com.vwp.j3d.utils.universe
Class MultiUniverse

java.lang.Object
  javax.media.j3d.VirtualUniverse
      com.vwp.j3d.utils.universe.MultiUniverse

public class MultiUniverse
extends javax.media.j3d.VirtualUniverse

This class sets up a user environment to quickly and easily get a Java 3D program up and running with more than one View and Canvas3D. This class bases on the SimpleUniverse and creates all the necessary objects on the "view" side of the scene graph. Specifically, this class creates a locale, ViewingPlatforms and Viewer objects (all with their default values).

Constructor Summary

MultiUniverse(int numTransforms)
Creates a locale and prepares for the given number of transforms (and therefore View, ViewPlatform and Canvas3D objects).

Method Summary

void	addBranchGraph(javax.media.j3d.BranchGroup bg) Used to add Nodes to the geometry side (as opposed to the view side) of the scene graph.
void	cleanup() Cleanup memory use and reference by MultiUniverse.
javax.media.j3d.View	createView(javax.media.j3d.Canvas3D canvas) This method attaches the given Canvas3D object to the universe and creates the required ViewPlatform and View object for it.
com.sun.j3d.utils.universe.Viewer	getViewer(int num) Returns the Viewer object associated with this scene graph.
com.sun.j3d.utils.universe.ViewingPlatform	getViewingPlatform(int num) Returns the ViewingPlatform object associated with this scene graph and with the specified Canvas3D-number.

Methods inherited from class javax.media.j3d.VirtualUniverse

getAllLocales, getJ3DThreadPriority, getProperties, numLocales, removeAllLocales, removeLocale, setJ3DThreadPriority

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiUniverse

public MultiUniverse(int numTransforms)

Creates a locale and prepares for the given number of transforms (and therefore View, ViewPlatform and Canvas3D objects). This constructor does not create the necessary views, to do that, use method

Parameters:

numTransforms - The number of View-Transforms and Canvas3D objects which have to becontrolled by this object

See Also:

createView(Canvas3D canvas)

Method Detail

createView

public javax.media.j3d.View createView(javax.media.j3d.Canvas3D canvas)

This method attaches the given Canvas3D object to the universe and creates the required ViewPlatform and View object for it. This method has to be called as often as much numTransforms habe been specified for this methods constructor. The created Viewer- and View objects can be accessed using the appropriate get-methods. The required number is identically with the number of createView()-calls related to the view.

Parameters:

canvas - the Canvas3D object which has to be attached to the Universe

Returns:

the View object which was created for this Canvas3Ds view

getViewer

public com.sun.j3d.utils.universe.Viewer getViewer(int num)

Returns the Viewer object associated with this scene graph. MultiUniverse creates a Viewer object for every attached Canvas3D.

Parameters:

num - Specifies the number of the View which has to be returned. This number isequal to the number of createView()-calls which have been necessary to set up the View for the Canvas3D

Returns:

The Viewer object associated with this scene graph

getViewingPlatform

public com.sun.j3d.utils.universe.ViewingPlatform getViewingPlatform(int num)

Returns the ViewingPlatform object associated with this scene graph and with the specified Canvas3D-number.

Parameters:

num - specifies the number of the View which has to be returned. This number isequal to the number of createView()-calls which have been necessary to set up the View for the Canvas3D

Returns:

The ViewingPlatform object of this scene graph.

addBranchGraph

public void addBranchGraph(javax.media.j3d.BranchGroup bg)

Used to add Nodes to the geometry side (as opposed to the view side) of the scene graph. This is a short cut to getting the Locale object and calling that object's addBranchGraph() method.

Parameters:

bg - the BranchGroup to attach to this Universe's Locale.

cleanup

public void cleanup()

Cleanup memory use and reference by MultiUniverse. Typically it should be invoked by the applet's destroy method.