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 = Vector2.zero; m_MySecondVector = Vector2.zero; 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(Vector2.zero, m_MyFirstVector, Color.magenta); Debug.DrawLine(Vector2.zero, m_MySecondVector, Color.blue);
//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); } }
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