Two AutoCAD drawing comparison

[Anonymous]

Hi All,

I want to do some coding which will compare that 2 autocad drawings are identical or not? Can anybody help me in this regard. Hints with VB code will be appreciated.

Thanks and Regards

zakir

[Alexander.Rivilis]

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@Anonymous wrote:

I want to do some coding which will compare that 2 autocad drawings are identical or not? Can anybody help me in this regard. Hints with VB code will be appreciated.

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If you can explain in great detail what is "identical drawings", then you may be able to get help.

[Anonymous]

Suppose, I have one drawing. Now I make a copy of it.  Afterwards I delete few lines from it. I want to compare these 2 drawings whether they are similar or not? The comparison result should tell me that this is not similar. Because I have delete something from the copied drawing. If I do not delete any lines from the copied drawing, then the comparison should tell me  that two drawings are same. This is what I want to mean.

[Alexander.Rivilis]

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@Anonymous wrote:

... If I do not delete any lines from the copied drawing, then the comparison should tell me  that two drawings are same...

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If everything were that simple ...

1. What about you add new lines to drawing?

2. What about you change layer of lines?

3. What about you change color of line?

4. What about you combine some lines in block or group?

5. What about you change properties of dwg-file (Title, Subject, Author, Revision...)?

6. etc...etc..etc..

I try to explain how difficult this task in the general case.

[Anonymous]

You are right. Any change in the duplicated drawing should be reported and should give a message that drawings are not similar.

[Anonymous]

zakir,

IMHO Mr. Rivilis is trying to tell you this would be a HUGE, almost undoable task. If so I would agree with him.

as some would say ... "Your eyes are bigger than your wallet."

r,

dennis 

[Alexander.Rivilis]

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@Anonymous wrote:

zakir,

IMHO Mr. Rivilis is trying to tell you this would be a HUGE, almost undoable task. If so I would agree with him.

as some would say ... "Your eyes are bigger than your wallet."

r,

dennis 

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This is exactly that I wanted to say. But my English is not allowed so beautifully and laconically describe the situation.

Zakir. You can begin with this topic: http://www.theswamp.org/index.php?topic=39991.0

[Anonymous]

Yeah I understand that. This is why my first sentence was "You are right". First I only consider the drawing structure. That is why I was optimistic.

[Anonymous]

Thanks any way for your link 🙂

[jeff]

http://apps.exchange.autodesk.com/ACD/Detail/Index?id=appstore.exchange.autodesk.com%3adwgcompare%3a...