[vtkusers] how to perform collision detection?

[Dai Shuo]

hi, everyone
    I'm working on a virtual surgery operation system. The collision 
detection will be frequently used in my program. Are thery any vtk classes 
can help me? Thank you for any helps or suggestions.
                                                 Daishuo

_________________________________________________________________
免费下载 MSN Explorer：http://explorer.msn.com/lccn/intl.asp。