FK/IK Switching: Simple Alternatives to FK/IK

• “Dingoâ€? setup: simple but cluttered

  • Simulating 3 bones? Use 3 bones
    • FK
    • IK
    • Result
  • Drive result limb with constraint switch
  • Easy to debug, but inelegant

• Pseudo FK: add swing action to IK

  • Body space IK with an extra pivot at hip / shoulder
    • Puts IK target into a “curved spaceâ€?
    • Swing limbs by rotating the parent node
  • Uses:
    • Movement anims with which need body space IK and “swingâ€? action
  • Use constraint-switch handoff for world-body transitions
  • Watch out for control overlaps!