javax.vecmath
Class Matrix3f

java.lang.Object
  |
  +--javax.vecmath.Matrix3f

All Implemented Interfaces:

java.io.Serializable

public class Matrix3f

extends java.lang.Object

implements java.io.Serializable

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

See Also:

Serialized Form

Field Summary

float	m00 The first matrix element in the first row.
float	m01 The second matrix element in the first row.
float	m02 The third matrix element in the first row.
float	m10 The first matrix element in the second row.
float	m11 The second matrix element in the second row.
float	m12 The third matrix element in the second row.
float	m20 The first matrix element in the third row.
float	m21 The second matrix element in the third row.
float	m22 The third matrix element in the third row.

Constructor Summary

Matrix3f()
Constructs and initializes a Matrix3f to all zeros.

Matrix3f(float[] v)
Constructs and initializes a Matrix3f from the specified nine-element array.

Matrix3f(float m00, float m01, float m02, float m10, float m11, float m12, float m20, float m21, float m22)
Constructs and initializes a Matrix3f from the specified nine values.

Matrix3f(Matrix3d m1)
Constructs a new matrix with the same values as the Matrix3d parameter.

Matrix3f(Matrix3f m1)
Constructs a new matrix with the same values as the Matrix3f parameter.

Method Summary

void	add(float scalar) Adds a scalar to each component of this matrix.
void	add(float scalar, Matrix3f m1) Adds a scalar to each component of the matrix m1 and places the result into this.
void	add(Matrix3f m1) Sets the value of this matrix to the matrix sum of itself and matrix m1.
void	add(Matrix3f m1, Matrix3f m2) Sets the value of this matrix to the matrix sum of matrices m1 and m2.
float	determinant() Computes the determinant of this matrix.
boolean	epsilonEquals(Matrix3f 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(Matrix3f m1) Returns true if all of the data members of Matrix3f m1 are equal to the corresponding data members in this Matrix3f.
boolean	equals(java.lang.Object o1) Returns true if the Object o1 is of type Matrix3f and all of the data members of o1 are equal to the corresponding data members in this Matrix3f.
void	getColumn(int column, float[] v) Copies the matrix values in the specified column into the array parameter.
void	getColumn(int column, Vector3f 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.
void	getRow(int row, float[] v) Copies the matrix values in the specified row into the array parameter.
void	getRow(int row, Vector3f 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(Matrix3f 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, Matrix3f m1) Multiplies each element of matrix m1 by a scalar and places the result into this.
void	mul(Matrix3f m1) Sets the value of this matrix to the result of multiplying itself with matrix m1.
void	mul(Matrix3f m1, Matrix3f m2) Sets the value of this matrix to the result of multiplying the two argument matrices together.
void	mulNormalize(Matrix3f m1) Multiplies this matrix by matrix m1, does an SVD normalization of the result, and places the result back into this matrix.
void	mulNormalize(Matrix3f m1, Matrix3f m2) Multiplies matrix m1 by matrix m2, does an SVD normalization of the result, and places the result into this matrix.
void	mulTransposeBoth(Matrix3f m1, Matrix3f m2) Multiplies the transpose of matrix m1 times the transpose of matrix m2, and places the result into this.
void	mulTransposeLeft(Matrix3f m1, Matrix3f m2) Multiplies the transpose of matrix m1 times matrix m2, and places the result into this.
void	mulTransposeRight(Matrix3f m1, Matrix3f 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(Matrix3f m1) Sets the value of this matrix equal to the negation of of the Matrix3f parameter.
void	normalize() Performs singular value decomposition normalization of this matrix.
void	normalize(Matrix3f m1) Perform singular value decomposition normalization of matrix m1 and place the normalized values into this.
void	normalizeCP() Perform cross product normalization of this matrix.
void	normalizeCP(Matrix3f m1) Perform cross product normalization of matrix m1 and place the normalized values into this.
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 passed scale amount.
void	set(float[] m) Sets the values in this Matrix3f equal to the row-major array parameter (ie, the first three elements of the array will be copied into the first row of this matrix, etc.).
void	set(Matrix3d m1) Sets the value of this matrix to the float value of the Matrix3d argument.
void	set(Matrix3f m1) Sets the value of this matrix to the value of the Matrix3f argument.
void	set(Quat4d q1) Sets the value of this matrix to the matrix conversion of the (single precision) quaternion argument.
void	set(Quat4f q1) Sets the value of this matrix to the matrix conversion of the (single precision) quaternion argument.
void	setColumn(int column, float[] v) Sets the specified column of this matrix3f to the three values provided.
void	setColumn(int column, float x, float y, float z) Sets the specified column of this matrix3f to the three values provided.
void	setColumn(int column, Vector3f v) Sets the specified column of this matrix3f to the vector provided.
void	setElement(int row, int column, float value) Sets the specified element of this matrix3f to the value provided.
void	setIdentity() Sets this Matrix3f to identity.
void	setRow(int row, float[] v) Sets the specified row of this matrix3f to the three values provided.
void	setRow(int row, float x, float y, float z) Sets the specified row of this matrix3f to the three values provided.
void	setRow(int row, Vector3f v) Sets the specified row of this matrix3f 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) and multiplying by the new scale.
void	setZero() Sets this matrix to all zeros.
void	sub(Matrix3f m1) Sets the value of this matrix to the matrix difference of itself and matrix m1 (this = this - m1).
void	sub(Matrix3f m1, Matrix3f 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 Matrix3f.
void	transform(Tuple3f t) Multiply this matrix by the tuple t and place the result back into the tuple (t = this*t).
void	transform(Tuple3f t, Tuple3f result) Multiply this matrix by the tuple t and and place the result into the tuple "result" (result = this*t).
void	transpose() Sets the value of this matrix to its transpose.
void	transpose(Matrix3f m1) Sets the value of this matrix to the transpose of the argument matrix.

Methods inherited from class java.lang.Object

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

Field Detail

m00

public float m00

The first matrix element in the first row.

m01

public float m01

The second matrix element in the first row.

m02

public float m02

The third matrix element in the first row.

m10

public float m10

The first matrix element in the second row.

m11

public float m11

The second matrix element in the second row.

m12

public float m12

The third matrix element in the second row.

m20

public float m20

The first matrix element in the third row.

m21

public float m21

The second matrix element in the third row.

m22

public float m22

The third matrix element in the third row.

Constructor Detail

Matrix3f

public Matrix3f(float m00,
                float m01,
                float m02,
                float m10,
                float m11,
                float m12,
                float m20,
                float m21,
                float m22)

Constructs and initializes a Matrix3f from the specified nine values.

Parameters:

m00 - the [0][0] element

m01 - the [0][1] element

m02 - the [0][2] element

m10 - the [1][0] element

m11 - the [1][1] element

m12 - the [1][2] element

m20 - the [2][0] element

m21 - the [2][1] element

m22 - the [2][2] element

Matrix3f

public Matrix3f(float[] v)

Constructs and initializes a Matrix3f from the specified nine-element array. this.m00 =v[0], this.m01=v[1], etc.

Parameters:

v - the array of length 9 containing in order

Matrix3f

public Matrix3f(Matrix3d m1)

Constructs a new matrix with the same values as the Matrix3d parameter.

Parameters:

m1 - the source matrix

Matrix3f

public Matrix3f(Matrix3f m1)

Constructs a new matrix with the same values as the Matrix3f parameter.

Parameters:

m1 - the source matrix

Matrix3f

public Matrix3f()

Constructs and initializes a Matrix3f to all zeros.

Method Detail

toString

public java.lang.String toString()

Returns a string that contains the values of this Matrix3f.

Overrides:

toString in class java.lang.Object

Returns:

the String representation

setIdentity

public final void setIdentity()

Sets this Matrix3f to identity.

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) and multiplying by the new scale.

Parameters:

scale - the new scale amount

setElement

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

Sets the specified element of this matrix3f 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

getRow

public final void getRow(int row,
                         Vector3f 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,
                            Vector3f v)

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

Parameters:

row - the matrix row

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:

row - the matrix row

v - the array into which the matrix row 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)

m - the matrix

Returns:

the value at the indexed element.

setRow

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

Sets the specified row of this matrix3f to the three 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

setRow

public final void setRow(int row,
                         Vector3f v)

Sets the specified row of this matrix3f 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 matrix3f to the three values provided.

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)

Sets the specified column of this matrix3f to the three 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

setColumn

public final void setColumn(int column,
                            Vector3f v)

Sets the specified column of this matrix3f 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 matrix3f to the three values provided.

Parameters:

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

v - the replacement column

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

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,
                      Matrix3f 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(Matrix3f m1,
                      Matrix3f 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(Matrix3f m1)

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

Parameters:

m1 - the other matrix

sub

public final void sub(Matrix3f m1,
                      Matrix3f 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

sub

public final void sub(Matrix3f m1)

Sets the value of 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.

transpose

public final void transpose(Matrix3f 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(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)

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(float[] m)

Sets the values in this Matrix3f equal to the row-major array parameter (ie, the first three elements of the array will be copied into the first row of this matrix, etc.).

Parameters:

m - the single precision array of length 9

set

public final void set(Matrix3f m1)

Sets the value of this matrix to the value of the Matrix3f argument.

Parameters:

m1 - the source matrix3f

set

public final void set(Matrix3d m1)

Sets the value of this matrix to the float value of the Matrix3d argument.

Parameters:

m1 - the source matrix3d

invert

public final void invert(Matrix3f m1)

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

Returns:

the determinant of this matrix

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

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,
                      Matrix3f 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(Matrix3f 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(Matrix3f m1,
                      Matrix3f 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

mulNormalize

public final void mulNormalize(Matrix3f m1)

Multiplies this matrix by matrix m1, does an SVD normalization of the result, and places the result back into this matrix. this = SVDnorm(this*m1).

Parameters:

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

mulNormalize

public final void mulNormalize(Matrix3f m1,
                               Matrix3f m2)

Multiplies matrix m1 by matrix m2, does an SVD normalization of the result, and places the result into this matrix. this = SVDnorm(m1*m2).

Parameters:

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

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

mulTransposeBoth

public final void mulTransposeBoth(Matrix3f m1,
                                   Matrix3f 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(Matrix3f m1,
                                    Matrix3f 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(Matrix3f m1,
                                   Matrix3f 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

normalize

public final void normalize()

Performs singular value decomposition normalization of this matrix.

normalize

public final void normalize(Matrix3f m1)

Perform singular value decomposition normalization of matrix m1 and place the normalized values into this.

Parameters:

m1 - the matrix values to be normalized

normalizeCP

public final void normalizeCP()

Perform cross product normalization of this matrix.

normalizeCP

public final void normalizeCP(Matrix3f m1)

Perform cross product normalization of matrix m1 and place the normalized values into this.

Parameters:

m1 - Provides the matrix values to be normalized

equals

public boolean equals(Matrix3f m1)

Returns true if all of the data members of Matrix3f m1 are equal to the corresponding data members in this Matrix3f.

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 Matrix3f and all of the data members of o1 are equal to the corresponding data members in this Matrix3f.

Overrides:

equals in class java.lang.Object

Parameters:

o1 - the object with which the comparison is made

Returns:

true or false

epsilonEquals

public boolean epsilonEquals(Matrix3f 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 ; j=0,1,2 ; 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 Matrix3f objects with identical data values (i.e., Matrix3f.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 java.lang.Object

Returns:

the integer hash code value

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(Matrix3f m1)

Sets the value of this matrix equal to the negation of of the Matrix3f parameter.

Parameters:

m1 - the source matrix

transform

public final void transform(Tuple3f t)

Multiply this matrix by the tuple t and place the result back into the tuple (t = this*t).

Parameters:

t - the tuple to be multiplied by this matrix and then replaced

transform

public final void transform(Tuple3f t,
                            Tuple3f result)

Multiply this matrix by the tuple t and and place the result into the tuple "result" (result = this*t).

Parameters:

t - the tuple to be multiplied by this matrix

result - the tuple into which the product is placed