Multiple Views - Interactive Web-Based Virtual Reality with Java 3D - page 241

• Create a VirtualUniverse object.

• Create a relevant Locale object and attach this to the VirtualUniverse.

• Construct content branches.

• Compile branch graphs and attach to Locale.

• Construct view branch and attach to Locale.

• Create a Canvas3D object.

• Create a TransformGroup TG.

• Create a ViewPlatform object VP and attach to the TransformGroup TG.

• Create a View object and attach to the ViewPlatform.

• Create a Canvas3D object and attach to the View.

• Create a PhysicalBody object and attach to the View.

Figure 3. Code segment for setting up simple universe

1. public SimpleUniverseApp () {

2. virtualUniverse = new VirtualUniverse(); Locale locale = new Locale(virtualUniverse);

3. VirtualWorld vWorld = new VirtualWorld(); BranchGroup scene = vWorld.createVirtualWorld();

4. scene.compile(); locale.addBranchGraph(scene);

5. BranchGroup view = createViewGraph(); enableInteraction(view); view.compile();

6. locale.addBranchGraph(view); }

7.

8. public BranchGroup createViewGraph() {

9. Canvas3D canvas3D = new Canvas3D(); String caption = "Example 1";

10. TransformGroup viewPlatform; viewManager = new ViewManager(this, 1, 1);

11. BranchGroup viewRoot = new BranchGroup();

12. TransformGroup transformGroup = new TransformGroup();

13. viewRoot.addChild(transformGroup);

14. GraphicsConfiguration config = viewManager.getPreferredGraphicsConfiguration();

15. canvas3D = new Canvas3D(config); viewManager.add(canvas3D, caption);

16. viewPlatform = createViewPlatform(canvas3D, 0);

17. transformGroup.addChild(viewPlatform);

18. return viewRoot; }

19.
20. public TransformGroup createViewPlatform(Canvas3D canvas3D, int mode) {
21. Transform3D transform3D = vpTransform3D(mode);

22. ViewPlatform viewPlatform = new ViewPlatform();

23. TransformGroup objTransform = new TransformGroup(transform3D);

24. objTransform.addChild(viewPlatform);

25. View view = new View();

26. view.attachViewPlatform(viewPlatform);

27. view.addCanvas3D(canvas3D);

28. view.setPhysicalBody(new PhysicalBody());

29. view.setPhysicalEnvironment(new PhysicalEnvironment());

30. return objTransform; }