Unity 计算两个向量的夹角

计算两个向量夹角

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

public class AngleTest : MonoBehaviour
{
    public GameObject move;
    public GameObject origin;

    private void OnDrawGizmos()
    {
        Vector3 originDirection = origin.transform.position - transform.position;
        Gizmos.DrawLine(transform.position, transform.position + originDirection);
        Vector3 nowDirection = move.transform.position - transform.position;
        Gizmos.DrawLine(transform.position, transform.position + nowDirection);
        float angle = Vector3.Angle(originDirection, nowDirection);
        float signedAngle = Vector3.SignedAngle(originDirection, nowDirection,Vector3.up);
        Debug.Log(angle.ToString()+" "+signedAngle.ToString());
    }
}