Hi Alexey,

To override the alpha value for the model you could write a node visitor that collects all materials and changes all alpha components. I would probably change the files and remove the Tr field or change it to 1. A perhaps better solution would be to pass an option to the obj plugin that could force it to ignore the Tr field if a d field is already read.

I don't know why you get hangs in osgDB::readNodeFile, all my tests with osgviewer and osgconv went through without a problem.

Regards,
Per

On 06/29/2011 10:24 AM, Alexey Chernov wrote:
Hi, Per,
thank you very much for such a detailed description! I really didn't expected 
it is something wrong with the file itself.

So, can I override these opacity parameters in osgviewer somehow or I need to 
solve the file instead?
And, maybe you have some idea, why it can freeze the osgDB::readNodeFile() 
method? I also made some experiments and it seems that the freeze is somewhere 
in converting OBJ file model to OSG scene graph 
(ReaderWriterOBJ::convertModelToSceneGraph() method).

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