Hybrid IK/FK Torso

• What:

  • Simple FK chain deforms Nurbs curve via skin deformer
  • Nurbs curve drives spline IK
  • IK twist controls derived from first and last bones
  • FK chain is parented to body C-G control

• For:

  • Action animations

• Pro:

  • FK flexibility with spline IK smoothness
  • Alternative to 2+1 FK

• Con:

  • FK limitations
  • Complicated setup