[vtkusers] Re: VTKOBBTree

[kannan]

friends,
 I  am planning to use vtkObb tree for checking intersections.
 i've the vtkpoints and vtkcells of 2 objects. How can i  build OBB tree using this?
 how can i check intersection using this OBB tree?
 i saw a function
      int  IntersectWithOBBTree (vtkOBBTree *OBBTreeB, vtkMatrix4x4 *XformBtoA, int(*function)(vtkOBBNode *nodeA, vtkOBBNode *nodeB, vtkMatrix4x4 *Xform, void *arg), void *data_arg) 

but i don't know how to use this function.
i think it is some related to call back function?
i hope someone may help me.
 thanks
 kannan

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