I'm not quite sure if i'm understanding your problem correctly. Do the objects reside in different 3ds-files or are they all in one? The the later case, the positions of the parts should be fine, because jPCT will import them as they are placed in the orginal model. In the former case, you would need to do the positioning "by hand" by finding the right position for every part.
yes,i just import a 3ds file ,all the objects is in the same 3ds file .^_^
so what should i need to do ,i guess that is to get each fixed point( body_centerpnt+x,body_centerpnt+y,body_centerpnt+z) of the body.and then command other object for instance:my arm ,set the fixed point as the same as (body_centerpnt+x,body_centerpnt+y,body_centerpnt+z)
,so if center point of the body change(ex:move),then the arm will move together.is it correct?
If this wasn't the question, then maybe you are referring to a possible to group seperate objects into a single entity. What you can't do (not yet) in jPCT is merging objects into a new one. What you can do, is building up a hierachie between them by using the addChild() and/or addParent()-methods from Object3D. With them, you may add all body-parts to the chest (or to whatever is appropiate in your case...maybe a dummy object...whatever...) and then the child-objects will inherit all transformations of the parent object.
Does this answer your question somehow?
i got it.so if i have the need to rotate and transform my arm fixed to my body at the same time,i need to asemble object by hand,and use addchild/add parent to make they have hierachie relation.then i use transform to the main body, other arm/leg/head....will transform as the same.is it correct?^^||.sorry it seem i am somewhat suck in 3d progaming/_\