org.opensourcephysics.displayejs.utils
Class TransformationComposition

java.lang.Object
  org.opensourcephysics.displayejs.utils.TransformationComposition

All Implemented Interfaces:

java.lang.Cloneable, Transformation

public class TransformationComposition
extends java.lang.Object
implements Transformation

Title: TransformationComposition

Description: A composition of two transformations.

Copyright: Copyright (c) Esquembre Jan 2004

Company: Universidad de Murcia

Version:

1.0

Author:

Francisco Esquembre (fem@um.es)

Constructor Summary

TransformationComposition(Transformation first, Transformation second)
Creates a transformation made of two other transformations

Method Summary

java.lang.Object	clone() Provides a copy of this transformation.
double[]	direct(double[] input) Transforms a given point
double[]	inverse(double[] input) The inverse transformation (if it exists).

Methods inherited from class java.lang.Object

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

Constructor Detail

TransformationComposition

public TransformationComposition(Transformation first,
                                 Transformation second)

Creates a transformation made of two other transformations

Parameters:

first - The first transformation

second - The second transformation

Method Detail

clone

public java.lang.Object clone()

Description copied from interface: Transformation

Provides a copy of this transformation. This is used by an OSP 3D Element that will explicitely get a clone of it whenever its setTransformation() method is invoked. Thus, changing the original transformation directly has no effect unless a new setTransformation is invoked.

Specified by:

clone in interface Transformation

Overrides:

clone in class java.lang.Object

direct

public double[] direct(double[] input)

Description copied from interface: Transformation

Transforms a given point

Specified by:

direct in interface Transformation

Parameters:

input - double[] the coordinates to be transformed (the array's contents will be changed accordingly)

Returns:

double[] the transformed vector (i.e. point)

inverse

public double[] inverse(double[] input)

Description copied from interface: Transformation

The inverse transformation (if it exists). If the transformation is not invertible, then a call to this method must throw a UnsupportedOperationException exception.

Specified by:

inverse in interface Transformation

Parameters:

input - double[] the coordinates to be transformed (the array's contents will be changed accordingly)

Returns:

double[] the transformed vector (i.e. point)