javax.vecmath

Class Matrix4f

java.lang.Object

javax.vecmath.Matrix4f

All Implemented Interfaces:

Serializable, Cloneable

public class Matrix4f
extends Object
implements Serializable, Cloneable

A single precision floating point 4 by 4 matrix. Primarily to support 3D rotations.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
float	m00 The first element of the first row.
float	m01 The second element of the first row.
float	m02 The third element of the first row.
float	m03 The fourth element of the first row.
float	m10 The first element of the second row.
float	m11 The second element of the second row.
float	m12 The third element of the second row.
float	m13 The fourth element of the second row.
float	m20 The first element of the third row.
float	m21 The second element of the third row.
float	m22 The third element of the third row.
float	m23 The fourth element of the third row.
float	m30 The first element of the fourth row.
float	m31 The second element of the fourth row.
float	m32 The third element of the fourth row.
float	m33 The fourth element of the fourth row.

Constructor Summary

Constructors

Constructor and Description
Matrix4f() Constructs and initializes a Matrix4f to all zeros.
Matrix4f(float[] v) Constructs and initializes a Matrix4f from the specified 16 element array.
Matrix4f(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) Constructs and initializes a Matrix4f from the specified 16 values.
Matrix4f(Matrix3f m1, Vector3f t1, float s) Constructs and initializes a Matrix4f from the rotation matrix, translation, and scale values; the scale is applied only to the rotational components of the matrix (upper 3x3) and not to the translational components of the matrix.
Matrix4f(Matrix4d m1) Constructs a new matrix with the same values as the Matrix4d parameter.
Matrix4f(Matrix4f m1) Constructs a new matrix with the same values as the Matrix4f parameter.
Matrix4f(Quat4f q1, Vector3f t1, float s) Constructs and initializes a Matrix4f from the quaternion, translation, and scale values; the scale is applied only to the rotational components of the matrix (upper 3x3) and not to the translational components.

Method Summary

Methods

Modifier and Type	Method and Description
void	add(float scalar) Adds a scalar to each component of this matrix.
void	add(float scalar, Matrix4f m1) Adds a scalar to each component of the matrix m1 and places the result into this.
void	add(Matrix4f m1) Sets the value of this matrix to the sum of itself and matrix m1.
void	add(Matrix4f m1, Matrix4f m2) Sets the value of this matrix to the matrix sum of matrices m1 and m2.
Object	clone() Creates a new object of the same class as this object.
float	determinant() Computes the determinate of this matrix.
boolean	epsilonEquals(Matrix4f m1, float epsilon) Returns true if the L-infinite distance between this matrix and matrix m1 is less than or equal to the epsilon parameter, otherwise returns false.
boolean	equals(Matrix4f m1) Returns true if all of the data members of Matrix4f m1 are equal to the corresponding data members in this Matrix4f.
boolean	equals(Object t1) Returns true if the Object t1 is of type Matrix4f and all of the data members of t1 are equal to the corresponding data members in this Matrix4f.
void	get(Matrix3d m1) Performs an SVD normalization of this matrix in order to acquire the normalized rotational component; the values are placed into the Matrix3d parameter.
void	get(Matrix3f m1) Performs an SVD normalization of this matrix in order to acquire the normalized rotational component; the values are placed into the Matrix3f parameter.
float	get(Matrix3f m1, Vector3f t1) Performs an SVD normalization of this matrix to calculate the rotation as a 3x3 matrix, the translation, and the scale.
void	get(Quat4f q1) Performs an SVD normalization of this matrix in order to acquire the normalized rotational component; the values are placed into the Quat4f parameter.
void	get(Vector3f trans) Retrieves the translational components of this matrix.
void	getColumn(int column, float[] v) Copies the matrix values in the specified column into the array parameter.
void	getColumn(int column, Vector4f v) Copies the matrix values in the specified column into the vector parameter.
float	getElement(int row, int column) Retrieves the value at the specified row and column of this matrix.
float	getM00() Get the first matrix element in the first row.
float	getM01() Get the second matrix element in the first row.
float	getM02() Get the third matrix element in the first row.
float	getM03() Get the fourth element of the first row.
float	getM10() Get first matrix element in the second row.
float	getM11() Get second matrix element in the second row.
float	getM12() Get the third matrix element in the second row.
float	getM13() Get the fourth element of the second row.
float	getM20() Get the first matrix element in the third row.
float	getM21() Get the second matrix element in the third row.
float	getM22() Get the third matrix element in the third row.
float	getM23() Get the fourth element of the third row.
float	getM30() Get the first element of the fourth row.
float	getM31() Get the second element of the fourth row.
float	getM32() Get the third element of the fourth row.
float	getM33() Get the fourth element of the fourth row.
void	getRotationScale(Matrix3f m1) Gets the upper 3x3 values of this matrix and places them into the matrix m1.
void	getRow(int row, float[] v) Copies the matrix values in the specified row into the array parameter.
void	getRow(int row, Vector4f v) Copies the matrix values in the specified row into the vector parameter.
float	getScale() Performs an SVD normalization of this matrix to calculate and return the uniform scale factor.
int	hashCode() Returns a hash code value based on the data values in this object.
void	invert() Inverts this matrix in place.
void	invert(Matrix4f m1) Sets the value of this matrix to the matrix inverse of the passed (user declared) matrix m1.
void	mul(float scalar) Multiplies each element of this matrix by a scalar.
void	mul(float scalar, Matrix4f m1) Multiplies each element of matrix m1 by a scalar and places the result into this.
void	mul(Matrix4f m1) Sets the value of this matrix to the result of multiplying itself with matrix m1.
void	mul(Matrix4f m1, Matrix4f m2) Sets the value of this matrix to the result of multiplying the two argument matrices together.
void	mulTransposeBoth(Matrix4f m1, Matrix4f m2) Multiplies the transpose of matrix m1 times the transpose of matrix m2, and places the result into this.
void	mulTransposeLeft(Matrix4f m1, Matrix4f m2) Multiplies the transpose of matrix m1 times matrix m2, and places the result into this.
void	mulTransposeRight(Matrix4f m1, Matrix4f m2) Multiplies matrix m1 times the transpose of matrix m2, and places the result into this.
void	negate() Negates the value of this matrix: this = -this.
void	negate(Matrix4f m1) Sets the value of this matrix equal to the negation of of the Matrix4f parameter.
void	rotX(float angle) Sets the value of this matrix to a counter clockwise rotation about the x axis.
void	rotY(float angle) Sets the value of this matrix to a counter clockwise rotation about the y axis.
void	rotZ(float angle) Sets the value of this matrix to a counter clockwise rotation about the z axis.
void	set(AxisAngle4d a1) Sets the value of this matrix to the matrix conversion of the double precision axis and angle argument.
void	set(AxisAngle4f a1) Sets the value of this matrix to the matrix conversion of the (single precision) axis and angle argument.
void	set(float scale) Sets the value of this matrix to a scale matrix with the the passed scale amount.
void	set(float[] m) Sets the values in this Matrix4f equal to the row-major array parameter (ie, the first four elements of the array will be copied into the first row of this matrix, etc.).
void	set(float scale, Vector3f t1) Sets the value of this transform to a scale and translation matrix; the scale is not applied to the translation and all of the matrix values are modified.
void	set(Matrix3d m1) Sets the rotational component (upper 3x3) of this matrix to the matrix values in the double precision Matrix3d argument; the other elements of this matrix are initialized as if this were an identity matrix (i.e., affine matrix with no translational component).
void	set(Matrix3d m1, Vector3d t1, double scale) Sets the value of this matrix from the rotation expressed by the rotation matrix m1, the translation t1, and the scale factor.
void	set(Matrix3f m1) Sets the rotational component (upper 3x3) of this matrix to the matrix values in the single precision Matrix3f argument; the other elements of this matrix are initialized as if this were an identity matrix (i.e., affine matrix with no translational component).
void	set(Matrix3f m1, Vector3f t1, float scale) Sets the value of this matrix from the rotation expressed by the rotation matrix m1, the translation t1, and the scale factor.
void	set(Matrix4d m1) Sets the value of this matrix to the float value of the passed matrix4d m1.
void	set(Matrix4f m1) Sets the value of this matrix to a copy of the passed matrix m1.
void	set(Quat4d q1) Sets the value of this matrix to the matrix conversion of the double precision quaternion argument.
void	set(Quat4d q1, Vector3d t1, double s) Sets the value of this matrix from the rotation expressed by the quaternion q1, the translation t1, and the scale s.
void	set(Quat4f q1) Sets the value of this matrix to the matrix conversion of the single precision quaternion argument.
void	set(Quat4f q1, Vector3f t1, float s) Sets the value of this matrix from the rotation expressed by the quaternion q1, the translation t1, and the scale s.
void	set(Vector3f v1) Sets the value of this matrix to a translate matrix with the passed translation value.
void	set(Vector3f t1, float scale) Sets the value of this transform to a scale and translation matrix; the translation is scaled by the scale factor and all of the matrix values are modified.
void	setColumn(int column, float[] v) Sets the specified column of this matrix4f to the four values provided.
void	setColumn(int column, float x, float y, float z, float w) Sets the specified column of this matrix4f to the four values provided.
void	setColumn(int column, Vector4f v) Sets the specified column of this matrix4f to the vector provided.
void	setElement(int row, int column, float value) Sets the specified element of this matrix4f to the value provided.
void	setIdentity() Sets this Matrix4f to identity.
void	setM00(float m00) Set the first matrix element in the first row.
void	setM01(float m01) Set the second matrix element in the first row.
void	setM02(float m02) Set the third matrix element in the first row.
void	setM03(float m03) Set the fourth element of the first row.
void	setM10(float m10) Set first matrix element in the second row.
void	setM11(float m11) Set the second matrix element in the second row.
void	setM12(float m12) Set the third matrix element in the second row.
void	setM13(float m13) Set the fourth element of the second row.
void	setM20(float m20) Set the first matrix element in the third row.
void	setM21(float m21) Set the second matrix element in the third row.
void	setM22(float m22) Set the third matrix element in the third row.
void	setM23(float m23) Set the fourth element of the third row.
void	setM30(float m30) Set the first element of the fourth row.
void	setM31(float m31) Set the second element of the fourth row.
void	setM32(float m32) Set the third element of the fourth row.
void	setM33(float m33) Set the fourth element of the fourth row.
void	setRotation(AxisAngle4f a1) Sets the rotational component (upper 3x3) of this matrix to the matrix equivalent values of the axis-angle argument; the other elements of this matrix are unchanged; a singular value decomposition is performed on this object's upper 3x3 matrix to factor out the scale, then this object's upper 3x3 matrix components are replaced by the matrix equivalent of the axis-angle, and then the scale is reapplied to the rotational components.
void	setRotation(Matrix3d m1) Sets the rotational component (upper 3x3) of this matrix to the matrix values in the double precision Matrix3d argument; the other elements of this matrix are unchanged; a singular value decomposition is performed on this object's upper 3x3 matrix to factor out the scale, then this object's upper 3x3 matrix components are replaced by the passed rotation components, and then the scale is reapplied to the rotational components.
void	setRotation(Matrix3f m1) Sets the rotational component (upper 3x3) of this matrix to the matrix values in the single precision Matrix3f argument; the other elements of this matrix are unchanged; a singular value decomposition is performed on this object's upper 3x3 matrix to factor out the scale, then this object's upper 3x3 matrix components are replaced by the passed rotation components, and then the scale is reapplied to the rotational components.
void	setRotation(Quat4d q1) Sets the rotational component (upper 3x3) of this matrix to the matrix equivalent values of the quaternion argument; the other elements of this matrix are unchanged; a singular value decomposition is performed on this object's upper 3x3 matrix to factor out the scale, then this object's upper 3x3 matrix components are replaced by the matrix equivalent of the quaternion, and then the scale is reapplied to the rotational components.
void	setRotation(Quat4f q1) Sets the rotational component (upper 3x3) of this matrix to the matrix equivalent values of the quaternion argument; the other elements of this matrix are unchanged; a singular value decomposition is performed on this object's upper 3x3 matrix to factor out the scale, then this object's upper 3x3 matrix components are replaced by the matrix equivalent of the quaternion, and then the scale is reapplied to the rotational components.
void	setRotationScale(Matrix3f m1) Replaces the upper 3x3 matrix values of this matrix with the values in the matrix m1.
void	setRow(int row, float[] v) Sets the specified row of this matrix4f to the four values provided in the passed array.
void	setRow(int row, float x, float y, float z, float w) Sets the specified row of this matrix4f to the four values provided.
void	setRow(int row, Vector4f v) Sets the specified row of this matrix4f to the Vector provided.
void	setScale(float scale) Sets the scale component of the current matrix by factoring out the current scale (by doing an SVD) from the rotational component and multiplying by the new scale.
void	setTranslation(Vector3f trans) Modifies the translational components of this matrix to the values of the Vector3f argument; the other values of this matrix are not modified.
void	setZero() Sets this matrix to all zeros.
void	sub(Matrix4f m1) Sets this matrix to the matrix difference of itself and matrix m1 (this = this - m1).
void	sub(Matrix4f m1, Matrix4f m2) Performs an element-by-element subtraction of matrix m2 from matrix m1 and places the result into matrix this (this = m2 - m1).
String	toString() Returns a string that contains the values of this Matrix4f.
void	transform(Point3f point) Transforms the point parameter with this Matrix4f and places the result back into point.
void	transform(Point3f point, Point3f pointOut) Transforms the point parameter with this Matrix4f and places the result into pointOut.
void	transform(Tuple4f vec) Transform the vector vec using this Transform and place the result back into vec.
void	transform(Tuple4f vec, Tuple4f vecOut) Transform the vector vec using this Matrix4f and place the result into vecOut.
void	transform(Vector3f normal) Transforms the normal parameter by this transform and places the value back into normal.
void	transform(Vector3f normal, Vector3f normalOut) Transforms the normal parameter by this Matrix4f and places the value into normalOut.
void	transpose() Sets the value of this matrix to its transpose in place.
void	transpose(Matrix4f m1) Sets the value of this matrix to the transpose of the argument matrix.

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

m00

public float m00

The first element of the first row.

m01

public float m01

The second element of the first row.

m02

public float m02

The third element of the first row.

m03

public float m03

The fourth element of the first row.

m10

public float m10

The first element of the second row.

m11

public float m11

The second element of the second row.

m12

public float m12

The third element of the second row.

m13

public float m13

The fourth element of the second row.

m20

public float m20

The first element of the third row.

m21

public float m21

The second element of the third row.

m22

public float m22

The third element of the third row.

m23

public float m23

The fourth element of the third row.

m30

public float m30

The first element of the fourth row.

m31

public float m31

The second element of the fourth row.

m32

public float m32

The third element of the fourth row.

m33

public float m33

The fourth element of the fourth row.

Constructor Detail

Matrix4f

public Matrix4f(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)

Constructs and initializes a Matrix4f from the specified 16 values.

Parameters:

m00 - the [0][0] element

m01 - the [0][1] element

m02 - the [0][2] element

m03 - the [0][3] element

m10 - the [1][0] element

m11 - the [1][1] element

m12 - the [1][2] element

m13 - the [1][3] element

m20 - the [2][0] element

m21 - the [2][1] element

m22 - the [2][2] element

m23 - the [2][3] element

m30 - the [3][0] element

m31 - the [3][1] element

m32 - the [3][2] element

m33 - the [3][3] element

Matrix4f

public Matrix4f(float[] v)

Constructs and initializes a Matrix4f from the specified 16 element array. this.m00 =v[0], this.m01=v[1], etc.

Parameters:

v - the array of length 16 containing in order

Matrix4f

public Matrix4f(Quat4f q1,
        Vector3f t1,
        float s)

Constructs and initializes a Matrix4f from the quaternion, translation, and scale values; the scale is applied only to the rotational components of the matrix (upper 3x3) and not to the translational components.

Parameters:

q1 - the quaternion value representing the rotational component

t1 - the translational component of the matrix

s - the scale value applied to the rotational components

Matrix4f

public Matrix4f(Matrix4d m1)

Constructs a new matrix with the same values as the Matrix4d parameter.

Parameters:

m1 - the source matrix

Matrix4f

public Matrix4f(Matrix4f m1)

Constructs a new matrix with the same values as the Matrix4f parameter.

Parameters:

m1 - the source matrix

Matrix4f

public Matrix4f(Matrix3f m1,
        Vector3f t1,
        float s)

Constructs and initializes a Matrix4f from the rotation matrix, translation, and scale values; the scale is applied only to the rotational components of the matrix (upper 3x3) and not to the translational components of the matrix.

Parameters:

m1 - the rotation matrix representing the rotational components

t1 - the translational components of the matrix

s - the scale value applied to the rotational components

Matrix4f

public Matrix4f()

Constructs and initializes a Matrix4f to all zeros.

Method Detail

toString

public String toString()

Returns a string that contains the values of this Matrix4f.

Overrides:

toString in class Object

Returns:

the String representation

setIdentity

public final void setIdentity()

Sets this Matrix4f to identity.

setElement

public final void setElement(int row,
              int column,
              float value)

Sets the specified element of this matrix4f to the value provided.

Parameters:

row - the row number to be modified (zero indexed)

column - the column number to be modified (zero indexed)

value - the new value

getElement

public final float getElement(int row,
               int column)

Retrieves the value at the specified row and column of this matrix.

Parameters:

row - the row number to be retrieved (zero indexed)

column - the column number to be retrieved (zero indexed)

Returns:

the value at the indexed element

getRow

public final void getRow(int row,
          Vector4f v)

Copies the matrix values in the specified row into the vector parameter.

Parameters:

row - the matrix row

v - the vector into which the matrix row values will be copied

getRow

public final void getRow(int row,
          float[] v)

Copies the matrix values in the specified row into the array parameter.

Parameters:

row - the matrix row

v - the array into which the matrix row values will be copied

getColumn

public final void getColumn(int column,
             Vector4f v)

Copies the matrix values in the specified column into the vector parameter.

Parameters:

column - the matrix column

v - the vector into which the matrix row values will be copied

getColumn

public final void getColumn(int column,
             float[] v)

Copies the matrix values in the specified column into the array parameter.

Parameters:

column - the matrix column

v - the array into which the matrix row values will be copied

setScale

public final void setScale(float scale)

Sets the scale component of the current matrix by factoring out the current scale (by doing an SVD) from the rotational component and multiplying by the new scale.

Parameters:

scale - the new scale amount

get

public final void get(Matrix3d m1)

Performs an SVD normalization of this matrix in order to acquire the normalized rotational component; the values are placed into the Matrix3d parameter.

Parameters:

m1 - matrix into which the rotational component is placed

get

public final void get(Matrix3f m1)

Performs an SVD normalization of this matrix in order to acquire the normalized rotational component; the values are placed into the Matrix3f parameter.

Parameters:

m1 - matrix into which the rotational component is placed

get

public final float get(Matrix3f m1,
        Vector3f t1)

Performs an SVD normalization of this matrix to calculate the rotation as a 3x3 matrix, the translation, and the scale. None of the matrix values are modified.

Parameters:

m1 - the normalized matrix representing the rotation

t1 - the translation component

Returns:

the scale component of this transform

get

public final void get(Quat4f q1)

Performs an SVD normalization of this matrix in order to acquire the normalized rotational component; the values are placed into the Quat4f parameter.

Parameters:

q1 - quaternion into which the rotation component is placed

get

public final void get(Vector3f trans)

Retrieves the translational components of this matrix.

Parameters:

trans - the vector that will receive the translational component

getRotationScale

public final void getRotationScale(Matrix3f m1)

Gets the upper 3x3 values of this matrix and places them into the matrix m1.

Parameters:

m1 - the matrix that will hold the values

getScale

public final float getScale()

Performs an SVD normalization of this matrix to calculate and return the uniform scale factor. If the matrix has non-uniform scale factors, the largest of the x, y, and z scale factors will be returned. This matrix is not modified.

Returns:

the scale factor of this matrix

setRotationScale

public final void setRotationScale(Matrix3f m1)

Replaces the upper 3x3 matrix values of this matrix with the values in the matrix m1.

Parameters:

m1 - the matrix that will be the new upper 3x3

setRow

public final void setRow(int row,
          float x,
          float y,
          float z,
          float w)

Sets the specified row of this matrix4f to the four values provided.

Parameters:

row - the row number to be modified (zero indexed)

x - the first column element

y - the second column element

z - the third column element

w - the fourth column element

setRow

public final void setRow(int row,
          Vector4f v)

Sets the specified row of this matrix4f to the Vector provided.

Parameters:

row - the row number to be modified (zero indexed)

v - the replacement row

setRow

public final void setRow(int row,
          float[] v)

Sets the specified row of this matrix4f to the four values provided in the passed array.

Parameters:

row - the row number to be modified (zero indexed)

v - the replacement row

setColumn

public final void setColumn(int column,
             float x,
             float y,
             float z,
             float w)

Sets the specified column of this matrix4f to the four values provided.

Parameters:

column - the column number to be modified (zero indexed)

x - the first row element

y - the second row element

z - the third row element

w - the fourth row element

setColumn

public final void setColumn(int column,
             Vector4f v)

Sets the specified column of this matrix4f to the vector provided.

Parameters:

column - the column number to be modified (zero indexed)

v - the replacement column

setColumn

public final void setColumn(int column,
             float[] v)

Sets the specified column of this matrix4f to the four values provided.

Parameters:

column - the column number to be modified (zero indexed)

v - the replacement column

add

public final void add(float scalar)

Adds a scalar to each component of this matrix.

Parameters:

scalar - the scalar adder

add

public final void add(float scalar,
       Matrix4f m1)

Adds a scalar to each component of the matrix m1 and places the result into this. Matrix m1 is not modified.

Parameters:

scalar - the scalar adder

m1 - the original matrix values

add

public final void add(Matrix4f m1,
       Matrix4f m2)

Sets the value of this matrix to the matrix sum of matrices m1 and m2.

Parameters:

m1 - the first matrix

m2 - the second matrix

add

public final void add(Matrix4f m1)

Sets the value of this matrix to the sum of itself and matrix m1.

Parameters:

m1 - the other matrix

sub

public final void sub(Matrix4f m1,
       Matrix4f m2)

Performs an element-by-element subtraction of matrix m2 from matrix m1 and places the result into matrix this (this = m2 - m1).

Parameters:

m1 - the first matrix

m2 - the second matrix

sub

public final void sub(Matrix4f m1)

Sets this matrix to the matrix difference of itself and matrix m1 (this = this - m1).

Parameters:

m1 - the other matrix

transpose

public final void transpose()

Sets the value of this matrix to its transpose in place.

transpose

public final void transpose(Matrix4f m1)

Sets the value of this matrix to the transpose of the argument matrix.

Parameters:

m1 - the matrix to be transposed

set

public final void set(Quat4f q1)

Sets the value of this matrix to the matrix conversion of the single precision quaternion argument.

Parameters:

q1 - the quaternion to be converted

set

public final void set(AxisAngle4f a1)

Sets the value of this matrix to the matrix conversion of the (single precision) axis and angle argument.

Parameters:

a1 - the axis and angle to be converted

set

public final void set(Quat4d q1)

Sets the value of this matrix to the matrix conversion of the double precision quaternion argument.

Parameters:

q1 - the quaternion to be converted

set

public final void set(AxisAngle4d a1)

Sets the value of this matrix to the matrix conversion of the double precision axis and angle argument.

Parameters:

a1 - the axis and angle to be converted

set

public final void set(Quat4d q1,
       Vector3d t1,
       double s)

Sets the value of this matrix from the rotation expressed by the quaternion q1, the translation t1, and the scale s.

Parameters:

q1 - the rotation expressed as a quaternion

t1 - the translation

s - the scale value

set

public final void set(Quat4f q1,
       Vector3f t1,
       float s)

Sets the value of this matrix from the rotation expressed by the quaternion q1, the translation t1, and the scale s.

Parameters:

q1 - the rotation expressed as a quaternion

t1 - the translation

s - the scale value

set

public final void set(Matrix4d m1)

Sets the value of this matrix to the float value of the passed matrix4d m1.

Parameters:

m1 - the matrix4d to be converted to float

set

public final void set(Matrix4f m1)

Sets the value of this matrix to a copy of the passed matrix m1.

Parameters:

m1 - the matrix to be copied

invert

public final void invert(Matrix4f m1)

Sets the value of this matrix to the matrix inverse of the passed (user declared) matrix m1.

Parameters:

m1 - the matrix to be inverted

invert

public final void invert()

Inverts this matrix in place.

determinant

public final float determinant()

Computes the determinate of this matrix.

Returns:

the determinate of the matrix

set

public final void set(Matrix3f m1)

Sets the rotational component (upper 3x3) of this matrix to the matrix values in the single precision Matrix3f argument; the other elements of this matrix are initialized as if this were an identity matrix (i.e., affine matrix with no translational component).

Parameters:

m1 - the single-precision 3x3 matrix

set

public final void set(Matrix3d m1)

Sets the rotational component (upper 3x3) of this matrix to the matrix values in the double precision Matrix3d argument; the other elements of this matrix are initialized as if this were an identity matrix (i.e., affine matrix with no translational component).

Parameters:

m1 - the double-precision 3x3 matrix

set

public final void set(float scale)

Sets the value of this matrix to a scale matrix with the the passed scale amount.

Parameters:

scale - the scale factor for the matrix

set

public final void set(float[] m)

Sets the values in this Matrix4f equal to the row-major array parameter (ie, the first four elements of the array will be copied into the first row of this matrix, etc.).

Parameters:

m - the single precision array of length 16

set

public final void set(Vector3f v1)

Sets the value of this matrix to a translate matrix with the passed translation value.

Parameters:

v1 - the translation amount

set

public final void set(float scale,
       Vector3f t1)

Sets the value of this transform to a scale and translation matrix; the scale is not applied to the translation and all of the matrix values are modified.

Parameters:

scale - the scale factor for the matrix

t1 - the translation amount

set

public final void set(Vector3f t1,
       float scale)

Sets the value of this transform to a scale and translation matrix; the translation is scaled by the scale factor and all of the matrix values are modified.

Parameters:

t1 - the translation amount

scale - the scale factor for the matrix

set

public final void set(Matrix3f m1,
       Vector3f t1,
       float scale)

Sets the value of this matrix from the rotation expressed by the rotation matrix m1, the translation t1, and the scale factor. The translation is not modified by the scale.

Parameters:

m1 - the rotation component

t1 - the translation component

scale - the scale component

set

public final void set(Matrix3d m1,
       Vector3d t1,
       double scale)

Sets the value of this matrix from the rotation expressed by the rotation matrix m1, the translation t1, and the scale factor. The translation is not modified by the scale.

Parameters:

m1 - the rotation component

t1 - the translation component

scale - the scale factor

setTranslation

public final void setTranslation(Vector3f trans)

Modifies the translational components of this matrix to the values of the Vector3f argument; the other values of this matrix are not modified.

Parameters:

trans - the translational component

rotX

public final void rotX(float angle)

Sets the value of this matrix to a counter clockwise rotation about the x axis.

Parameters:

angle - the angle to rotate about the X axis in radians

rotY

public final void rotY(float angle)

Sets the value of this matrix to a counter clockwise rotation about the y axis.

Parameters:

angle - the angle to rotate about the Y axis in radians

rotZ

public final void rotZ(float angle)

Sets the value of this matrix to a counter clockwise rotation about the z axis.

Parameters:

angle - the angle to rotate about the Z axis in radians

mul

public final void mul(float scalar)

Multiplies each element of this matrix by a scalar.

Parameters:

scalar - the scalar multiplier.

mul

public final void mul(float scalar,
       Matrix4f m1)

Multiplies each element of matrix m1 by a scalar and places the result into this. Matrix m1 is not modified.

Parameters:

scalar - the scalar multiplier.

m1 - the original matrix.

mul

public final void mul(Matrix4f m1)

Sets the value of this matrix to the result of multiplying itself with matrix m1.

Parameters:

m1 - the other matrix

mul

public final void mul(Matrix4f m1,
       Matrix4f m2)

Sets the value of this matrix to the result of multiplying the two argument matrices together.

Parameters:

m1 - the first matrix

m2 - the second matrix

mulTransposeBoth

public final void mulTransposeBoth(Matrix4f m1,
                    Matrix4f m2)

Multiplies the transpose of matrix m1 times the transpose of matrix m2, and places the result into this.

Parameters:

m1 - the matrix on the left hand side of the multiplication

m2 - the matrix on the right hand side of the multiplication

mulTransposeRight

public final void mulTransposeRight(Matrix4f m1,
                     Matrix4f m2)

Multiplies matrix m1 times the transpose of matrix m2, and places the result into this.

Parameters:

m1 - the matrix on the left hand side of the multiplication

m2 - the matrix on the right hand side of the multiplication

mulTransposeLeft

public final void mulTransposeLeft(Matrix4f m1,
                    Matrix4f m2)

Multiplies the transpose of matrix m1 times matrix m2, and places the result into this.

Parameters:

m1 - the matrix on the left hand side of the multiplication

m2 - the matrix on the right hand side of the multiplication

equals

public boolean equals(Matrix4f m1)

Returns true if all of the data members of Matrix4f m1 are equal to the corresponding data members in this Matrix4f.

Parameters:

m1 - the matrix with which the comparison is made.

Returns:

true or false

equals

public boolean equals(Object t1)

Returns true if the Object t1 is of type Matrix4f and all of the data members of t1 are equal to the corresponding data members in this Matrix4f.

Overrides:

equals in class Object

Parameters:

t1 - the matrix with which the comparison is made.

Returns:

true or false

epsilonEquals

public boolean epsilonEquals(Matrix4f m1,
                    float epsilon)

Returns true if the L-infinite distance between this matrix and matrix m1 is less than or equal to the epsilon parameter, otherwise returns false. The L-infinite distance is equal to MAX[i=0,1,2,3 ; j=0,1,2,3 ; abs(this.m(i,j) - m1.m(i,j)]

Parameters:

m1 - the matrix to be compared to this matrix

epsilon - the threshold value

hashCode

public int hashCode()

Returns a hash code value based on the data values in this object. Two different Matrix4f objects with identical data values (i.e., Matrix4f.equals returns true) will return the same hash code value. Two objects with different data members may return the same hash value, although this is not likely.

Overrides:

hashCode in class Object

Returns:

the integer hash code value

transform

public final void transform(Tuple4f vec,
             Tuple4f vecOut)

Transform the vector vec using this Matrix4f and place the result into vecOut.

Parameters:

vec - the single precision vector to be transformed

vecOut - the vector into which the transformed values are placed

transform

public final void transform(Tuple4f vec)

Transform the vector vec using this Transform and place the result back into vec.

Parameters:

vec - the single precision vector to be transformed

transform

public final void transform(Point3f point,
             Point3f pointOut)

Transforms the point parameter with this Matrix4f and places the result into pointOut. The fourth element of the point input paramter is assumed to be one.

Parameters:

point - the input point to be transformed.

pointOut - the transformed point

transform

public final void transform(Point3f point)

Transforms the point parameter with this Matrix4f and places the result back into point. The fourth element of the point input paramter is assumed to be one.

Parameters:

point - the input point to be transformed.

transform

public final void transform(Vector3f normal,
             Vector3f normalOut)

Transforms the normal parameter by this Matrix4f and places the value into normalOut. The fourth element of the normal is assumed to be zero.

Parameters:

normal - the input normal to be transformed.

normalOut - the transformed normal

transform

public final void transform(Vector3f normal)

Transforms the normal parameter by this transform and places the value back into normal. The fourth element of the normal is assumed to be zero.

Parameters:

normal - the input normal to be transformed.

setRotation

public final void setRotation(Matrix3d m1)

Sets the rotational component (upper 3x3) of this matrix to the matrix values in the double precision Matrix3d argument; the other elements of this matrix are unchanged; a singular value decomposition is performed on this object's upper 3x3 matrix to factor out the scale, then this object's upper 3x3 matrix components are replaced by the passed rotation components, and then the scale is reapplied to the rotational components.

Parameters:

m1 - double precision 3x3 matrix

setRotation

public final void setRotation(Matrix3f m1)

Sets the rotational component (upper 3x3) of this matrix to the matrix values in the single precision Matrix3f argument; the other elements of this matrix are unchanged; a singular value decomposition is performed on this object's upper 3x3 matrix to factor out the scale, then this object's upper 3x3 matrix components are replaced by the passed rotation components, and then the scale is reapplied to the rotational components.

Parameters:

m1 - single precision 3x3 matrix

setRotation

public final void setRotation(Quat4f q1)

Sets the rotational component (upper 3x3) of this matrix to the matrix equivalent values of the quaternion argument; the other elements of this matrix are unchanged; a singular value decomposition is performed on this object's upper 3x3 matrix to factor out the scale, then this object's upper 3x3 matrix components are replaced by the matrix equivalent of the quaternion, and then the scale is reapplied to the rotational components.

Parameters:

q1 - the quaternion that specifies the rotation

setRotation

public final void setRotation(Quat4d q1)

Sets the rotational component (upper 3x3) of this matrix to the matrix equivalent values of the quaternion argument; the other elements of this matrix are unchanged; a singular value decomposition is performed on this object's upper 3x3 matrix to factor out the scale, then this object's upper 3x3 matrix components are replaced by the matrix equivalent of the quaternion, and then the scale is reapplied to the rotational components.

Parameters:

q1 - the quaternion that specifies the rotation

setRotation

public final void setRotation(AxisAngle4f a1)

Sets the rotational component (upper 3x3) of this matrix to the matrix equivalent values of the axis-angle argument; the other elements of this matrix are unchanged; a singular value decomposition is performed on this object's upper 3x3 matrix to factor out the scale, then this object's upper 3x3 matrix components are replaced by the matrix equivalent of the axis-angle, and then the scale is reapplied to the rotational components.

Parameters:

a1 - the axis-angle to be converted (x, y, z, angle)

setZero

public final void setZero()

Sets this matrix to all zeros.

negate

public final void negate()

Negates the value of this matrix: this = -this.

negate

public final void negate(Matrix4f m1)

Sets the value of this matrix equal to the negation of of the Matrix4f parameter.

Parameters:

m1 - the source matrix

clone

public Object clone()

Creates a new object of the same class as this object.

Overrides:

clone in class Object

Returns:

a clone of this instance.

Throws:

OutOfMemoryError - if there is not enough memory.

Since:

vecmath 1.3

See Also:

Cloneable

getM00

public final float getM00()

Get the first matrix element in the first row.

Returns:

Returns the m00.

Since:

vecmath 1.5

setM00

public final void setM00(float m00)

Set the first matrix element in the first row.

Parameters:

m00 - The m00 to set.

Since:

vecmath 1.5

getM01

public final float getM01()

Get the second matrix element in the first row.

Returns:

Returns the m01.

Since:

vecmath 1.5

setM01

public final void setM01(float m01)

Set the second matrix element in the first row.

Parameters:

m01 - The m01 to set.

Since:

vecmath 1.5

getM02

public final float getM02()

Get the third matrix element in the first row.

Returns:

Returns the m02.

Since:

vecmath 1.5

setM02

public final void setM02(float m02)

Set the third matrix element in the first row.

Parameters:

m02 - The m02 to set.

Since:

vecmath 1.5

getM10

public final float getM10()

Get first matrix element in the second row.

Returns:

Returns the m10.

Since:

vecmath 1.5

setM10

public final void setM10(float m10)

Set first matrix element in the second row.

Parameters:

m10 - The m10 to set.

Since:

vecmath 1.5

getM11

public final float getM11()

Get second matrix element in the second row.

Returns:

Returns the m11.

Since:

vecmath 1.5

setM11

public final void setM11(float m11)

Set the second matrix element in the second row.

Parameters:

m11 - The m11 to set.

Since:

vecmath 1.5

getM12

public final float getM12()

Get the third matrix element in the second row.

Returns:

Returns the m12.

Since:

vecmath 1.5

setM12

public final void setM12(float m12)

Set the third matrix element in the second row.

Parameters:

m12 - The m12 to set.

Since:

vecmath 1.5

getM20

public final float getM20()

Get the first matrix element in the third row.

Returns:

Returns the m20.

Since:

vecmath 1.5

setM20

public final void setM20(float m20)

Set the first matrix element in the third row.

Parameters:

m20 - The m20 to set.

Since:

vecmath 1.5

getM21

public final float getM21()

Get the second matrix element in the third row.

Returns:

Returns the m21.

Since:

vecmath 1.5

setM21

public final void setM21(float m21)

Set the second matrix element in the third row.

Parameters:

m21 - The m21 to set.

Since:

vecmath 1.5

getM22

public final float getM22()

Get the third matrix element in the third row.

Returns:

Returns the m22.

Since:

vecmath 1.5

setM22

public final void setM22(float m22)

Set the third matrix element in the third row.

Parameters:

m22 - The m22 to set.

Since:

vecmath 1.5

getM03

public final float getM03()

Get the fourth element of the first row.

Returns:

Returns the m03.

Since:

vecmath 1.5

setM03

public final void setM03(float m03)

Set the fourth element of the first row.

Parameters:

m03 - The m03 to set.

Since:

vecmath 1.5

getM13

public final float getM13()

Get the fourth element of the second row.

Returns:

Returns the m13.

Since:

vecmath 1.5

setM13

public final void setM13(float m13)

Set the fourth element of the second row.

Parameters:

m13 - The m13 to set.

Since:

vecmath 1.5

getM23

public final float getM23()

Get the fourth element of the third row.

Returns:

Returns the m23.

Since:

vecmath 1.5

setM23

public final void setM23(float m23)

Set the fourth element of the third row.

Parameters:

m23 - The m23 to set.

Since:

vecmath 1.5

getM30

public final float getM30()

Get the first element of the fourth row.

Returns:

Returns the m30.

Since:

vecmath 1.5

setM30

public final void setM30(float m30)

Set the first element of the fourth row.

Parameters:

m30 - The m30 to set.

Since:

vecmath 1.5

getM31

public final float getM31()

Get the second element of the fourth row.

Returns:

Returns the m31.

Since:

vecmath 1.5

setM31

public final void setM31(float m31)

Set the second element of the fourth row.

Parameters:

m31 - The m31 to set.

Since:

vecmath 1.5

getM32

public final float getM32()

Get the third element of the fourth row.

Returns:

Returns the m32.

Since:

vecmath 1.5

setM32

public final void setM32(float m32)

Set the third element of the fourth row.

Parameters:

m32 - The m32 to set.

Since:

vecmath 1.5

getM33

public final float getM33()

Get the fourth element of the fourth row.

Returns:

Returns the m33.

Since:

vecmath 1.5

setM33

public final void setM33(float m33)

Set the fourth element of the fourth row.

Parameters:

m33 - The m33 to set.

Since:

vecmath 1.5