You can create an IK chain with as many joints as you want.


Notes:

  • guides should not be placed in a straight line.
  • This node is most predictable with three joints.
  • Rotation and twist of the IK system are controlled by the tip ctrl.


Guides:

  • '{Number} Guide' - Position where the IK joints will be. Number of guides is determined by the attribute 'Joints'.


Attributes:

  1. 'Single Side Guide' - For some Aim Guides, the 'side_vector' (twist) is locked and driven by a single 'side_vector', which keeps the orientation consistent. Uncheck this attribute to unlock them if you need more control over the twist. Re-template is required when changes are made. [Video]
  2. 'Ctrls Scale' - Scale all the node ctrls. Note that the attachments 'Ctrls Settings' and 'CtrlsShape' will override this.
    [As of version 1.06.03]  'Update' button to change the ctrls size without requiring a rebuild. [Video] 
  3. 'Clean Transformations' - If checked, the zeroed pose will be the same as the bind pose; if unchecked, when zeroing the ctrls, they will align with a world axis specified in the following two attributes. [Video]
  4. 'World Orientation' - The world axis the ctrls will align with when zeroed. Usually, this attribute's default value is the correct value. [Video]
  5. 'World Orient Twist' - Along with 'World Orientation', defines the ctrls zeroed pose. Usually, the default value of 0 is the correct value. [Video]
  6. 'Expose RotateOrder' - Exposes all the ctrls 'RotateOrder' attribute in the Channel Box. [Video]
  7. 'Secondary Ctrls' - Secondary ctrls are added under some ctrls to help prevent gimbal lock.
    A visibility attribute is added to the parent ctrl. [Video] 
  8. 'Joints' - The number of joints/guides; modifying this attribute requires a 're-template'.


Connections:

  • 'Root Input' - Drives the 'root_ctrl'.
  • 'Tip Input' - Drives the 'tip_ctrl'.
  • 'Root Output' - An output at '0000_jnt'.
  • 'Tip Output' - An output at the tip joint.




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