Robert, At the moment the OBJ loader builds a material to stateset map, which is indexed by the material name. However when the stateset is applied to a geometry, the material name is effectively lost.
Also the OBJ loader reads the group name (i.e. "g groupname" in the .obj) and any object name (i.e. "o objectname" in the .obj). For any "g" field in the OBJ file, it creates a new geode under the toplevel group, with a name as in the form "groupname:objectname" You should be able to see this visually by converting models into .osg and reading the results. However, the OBJ writer outputs everything as "o objectname", and doesn't preserve groups at all. Unfortunately, I think that what you want is not possible with the OBJ loader coded as it is. I think you (or someone) might need to dive in and: 1) Attach a loaded material name to a stateset on loading 2) Output things as "g geodename" rather than "o geodename". Probably ditch the writing (and reading?) of object completely. 3) The code for actually outputting material names seems to still be there. IMplementing (1) would not break any body elses code. Implementing (2), however, might. Does anybody actually use "o objectname" in their modelling pipeling? From the spec, Wavefront claims to ignore this anyway... Regards, David
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