Login Action Required

The NinevehGL Forum uses a new concept of "socialized forum" or as we like to say "Tweet Forum".


Here is the deal:
  1. No new registration is required. Just sign in with your Twitter account and authorize the NinevehGL Forum.
  2. Once you’re in, you'll be able to "Follow a Thread", that means every time that thread receive a new post or update you'll receive a mention on your twitter.
  3. Besides, you can enable "Auto Share", then every new post and/or thread you make will be tweeted on your timeline. (By default, auto-share is enabled only for your threads)

Forum Rules:

1. We understand human comunication can become "hot" sometimes. So some insults and bad words ARE allowed. Just don't push too much being an asshole all the time.

2. SPAMMERS are not allowed. There are penalties for this kind of user and they can be banned forever.

3. You can report other users, if you judge necessary. An user reported many times by many people can also be banned forever. However you can also receive penalties for report deliberately for no apparent reason.

If there is a similar thread title, make sure the other one doesn't already have the answer you're looking for.

This forum uses the BBCode (Bulletin Board Code), here are some instructions:

Bold: [b]text[/b]
Italic: [i]text[/i]
Underline: [u]text[/u]

Code: [code]text[/code]
Quote:
[quote=@username]text[/quote]
[quote]text[/quote]

List:
[ul] [*]item [/ul]
[ol] [*]item [/ol]

URL:
[url]http://url.com[/url]
[url=http://url.com]text[/url]

Image:
[img]http://imageurl.com[/img]

Embed (videos, code, 3D):
[embed]http://url.com[/embed]

Welcome to the NinevehGL's world!
NinevehGL is a 3D engine forged with pure Obj-C.
Welcome to the
Forum!
Hello, Guest.

Your current vote:

You can change your vote many times. But it's still one single vote.

Inversed faces with an .obj mesh
Vote this thread:


@syfonseq

Posts: 5

NGLNewbie

Wed, Feb 13 2013


Hi,

I try to import an .obj file quite complicated (790.000 faces). Their faces are triangles. But some faces are not visible whereas they are in Blender. In NinevehGL, the orientation of the faces seems inversed. They are visible if we look at the opposite angle where they are supposed to be. I'm not sure to be very clear

Screenshot:
http://s11.postimage.org/jsuu4vpxf/Screenshot_2013_02_13_16_44_14.png

Is the problem come from the mesh, the export in obj or NivevehGL? Any idea to resolve this?

Thanks a lot for your answers.
0% like this - 0/0

@dineybomfim

Posts: 571

NGLAdmin

Wed, Feb 13 2013


In response to: @syfonseq

Hi,

This is what you need:

nglGlobalFrontAndCullFace(NGLFrontFaceCW, NGLCullFaceNone);
nglGlobalFlush();


or this:

nglGlobalFrontAndCullFace(NGLFrontFaceCW, NGLCullFaceFront);
nglGlobalFlush();


Depends on your goal.
0% like this - 0/0

@syfonseq

Posts: 5

NGLNewbie

Fri, Feb 15 2013


In response to: @dineybomfim

Thank you for your answer Diney.

I tried several combinations of the values for nglGlobalFrontAndCullFace() and the best I had is this:
http://s8.postimage.org/wqpdhbf51/Screenshot_2013_02_15_17_24_56.png

The faces are black now. With the others values, the faces are still "inversed". Why some faces works well but not these ones?
0% like this - 0/0

@syfonseq

Posts: 5

NGLNewbie

Mon, Feb 25 2013


In response to: @dineybomfim

Hi,

I'm still stuck with this problem... Can you give me some hints on how to prepare mesh better to be well parsed in Nineveh.gl?

Thank you for your work and your answer
0% like this - 0/0
Technology

NinevehGL is a 3D engine built right on top of OpenGL ES and it uses all the programmable pipeline power, making it easy for you to create great application with shaders.

Share on


Follow NinevehGL
Fastest way to contact us:

Copyright © 2011 db-in. All rights reserved.