javax.vecmath
Class Matrix4f

java.lang.Object
  javax.vecmath.Matrix4f

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

public class Matrix4f
extends java.lang.Object
implements java.io.Serializable, java.lang.Cloneable

A single precision floating point 4 by 4 matrix.

Author:

Kenji hiranabe

See Also:

Serialized Form

Field Summary

float	m00 The first element of the first row.
float	m01 The second element of the first row.
float	m02 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

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.

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

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 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.
java.lang.Object	clone()
float	determinant() Computes the determinant 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(java.lang.Object o1) Returns true if the Object o1 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.
java.util.List<java.lang.Float>	getElements() Puts all elements of the matrix in a list of size 16.
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 number based on the data values in this object.
void	invert() Sets the value of this matrix to its inverse.
void	invert(Matrix4f m1) Sets the value of this matrix to the matrix inverse of the passed 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 rotation matrix about the x axis by the passed angle.
void	rotY(float angle) Sets the value of this matrix to a rotation matrix about the y axis by the passed angle.
void	rotZ(float angle) Sets the value of this matrix to a rotation matrix about the z axis by the passed angle.
void	set(AxisAngle4d a1) Sets the value of this matrix to the matrix conversion of the single 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 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(java.lang.Float[] m)
void	set(float scale, Vector3f v1) Sets the value of this matrix to a scale and translation matrix; 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 (ie, 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 s.
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 (ie, 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 s.
void	set(Matrix4d m1) Sets the value of this matrix to a copy of the passed matrix 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 by the passed translation value.
void	set(Vector3f v1, float scale) Sets the value of this matrix 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	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 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(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.
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 the value of this matrix to the matrix difference of itself and matrix m1 (this = this - m1).
void	sub(Matrix4f m1, Matrix4f m2) Sets the value of this matrix to the matrix difference of matrices m1 and m2.
java.lang.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 Matrix4f 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.
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

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()

Constructs and initializes a Matrix4f to all zeros.

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(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(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.

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(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(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

Method Detail

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.

add

public final void add(Matrix4f m1)

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

Parameters:

m1 - the other matrix

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

clone

public java.lang.Object clone()

Overrides:

clone in class java.lang.Object

determinant

public final float determinant()

Computes the determinant of this matrix.

Returns:

the determinant of the matrix

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

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(java.lang.Object o1)

Returns true if the Object o1 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 java.lang.Object

Parameters:

o1 - the object with which the comparison is made.

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

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 column 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 column values will be copied

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

getElements

public final java.util.List<java.lang.Float> getElements()

Puts all elements of the matrix in a list of size 16. The elements are listet in a row.

Returns:

list of elements

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

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

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

getScale

public final float getScale()

Performs an SVD normalization of this matrix to calculate and return the uniform scale factor. This matrix is not modified.

Returns:

the scale factor of this matrix

hashCode

public int hashCode()

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

Overrides:

hashCode in class java.lang.Object

Returns:

the integer hash value

invert

public final void invert()

Sets the value of this matrix to its inverse.

invert

public final void invert(Matrix4f m1)

Sets the value of this matrix to the matrix inverse of the passed matrix m1.

Parameters:

m1 - the matrix to be inverted

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

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

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

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

rotX

public final void rotX(float angle)

Sets the value of this matrix to a rotation matrix about the x axis by the passed angle.

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 rotation matrix about the y axis by the passed angle.

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 rotation matrix about the z axis by the passed angle.

Parameters:

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

set

public final void set(AxisAngle4d 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(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(float scale)

Sets the value of this matrix to a scale matrix with 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.).

set

public final void set(java.lang.Float[] m)

set

public final void set(float scale,
                      Vector3f v1)

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

Parameters:

scale - the scale factor for the matrix

v1 - the translation amount

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 (ie, affine matrix with no translational component).

Parameters:

m1 - the 3x3 matrix

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 s. 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(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 (ie, affine matrix with no translational component).

Parameters:

m1 - the 3x3 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 s. 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(Matrix4d m1)

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

Parameters:

m1 - the matrix to be copied

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

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(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)

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(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(Vector3f v1)

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

Parameters:

v1 - the translation amount

set

public final void set(Vector3f v1,
                      float scale)

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

Parameters:

v1 - the translation amount

scale - the scale factor for the matrix

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

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

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

setIdentity

public final void setIdentity()

Sets this Matrix4f to identity.

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)

setRotation

public final void setRotation(Matrix3d 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(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(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(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

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[] v)

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

Parameters:

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

v - the replacement row

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

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

setTranslation

public 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

setZero

public final void setZero()

Sets this matrix to all zeros.

sub

public final void sub(Matrix4f m1)

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

Parameters:

m1 - the other matrix

sub

public final void sub(Matrix4f m1,
                      Matrix4f m2)

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

Parameters:

m1 - the first matrix

m2 - the second matrix

toString

public java.lang.String toString()

Returns a string that contains the values of this Matrix4f.

Overrides:

toString in class java.lang.Object

Returns:

the String representation

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(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(Tuple4f vec)

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

Parameters:

vec - the single precision vector to be transformed

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(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.

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

transpose

public final void transpose()

Sets the value of this matrix to its transpose.

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