Ik demo

[TokageItLab]

For review:

• Add LimitAngularVelocityModifier3D godotengine/godot#111184
• Fix Reset on Save corrupt poses if scene has multiple Skeletons godotengine/godot#110506
• Change AnimationLibrary serialization to avoid using Dictionary godotengine/godot#110502
• Fix read-only state for Skeleton and Inspector godotengine/godot#110487
• Add option to keying modified transform by SkeletonModifier3D godotengine/godot#110376
• Add check is_inside_tree() to SkeletonModifier3D as base class godotengine/godot#110371
• Add option to BoneConstraint3D to make reference target allow to set Node3D godotengine/godot#110336
• Add SkeletonModifier3D IKs as IKModifier3D godotengine/godot#110120
• Add slerp_with_rest() static func to Animation class godotengine/godot#107423

To resolve underlying conflicts, it would be helpful if the following three reviews could be prioritized and merged early:

• Add slerp_with_rest() static func to Animation class godotengine/godot#107423
• Add check is_inside_tree() to SkeletonModifier3D as base class godotengine/godot#110371
• Fix read-only state for Skeleton and Inspector godotengine/godot#110487

[TokageItLab]

This demo is the GeneralSkeleton for Retargeting in godotengine#100984 (comment) with added IK settings. You can see that skinning by constraints works correctly beneath IK.

If you want to preview BakedAnimation instead of IKAnimation, deactivate the Modifier used for IK.

[TokageItLab]

Update

Fixed origin issue (spines now rotate to limitation correctly):

Rename Knuckle Direction->Pole Direction:
ik_demo.zip

[fire]

@TokageItLab Rebase required on master to fix double gamma rendering bug

[TokageItLab]

@fire I will rebase after ManyBoneIK PR merged