org.lwjgl.util.vector
Class Matrix2f

java.lang.Object
  org.lwjgl.util.vector.Matrix
      org.lwjgl.util.vector.Matrix2f

All Implemented Interfaces:

java.io.Serializable

public class Matrix2f
extends Matrix
implements java.io.Serializable

Holds a 2x2 matrix

Version:

$Revision: 3418 $ $Id: Matrix2f.java 3418 2010-09-28 21:11:35Z spasi $

Author:

cix_foo

See Also:

Serialized Form

Field Summary

float	m00
float	m01
float	m10
float	m11

Constructor Summary

Matrix2f()
Constructor for Matrix2f.

Matrix2f(Matrix2f src)
Constructor

Method Summary

static Matrix2f	add(Matrix2f left, Matrix2f right, Matrix2f dest) Add two matrices together and place the result in a third matrix.
float	determinant()
Matrix	invert() Invert this matrix
static Matrix2f	invert(Matrix2f src, Matrix2f dest) Invert the source matrix and place the result in the destination matrix.
Matrix	load(java.nio.FloatBuffer buf) Load from a float buffer.
Matrix2f	load(Matrix2f src) Load from another matrix
static Matrix2f	load(Matrix2f src, Matrix2f dest) Copy the source matrix to the destination matrix.
Matrix	loadTranspose(java.nio.FloatBuffer buf) Load from a float buffer.
static Matrix2f	mul(Matrix2f left, Matrix2f right, Matrix2f dest) Multiply the right matrix by the left and place the result in a third matrix.
Matrix	negate() Negate this matrix
Matrix2f	negate(Matrix2f dest) Negate this matrix and stash the result in another matrix.
static Matrix2f	negate(Matrix2f src, Matrix2f dest) Negate the source matrix and stash the result in the destination matrix.
Matrix	setIdentity() Set this matrix to be the identity matrix.
static Matrix2f	setIdentity(Matrix2f src) Set the source matrix to be the identity matrix.
Matrix	setZero() Set this matrix to 0.
static Matrix2f	setZero(Matrix2f src)
Matrix	store(java.nio.FloatBuffer buf) Store this matrix in a float buffer.
Matrix	storeTranspose(java.nio.FloatBuffer buf) Store this matrix in a float buffer.
static Matrix2f	sub(Matrix2f left, Matrix2f right, Matrix2f 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 Vector2f	transform(Matrix2f left, Vector2f right, Vector2f dest) Transform a Vector by a matrix and return the result in a destination vector.
Matrix	transpose() Transpose this matrix
Matrix2f	transpose(Matrix2f dest) Transpose this matrix and place the result in another matrix.
static Matrix2f	transpose(Matrix2f src, Matrix2f dest) Transpose the source matrix and place the result in the destination matrix.

Methods inherited from class java.lang.Object

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

Field Detail

m00

public float m00

m01

public float m01

m10

public float m10

m11

public float m11

Constructor Detail

Matrix2f

public Matrix2f()

Constructor for Matrix2f. The matrix is initialised to the identity.

Matrix2f

public Matrix2f(Matrix2f src)

Constructor

Method Detail

load

public Matrix2f load(Matrix2f src)

Load from another matrix

Parameters:

src - The source matrix

Returns:

this

load

public static Matrix2f load(Matrix2f src,
                            Matrix2f dest)

Copy the source matrix to the destination matrix.

Parameters:

src - The source matrix

dest - The destination matrix, or null if a new one should be created.

Returns:

The copied matrix

load

public Matrix load(java.nio.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

loadTranspose

public Matrix loadTranspose(java.nio.FloatBuffer buf)

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

Specified by:

loadTranspose in class Matrix

Parameters:

buf - A float buffer to read from

Returns:

this

store

public Matrix store(java.nio.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

storeTranspose

public Matrix storeTranspose(java.nio.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

add

public static Matrix2f add(Matrix2f left,
                           Matrix2f right,
                           Matrix2f 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 Matrix2f sub(Matrix2f left,
                           Matrix2f right,
                           Matrix2f 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 Matrix2f mul(Matrix2f left,
                           Matrix2f right,
                           Matrix2f 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 Vector2f transform(Matrix2f left,
                                 Vector2f right,
                                 Vector2f 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

transpose

public Matrix2f transpose(Matrix2f 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 Matrix2f transpose(Matrix2f src,
                                 Matrix2f dest)

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

Parameters:

src - The source matrix or null if a new matrix is to be created

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

Returns:

the transposed matrix

invert

public Matrix invert()

Invert this matrix

Specified by:

invert in class Matrix

Returns:

this if successful, null otherwise

invert

public static Matrix2f invert(Matrix2f src,
                              Matrix2f dest)

Invert the source matrix and place the result in the destination matrix.

Parameters:

src - The source matrix to be inverted

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

Returns:

The inverted matrix, or null if source can't be reverted.

toString

public java.lang.String toString()

Returns a string representation of this matrix

Overrides:

toString in class java.lang.Object

negate

public Matrix negate()

Negate this matrix

Specified by:

negate in class Matrix

Returns:

this

negate

public Matrix2f negate(Matrix2f dest)

Negate this matrix and stash the result in another matrix.

Parameters:

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

Returns:

the negated matrix

negate

public static Matrix2f negate(Matrix2f src,
                              Matrix2f dest)

Negate the source matrix and stash the result in the destination matrix.

Parameters:

src - The source matrix to be negated

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

Returns:

the negated matrix

setIdentity

public Matrix setIdentity()

Set this matrix to be the identity matrix.

Specified by:

setIdentity in class Matrix

Returns:

this

setIdentity

public static Matrix2f setIdentity(Matrix2f src)

Set the source matrix to be the identity matrix.

Parameters:

src - The matrix to set to the identity.

Returns:

The source matrix

setZero

public Matrix setZero()

Set this matrix to 0.

Specified by:

setZero in class Matrix

Returns:

this

setZero

public static Matrix2f setZero(Matrix2f src)

determinant

public float determinant()

Specified by:

determinant in class Matrix

Returns:

the determinant of the matrix