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.

Constructor Summary

Constructors

Constructor and Description
Rotate.MatrixCache()

Method Summary

Methods

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

Constructor Detail

Rotate.MatrixCache

public Rotate.MatrixCache()

Method Detail

update

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

invalidate

public void invalidate()