Quaternion.AngleAxis

• https://docs.unity3d.com/ScriptReference/Quaternion.AngleAxis.html

1. Declaration

public static Quaternion AngleAxis(float angle, Vector3 axis);

2. Parameters

float angle

회전량. degree

Vector3 axis

회전 시킬 대상의 로컬로 변환된 벡터

3. Returns

Quaternion 회전량. local 기준

초기 localRotation을 갖고 있으면 좋음

4. Example

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class AngleAxisTest : MonoBehaviour
{
    // Start is called before the first frame update
    public float angle;
    public Transform parent;
    public Transform child;
    public Quaternion childInitRotation;
    public Vector3 axisVector;
    public Vector3 axisVectorLocal;
    void Awake()
    {
        childInitRotation = child.localRotation;
    }
    void Start()
    {
        axisVectorLocal = child.InverseTransformDirection(axisVector.normalized);
    }

    // Update is called once per frame
    void Update()
    {
        Debug.DrawRay(child.position, axisVector, Color.red, 0.1f, true);
        Quaternion rotation = Quaternion.AngleAxis(angle, axisVectorLocal);
        child.localRotation = childInitRotation * rotation;
    }
}

localRotation이 아닌 rotation은 어떻게 해야할지 감이 안 잡힘....