CCDIK | Unreal Engine 5.7 Documentation | Epic Developer Community

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Description

The CCID solver can solve N-Bone chains using the Cyclic Coordinate Descent Inverse Kinematics algorithm. For now this node supports single effector chains only.

Information

Plugin	ControlRig
Category	Hierarchy
Tags	N-Bone,IK
Type	FRigUnit_CCDIKItemArray

IO

Name	Description	Permitted Types	Default Value
ExecutePin	This property is used to chain multiple mutable units together	Execute Context

Inputs

Name	Description	Permitted Types	Default Value
Items	The chain to use	TArray<FRigElementKey>	()
EffectorTransform	The transform of the effector in global space	Transform	(Rotation=(X=0.000000,Y=0.000000,Z=0.000000,W=1.000000),Translation=(X=0.000000,Y=0.000000,Z=0.000000),Scale3D=(X=1.000000,Y=1.000000,Z=1.000000))
Precision	The precision to use for the fabrik solver	float	1.000000
Weight	The weight of the solver - how much the IK should be applied.	float	1.000000
MaxIterations	The maximum number of iterations. Values between 4 and 16 are common.	int32	10
bStartFromTail	If set to true the direction of the solvers is flipped.	bool	True
BaseRotationLimit	The general rotation limit to be applied to bones	float	30.000000
RotationLimits	Defines the limits of rotation per bone.	TArray<FRigUnit_CCDIK_RotationLimitPerItem>	()
bPropagateToChildren	If set to true all of the global transforms of the children of this bone will be recalculated based on their local transforms. Note: This is computationally more expensive than turning it off.	bool	True