Package com.mojang.math

Class MatrixUtil

java.lang.Object

com.mojang.math.MatrixUtil

public class MatrixUtil
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
private static final float	G
private static final GivensParameters	PI_4

Constructor Summary

Constructors

Modifier	Constructor	Description
private	MatrixUtil()

Method Summary

Modifier and Type	Method	Description
private static GivensParameters	approxGivensQuat(float topCorner, float oppositeDiagonalAverage, float bottomCorner)
static Quaternionf	eigenvalueJacobi(Matrix3f input, int iterations)
static boolean	isIdentity(Matrix4f matrix)
static boolean	isOrthonormal(Matrix4f matrix)
static boolean	isPureTranslation(Matrix4f matrix)
static Matrix4f	mulComponentWise(Matrix4f matrix, float scalar)
private static GivensParameters	qrGivensQuat(float input1, float input2)
private static void	similarityTransform(Matrix3f input, Matrix3f tempStorage)
private static void	stepJacobi(Matrix3f input, Matrix3f tempStorage, Quaternionf resultEigenvector, Quaternionf resultEigenvalue)
static org.apache.commons.lang3.tuple.Triple<Quaternionf,Vector3f,Quaternionf>	svdDecompose(Matrix3f matrix)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

G

private static final float G

PI_4

private static final GivensParameters PI_4

Constructor Details

MatrixUtil

private MatrixUtil()

Method Details

mulComponentWise

public static Matrix4f mulComponentWise(Matrix4f matrix,
 float scalar)

approxGivensQuat

private static GivensParameters approxGivensQuat(float topCorner,
 float oppositeDiagonalAverage,
 float bottomCorner)

qrGivensQuat

private static GivensParameters qrGivensQuat(float input1,
 float input2)

similarityTransform

private static void similarityTransform(Matrix3f input,
 Matrix3f tempStorage)

stepJacobi

private static void stepJacobi(Matrix3f input,
 Matrix3f tempStorage,
 Quaternionf resultEigenvector,
 Quaternionf resultEigenvalue)

eigenvalueJacobi

public static Quaternionf eigenvalueJacobi(Matrix3f input,
 int iterations)

svdDecompose

public static org.apache.commons.lang3.tuple.Triple<Quaternionf,Vector3f,Quaternionf> svdDecompose(Matrix3f matrix)

isIdentity

public static boolean isIdentity(Matrix4f matrix)

isPureTranslation

public static boolean isPureTranslation(Matrix4f matrix)

isOrthonormal

public static boolean isOrthonormal(Matrix4f matrix)