Vector2.Angle

Parameters

Description

返回 from 与 to 之间的无符号角度（以度为单位）。

返回的角度为两个向量之间的无符号锐角。也就是说，使用两个向量之间的两个可能角度中的较小者。结果永远不会超过 180 度。

另请参阅：SignedAngle 函数。

using UnityEngine;

public class Vector2Angle : MonoBehaviour
{
    //Use these to get the GameObject's positions
    Vector2 m_MyFirstVector;
    Vector2 m_MySecondVector;

    float m_Angle;

    //You must assign to these two GameObjects in the Inspector
    public GameObject m_MyObject;
    public GameObject m_MyOtherObject;

    void Start()
    {
        //Initialise the Vector
        m_MyFirstVector = Vector2.zero;
        m_Angle = 0.0f;
    }

    void Update()
    {
        //Fetch the first GameObject's position
        m_MyFirstVector = m_MyObject.transform.position;
        //Fetch the second GameObject's position
        m_MySecondVector = m_MyOtherObject.transform.position;
        //Find the angle for the two Vectors
        m_Angle = Vector2.Angle(m_MyFirstVector, m_MySecondVector);
    }

    void OnGUI()
    {
        //Output the angle found above
        GUI.Label(new Rect(25, 25, 200, 40), "Angle Between Objects" + m_Angle);
    }
}