『请问』如何通过一个圆弧或圆来取得于其相交的物体

yqwzx

如何通过一个圆弧或圆来取得于其相交的物体？
就是说从图中选择一个圆或圆弧。来取得图层名为wall的和这个圆或圆弧相交的物体？
谢谢了

meflying

可以用小线段近似的方法，也可以用判断焦点的方法。

如果图中有大量图元，则前者比较合适，如果需要十分精确，则可以用后者

yqwzx

谢谢斑竹，再问一下判断焦点怎么用啊，我不会啊。教教我。谢谢

刘晴

hao

刘晴

第一次来多多关照

龙龙仔

yqwzx发表于2003-12-11 23:59:00『请问』如何通过一个圆弧或圆来取得于其相交的物体
如何通过一个圆弧或圆来取得于其相交的物体？
就是说从图中选择一个圆或圆弧。来取得图层名为wall的和这个圆或圆弧相交的物体？
谢谢了

FASTSELECT
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Creates a selection set of objects that touch the selected object.

The behavior of FASTSELECT can be controlled with the command FSMODE. If FSMODE is set to ON (the default), FASTSELECT selects only those objects that are touching the selected object. When FSMODE is OFF, FASTSELECT selects all the objects that are touching the selected object as well as any objects that are touching those objects. The command continues down the chain of unselected objects that are touching the selected object until no more unselected objects are visible on screen.

Note:
FASTSELECT selects only lines, polylines, lightweight polylines, circles, arcs, attribute definitions, text, mtext, ellipses, and images.

Tip:
You can use FASTSELECT at the command line and (transparently) in many commands.

Command: 'FS
Select touching object: Select an object

Command: 'FSMODE
FASTSEL chain selection <OFF>: Enter ON or OFF

meflying

又是ET工具吧，这个工具我怎么就是装不上，
以前装过一次，也没装上，但一打开某可图，就自动装好了。
这次我再打开那个图，可还是没有用了，有什么办法手动装载吗？

yqwzx

呵呵，谢谢，全是英文，还好我有金山快译。