mikera.matrixx.impl

Class DiagonalMatrix

java.lang.Object

mikera.transformz.ATransform

mikera.transformz.AAffineTransform

mikera.transformz.ALinearTransform

mikera.matrixx.AMatrix

mikera.matrixx.impl.ADiagonalMatrix

mikera.matrixx.impl.DiagonalMatrix

All Implemented Interfaces:

Cloneable, Iterable<AVector>, INDArray, IMatrix

public final class DiagonalMatrix
extends ADiagonalMatrix

Specialised diagonal matrix class Not fully mutable - only the diagonal values can be changed

Author:

Mike

Field Summary

Fields inherited from class mikera.matrixx.impl.ADiagonalMatrix

dimensions

Constructor Summary

Constructors

Constructor and Description
DiagonalMatrix(int dimensions)

Method Summary

Methods

Modifier and Type	Method and Description
double	calculateElement(int i, AVector v) Calculates a single element of the output.
DiagonalMatrix	clone() Clones the transform, performing a deep copy where needed
AMatrix	compose(ADiagonalMatrix a)
AMatrix	compose(AMatrix a)
static DiagonalMatrix	create(double... values)
double	determinant() Calculates the determinant of the matrix.
double	get(int row, int column) Returns a specified element in the matrix
double	getDiagonalValue(int i)
AVector	getLeadingDiagonal() Returns a new vector that contains the leading diagonal values of the matrix
DiagonalMatrix	inverse() Return the inverse of this transformation if possible
boolean	isIdentity() Returns true if this transform is the identity function, i.e.
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	transformInPlace(AVector v) Transforms a vector destructively.
static DiagonalMatrix	wrap(double[] data)

Methods inherited from class mikera.matrixx.impl.ADiagonalMatrix

columnCount, dimensions, isFullyMutable, isSquare, rowCount, transposeInPlace

Methods inherited from class mikera.matrixx.AMatrix

add, addMultiple, asVector, cloneRow, compose, composeWith, composeWith, copyOfMatrix, copyOfTranslationVector, dimensionality, elementSum, entrywiseMul, epsilonEquals, equals, equals, equals, get, getColumn, getMatrixComponent, getRow, getTranspose, hashCode, inputDimensions, isInvertible, isZeroMatrix, iterator, mul, outputDimensions, reshape, set, sub, swapColumns, swapRows, toAffineTransform, toMutableMatrix, toString, toVector, transform

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

Constructor Detail

DiagonalMatrix

public DiagonalMatrix(int dimensions)

Method Detail

create

public static DiagonalMatrix create(double... values)

wrap

public static DiagonalMatrix wrap(double[] data)

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

Overrides:

set in class ADiagonalMatrix

scale

public void scale(double factor)

Description copied from class: AMatrix

Scales a matrix by a constant scalar factor.

Overrides:

scale 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 ADiagonalMatrix

transformInPlace

public void transformInPlace(AVector v)

Description copied from class: ATransform

Transforms a vector destructively. Intended for fast non-allocating transforms

Overrides:

transformInPlace in class ADiagonalMatrix

isIdentity

public boolean isIdentity()

Description copied from class: ATransform

Returns true if this transform is the identity function, i.e. it maps all vectors to themselves

Overrides:

isIdentity in class ADiagonalMatrix

clone

public DiagonalMatrix clone()

Description copied from class: ATransform

Clones the transform, performing a deep copy where needed

Overrides:

clone in class AMatrix

determinant

public double determinant()

Description copied from class: AMatrix

Calculates the determinant of the matrix.

Overrides:

determinant in class ADiagonalMatrix

inverse

public DiagonalMatrix inverse()

Description copied from class: ATransform

Return the inverse of this transformation if possible

Overrides:

inverse in class AMatrix

Returns:

getDiagonalValue

public double getDiagonalValue(int i)

Overrides:

getDiagonalValue in class ADiagonalMatrix

getLeadingDiagonal

public AVector getLeadingDiagonal()

Description copied from class: AMatrix

Returns a new vector that contains the leading diagonal values of the matrix

Overrides:

getLeadingDiagonal in class AMatrix

Returns:

compose

public AMatrix compose(AMatrix a)

Overrides:

compose in class AMatrix

compose

public AMatrix compose(ADiagonalMatrix a)