Find drawing extents

[Tiger]

funny....I can't find it in either AutoCAD Help or Express on 2008 - but it does recognize it as a command...

[Lee Mac]

The link asks for a password/username..

 

ah, yeah, you would need to be a member of theSwamp.

 

Found the code on here, but not sure if its the latest version...

 

http://www.cadtutor.net/forum/showpost.php?p=148120&postcount=6

[lpseifert]

The actual command is Boundary, bpoly is an alias.

[ReMark]

Well as it turns out the OP wasn't talking about Bpoly either. Go figure. Don't you just love these vague questions?

[Lee Mac]

Well as it turns out the OP wasn't talking about Bpoly either. Go figure. Don't you just love these vague questions?

 

I feel the posted drawing was a good explanation of his/her goal.

[Tiger]

I feel the posted drawing was a good explanation of his/her goal.

 

If you are right, then the lisp you posted should work.

[M76]

I've found the solution.

 

1: run a region command on all drawing objects (lines/polylines)

2: take the union of the created regions

 

The result will be one single region object which is the peremiter of the drawing even if it consists of multiple subparts.

[lpseifert]

Civil 3D (maybe other verticals?) has a command _AecLineworkShrinkwrap that does what he wants to accomplish... real similar to ECO.

[M76]

MAP 3D doesn't have the shrinkwrap command.

I've tried ECO but it didn't do anything, possible it only works on closed objects?

[ReMark]

Lee: get your glasses. Compared to the examples over at the Swamp (see reference to eco 1.1.lsp) the posted image doesn't reflect nearly the same thing. You have been out too late partying. LOL

[M76]

Now that I have the solution I want to do it in a script, because its needs to be done on about 4000 dwg files.

 

The problem that I have, is I can't get autocad to close a drawing file without saving.

 

I've tried:

 

(vla-close (vla-get-activedocument (vlax-get-acad-object)))

 

result: error drawing is active

 

simple close command: it overwrites the drawing without question

 

(command "_VBASTMT" "ThisDrawing.Close")

 

it overwrites the drawing without question

 

(command "_VBASTMT" "ThisDrawing.Close, false")

 

it doesn't overwrite the drawing but still saves it as 0.dwg

[Lee Mac]

Lee: get your glasses. Compared to the examples over at the Swamp (see reference to eco 1.1.lsp) the posted image doesn't reflect nearly the same thing. You have been out too late partying. LOL

 

I'm not sure that I agree with that - the image depicts the retrieval of the outlying perimeter, and that is the purpose of ECO.

[ReMark]

Then I misunderstood its purpose as demonstrated. I thought I saw an animation that depicted various shapes overlapping one another and the user picks a point inside and the program trims the shapes out to leave a boundary. My mistake.

[Lee Mac]

The ECO program will just retrieve the continuous polyline that bounds the selected shapes (assuming there is one), whether the original shapes are deleted is left to the user.