About Object-Space, I am a bit confused

[platte]

I have used jPCT-AE for a few weeks. I am  a bit confused about object-space.I know, at OpenGL, When we rotate or translate a object, local coordinate of the object will move together. But  jPCT-AE seems  not to move object-coordinate?

[EgonOlsen]

I'm not sure if i got the question right...object space is well defined in jPCT as well in OpenGL. It's the space in which the object is defined. It doesn't change. Any transformation of the object's coordinates usually doesn't happen in object space but is a transformation from object into world space.