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The x axis is the same, but y points north in Orbiter. In addition, Orbiter uses a left-handed system, so if you swap y and z values, that should get you closer. But you say z is parallel to the Earth's axis, where in Orbiter, the global frame is referenced to the ecliptic, not the Earth's...

ACS, thanks for answering the original question. Regards

I'll see your TRS-80 and raise with the PDP-11. Punched paper tape drives! Programming in assembly! Regards

I agree with these points. The fact that the msh file looks kosher when you open it suggests that the encryption/decryption method depends on Orbiter being able to open the msh file and load it. Then the decryption would occur by altering the vertices directly through the mesh handle. The...

This is my biggest concern. Not only has he protected meshes from further use, he also has incorporated many "free contributions" into AMSO. Again, I hope to be proved wrong. Regards

Yes, this is a valid method, decrypt the file into a temporary file, then load it, then delete it. The funny thing is that the encrypted .msh file looks like a valid .msh file (you can open it with notepad, looks fine, etc.) Regards P.S. sorry, Cornflake to keep hijacking your thread...

Yes, that's it. Regards

This is completely intentional, as far as I can tell. One possibility is that these meshes are part of a commercial ($) Apollo simulator development effort (otherwise, why spend any time protecting them?). I hope I'm wrong, but it all seems so strange. I had never thought of encrypting meshes in...

I'm thinking in another direction. I don't think you would need for the Orbiter base code to even be aware that the mesh was encrypted. I've done some coding using the Orbiter API, and basically, what you do is tell the Orbiter API the filename of your mesh, and it handles everything from there...

If the Shuttle ever lands at Ambely, I promise I'll fly down to Panama to make sure I get photos of the Shuttle going through the canal. Regards

No worries, i just thought the discussion properly belongs in the Add-on Developers forum. And if the AMSO encryption method is not made public, I think I can come up with a method of my own, which I intend to share. Regards

Sorry to hijack the thread, I started a new thread here: http://orbiter-forum.com/showthread.php?t=894 Regards

I just discovered that the AMSO add-on scrambles the .msh files so they can not be used by any other add-on, or in any other application, for that matter (from a thread in the "General" forum). Is there documentation for how this is accomplished, so that I could protect my work in the same...

So, how do I scramble the meshes in my add-ons so nobody else can use them? Regards

I would recommend trying out AC3D. It's not free ($80), but it has a 14 day free trial period. After trying out anim8or and Blender, I was not satisfied with the results, and eventually found AC3D. There are free Orbiter .msh import and export add-ons available, which work well. Applying...

Ok, now I've got it, Luis W. Alvarez. Regards

William H. Pickering? Regards

My turn, Here's a link to over 10,000 NASA acronyms: http://www.sti.nasa.gov/acronym/main.html Regards