Euler

public static Quaternion Euler(float x, float y, float z);
public static Quaternion Euler(Vector3 euler);

功能: 返回Quaternion对应的欧拉角

例子：

public class ExampleClass : MonoBehaviour {public Quaternion rotation = Quaternion.Euler(0, 30, 0);
}public class ExampleClass : MonoBehaviour {public Quaternion rotation = Quaternion.Euler(new Vector3(0, 30, 0));
}

ToAngleAxis 返回物体的旋转角度信息

public void ToAngleAxis(out float angle, out Vector3 axis);

参数: angle 旋转的角度

axis 旋转轴,不一定是x,y,z轴

AngleAxis 创建围绕轴旋转某个角度的四元数

public static Quaternion AngleAxis(float angle, Vector3 axis);

参数: angle 旋转的角度

axis 旋转轴,不一定是x,y,z轴

例子:

如果我们想使a,b两物体的旋转一样，可以这么做

public class ToAngleAxis : MonoBehaviour {// Use this for initializationprivate float angle = 0.0F;private Vector3 axis = Vector3.zero;public GameObject a;public GameObject b;void Start () {a.transform.rotation.ToAngleAxis(out angle, out axis);b.transform.rotation = Quaternion.AngleAxis(angle, axis);}
}

SetLookRotation 设置Quaternion实例的朝向

public void SetLookRotation(Vector3 view, Vector3 up = Vector3.up)

参数: view 朝向的向量

up 向上的方向

例子:我们使一个物体朝向另一个物体

代码：

public class SetLookRotation: MonoBehaviour {public Transform target;void Start() {Vector3 relativePos = target.position - transform.position;Quaternion rotation = Quaternion.identity;rotation.SetLookRotation(relativePos,transform.up);transform.rotation = rotation;}
}

LookRotation 设置Quaternion实例的朝向

public static Quaternion LookRotation(Vector3 forward, Vector3 upwards = Vector3.up);

参数: forward 朝向的向量

up 向上的方向

public class LookRotation : MonoBehaviour {public Transform target;void Start() {Vector3 relativePos = target.position - transform.position;Quaternion rotation = Quaternion.LookRotation(relativePos);transform.rotation = rotation;}
}

效果

SetFromToRotation

public void SetFromToRotation(Vector3 fromDirection, Vector3 toDirection);

功能: 用于创建从fromDirection到toDirection的rotation。设有以下代码:

Quaternion q1 = Quaternion.identity;

q1.SetFromToRotation(v1,v2);

transform.rotation = q1;

则相当于将GameObject对象进行如下变换: 首先将GameObject对象自身坐标系的x,y,z轴方向

和世界坐标系的x,y,z轴方向一致, 然后将GameObject对象自身坐标系中向量v1指向的方向旋转到v2方向。

FromToRotation

和 SetFromToRotation功能一样，只是用法不一样

Lerp 线性插值

public static Quaternion Lerp(Quaternion a, Quaternion b, float t);

功能:返回从a到b的线性插值，该方法速度比Slerp快

例子:

我们创建两个Cube，使其中一个Cube的朝向(z轴方向)指向另一个Cube

代码:

public class t_Quaternion_Slerp : MonoBehaviour {public Transform to;public float speed = 0.1F;Vector3 targetVector;Quaternion targetQuaternion = Quaternion.identity;void Start() {targetVector = to.position - transform.position;targetQuaternion = Quaternion.LookRotation(targetVector);}void Update(){transform.rotation = Quaternion.Lerp(transform.rotation, targetQuaternion,Time.deltaTime);}
}

效果: