org.lwjgl.util.vector
Class Matrix2f

java.lang.Object
  extended by org.lwjgl.util.vector.Matrix
      extended by 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


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