Package net.lax1dude.eaglercraft.v1_8.vector

Class Matrix4f

java.lang.Object

net.lax1dude.eaglercraft.v1_8.vector.Matrix

net.lax1dude.eaglercraft.v1_8.vector.Matrix4f

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

Matrix4f

public class Matrix4f
extends Matrix
implements java.io.Serializable

Holds a 4x4 float matrix.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
float	m00
float	m01
float	m02
float	m03
float	m10
float	m11
float	m12
float	m13
float	m20
float	m21
float	m22
float	m23
float	m30
float	m31
float	m32
float	m33

Constructor Summary

Constructors

Constructor	Description
Matrix4f()	Construct a new matrix, initialized to the identity.
Matrix4f(Matrix4f src)

Method Summary

Modifier and Type	Method	Description
static Matrix4f	add(Matrix4f left, Matrix4f right, Matrix4f dest)	Add two matrices together and place the result in a third matrix.
float	determinant()
static boolean	equal(Matrix4f a, Matrix4f b)
boolean	equals(java.lang.Object m)
Matrix	invert()	Invert this matrix
static Matrix4f	invert(Matrix4f src, Matrix4f dest)	Invert the source matrix and put the result in the destination
Matrix	load(float[] buf)	Load from a float buffer.
Matrix	load(FloatBuffer buf)	Load from a float buffer.
Matrix4f	load(Matrix4f src)	Load from another matrix4f
static Matrix4f	load(Matrix4f src, Matrix4f dest)	Copy the source matrix to the destination matrix
Matrix	loadTranspose(FloatBuffer buf)	Load from a float buffer.
static Matrix4f	mul(Matrix4f left, Matrix4f right, Matrix4f dest)	Multiply the right matrix by the left and place the result in a third matrix.
Matrix	negate()	Negate this matrix
Matrix4f	negate(Matrix4f dest)	Negate this matrix and place the result in a destination matrix.
static Matrix4f	negate(Matrix4f src, Matrix4f dest)	Negate this matrix and place the result in a destination matrix.
Matrix4f	rotate(float angle, Vector3f axis)	Rotates the matrix around the given axis the specified angle
Matrix4f	rotate(float angle, Vector3f axis, Matrix4f dest)	Rotates the matrix around the given axis the specified angle
static Matrix4f	rotate(float angle, Vector3f axis, Matrix4f src, Matrix4f dest)	Rotates the source matrix around the given axis the specified angle and put the result in the destination matrix.
Matrix4f	scale(Vector3f vec)	Scales this matrix
static Matrix4f	scale(Vector3f vec, Matrix4f src, Matrix4f dest)	Scales the source matrix and put the result in the destination matrix
Matrix	setIdentity()	Set this matrix to be the identity matrix.
static Matrix4f	setIdentity(Matrix4f m)	Set the given matrix to be the identity matrix.
Matrix	setZero()	Set this matrix to 0.
static Matrix4f	setZero(Matrix4f m)	Set the given matrix to 0.
Matrix	store(float[] buf)
Matrix	store(FloatBuffer buf)	Store this matrix in a float buffer.
Matrix	store3f(FloatBuffer buf)	Store the rotation portion of this matrix in a float buffer.
Matrix	storeTranspose(FloatBuffer buf)	Store this matrix in a float buffer.
static Matrix4f	sub(Matrix4f left, Matrix4f right, Matrix4f dest)	Subtract the right matrix from the left and place the result in a third matrix.
java.lang.String	toString()	Returns a string representation of this matrix
static Vector4f	transform(Matrix4f left, Vector4f right, Vector4f dest)	Transform a Vector by a matrix and return the result in a destination vector.
Matrix4f	translate(Vector2f vec)	Translate this matrix
Matrix4f	translate(Vector2f vec, Matrix4f dest)	Translate this matrix and stash the result in another matrix
static Matrix4f	translate(Vector2f vec, Matrix4f src, Matrix4f dest)	Translate the source matrix and stash the result in the destination matrix
Matrix4f	translate(Vector3f vec)	Translate this matrix
Matrix4f	translate(Vector3f vec, Matrix4f dest)	Translate this matrix and stash the result in another matrix
static Matrix4f	translate(Vector3f vec, Matrix4f src, Matrix4f dest)	Translate the source matrix and stash the result in the destination matrix
Matrix	transpose()	Transpose this matrix
Matrix4f	transpose(Matrix4f dest)	Transpose this matrix and place the result in another matrix
static Matrix4f	transpose(Matrix4f src, Matrix4f dest)	Transpose the source matrix and place the result in the destination matrix

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

m00

public float m00

m01

public float m01

m02

public float m02

m03

public float m03

m10

public float m10

m11

public float m11

m12

public float m12

m13

public float m13

m20

public float m20

m21

public float m21

m22

public float m22

m23

public float m23

m30

public float m30

m31

public float m31

m32

public float m32

m33

public float m33

Constructor Detail

Matrix4f

public Matrix4f()

Construct a new matrix, initialized to the identity.

Matrix4f

public Matrix4f(Matrix4f src)

Method Detail

toString

public java.lang.String toString()

Returns a string representation of this matrix

Overrides:

toString in class java.lang.Object

setIdentity

public Matrix setIdentity()

Set this matrix to be the identity matrix.

Specified by:

setIdentity in class Matrix

Returns:

this

setIdentity

public static Matrix4f setIdentity(Matrix4f m)

Set the given matrix to be the identity matrix.

Parameters:

m - The matrix to set to the identity

Returns:

m

setZero

public Matrix setZero()

Set this matrix to 0.

Specified by:

setZero in class Matrix

Returns:

this

setZero

public static Matrix4f setZero(Matrix4f m)

Set the given matrix to 0.

Parameters:

m - The matrix to set to 0

Returns:

m

load

public Matrix4f load(Matrix4f src)

Load from another matrix4f

Parameters:

src - The source matrix

Returns:

this

load

public static Matrix4f load(Matrix4f src,
                            Matrix4f dest)

Copy the source matrix to the destination matrix

Parameters:

src - The source matrix

dest - The destination matrix, or null of a new one is to be created

Returns:

The copied matrix

load

public Matrix load(FloatBuffer buf)

Load from a float buffer. The buffer stores the matrix in column major (OpenGL) order.

Specified by:

load in class Matrix

Parameters:

buf - A float buffer to read from

Returns:

this

load

public Matrix load(float[] buf)

Load from a float buffer. The buffer stores the matrix in column major (OpenGL) order.

Parameters:

buf - A float array to read from

Returns:

this

loadTranspose

public Matrix loadTranspose(FloatBuffer buf)

Load from a float buffer. The buffer stores the matrix in row major (maths) order.

Specified by:

loadTranspose in class Matrix

Parameters:

buf - A float buffer to read from

Returns:

this

store

public Matrix store(FloatBuffer buf)

Store this matrix in a float buffer. The matrix is stored in column major (openGL) order.

Specified by:

store in class Matrix

Parameters:

buf - The buffer to store this matrix in

Returns:

this

store

public Matrix store(float[] buf)

storeTranspose

public Matrix storeTranspose(FloatBuffer buf)

Store this matrix in a float buffer. The matrix is stored in row major (maths) order.

Specified by:

storeTranspose in class Matrix

Parameters:

buf - The buffer to store this matrix in

Returns:

this

store3f

public Matrix store3f(FloatBuffer buf)

Store the rotation portion of this matrix in a float buffer. The matrix is stored in column major (openGL) order.

Parameters:

buf - The buffer to store this matrix in

add

public static Matrix4f add(Matrix4f left,
                           Matrix4f right,
                           Matrix4f dest)

Add two matrices together and place the result in a third matrix.

Parameters:

left - The left source matrix

right - The right source matrix

dest - The destination matrix, or null if a new one is to be created

Returns:

the destination matrix

sub

public static Matrix4f sub(Matrix4f left,
                           Matrix4f right,
                           Matrix4f dest)

Subtract the right matrix from the left and place the result in a third matrix.

Parameters:

left - The left source matrix

right - The right source matrix

dest - The destination matrix, or null if a new one is to be created

Returns:

the destination matrix

mul

public static Matrix4f mul(Matrix4f left,
                           Matrix4f right,
                           Matrix4f dest)

Multiply the right matrix by the left and place the result in a third matrix.

Parameters:

left - The left source matrix

right - The right source matrix

dest - The destination matrix, or null if a new one is to be created

Returns:

the destination matrix

transform

public static Vector4f transform(Matrix4f left,
                                 Vector4f right,
                                 Vector4f dest)

Transform a Vector by a matrix and return the result in a destination vector.

Parameters:

left - The left matrix

right - The right vector

dest - The destination vector, or null if a new one is to be created

Returns:

the destination vector

transpose

public Matrix transpose()

Transpose this matrix

Specified by:

transpose in class Matrix

Returns:

this

translate

public Matrix4f translate(Vector2f vec)

Translate this matrix

Parameters:

vec - The vector to translate by

Returns:

this

translate

public Matrix4f translate(Vector3f vec)

Translate this matrix

Parameters:

vec - The vector to translate by

Returns:

this

scale

public Matrix4f scale(Vector3f vec)

Scales this matrix

Parameters:

vec - The vector to scale by

Returns:

this

scale

public static Matrix4f scale(Vector3f vec,
                             Matrix4f src,
                             Matrix4f dest)

Scales the source matrix and put the result in the destination matrix

Parameters:

vec - The vector to scale by

src - The source matrix

dest - The destination matrix, or null if a new matrix is to be created

Returns:

The scaled matrix

rotate

public Matrix4f rotate(float angle,
                       Vector3f axis)

Rotates the matrix around the given axis the specified angle

Parameters:

angle - the angle, in radians.

axis - The vector representing the rotation axis. Must be normalized.

Returns:

this

rotate

public Matrix4f rotate(float angle,
                       Vector3f axis,
                       Matrix4f dest)

Rotates the matrix around the given axis the specified angle

Parameters:

angle - the angle, in radians.

axis - The vector representing the rotation axis. Must be normalized.

dest - The matrix to put the result, or null if a new matrix is to be created

Returns:

The rotated matrix

rotate

public static Matrix4f rotate(float angle,
                              Vector3f axis,
                              Matrix4f src,
                              Matrix4f dest)

Rotates the source matrix around the given axis the specified angle and put the result in the destination matrix.

Parameters:

angle - the angle, in radians.

axis - The vector representing the rotation axis. Must be normalized.

src - The matrix to rotate

dest - The matrix to put the result, or null if a new matrix is to be created

Returns:

The rotated matrix

translate

public Matrix4f translate(Vector3f vec,
                          Matrix4f dest)

Translate this matrix and stash the result in another matrix

Parameters:

vec - The vector to translate by

dest - The destination matrix or null if a new matrix is to be created

Returns:

the translated matrix

translate

public static Matrix4f translate(Vector3f vec,
                                 Matrix4f src,
                                 Matrix4f dest)

Translate the source matrix and stash the result in the destination matrix

Parameters:

vec - The vector to translate by

src - The source matrix

dest - The destination matrix or null if a new matrix is to be created

Returns:

The translated matrix

translate

public Matrix4f translate(Vector2f vec,
                          Matrix4f dest)

Translate this matrix and stash the result in another matrix

Parameters:

vec - The vector to translate by

dest - The destination matrix or null if a new matrix is to be created

Returns:

the translated matrix

translate

public static Matrix4f translate(Vector2f vec,
                                 Matrix4f src,
                                 Matrix4f dest)

Translate the source matrix and stash the result in the destination matrix

Parameters:

vec - The vector to translate by

src - The source matrix

dest - The destination matrix or null if a new matrix is to be created

Returns:

The translated matrix

transpose

public Matrix4f transpose(Matrix4f dest)

Transpose this matrix and place the result in another matrix

Parameters:

dest - The destination matrix or null if a new matrix is to be created

Returns:

the transposed matrix

transpose

public static Matrix4f transpose(Matrix4f src,
                                 Matrix4f dest)

Transpose the source matrix and place the result in the destination matrix

Parameters:

src - The source matrix

dest - The destination matrix or null if a new matrix is to be created

Returns:

the transposed matrix

determinant

public float determinant()

Specified by:

determinant in class Matrix

Returns:

the determinant of the matrix

invert

public Matrix invert()

Invert this matrix

Specified by:

invert in class Matrix

Returns:

this if successful, null otherwise

invert

public static Matrix4f invert(Matrix4f src,
                              Matrix4f dest)

Invert the source matrix and put the result in the destination

Parameters:

src - The source matrix

dest - The destination matrix, or null if a new matrix is to be created

Returns:

The inverted matrix if successful, null otherwise

negate

public Matrix negate()

Negate this matrix

Specified by:

negate in class Matrix

Returns:

this

negate

public Matrix4f negate(Matrix4f dest)

Negate this matrix and place the result in a destination matrix.

Parameters:

dest - The destination matrix, or null if a new matrix is to be created

Returns:

the negated matrix

negate

public static Matrix4f negate(Matrix4f src,
                              Matrix4f dest)

Negate this matrix and place the result in a destination matrix.

Parameters:

src - The source matrix

dest - The destination matrix, or null if a new matrix is to be created

Returns:

The negated matrix

equals

public boolean equals(java.lang.Object m)

Overrides:

equals in class java.lang.Object

equal

public static boolean equal(Matrix4f a,
                            Matrix4f b)