The Direction of the axis around which the body is constrained.
The Axis is defined in local space.
hingeJoint.axis = Vector3.up;
using UnityEngine;using System.Collections;public class example : MonoBehaviour { void Example() { hingeJoint.axis = Vector3.up; }}
import UnityEngineimport System.Collectionsclass example(MonoBehaviour): def Example(): hingeJoint.axis = Vector3.up