javafx.scene.transform

Class Rotate.MatrixCache

java.lang.Object

javafx.scene.transform.Rotate.MatrixCache

Enclosing class:

Rotate

private static class Rotate.MatrixCache
extends java.lang.Object

Matrix cache. Computing single transformation matrix elements for a general rotation is quite expensive. Also each of those partial computations need some common operations to be made (compute sin and cos, normalize axis). Therefore with the direct element computations if all the getters for the elements are called to get the matrix, the result is slow. If a matrix element is asked for, we can reasonably anticipate that some other elements will be asked for as well. So when any element needs to be computed, we compute the entire matrix, cache it, and use the stored values until the transform changes.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) boolean	is3D
(package private) double	mxx
(package private) double	mxy
(package private) double	mxz
(package private) double	myx
(package private) double	myy
(package private) double	myz
(package private) double	mzx
(package private) double	mzy
(package private) double	mzz
(package private) double	tx
(package private) double	ty
(package private) double	tz
(package private) boolean	valid

Constructor Summary

Constructors

Constructor and Description
MatrixCache()

Method Summary

Modifier and Type	Method and Description
void	invalidate()
void	update(double angle, Point3D axis, double px, double py, double pz)

Methods inherited from class java.lang.Object

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

Field Detail

valid

boolean valid

is3D

boolean is3D

mxx

double mxx

mxy

double mxy

mxz

double mxz

tx

double tx

myx

double myx

myy

double myy

myz

double myz

ty

double ty

mzx

double mzx

mzy

double mzy

mzz

double mzz

tz

double tz

Constructor Detail

MatrixCache

public MatrixCache()

Method Detail

update

public void update(double angle,
                   Point3D axis,
                   double px,
                   double py,
                   double pz)

invalidate

public void invalidate()