VRML Scene graphs can be traversed, and the Node data can be read ... this allows programs to animate VRML programs in very flexible ways ... scene information can be copied into class objects making the data retrieval faster & easier ... This can be done with: VRML EAI, Script Nodes, Java (1.1) Web Applets, & Java3D. > Is there any ... way to access a node in the VRML scene > [other] than using the getNode() ? > > Is it possible to get a Java list structure with all the nodes > that have the same DEF name and then traverse them one by one ? > > Best Regards Jan-Olof Janson, Web3D & VR developer ... > http://www.dynagraph.se Do use getNode( ) to get the Node and fields in the node ... Why not use it ? If you have to get the information repeatedly you can copy the information out, and then refer to the copy ... In Web3d' H-Anim standard the DEF names are used to uniquely identify the Joints so all the DEF names are different ... Collaboration, cooperation, combining of skills, and resources between VRML artist & animators is accomplished in Web3D's H-Anim Human Animation Standards Group by using DEF nodes in the VRML to identify the Joints and Segments of the model so the animator and animate the artist's model ... Complex multi-user, multi-client VR worlds, networked games & 3d 'chats' can be made with VRML H-Anim avatars ... and a little 'glue' programming ... and you can do it all with: VRML ... and just one other language ... > > Can I reach the Extern PROTO by EAI? > I've used EAI but haven't used Extern PROTOs with it, I'm not sure if you can ... using Java to load from the VRML from the file may provide a better, more flexible solution, you can ( and I have ) read VRML from multiple files and combine them into one scene graph using Java calls rather than Extern PROTOs. VRML EAI is relatively difficult and unfortunately fails with some combinations of browser, plug-in, and OS so while it offers higher rendering speeds, it may not be the best solution. VRML is shown and animated in Java in _ multiple _ ways ... depending on your needs, preferences, and requirements ( speed vs portability, for instance ). VRML can be displayed with Java : 1) in a browser, as an "Applet" _ without _ a plug-in 2) in a browser, with a plug-in VRML viewer ( for speed ) 3) outside of browser, as an "Application" 4) with Java3D (using hardware acceleration, OpenGL or DirectX) The VRML Viewer Java applets can be light weight and * highly * portable : mine work across : Windows - Linux - Macintosh, etc. I hope these are helpful to you in some way ... 1) VRML EAI FAQ: 2) VRML EAI demo: ( #2-#4 require a VRML plug-in viewer ) 3) VMML Script Node demo: 4) VRML Java3D info & movie: 5) VRML 'pure java' demo ( Draws the Scene Joint Graph Tree ) 6 a&b) VRML files 1) http://www.frontiernet.net/~imaging/eaifaq.html 2) http://www.frontiernet.net/~imaging/HAnimPoser.html 3) http://www.frontiernet.net/~imaging/nurbs.html 4) http://www.frontiernet.net/~imaging/java3d_and_vrml.html 5) http://www.frontiernet.net/~imaging/seamless_avatars.html 6a) http://www.frontiernet.net/~imaging/Avatars/ 6b) http://www.frontiernet.net/~imaging/shout3d/models/ To the extent that it is possible these VRML files work with Cosmo, Web3D's Open Source VRML Loaders, & Shout3d ... Shout3d though doesn't accept PROTOs and H-Anim requires them so some of the files only work with one of the other, but some do work for all three, and on all three of the most common PC OSes: Windows, Macintosh, & Linux. From personal experience I can say: the pure Java 1.1 solution is the easiest and most portable. VRML can be fast, it can be portable, it can be fun ... VRML animation with Java is great: it's easy, its fun. -- Paul, Java Developer & Web Animator. ------------------------------------------------- "Imaging the Imagined: Modeling with Math & a Keyboard" =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
