格式保存,然后改后綴名為.lsp,作為一個(gè)lisp程序文件;程序如下:
v$c*3H.seM y57]q#k (defun ureal (bit kwd msg def / inp)
[5K&J-W e=K2]Y Q{ (if def
5N
"fD{v{ ,0+%ji^V (setq msg (strcat " " msg "<" (rtos def) ">: ")
H%N!;Jz= VeK^hz
R^Z bit (* 2 (fix (/ bit 2)))
,4W|e! E +\?|q !T )
lg` Qi& &2IrST{d:V (if (= " " (substr msg (strlen msg) 1))
^9*FYV
Td