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Question Two Bone IK weird twist at the root

Discussion in 'Animation' started by esgnn, Feb 6, 2024.

  1. esgnn

    esgnn

    Joined:
    Mar 3, 2020
    Posts:
    38
    I am using Animation Rigging 1.3.0 in Unity 2023.2.3f1.
    Two Bone IK root exhibits a twist when I change the position of the target. It is the only constraint on the model.
    Model is from Character Creator 3, wıth default bone setup.
    What could be the problem?
    upload_2024-2-6_23-28-34.png
    It seems to be related to the hint. When I move the hint from front to back of the knee, root (upper thigh bone) returns to its normal rotation.
    upload_2024-2-6_23-31-47.png
    Constraint settings:
    upload_2024-2-6_23-33-11.png
    Leg hierarchy:
    leghierarchy.jpg