HDK
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#include <skelRootAdapter.h>
The SkelRoot adapter exists for two reasons: (a) Registering the SkeletonAdapter to handle processing of any skinned prim under a SkelRoot prim. The UsdSkel schema requires that ANY skinned prim lives under a SkelRoot. (b) Getting the skeleton that deforms each skinned prim, which is stored in the SkeletonAdapter (the latter is stateful). Both of these happen during Populate(..)