mikera.matrixx

Class Matrix22

java.lang.Object

mikera.arrayz.impl.AbstractArray<AVector>

mikera.matrixx.AMatrix

mikera.matrixx.impl.APrimitiveMatrix

mikera.matrixx.Matrix22

All Implemented Interfaces:

Serializable, Cloneable, Iterable<AVector>, INDArray, IMatrix, ISpecialisedTransform

public final class Matrix22
extends APrimitiveMatrix
implements ISpecialisedTransform

Specialised 2*2 Matrix for Vector2 maths, using primitive matrix elements

Author:

Mike

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
double	m00
double	m01
double	m10
double	m11

Constructor Summary

Constructors

Constructor and Description
Matrix22()
Matrix22(AMatrix m)
Matrix22(double m00, double m01, double m10, double m11)
Matrix22(Matrix22 source)

Method Summary

Methods

Modifier and Type	Method and Description
void	add(AMatrix a) Adds another matrix to this matrix.
void	add(Matrix22 a)
Matrix22	clone() Returns a clone of the array, as a new array which will be fully mutable and may be of a different class to the original.
Vector2	cloneRow(int row) Creates a mutable vector that is the clone of a single row of this matrix
int	columnCount() Returns the number of columns in the matrix
void	copyRowTo(int row, double[] dest, int destOffset)
static Matrix22	create(double a, double b, double c, double d)
static Matrix22	createIdentity() Creates a new mutable 2D identity matrix
static Matrix22	createReflectionMatrix(AVector normal)
static Matrix22	createReflectionMatrix(Vector2 normal)
static Matrix22	createRotationMatrix(double angle)
static Matrix22	createScaleMatrix(double d)
double	determinant() Calculates the determinant of the matrix.
long	elementCount() Returns the total number of elements in this array.
double	elementMax() Returns the maximum element value in this array.
double	elementMin() Returns the maximum element value in this array.
double	elementSum() Returns the sum of all elements in the matrix
boolean	equals(Matrix22 m)
boolean	equals(Object o)
Matrix22	exactClone() Returns an exact deep clone of an array (i.e.
double	get(int row, int column) Returns a specified element in the matrix
void	getElements(double[] data, int offset) Gets all elements of the array, copying them into a double array
Matrix22	getTranspose() Returns a transposed version of this matrix.
AMatrix	innerProduct(AMatrix a)
AVector	innerProduct(AVector a)
Matrix22	innerProduct(Matrix22 a)
Vector2	innerProduct(Vector2 a)
Matrix22	inverse()
boolean	isSymmetric() Returns true if a matrix is symmetric
void	multiply(double factor) Multiplies all elements of the array by a given double value
int	rowCount() Returns the number of rows in the matrix
void	set(AMatrix m)
void	set(int row, int column, double value) Sets a specified element in the matrix
void	set(Matrix22 a)
void	sub(Matrix22 a)
Vector	toVector() Converts the matrix to a single flattened vector in row major order.
double	trace()
void	transform(AVector source, AVector dest)
Vector2	transform(Vector2 source)
void	transform(Vector2 source, AVector dest)
void	transform(Vector2 source, Vector2 dest)
void	transformInPlace(Vector2 dest)

Methods inherited from class mikera.matrixx.impl.APrimitiveMatrix

isFullyMutable, isSquare

Methods inherited from class mikera.matrixx.AMatrix

abs, add, add, add, add, addAt, addMultiple, addRowMultiple, applyOp, applyOp, asDoubleArray, asElementList, asVector, bandIndex, bandLength, bandLength, bandPosition, broadcast, broadcastCloneLike, broadcastLike, broadcastLike, calculateElement, calculateElement, clamp, cloneColumn, compose, composeWith, copyColumnTo, copyTo, dimensionality, divide, divide, elementDiv, elementIterator, elementMul, elementSquaredSum, ensureMutable, epsilonEquals, epsilonEquals, epsilonEquals, equals, equals, equals, equalsTranspose, exp, fill, get, get, get, getBand, getBandWrapped, getColumn, getLeadingDiagonal, getLongShape, getRow, getShape, getShape, getShapeClone, getSlices, getSlices, getSliceViews, getTransposeCopy, getTransposeView, hashCode, hasOrthonormalColumns, hasOrthonormalRows, immutable, innerProduct, innerProduct, innerProduct, innerProduct, inputDimensions, isBoolean, isDiagonal, isElementConstrained, isHermitian, isIdentity, isInvertible, isLowerTriangular, isMutable, isOrthogonal, isPositiveDefinite, isRectangularDiagonal, isSameShape, isSameShape, isUpperTriangular, isView, isZero, iterator, join, log, lowerBandwidth, lowerBandwidthLimit, mul, multiply, multiplyRow, mutable, negate, nonZeroCount, outerProduct, outputDimensions, pow, reciprocal, replaceColumn, replaceRow, reshape, reshape, rotateView, scaleAdd, set, set, set, set, set, setColumn, setElements, setElements, setRow, signum, slice, slice, sliceCount, sqrt, square, sub, sub, sub, sub, sub, subArray, subMatrix, swapColumns, swapRows, toAffineTransform, toArray, toDoubleArray, toDoubleBuffer, toMatrix, toMatrixTranspose, toMutableMatrix, toString, transform, transform, transform, transformInPlace, transformInPlace, transposeInnerProduct, transposeInnerProduct, transposeInPlace, unsafeGet, unsafeSet, upperBandwidth, upperBandwidthLimit, validate

Methods inherited from class mikera.arrayz.impl.AbstractArray

density, scale, sparse

Methods inherited from class java.lang.Object

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

Methods inherited from interface mikera.arrayz.INDArray

scale, sparse

Field Detail

m00

public double m00

m01

public double m01

m10

public double m10

m11

public double m11

Constructor Detail

Matrix22

public Matrix22()

Matrix22

public Matrix22(Matrix22 source)

Matrix22

public Matrix22(double m00,
        double m01,
        double m10,
        double m11)

Matrix22

public Matrix22(AMatrix m)

Method Detail

set

public void set(Matrix22 a)

set

public void set(AMatrix m)

Overrides:

set in class AMatrix

create

public static Matrix22 create(double a,
              double b,
              double c,
              double d)

createRotationMatrix

public static Matrix22 createRotationMatrix(double angle)

createScaleMatrix

public static Matrix22 createScaleMatrix(double d)

createIdentity

public static Matrix22 createIdentity()

Creates a new mutable 2D identity matrix

Returns:

createReflectionMatrix

public static Matrix22 createReflectionMatrix(AVector normal)

createReflectionMatrix

public static Matrix22 createReflectionMatrix(Vector2 normal)

multiply

public void multiply(double factor)

Description copied from interface: INDArray

Multiplies all elements of the array by a given double value

Specified by:

multiply in interface INDArray

Overrides:

multiply in class AMatrix

determinant

public double determinant()

Description copied from class: AMatrix

Calculates the determinant of the matrix.

Overrides:

determinant in class AMatrix

elementCount

public long elementCount()

Description copied from interface: INDArray

Returns the total number of elements in this array. Equivalent to the product all dimension sizes.

Specified by:

elementCount in interface INDArray

Overrides:

elementCount in class AMatrix

Returns:

elementSum

public double elementSum()

Description copied from class: AMatrix

Returns the sum of all elements in the matrix

Specified by:

elementSum in interface INDArray

Overrides:

elementSum in class AMatrix

Returns:

elementMin

public double elementMin()

Description copied from interface: INDArray

Returns the maximum element value in this array.

Specified by:

elementMin in interface INDArray

Overrides:

elementMin in class AbstractArray<AVector>

Returns:

elementMax

public double elementMax()

Description copied from interface: INDArray

Returns the maximum element value in this array.

Specified by:

elementMax in interface INDArray

Overrides:

elementMax in class AbstractArray<AVector>

Returns:

trace

public double trace()

Overrides:

trace in class AMatrix

inverse

public Matrix22 inverse()

Specified by:

inverse in interface IMatrix

Overrides:

inverse in class AMatrix

rowCount

public int rowCount()

Description copied from class: AMatrix

Returns the number of rows in the matrix

Specified by:

rowCount in interface IMatrix

Specified by:

rowCount in class AMatrix

columnCount

public int columnCount()

Description copied from class: AMatrix

Returns the number of columns in the matrix

Specified by:

columnCount in interface IMatrix

Specified by:

columnCount in class AMatrix

add

public void add(AMatrix a)

Description copied from class: AMatrix

Adds another matrix to this matrix. Matrices must be the same size.

Overrides:

add in class AMatrix

add

public void add(Matrix22 a)

sub

public void sub(Matrix22 a)

cloneRow

public Vector2 cloneRow(int row)

Description copied from class: AMatrix

Creates a mutable vector that is the clone of a single row of this matrix

Overrides:

cloneRow in class AMatrix

Returns:

copyRowTo

public void copyRowTo(int row,
             double[] dest,
             int destOffset)

Overrides:

copyRowTo in class AMatrix

get

public double get(int row,
         int column)

Description copied from class: AMatrix

Returns a specified element in the matrix

Specified by:

get in interface INDArray

Specified by:

get in interface IMatrix

Specified by:

get in class AMatrix

Returns:

set

public void set(int row,
       int column,
       double value)

Description copied from class: AMatrix

Sets a specified element in the matrix

Specified by:

set in interface INDArray

Specified by:

set in interface IMatrix

Specified by:

set in class AMatrix

innerProduct

public AMatrix innerProduct(AMatrix a)

Overrides:

innerProduct in class AMatrix

innerProduct

public AVector innerProduct(AVector a)

Overrides:

innerProduct in class AMatrix

innerProduct

public Vector2 innerProduct(Vector2 a)

innerProduct

public Matrix22 innerProduct(Matrix22 a)

transform

public void transform(AVector source,
             AVector dest)

Specified by:

transform in interface IMatrix

Overrides:

transform in class AMatrix

transform

public void transform(Vector2 source,
             AVector dest)

transform

public void transform(Vector2 source,
             Vector2 dest)

transform

public Vector2 transform(Vector2 source)

transformInPlace

public void transformInPlace(Vector2 dest)

isSymmetric

public boolean isSymmetric()

Description copied from class: AMatrix

Returns true if a matrix is symmetric

Overrides:

isSymmetric in class AMatrix

toVector

public Vector toVector()

Description copied from class: AMatrix

Converts the matrix to a single flattened vector in row major order.

Specified by:

toVector in interface INDArray

Overrides:

toVector in class AMatrix

Returns:

getTranspose

public Matrix22 getTranspose()

Description copied from class: AMatrix

Returns a transposed version of this matrix. May or may not be a view.

Specified by:

getTranspose in interface INDArray

Overrides:

getTranspose in class AMatrix

Returns:

getElements

public void getElements(double[] data,
               int offset)

Description copied from interface: INDArray

Gets all elements of the array, copying them into a double array

Specified by:

getElements in interface INDArray

Overrides:

getElements in class AMatrix

equals

public boolean equals(Object o)

Overrides:

equals in class AMatrix

equals

public boolean equals(Matrix22 m)

clone

public Matrix22 clone()

Description copied from interface: INDArray

Returns a clone of the array, as a new array which will be fully mutable and may be of a different class to the original. Clone should attempt to return the most efficient possible array type.

Specified by:

clone in interface INDArray

Overrides:

clone in class AMatrix

Returns:

exactClone

public Matrix22 exactClone()

Description copied from interface: INDArray

Returns an exact deep clone of an array (i.e. of the same class as the original).

Specified by:

exactClone in interface INDArray

Specified by:

exactClone in class AMatrix

Returns: