(SETQ BX (GETDIST "\nEnter Around Space 输入四周间隔:")
OLDL (GETvar "CLAYER")
OLDS (GETvar "OSMODE")
AL1 (/ PI 2) AL2 (- AL1))
(COMMAND "ZOOM" "E" "REGEN")
(SETQ PX (GETvar "EXTMIN") PY (GETvar "EXTMAX")
P1 (POLAR (POLAR PX PI BX) AL2 BX)
P2 (POLAR P1 AL1 (+ (- (CADR PY) (CADR PX)) BX BX))
P3 (POLAR P2 0 (+ (- (CAR PY) (CAR PX)) BX BX))
P4 (LIST (CAR P3) (CADR P1)))
(SETvar "OSMODE" 0)
(COMMAND "LAYER" "M" "BORDERLINE" "C" "6" "" ""
"LINE" P1 P2 P3 P4 "C" "LAYER" "S" OLDL "" "ZOOM" "E")
(SETvar "OSMODE" OLDS)
)(DEFUN C:DELBORDER ()
(SETQ SS (SSGET "X" (LIST (CONS 8 "BORDERLINE"))) SL (SSLENGTH SS))
(IF (> SL 0)
(COMMAND "ERASE" SS "")
(PRINC "\nCon't found any Entitil. 未找到任何实体。")
)
(PRINC)
)
(PRINC) 行是行了，但是还有一个小问题就是比我想要的距离还大了一点点哦，比如说我想要40但是出来后有40.22还有就是我不想改变图层。就这两个问题望楼主帮忙改进。多谢了！！！！ 对模切板的边框来说这么点误差不算什么，为了程序运行快，采用了最简捷的算法。如果采用全图图元遍历，运行速度将非常慢。另外，改变图层是为了要删除时较易操作。不然后面的命令DELBORDER就无效了。如果想要不变颜色，可以将：(COMMAND "LAYER" "M" "BORDERLINE" "C" "6" "" ""<BR> "LINE" P1 P2 P3 P4 "C" "LAYER" "S" OLDL "" "ZOOM" "E")<BR>改为：<BR>(COMMAND "LAYER" "M" "BORDERLINE" ""<BR> "LINE" P1 P2 P3 P4 "C" "LAYER" "S" OLDL "" "ZOOM" "E")<BR>若要画的边框为封闭的多义线，可改为：<BR> (COMMAND "LAYER" "M" "BORDERLINE" ""<BR> "PLINE" P1 P2 P3 P4 "C" "LAYER" "S" OLDL "" "ZOOM" "E")<BR> 多谢楼主指点迷津。
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