Norman Vine writes:
>
>Curtis L. Olson writes:
>>
>>The problem only seems to happen when the 3d model is in the view. To
>>me, that would point to a problem with the model, or a problem with
>>plib's handling of the model. For instance if the 3d model tickles
>>some material or lighting feature that plib doesn't normally handle or
>>doesn't handle at all. But, I would be (maybe very) surprised to find
>>such a bug in plib that no one else has discovered previously.
>
>It might be informative to dump out or use gdb to look at the
>the actual
>OpenGL state values being used
>i.e the ambient, emissive, specular ect
>in the pre and post callbacks for the 3d model
>
>If one of these is being 'tromped on' then funny things are
>bound to happen !
Not really sure what all it means and / or how they get there but ...
There are some 'interesting values in the file this generates
void
FGAircraftModel::init ()
{
_aircraft = new FGModelPlacement;
string path = fgGetString("/sim/model/path", "Models/Geometry/glider.ac");
try {
_aircraft->init(path);
} catch (const sg_exception &ex) {
SG_LOG(SG_GENERAL, SG_ALERT, "Failed to load aircraft from " << path);
SG_LOG(SG_GENERAL, SG_ALERT, "(Falling back to glider.ac.)");
_aircraft->init("Models/Geometry/glider.ac");
}
_scene->addKid(_aircraft->getSceneGraph());
_selector->addKid(_aircraft->getSceneGraph());
globals->get_scenery()->get_aircraft_branch()->addKid(_selector);
#if 0
FILE *fp;
fp = fopen("model.ascii", "wt");
_aircraft->getSceneGraph()->print(fp);
fclose(fp);
#endif
}
e.g.
ssgVtxTable: Name=NoName
Userdata = 0x0
Num Parents=1
ssgSimpleState: Name=NoName
Userdata = 0x0
Translucent = True
ExternalProp = 0
Don't Care = CULLFACE
Enabled = TEXTURE2D COLOR_MATERIAL BLEND LIGHTING
TexHandle = 3
TexFilename =
'/home/nhv/FlightGear/Aircraft/c172/Models/c172-01.rgb'
Shade Model = 7425
Shininess = 2.000000
AlphaClamp = -0.326197
ColourMatMode= GL_AMBIENT_AND_DIFFUSE
Ambient : (-0.455241,-0.326197,0.526312,-0.455241)
Diffuse : (-0.326197,-0.468420,-0.832415,-0.326197)
Specular : (0.000000,0.000000,0.000000,1.000000)
Emission : (0.000000,0.000000,0.000000,1.000000)
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