mikera.matrixx.impl

Class DiagonalMatrix

java.lang.Object

mikera.transformz.ATransform

mikera.transformz.ALinearTransform

mikera.transformz.AAffineTransform

mikera.matrixx.AMatrix

mikera.matrixx.impl.DiagonalMatrix

All Implemented Interfaces:

Cloneable, IMatrix

public final class DiagonalMatrix
extends AMatrix

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

Author:

Mike

Constructor Summary

Constructors

Constructor and Description
DiagonalMatrix(double... values)
DiagonalMatrix(int dimensions)

Method Summary

Methods

Modifier and Type	Method and Description
double	calculateComponent(int i, AVector v) Calculates a single component of the output.
DiagonalMatrix	clone() Clones the transform, performing a deep copy where needed
int	columnCount() Returns the number of columns in the matrix
double	determinant() Calculates the determinant of the matrix.
double	get(int row, int column) Returns a specified element in the matrix
AVector	getLeadingDiagonal() Returns a new vector that contains the leading diagonal values of the matrix
boolean	isFullyMutable()
boolean	isIdentity() Returns true if this transform is the identity function, i.e.
boolean	isSquare()
int	rowCount() Returns the number of rows in the matrix
void	set(int row, int column, double value) Sets a specified element in the matrix
void	transformInPlace(AVector v) Transforms a vector destructively.
void	transposeInPlace()

Methods inherited from class mikera.matrixx.AMatrix

add, addMultiple, asVector, cloneRow, compose, compose, composeWith, composeWith, copyOfMatrix, copyOfTranslationVector, entrywiseMul, epsilonEquals, equals, equals, equals, getColumn, getMatrixComponent, getRow, getTranslationComponent, getTranspose, hashCode, inputDimensions, inverse, isZeroMatrix, mul, outputDimensions, set, swapColumns, swapRows, toAffineTransform, toMutableMatrix, toString, toVector, transform

Methods inherited from class mikera.transformz.AAffineTransform

compose

Methods inherited from class mikera.transformz.ALinearTransform

isLinear

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)

DiagonalMatrix

public DiagonalMatrix(double... values)

Method Detail

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

isSquare

public boolean isSquare()

Overrides:

isSquare 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

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

calculateComponent

public double calculateComponent(int i,
                        AVector v)

Description copied from class: ATransform

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

Overrides:

calculateComponent in class AMatrix

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 AMatrix

isFullyMutable

public boolean isFullyMutable()

Overrides:

isFullyMutable in class AMatrix

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 AMatrix

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 AMatrix

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:

transposeInPlace

public void transposeInPlace()

Overrides:

transposeInPlace in class AMatrix