mikera.matrixx.impl

Class ZeroMatrix

java.lang.Object

mikera.transformz.ATransform

mikera.transformz.AAffineTransform

mikera.transformz.ALinearTransform

mikera.matrixx.AMatrix

mikera.matrixx.impl.ZeroMatrix

All Implemented Interfaces:

Cloneable, Iterable<AVector>, INDArray, IMatrix

public final class ZeroMatrix
extends AMatrix

Lightweight immutable zero matrix class

Method Summary

Methods

Modifier and Type	Method and Description
double	calculateElement(int i, AVector v) Calculates a single element of the output.
AMatrix	clone() Clones the transform, performing a deep copy where needed
int	columnCount() Returns the number of columns in the matrix
AMatrix	compose(AMatrix m)
AMatrix	compose(ATransform t) Composes this transformation with another transformation, returning a new combined transformation
void	composeWith(AMatrix t)
void	composeWith(ATransform t) Composes this transformation with a given transformation, mutating the transformation to represent the combined transform
static ZeroMatrix	create(int rows, int columns)
double	determinant() Calculates the determinant of the matrix.
void	entrywiseMul(AMatrix m) Multiplies this matrix in-place by another in an entrywise manner (Hadamard product).
boolean	equals(AMatrix m)
double	get(int row, int column) Returns a specified element in the matrix
ZeroMatrix	getTranspose() Returns a transposed version of this matrix.
int	hashCode()
int	inputDimensions() Returns the number of dimensions required for input vectors
boolean	isFullyMutable()
boolean	isInvertible() Returns true if this transform is invertible
boolean	isZeroMatrix() Returns true if the matrix is the zero matrix (all components zero)
int	outputDimensions() Returns the number of dimensions required for output vectors
int	rowCount() Returns the number of rows in the matrix
void	scale(double factor) Scales a matrix by a constant scalar factor.
void	set(int row, int column, double value) Sets a specified element in the matrix
void	transform(AVector input, AVector output) Transforms the source vector, storing the result in the given destination vector

Methods inherited from class mikera.matrixx.AMatrix

add, addMultiple, asVector, cloneRow, copyOfMatrix, copyOfTranslationVector, dimensionality, elementSum, epsilonEquals, equals, equals, get, getColumn, getLeadingDiagonal, getMatrixComponent, getRow, inverse, isIdentity, isSquare, iterator, mul, reshape, set, sub, swapColumns, swapRows, toAffineTransform, toMutableMatrix, toString, toVector, transformInPlace, transposeInPlace

Methods inherited from class mikera.transformz.ALinearTransform

getTranslationComponent, isLinear

Methods inherited from class mikera.transformz.AAffineTransform

compose, transformNormal

Methods inherited from class mikera.transformz.ATransform

takeComponents, takeComponents, takeComponents, transform

Methods inherited from class java.lang.Object

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

Method Detail

isFullyMutable

public boolean isFullyMutable()

Overrides:

isFullyMutable in class AMatrix

inputDimensions

public int inputDimensions()

Description copied from class: ATransform

Returns the number of dimensions required for input vectors

Overrides:

inputDimensions in class AMatrix

Returns:

scale

public void scale(double factor)

Description copied from class: AMatrix

Scales a matrix by a constant scalar factor.

Overrides:

scale in class AMatrix

outputDimensions

public int outputDimensions()

Description copied from class: ATransform

Returns the number of dimensions required for output vectors

Overrides:

outputDimensions in class AMatrix

Returns:

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

determinant

public double determinant()

Description copied from class: AMatrix

Calculates the determinant of the matrix.

Overrides:

determinant in class AMatrix

calculateElement

public double calculateElement(int i,
                      AVector v)

Description copied from class: ATransform

Calculates a single element of the output. Not necessarily faster than calculating full output, but can be in some circumstances.

Overrides:

calculateElement 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 IMatrix

Specified by:

get in class AMatrix

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 IMatrix

Specified by:

set in class AMatrix

clone

public AMatrix clone()

Description copied from class: ATransform

Clones the transform, performing a deep copy where needed

Overrides:

clone in class AMatrix

isZeroMatrix

public boolean isZeroMatrix()

Description copied from class: AMatrix

Returns true if the matrix is the zero matrix (all components zero)

Overrides:

isZeroMatrix in class AMatrix

hashCode

public int hashCode()

Overrides:

hashCode in class AMatrix

transform

public void transform(AVector input,
             AVector output)

Description copied from class: ATransform

Transforms the source vector, storing the result in the given destination vector

Overrides:

transform in class AMatrix

isInvertible

public boolean isInvertible()

Description copied from class: ATransform

Returns true if this transform is invertible

Overrides:

isInvertible in class AMatrix

compose

public AMatrix compose(ATransform t)

Description copied from class: ATransform

Composes this transformation with another transformation, returning a new combined transformation

Overrides:

compose in class AMatrix

compose

public AMatrix compose(AMatrix m)

Overrides:

compose in class AMatrix

composeWith

public void composeWith(ATransform t)

Description copied from class: ATransform

Composes this transformation with a given transformation, mutating the transformation to represent the combined transform

Overrides:

composeWith in class AMatrix

composeWith

public void composeWith(AMatrix t)

Overrides:

composeWith in class AMatrix

entrywiseMul

public void entrywiseMul(AMatrix m)

Description copied from class: AMatrix

Multiplies this matrix in-place by another in an entrywise manner (Hadamard product).

Overrides:

entrywiseMul in class AMatrix

equals

public boolean equals(AMatrix m)

Overrides:

equals in class AMatrix

getTranspose

public ZeroMatrix getTranspose()

Description copied from class: AMatrix

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

Overrides:

getTranspose in class AMatrix

Returns:

create

public static ZeroMatrix create(int rows,
                int columns)