UVW Unwrap and Inverted faces.

#1

Hi all, this is my first attempt at really getting a model done. Inspired my SG-A I decided to make my own puddle jumper. I will try to be as straight forward as possible. I’m using 3DS Max 2012 64bit.

Now the problems I have found but can’t find fixes for, if they need fixes, are;

In Polygon object mode I see 149 Flipped UVW faces.
http://i466.photobucket.com/albums/rr23/jukesie/CGSociety01_zps0edcc39c.jpg

In UVW Unwrap level I see 748 Flipped UVW faces.
http://i466.photobucket.com/albums/rr23/jukesie/CGSociety02_zps6a81d8bf.jpg

Why is the stretching so messed up and will that matter on final rendering?

Second issue i’m having is in the UVW Unwrap window. Here you can see that most of my faces are inverted. When I try to flip or rotate these faces and stitch they are messed up and impossible to make sense of.
http://i466.photobucket.com/albums/rr23/jukesie/CGSociety03_zpsbf5555f1.jpg

Lastly when I pack these faces that are already set and organized one of the panels/facesets seems to disappear completely and renders as a blank face, as seen on the 3D image.
http://i466.photobucket.com/albums/rr23/jukesie/CGSociety04_zpsbe1c54f4.jpg

So are these issues fixable or are they necessarily bad?

Thank you for your time.

#2

What method are you using to unwrap your faces? I’m guessing “flatten mapping” based on your screenshots? TBH, I never get good results from that, and usually avoid it like the plague unless I absolutely need it.

Flipped UV faces shouldn’t give you any problems as far as rendering goes, but it might make applying textures a nightmare since you’re going to have inverted textures on those faces.

Judging from your model, you can probably get away with fairly simple UV techniques, I would do a cylindrical map for the outer faces of the model, then a couple of planar maps for the front, back, and bottom if there is one.

You will have to do a bit of cutting seams and relaxing, and maybe some re-stitching, but you should be able to get a nice clean, easy to read UV map without flipped faces with a little time and effort :wink:

#3

Thank you for the reply.

Yes Flattern mapping is what i’ve used, just because it’s the one most tutorials point you to. But then the one commonality of those tutes is that they are simple box models. Maybe that is my problem.

Relaxing never goes well for me, but perhaps I will try it again.
Thank you again.

#4

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