java.lang.Object
- net.lax1dude.eaglercraft.v1_8.vector.Vector
- - net.lax1dude.eaglercraft.v1_8.vector.Quaternion

All Implemented Interfaces:

java.io.Serializable, ReadableVector, ReadableVector2f, ReadableVector3f, ReadableVector4f
```
public class Quaternion
extends Vector
implements ReadableVector4f
```
See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

float w

float x

float y

float z

Constructor Summary

Constructors
Constructor	Description
`Quaternion()`	C'tor.
`Quaternion(float x, float y, float z, float w)`	C'tor
`Quaternion(ReadableVector4f src)`	C'tor

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static float`	`dot(Quaternion left, Quaternion right)`	The dot product of two quaternions
`float`	`getW()`
`float`	`getX()`
`float`	`getY()`
`float`	`getZ()`
`float`	`lengthSquared()`
`Vector`	`load(FloatBuffer buf)`	Load this vector from a FloatBuffer
`static Quaternion`	`mul(Quaternion left, Quaternion right, Quaternion dest)`	Sets the value of this quaternion to the quaternion product of quaternions left and right (this = left * right).
`static Quaternion`	`mulInverse(Quaternion left, Quaternion right, Quaternion dest)`	Multiplies quaternion left by the inverse of quaternion right and places the value into this quaternion.
`Vector`	`negate()`	Calculate the conjugate of this quaternion
`Quaternion`	`negate(Quaternion dest)`	Calculate the conjugate of this quaternion and put it into the given one
`static Quaternion`	`negate(Quaternion src, Quaternion dest)`	Calculate the conjugate of this quaternion and put it into the given one
`Quaternion`	`normalise(Quaternion dest)`	Normalise this quaternion and place the result in another quaternion.
`static Quaternion`	`normalise(Quaternion src, Quaternion dest)`	Normalise the source quaternion and place the result in another quaternion.
`Vector`	`scale(float scale)`	Scale this vector
`static Quaternion`	`scale(float scale, Quaternion src, Quaternion dest)`	Scale the source quaternion by scale and put the result in the destination
`void`	`set(float x, float y)`
`void`	`set(float x, float y, float z)`
`void`	`set(float x, float y, float z, float w)`
`Quaternion`	`set(ReadableVector4f src)`	Load from another Vector4f
`void`	`setFromAxisAngle(Vector4f a1)`	Sets the value of this quaternion to the equivalent rotation of the Axis-Angle argument.
`Quaternion`	`setFromMatrix(Matrix3f m)`	Sets the value of this quaternion using the rotational component of the passed matrix.
`static Quaternion`	`setFromMatrix(Matrix3f m, Quaternion q)`	Sets the value of the source quaternion using the rotational component of the passed matrix.
`Quaternion`	`setFromMatrix(Matrix4f m)`	Sets the value of this quaternion using the rotational component of the passed matrix.
`static Quaternion`	`setFromMatrix(Matrix4f m, Quaternion q)`	Sets the value of the source quaternion using the rotational component of the passed matrix.
`Quaternion`	`setIdentity()`	Set this quaternion to the multiplication identity.
`static Quaternion`	`setIdentity(Quaternion q)`	Set the given quaternion to the multiplication identity.
`void`	`setW(float w)`	Set W
`void`	`setX(float x)`	Set X
`void`	`setY(float y)`	Set Y
`void`	`setZ(float z)`	Set Z
`Vector`	`store(FloatBuffer buf)`	Store this vector in a FloatBuffer
`java.lang.String`	`toString()`

Methods inherited from class net.lax1dude.eaglercraft.v1_8.vector.Vector
length, normalise

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface net.lax1dude.eaglercraft.v1_8.vector.ReadableVector
length

- Field Detail
  - x
```
public float x
```
  - y
```
public float y
```
  - z
```
public float z
```
  - w
```
public float w
```
- Constructor Detail
  - Quaternion
```
public Quaternion()
```
    C'tor. The quaternion will be initialized to the identity.
  - Quaternion
```
public Quaternion(ReadableVector4f src)
```
    C'tor
    
    Parameters:
    
    src -
  - Quaternion
```
public Quaternion(float x,
                  float y,
                  float z,
                  float w)
```
    C'tor
- Method Detail
  - set
```
public void set(float x,
                float y)
```
  - set
```
public void set(float x,
                float y,
                float z)
```
  - set
```
public void set(float x,
                float y,
                float z,
                float w)
```
  - set
```
public Quaternion set(ReadableVector4f src)
```
    Load from another Vector4f
    
    Parameters:
    
    src - The source vector
    
    Returns:
    
    this
  - setIdentity
```
public Quaternion setIdentity()
```
    Set this quaternion to the multiplication identity.
    
    Returns:
    
    this
  - setIdentity
```
public static Quaternion setIdentity(Quaternion q)
```
    Set the given quaternion to the multiplication identity.
    
    Parameters:
    
    q - The quaternion
    
    Returns:
    
    q
  - lengthSquared
```
public float lengthSquared()
```
    Specified by:
    
    lengthSquared in interface ReadableVector
    
    Specified by:
    
    lengthSquared in class Vector
    
    Returns:
    
    the length squared of the quaternion
  - normalise
```
public static Quaternion normalise(Quaternion src,
                                   Quaternion dest)
```
    Normalise the source quaternion and place the result in another quaternion.
    
    Parameters:
    
    src - The source quaternion
    
    dest - The destination quaternion, or null if a new quaternion is to be created
    
    Returns:
    
    The normalised quaternion
  - normalise
```
public Quaternion normalise(Quaternion dest)
```
    Normalise this quaternion and place the result in another quaternion.
    
    Parameters:
    
    dest - The destination quaternion, or null if a new quaternion is to be created
    
    Returns:
    
    the normalised quaternion
  - dot
```
public static float dot(Quaternion left,
                        Quaternion right)
```
    The dot product of two quaternions
    
    Parameters:
    
    left - The LHS quat
    
    right - The RHS quat
    
    Returns:
    
    left dot right
  - negate
```
public Quaternion negate(Quaternion dest)
```
    Calculate the conjugate of this quaternion and put it into the given one
    
    Parameters:
    
    dest - The quaternion which should be set to the conjugate of this quaternion
  - negate
```
public static Quaternion negate(Quaternion src,
                                Quaternion dest)
```
    Calculate the conjugate of this quaternion and put it into the given one
    
    Parameters:
    
    src - The source quaternion
    
    dest - The quaternion which should be set to the conjugate of this quaternion
  - negate
```
public Vector negate()
```
    Calculate the conjugate of this quaternion
    
    Specified by:
    
    negate in class Vector
    
    Returns:
    
    this
  - load
```
public Vector load(FloatBuffer buf)
```
    Description copied from class: Vector
    
    Load this vector from a FloatBuffer
    
    Specified by:
    
    load in class Vector
    
    Parameters:
    
    buf - The buffer to load it from, at the current position
    
    Returns:
    
    this
  - scale
```
public Vector scale(float scale)
```
    Description copied from class: Vector
    
    Scale this vector
    
    Specified by:
    
    scale in class Vector
    
    Parameters:
    
    scale - The scale factor
    
    Returns:
    
    this
  - scale
```
public static Quaternion scale(float scale,
                               Quaternion src,
                               Quaternion dest)
```
    Scale the source quaternion by scale and put the result in the destination
    
    Parameters:
    
    scale - The amount to scale by
    
    src - The source quaternion
    
    dest - The destination quaternion, or null if a new quaternion is to be created
    
    Returns:
    
    The scaled quaternion
  - store
```
public Vector store(FloatBuffer buf)
```
    Description copied from class: Vector
    
    Store this vector in a FloatBuffer
    
    Specified by:
    
    store in interface ReadableVector
    
    Specified by:
    
    store in class Vector
    
    Parameters:
    
    buf - The buffer to store it in, at the current position
    
    Returns:
    
    this
  - getX
```
public final float getX()
```
    Specified by:
    
    getX in interface ReadableVector2f
    
    Returns:
    
    x
  - getY
```
public final float getY()
```
    Specified by:
    
    getY in interface ReadableVector2f
    
    Returns:
    
    y
  - setX
```
public final void setX(float x)
```
    Set X
    
    Parameters:
    
    x -
  - setY
```
public final void setY(float y)
```
    Set Y
    
    Parameters:
    
    y -
  - setZ
```
public void setZ(float z)
```
    Set Z
    
    Parameters:
    
    z -
  - getZ
```
public float getZ()
```
    Specified by:
    
    getZ in interface ReadableVector3f
    
    Returns:
    
    z
  - setW
```
public void setW(float w)
```
    Set W
    
    Parameters:
    
    w -
  - getW
```
public float getW()
```
    Specified by:
    
    getW in interface ReadableVector4f
    
    Returns:
    
    w
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - mul
```
public static Quaternion mul(Quaternion left,
                             Quaternion right,
                             Quaternion dest)
```
    Sets the value of this quaternion to the quaternion product of quaternions left and right (this = left * right). Note that this is safe for aliasing (e.g. this can be left or right).
    
    Parameters:
    
    left - the first quaternion
    
    right - the second quaternion
  - mulInverse
```
public static Quaternion mulInverse(Quaternion left,
                                    Quaternion right,
                                    Quaternion dest)
```
    Multiplies quaternion left by the inverse of quaternion right and places the value into this quaternion. The value of both argument quaternions is preservered (this = left * right^-1).
    
    Parameters:
    
    left - the left quaternion
    
    right - the right quaternion
  - setFromAxisAngle
```
public final void setFromAxisAngle(Vector4f a1)
```
    Sets the value of this quaternion to the equivalent rotation of the Axis-Angle argument.
    
    Parameters:
    
    a1 - the axis-angle: (x,y,z) is the axis and w is the angle
  - setFromMatrix
```
public final Quaternion setFromMatrix(Matrix4f m)
```
    Sets the value of this quaternion using the rotational component of the passed matrix.
    
    Parameters:
    
    m - The matrix
    
    Returns:
    
    this
  - setFromMatrix
```
public static Quaternion setFromMatrix(Matrix4f m,
                                       Quaternion q)
```
    Sets the value of the source quaternion using the rotational component of the passed matrix.
    
    Parameters:
    
    m - The source matrix
    
    q - The destination quaternion, or null if a new quaternion is to be created
    
    Returns:
    
    q
  - setFromMatrix
```
public final Quaternion setFromMatrix(Matrix3f m)
```
    Sets the value of this quaternion using the rotational component of the passed matrix.
    
    Parameters:
    
    m - The source matrix
  - setFromMatrix
```
public static Quaternion setFromMatrix(Matrix3f m,
                                       Quaternion q)
```
    Sets the value of the source quaternion using the rotational component of the passed matrix.
    
    Parameters:
    
    m - The source matrix
    
    q - The destination quaternion, or null if a new quaternion is to be created
    
    Returns:
    
    q

Class Quaternion

Field Summary

Constructor Summary

Method Summary

Methods inherited from class net.lax1dude.eaglercraft.v1_8.vector.Vector

Methods inherited from class java.lang.Object

Methods inherited from interface net.lax1dude.eaglercraft.v1_8.vector.ReadableVector

Field Detail

x

y

z

w

Constructor Detail

Quaternion

Quaternion

Quaternion

Method Detail

set

set

set

set

setIdentity

setIdentity

lengthSquared

normalise

normalise

dot

negate

negate

negate

load

scale

scale

store

getX

getY

setX

setY

setZ

getZ

setW

getW

toString

mul

mulInverse

setFromAxisAngle

setFromMatrix

setFromMatrix

setFromMatrix

setFromMatrix