[osg-submissions] OBJ Loader Patches

[Robert Osfield]

Hi Doug,

I have just done a review of your changes to the obj plugin,
unfortunately they collide with a number of changes made by other
contributors so I can't attempt a merge as is.

What version of the OSG did you base your changes on?

Robert.

On Thu, Jul 3, 2008 at 5:07 PM, Doug McCorkle <mccdo at iastate.edu> wrote:
> Hello,
>
> Attached is patch that corrects/improves the following issues with the OBJ
> loader:
>
> 1. Added options to control wether the osgUtil::Tessellator or
> osgUtil::TriStripVisitor are run. By default they still run just as before.
> 2. Added support for the Emissive material. The data was being read from the
> mtl file but was never being applied to the model.
> 3. This is the main bug addressed, when a model is read in with an alpha
> value specified like:
>
> newmtl Material__8
>        Ns 24
>        d 0.33
>        illum 2
>        Kd 0.204 0.204 0.204
>        Ks 0 0 0
>        Ka 0.153 0.153 0.153
>
> where the alpha value is d. The loader would then overwrite the alpha value
> when reading the diffuse, specular, and ambient colors. I have changed all
> the material color readers to only set the values they read and to use the
> default colors specified in the constructor of the obj class. With these
> changes, the obj reader now handles opacity correctly if the alpha value is
> specified before the material color.
>
> Doug
>
>
>
>
>
>
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