Quick mirror...

[rob.aHH2T8]

How can I mirror an object using two lines?  Many commands have variables, but mirror seems to have none.

Thanx!

[Kent1Cooper]

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@SEANT61 wrote:

....  Is the “concern expressed in Post 15” an issue?  The screen cast implies functionality that may be beyond the scope of the OP, but the implication exists nonetheless.  Future readers may have slightly different requirements.

....

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I agree -- I feel some degree of responsibility to future readers.  Look back at the original question itself, in Post 1, temporarily ignoring what has been learned subsequently.  When a future reader Searching the Forums with a similar need finds that, it is open to a far broader set of possible circumstances than just two vertical Lines.  We didn't learn about the OP's particular circumstances until Post 5, because people anticipated variability and asked for more detail.  Future readers will benefit from the concern having been pointed out, and can decide for themselves whether the simpler solution is adequate for their needs.

[john.uhden]

I did a little searching and found this from Anne Brown in 2001, but I found nothing about technical responsibilities, though there is a link for us to follow, but it appears to be a dead end:

"Gentlemen -

This is a reminder to all on the purpose of this newsgroup. Today
a user of this newsgroup strayed over into invective and what can
only be classed as bad manners, name calling and personal
attacks. Those messages have been removed.

This newsgroup is for _technical_ support of Customization.
Future messages that stray off that subject will be removed with
no notice. Personal attacks on other users of this newsgroup will
be deleted. 

See http://support02.autodesk.com/DiscussionRules.asp if you have
questions on our newsgroup guidelines.

Thank you for your future cooperation on keeping this forum to
technical discussions and for posting in a business like manner.
Posting here is a privelege which can be revoked if the very few
basic rules of decorum are not followed. If you have a personal
problem with another user, take it to email. 
---
Anne Brown
Manager, Moderator
Autodesk Product Support discussion groups
Discussion Q&A: http://www.autodesk.com/discussion"

[john.uhden]

I just Googled "autocad forum rules" and found this.

https://forums.autodesk.com/t5/character-generator-forum/forum-rules/td-p/4822399

Once again, I did not notice anything about technical responsibilities other than Autodesk holds itself harmless...

[SEANT61]

Without a doubt, the matter would simply be a personal sense of responsibility.  Neither Autodesk nor poster should fear legal action – the forum would lack serious participation.

 
If one of my postings contained an error, or was simply misleading, I think I’d rather have it pointed out.  Suffering the embarrassment of that correction, I think, would be less stressful than the notion of some poor ba$tard doing damage to their reputation via my input. 

[john.uhden]

Here here.

Then again. along with your error come accusations of inferiority by certain participants.  Oh well, as long as we all learn.

[rob.aHH2T8]

Interesting discussion you've had here.  My input is from my perspective and I appreciate both the thought that the first solution may have worked and that a little more inquiry found the perfect solution.  If forums are processes, then so be it... just like learning AutoCAD.

[john.uhden]

Sorta like if you want to learn to ride a bike you have to put up with skinning your knees.  That's what mommies and bandaids are for.  My brother had a unique way of teaching... skip the lesson on steering and just run into the curb.

[rob.aHH2T8]

Your concern is valid...  I tried to use the LISP for another application... mirror a vertical line instead of a angled one... and it didn't work...  I decided to check it with an angled line and it didn't work... Hmmm.  I wonder what changed?

[rob.aHH2T8]

I just now tried it in another drawing (other than the one it didn't work in) and it worked again!  Hmmmm?

[rob.aHH2T8]

I now pulled the vertical line mirror test into the drawing that the function worked in and it did mirror it but not to the center.

[ВeekeeCZ · Accepted solution]

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@rob.aHH2T8 wrote:

I now pulled the vertical line mirror test into the drawing that the function worked in and it did mirror it but not to the center.

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Your later posts are somehow confusing. Is it working as expected or not? And actually what is expected? 

BTW ever tried my routines from post #7. Does not they fit? Still seems to me that they could do what you need... 

They both do straight vertical mirroring, the first one between the selected points (probably better if your line ever be different then vertical), second presumes that both lines are vertical or almost and your selection lines using pickbox.

The routine should be as simple as possible to get predicable results. 

[rob.aHH2T8]

Confusing is the exact word... it confused me... I believe the drawing it doesn't work in is somehow different or corrupted.  However, I did try your MV2 and it worked in both!