Version: 2021.3
public static float Angle (Vector2 from, Vector2 to);


from 测量角度差的源向量。
to 测量角度差的目标向量。


float The unsigned angle in degrees between the two vectors.


Gets the unsigned angle in degrees between from and to.

The angle returned is the unsigned angle between the two vectors.
Note: The angle returned will always be between 0 and 180 degrees, because the method returns the smallest angle between the vectors. That is, it will never return a reflex angle. Angles are calculated from world origin point (0,0,0) as the vertex.
See Also: SignedAngle function.

using UnityEngine;

public class Vector : 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 =; m_MySecondVector =; m_Angle = 0.0f; }

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

//Draw lines from origin point to Vectors Debug.DrawLine(, m_MyFirstVector, Color.magenta); Debug.DrawLine(, m_MySecondVector,;

//Log values of Vectors and angle in Console Debug.Log("MyFirstVector: " + m_MyFirstVector); Debug.Log("MySecondVector: " + m_MySecondVector); Debug.Log("Angle Between Objects: " + m_Angle); }

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