Control Rig & IK

Procedural animation and inverse kinematics in Unreal Engine 4.27 (Vite) — legacy Control Rig (a pre-release, RigVM-executed graph that manipulates an FRigHierarchyContainer of bones/controls/spaces/curves; the 5.x unified URigHierarchy and Modular Rig rewrite have not happened yet) and the built-in AnimGraph IK nodes (Two Bone IK, FABRIK, CCDIK, Spline IK, Leg IK). Use when implementing foot placement on terrain via line traces, hand/weapon IK, look-at, procedural pose fixups, or classic skeleton-proportional retargeting. Covers UControlRig, FRigHierarchyContainer, FRigUnit, FRigUnitContext, FControlRigExecuteContext, FAnimNode_ControlRig, UControlRigComponent, FAnimNode…