Unity 常用脚本：Quaternion

Quaternion四元数

 public static Quaternion identity { get; }

摘要:The identity rotation (Read Only). 标识旋转(只读)。/空旋转

Debug.Log(Quaternion.identity);
transform.rotation = Quaternion.identity;

 ---> 

public Vector3 eulerAngles { get; set; }

摘要:Returns or sets the euler angle representation of the rotation. 返回或设置旋转的欧拉角表示。

public static float Angle(Quaternion a, Quaternion b);

摘要:Returns the angle in degrees between two rotations a and b.返回两个旋转a和b之间的角度(以角度为单位)。

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

摘要:Creates a rotation which rotates angle degrees around axis.沿着某个轴旋转到指定角度

transform.rotation = Quaternion.AngleAxis(50,Vector3.up);

public static float Dot(Quaternion a, Quaternion b);

摘要:The dot product between two rotations. 两个旋转之间的点积。

public static Quaternion Euler(Vector3 euler);

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

摘要:Returns a rotation that rotates z degrees around the z axis, x degrees around the x axis, and y degrees around the y axis. 返回绕z轴旋转z度的旋转，绕x轴旋转x度，绕y轴旋转y度的旋转。/转为欧拉角

public static Quaternion FromToRotation(Vector3 fromDirection, Vector3 toDirection);

摘要:Creates a rotation which rotates from fromDirection to toDirection. 创建一个从一个方向旋转到另一个方向的旋转。

Debug.Log(Quaternion.FromToRotation(Vector3.right,Vector3.up));

 

public static Quaternion Inverse(Quaternion rotation);

摘要:Returns the Inverse of rotation.返回旋转的倒数。

Debug.Log(new Quaternion(0, 0, 0.7f, 0.7f).eulerAngles);
Debug.Log(Quaternion.Inverse(new Quaternion(0,0,0.7f,0.7f)).eulerAngles);

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

摘要:Interpolates between a and b by t and normalizes the result afterwards. The parameter t is clamped to the range [0, 1]. 

用t在a和b之间插入，然后对结果进行标准化。参数t被夹在[0,1]范围内。

transform.rotation = Quaternion.Lerp(transform.rotation, Quaternion.Euler(0, transform.eulerAngles.y + 90, 0), 0.1f);

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

摘要:Interpolates between a and b by t and normalizes the result afterwards. The parameter t is not clamped. 

用t在a和b之间插入，然后对结果进行标准化。参数t没有被限制。

public static Quaternion LookRotation(Vector3 forward); 

public static Quaternion LookRotation(Vector3 forward, [DefaultValue("Vector3.up")] Vector3 upwards);

摘要:Creates a rotation with the specified forward and upwards directions. 创建具有指定正向和向上方向的旋转。/朝向某向量

transform.rotation = Quaternion.LookRotation(Vector3.right);

public static Quaternion RotateTowards(Quaternion from, Quaternion to, float maxDegreesDelta);

摘要:Rotates a rotation from towards to. 以maxDegreesDelta的角速度从from旋转到to

transform.rotation = Quaternion.RotateTowards(transform.rotation, new Quaternion(0, 0, 0.7f, 0.7f), 0.1f);

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

摘要:Spherically interpolates between a and b by t. The parameter t is clamped to the range [0, 1]. 通过t在a和b之间进行球面插值。参数t被夹在[0,1]范围内。/球形插值/弧形插值

transform.rotation = Quaternion.Slerp(transform.rotation, new Quaternion(0, 0, 0.7f, 0.7f), 0.1f);

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

摘要:Spherically interpolates between a and b by t. The parameter t is not clamped. 

用t在a和b之间进行球面插值。参数t没有被限制。

public void Set(float newX, float newY, float newZ, float newW);

摘要:Set x, y, z and w components of an existing Quaternion. 设置/赋值

Quaternion quaternion = transform.rotation;
quaternion.Set(0, 0, 0.7f, 0.7f);
transform.rotation = quaternion;

public void SetFromToRotation(Vector3 fromDirection, Vector3 toDirection);

摘要:Creates a rotation which rotates from fromDirection to toDirection. 创建一个从一个方向旋转到另一个方向的旋转。

public void SetLookRotation(Vector3 view);

public void SetLookRotation(Vector3 view, [DefaultValue("Vector3.up")] Vector3 up);

摘要:Creates a rotation with the specified forward and upwards directions. 创建具有指定正向和向上方向的旋转。

public override string ToString();

public string ToString(string format);

摘要:Returns a nicely formatted string of the Quaternion. 返回一个格式良好的四元数字符串。

public static Quaternion operator *(Quaternion lhs, Quaternion rhs);
public static Vector3 operator *(Quaternion rotation, Vector3 point);
public static bool operator ==(Quaternion lhs, Quaternion rhs);
public static bool operator !=(Quaternion lhs, Quaternion rhs);