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    Re: Quick way to mirror-image a model? —Don Heyse
   (...) Talking to myself... Here's what I'm talking about. Completely ripped off from the MLcad.ini file. (URL) one contains an entry every part in my parts.lst file. It needs to have the changes made for the exceptions, but here's how it starts. ; ; (...) (20 years ago, 18-Jun-04, to lugnet.cad)
   
        Re: Quick way to mirror-image a model? —Steve Bliss
   (...) [...] (...) I think I've got a more general solution, but first a quick thought: You could make mirror.ini more human-readable if the 'normal' parts were just flagged. Something like: 2546.DAT default 41770.DAT exception 41769.DAT 0 1 0 0 0 1 (...) (20 years ago, 18-Jun-04, to lugnet.cad)
   
        Re: Quick way to mirror-image a model? —Don Heyse
     (...) Actually I was thinking of deleting them from the file to make it smaller. The only problem is remembering which ones were deleted and which ones are new at update time. I'm not sure how to automate additions either way. Probably have to use (...) (20 years ago, 18-Jun-04, to lugnet.cad)
    
         Re: Quick way to mirror-image a model? —Steve Bliss
     (...) Keep a full.mirror.ini, with all the default entries. A simple grep drop the extra lines, giving us mirror.ini. (...) Well, it depends entirely on whether or not applying two mirroring transformations always gives an un-mirrored result. If (...) (20 years ago, 21-Jun-04, to lugnet.cad)
    
         Re: Quick way to mirror-image a model? —Don Heyse
     (...) Or generate a parts.lst (and stash it somewhere) before adding parts, then diff it with the new parts.lst. I'm not sure how grep fits into your plan though... (...) My math intuition says it should be. There are only two choices for the sign (...) (20 years ago, 21-Jun-04, to lugnet.cad)
   
        Re: Quick way to mirror-image a model? —Don Heyse
   (...) Err, Shouldn't that be (-1 0 0 0 1 0 0 0 1)? You have to negate the X coordinate to mirror across the Z axis. Don (20 years ago, 21-Jun-04, to lugnet.cad)
   
        Re: Quick way to mirror-image a model? —Steve Bliss
   (...) Sorry, I misunderstood the terminology. I figured you could either mirror across a plane, or along a line. You can't mirror across a line - it's 1D. So I assumed when people were writing about mirroring 'across the Z axis', they meant to use (...) (20 years ago, 21-Jun-04, to lugnet.cad)
   
        Re: Quick way to mirror-image a model? —Don Heyse
   (...) Heh, I was thinking 2-dimensionally. It's easier for my tired old brain. All my sketches were happening on the XZ plane so mirroring across the Z axis made total sense to me. Oh well. (...) Ok, now I have to follow through and actually make a (...) (20 years ago, 21-Jun-04, to lugnet.cad)
 

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