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void BIF_retargetArc(struct bContext *C, ReebArc *earc, RigGraph *template_rigg);
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RigGraph *RIG_graphFromArmature(const struct bContext *C, struct Object *ob, struct bArmature *arm);
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int RIG_nbJoints(RigGraph *rg);
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void RIG_freeRigGraph(BGraph *rg);