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 CAD / Development / 9045
  Proposed solution for mirrored parts and studs
 
It's obvious that there is a lot of interest in the problem of mirrored studs, based on the volume of traffic in the ongoing thread. I have a proposed solution to the problem. My proposal is the creation of a small tool that automatically fixes a (...) (21 years ago, 3-Jul-03, to lugnet.cad.dev)
 
  Re: Proposed solution for mirrored parts and studs
 
(...) As you write below you can open ANY file. If no studs are mirrored, then no action takes place. (...) In stead of referencing studmirr.dat, why not simply use a mirrored reference to stud.dat? (...) No, same code. (...) Right. (...) If all (...) (21 years ago, 4-Jul-03, to lugnet.cad.dev)
 
  Re: Proposed solution for mirrored parts and studs
 
(...) I'll look into that. I thought it would be easier to reference the other file, but thinking about it again, I guess I should be able to multiply the mirror matrix by the stud matrix to get the correct final matrix anyway. (Or would that be (...) (21 years ago, 4-Jul-03, to lugnet.cad.dev)
 
  Re: Proposed solution *Test Here*
 
OK, I have created a command line program to un-mirror studs. It is called UnMirrorStuds, and version 0.1 is available from the following location: (URL) download it and give it a try, and let me know what you think. I'd like to have people process (...) (21 years ago, 9-Jul-03, to lugnet.cad.dev)
 
  Re: Proposed solution *Test Here*
 
(...) I have tested your program against half a dozen files (including files with large mirrored sub-assemblies for wings and such) and the L3P generated renderings all showed the studs correctly. Well done. However, it doesn't work with -lgeo... (...) (21 years ago, 10-Jul-03, to lugnet.cad.dev)
 
  Re: Proposed solution *Test Here*
 
(...) That's good to hear. (...) Yeah. I was aware of that. The good news is that it should only be a problem in LGEO if you have mirrored sub-assemblies. Looking at the models I have downloaded over time, I discovered that most people don't do this (...) (21 years ago, 11-Jul-03, to lugnet.cad.dev)
 
  Re: Proposed solution *Test Here*
 
(...) Two reasons I can think of: 1) Inventories: If you build a submodel using a Left Wing, and then mirror it, the inventory is going to show 2 left wings, when in reality there is 1 left wing and 1 right wing. 2) Instructions: Official LEGO (...) (21 years ago, 11-Jul-03, to lugnet.cad.dev)
 
  Re: Proposed solution *Test Here*
 
(...) Thanks for the info. After further consideration, I realized that there is one other thing that will prevent the -lgeo option from working properly, even for models that don't have mirrored sub-assemblies. Any parts in the part library that (...) (21 years ago, 11-Jul-03, to lugnet.cad.dev)
 
  Re: Proposed solution *Test Here*  [DAT]
 
(...) Yes. No. ;-) There's still a problem with mirrored sub-assemblies. Suppose you have an aeroplane, Plane.ldr: 1 2 0 0 0 0 0 1 0 1 0 -1 0 0 2445.DAT 1 16 0 -8 0 1 0 0 0 1 0 0 0 1 Wing.ldr 1 16 0 -8 0 -1 0 0 0 1 0 0 0 1 Wing.ldr Wing.ldr: 1 4 -80 (...) (21 years ago, 19-Jul-03, to lugnet.cad.dev)

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