[求助]：新人一问：不知可有这样的一种工具？？

lsx194587

小弟这两天做以CAD为平台的地形图时，需要对图形做一些取舍但用栽剪命令很麻烦，不知可有其它方法。比如说：在一幅50*50的标准图幅中用矩形命令画出一个20*40的矩形框，对于矩形外的所有图形都不要，只保留矩形内的图形！！我现在只是将等高线一条条的栽剪，然后一起删除，但真的很累人！请高手帮忙！！谢谢

cdhua001

晓东工具——图形切割
晓东工具下载地址：http://p4.xdcad.net/down/show.php?s=&id=227
动画演示：（制作人：27182818284）
[swf w=800 h=600]http://p4.xdcad.net/forum/attachment.php?s=&postid=437646[/swf]

Joseflin

指令CLIPIT

jbgs

最初由 Joseflin 发布
[B]指令CLIPIT [/B]

请看清楚楼主的问题并搞清楚这个命令后再来发言，别再胡说八道了！！！

comechris

ET工具里面的命令
EXTRIM－扩展剪裁

nygh

最初由 jbgs 发布
[B]
请看清楚楼主的问题并搞清楚这个命令后再来发言，别再胡说八道了！！！ [/B]

反应这么强烈啊。。。呵呵，不过遇到回帖不看贴的确实令人郁闷非常。。。

ljk9089

转为图纸空间，然后切视口。一切ok

8210726

楼下说的不错，切视口确实是个好办法

lsx194587

谢谢cdhua001  ！！也谢谢楼上的各位！！发现晓东工具中的图形切割命令一用就死机，可能我的图太大了吧！！

7楼的ljk9089 兄可否说的更详细些，什么叫“切视口，怎么切？”

wuzz

如果是扫描图的话，可以用ESPWIN

zghzghzgh

怎么切视口？

Joseflin

CLIPIT
With CLIPIT you can use ARCS, CIRCLES, or POLYLINES to define clipping boundaries for BLOCKS, XREFS, IMAGES, and WIPEOUTS. Draw arcs, circles, and/or polylines to define area(s) to be clipped.

Pick a POLYLINE, CIRCLE, ARC, ELLIPSE, or TEXT object for clipping edge...
Select objects:  Use an object selection method.
Pick an IMAGE, a WIPEOUT, or an XREF/BLOCK to clip:  Select object to clip.
Enter max error distance for resolution of arcs <0.0200>:  Specify a resolution value or press ENTER.

CLIPIT makes clipping to curved boundaries possible by traversing arc segments with a series of short straight segments. CLIPIT lets you to control the precision with which it traverses arc segments by allowing you to specify the maximum distance between the midpoint of any given segment and the arc.

Maximum error distance for resolution of arcs:

Entering a large error value will result in fewer segments and faster AutoCAD performance, but arcs will appear less smooth. Conversely, entering a very small value will result in smooth clipping along arcs but places more of a processing burden on AutoCAD during regens.
Tip: To increase performance, enter relatively large values at the Max error distance for resolution of arcs prompt while creating your drawing. When you are ready to plot your drawing, use CLIPIT again and specify a small error value for arc resolution at the CLIPIT prompt.

Usage Example: Draw a polyline, circle, or arc, then clip a portion of an externally referenced floor plan to isolate it.

Select a circle as clipping boundary:

Select Xref:

Xref clipped with circle as clipping boundary:

kingtony8240

EXTRIM

Joseflin

CLIPIT

jbgs

楼上，看看命令提示吧：
命令: CLIPIT

正在初始化...
为剪裁边界拾取多段线、圆、椭圆或文字对象...
选择对象: 找到 1 个

命令:
拾取图像、隐藏区域或外部参照/块供剪裁...

你演示的符合条件，但楼主的是什么图形，你能肯定也是“图像、隐藏区域或外部参照”？