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Full Version: export for use in 3d studio?

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From: falcon76
15 Feb 2008   [#5] In reply to [#4]
Yes you are right. I know that Max has some problem with N-gons in OBJ.
I'm trying to refine the export in moi, I'm a totally newbie.
In any case thanks for the link of the plugin (and thanks to Guruware).
Unbelivable that a free plugin is better than a commercial software.
Now Autodesk as acquire Alias, hope this help with OBJ import!

Bye
Luca
From: jna
15 Feb 2008   [#6] In reply to [#4]
Ok, did some more testing after installing that free Max-plugin you mentioned.
It seems as if that, combined with using quads and tris instead of N-gons, did the trick!

Impressed with the quick help I got. Thanks!


/J
From: Michael Gibson
15 Feb 2008   [#7] In reply to [#6]
Hi jna, you are welcome! I am glad that you have a good method for data transfer now.

If you run into more problems please let me know.

- Michael
From: jna
16 Feb 2008   [#8] In reply to [#7]
Just for the record: "Weld vertices along edges" alwas messes it up for me. If i leave that off, and just go for Quads and Triangles, the result is good most of the time.

/J
From: Michael Gibson
16 Feb 2008   [#9] In reply to [#8]
Hi jna, thanks for mentioning that, that can help some others in the future.

When that welding option is checked, the OBJ file that is created will be more complex in a certain sense because it will have faces that share a single 3d vertex, but have unique entries for uv and vertex normal for each face.

Some programs don't allow faces to carry independent information on them like this. So when they see "per-face" information they have to do something to try and reorganize it.

Welding turned off basically avoids this situation - adjacent faces will either share all information in common (3d pt, uv coordinate, and normal), or none instead of partial sharing.

- Michael
From: Nick (BODINI)
20 Feb 2008   [#10]
FYI: Changing the File>Export>Obj>Meshing Options>"Divide larger than: [#]" pull-down to 'All', fixed ALL my problems. :-)
From: jna
20 Feb 2008   [#11] In reply to [#10]
I tried that just now, and that seems to be a winner!

Another, I guess more expensive way to deal with the import situation, is running Npower-RhinoToMax.
An import plugin, that lets you open 3dm files from within 3dsMax. A nice feature is that it lets you quickly 'chamfer all edges'.
Could save you some time.

/J
From: Frenchy Pilou (PILOU)
20 Feb 2008   [#12] In reply to [#11]
you have an export file format 3ds direct from Moi ;)
From: jna
20 Feb 2008   [#13] In reply to [#12]
It was immediately after trying that, my search for an alternative began..
From: Michael Gibson
20 Feb 2008   [#14] In reply to [#12]
.3ds is a very old and limited format.

It is not able to contain vertex normal smoothing information, can only have triangles in it, and is limited to 65535 vertices or faces in a single mesh piece.

It's generally something you should use only as a last resort if there is no other choice.

- Michael

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