Hi,
Converting a FBX file (2010.2) into an OSG I saw that some "NULL" nodes are
lost. For example I've tried a convertion of a simple scene:
OBJECT
|----OBJ_WRAPPER
|----object_with_mesh
OBJECT and OBJ_WRAPPER are simple "NULL" nodes, typically used to group others
object.
I've exported in FBX a scene structured as the above example and then I have
converted this file into an OSG file (osgconv). The OSG file don't contains the
NULL nodes but only the object_with_mesh.
Analyzing the FBX file, I think that this happens when to a NULL node is
applied no one transformation. OBJECT and OBJ_WRAPPER aren't inserted in the
OSG file if they have FBX properties like:
Property: "Lcl Translation", "Lcl Translation", "A+",0,0,0
Property: "Lcl Rotation", "Lcl Rotation", "A+",0,0,0
Property: "Lcl Scaling", "Lcl Scaling", "A+",1,1,1
Property: "Visibility", "Visibility", "A+",1
Instead, if they have some non-zero Translation field or others properties,
then they are inserted in the OSG file as MatrixTransform node.
So, this behavior can be an optimization but the OSG file not always respect
the original hierarchy. Is there any way to keep the original hierarchy?
Thank you!
Cheers,
Dario
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=27365#27365
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