unity向量计算

    public Transform Target;
    float jiaodu = 30f;

    void LateUpdate()
    {
        if (Input.GetKeyDown(KeyCode.P))
        {
            jiaodu += 10f;
        }

        Quaternion rotation = Quaternion.Euler(0f, jiaodu, 0f) * Target.rotation;
        Vector3 newPos = rotation * new Vector3(10f, 0f, 0f);
        Debug.DrawLine(Target.rotation * new Vector3(10f, 0f, 0f), Vector3.zero, Color.red);
        Debug.DrawLine(newPos, Vector3.zero, Color.red);
        Debug.Log("newpos " + newPos + " nowpos " + Target.position + " distance " + Vector3.Distance(newPos, Target.position));
    }