Attention: Here be dragons

This is the latest (unstable) version of this documentation, which may document features not available in or compatible with released stable versions of Godot.

FABRIK3D

Inherits: IterateIK3D < ChainIK3D < IKModifier3D < SkeletonModifier3D < Node3D < Node < Object

Position based forward and backward reaching inverse kinematics solver.

Description

FABRIK3D is position based IK, allowing precise and accurate tracking of targets. It's ideal for simple chains without limitations.

The resulting twist around the forward vector will always be kept from the previous pose.

Note: When the target is close to the root, it tends to produce zig-zag patterns, resulting in unnatural visual movement.