Imported .obj file not showing textures.

[JILJITH JOHN]

Hi,

I am developing a tool for editing 3D models using openscenegraph. When I tried to load an .obj file, the texture is not applied. I am getting only black shade.

The model is imported using the below code. 

 osg::ref_ptr<osg::Node> model1= osgDB::readNodeFile(path.toStdString());
 model1->setDataVariance(osg::Object::DYNAMIC);

[Tom Pollok]

Which version of openscenegraph are you using?

Would you mind trying my obj model with mtl and jpg texture file.

https://owncloud.iosb.fraunhofer.de/owncloud/s/dc8dkbXrQz3gTuh

Pw: osg

I use the following to load it, but it crashes on my system with openscenegraph_3.4.1. Im curious if it works on your system.


osgDB::Options* opt = new osgDB::Options;
opt->setOptionString("noRotation");

osg::ref_ptr<osg::Node> node = osgDB::readNodeFile(pathToObjFile, opt);

[L. Voerman]

repost in google group; It seems like my reply to the mailing list does not show up in google groups.

Hi Jiljith,

The material has both an ambient and a diffuse texture (both refer to the same file)

while this can be made to work with a shader, using the fixed function pipeline means you'll have to choose one:

osgviewer -O DIFFUSE=0 12228_Dog_v1_L2.obj

Laurens.

[Robert Osfield]

On Tue, 14 Jan 2020 at 13:09, L. Voerman <l.vo...@rug.nl> wrote:

repost in google group; It seems like my reply to the mailing list does not show up in google groups.

I did think I had the two working together at the end of last year but current mailing lists are appearing, will look into it.

 

 

[Voerman, L.]

Hi Robert,

It did work, a mail from me to  osg-...@lists.openscenegraph.org on 11 november 2019 is on groups.google.com,

a post on 9 january is not.

Maybe this email will show up on google groups now that I've joined the group?

Laurens.

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[Voerman, L.]

To answer my own question, not that I've joint the google group my replies by e-mail to  osg-...@lists.openscenegraph.org show up in the google group as well

Laurens.

[Robert Osfield]

On Tuesday, 14 January 2020 14:18:21 UTC, Voerman, L. wrote:

To answer my own question, not that I've joint the google group my replies by e-mail to  osg-users@lists.openscenegraph.org show up in the google group as well

I wonder if googegroups is testing the from w.r.t accepting or rejecting posts and the posts from osg-users aren't signed in quite the right way to handle this.

Robert.

[JILJITH JOHN]

Hi Laurens,

The answer is so great. I am getting the texture applied. But it is in the osgviewer.exe only. 

Problematically I tried to add the option. Its not working.

osgDB::Options* opt = new osgDB::Options;

opt->setOptionString("DIFFUSE=0");

osg::ref_ptr<osg::Node> model1= osgDB::readNodeFile(path.toStdString(), opt);

[JILJITH JOHN]

Dear Tom,

Thank you for the reply. I tried to load your model. It is crashing in my PC also.

OSG version is 3.6.4

[Voerman, L.]

Hi Jiljith,

I see no problem in your code, and it works when I add it to my osgviewer.

with OSG_NOTIFY_LEVEL=NOTICE it generates 2 messages:

Obj Found map in options, [DIFFUSE]=0

Scaling image 'D:\laurens\Download\objDog/Dog_diffuse.jpg' from (450,450) to (512,512)

I suggest you can convert your file with "osgconv -O DIFFUSE=0 12228_Dog_v1_L2.obj 12228_Dog_v1_L2.obj.osgt"

so you can read it in your program with "osgDB::readRefNodeFile(path.toStdString() + ".osgt", opt);"

maybe your scene has no light, or other reasons why the dog shows up black.

Laurens.

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