There are at least 2 exemples about it in Java3D : Skin and Bones http://www.j3d.org/utilities/bones.html
RedMong's Interactive Garment Simulation for Electronic Commerce http://vr.kaist.ac.kr/~redmong/ Alessandro >From: Silvère Martin-Michiellot >Reply-To: Discussion list for Java 3D API >To: [EMAIL PROTECTED] >Subject: Re: [JAVA3D] skin and bones animation >Date: Tue, 11 Nov 2003 18:58:39 +0100 > >At 14:10 10/11/2003 +0000, you wrote: >>Hi, >>I have a 3D model of a human figure - each limb has its geometry >>defined >>under a series of TransformGroups enabling me to control how the >>character moves. This is ok but it's difficult to precisely state >>where >>the joint is so as to minimise gaps that appear if a limb is bent >>to an >>extreme and so on. I am sure this is a common problem. >> >>My question is, though, can someone please explain what graphic >>artists >>mean when they talk about "skin and bones animations" or "skeleton >>and >>skin animation"? Is this where as a figure moves, the skin (clothes >>or >>whatever) "stretch" so that the above gap problem does not occur? > >As far as I know there are specific algorithms to "merge" to shapes >together so that when you twist the upper torso, the lower part is >also >affected. I don't think many games do use that as it is a complexity >overhead. I don't neither think morphing is used also I have >developed this >in my hanim package. Dave Yazel for magicosm can probably say more >about >animation in Java in a realistic situation. > >This is a topic on which I ask myself many questions and I'd be >happy to >receive information on the topic (code/articles) should anyone have >some. > >>How can such animated figures be included in Java3D? Is it a case >>of >>loading the key frames and morphing between them? How effective is >>that >>? What is the performance [overhead] like? >> >>I guess the problem then becomes that you are limited to whatever >>animations have been developed by the graphic artist. Or is there a >>way >>of controlling individual limb movement from the files they >>generate? >> >>What happens in professional games? How are they developed? >> >>Please forgive me for asking a question that to you all may seem >>common >>knowledge - all the articles that I've found on this are written >>from a >>graphics perspective and do not talk about how such animations are >>dealt >>with in Java3D, or any other development platform for that matter. >> >>Many thanks, >>-Paul Yahoo! Mail - 6MB, anti-spam e antivírus gratuito. Crie sua conta agora: http://mail.yahoo.com.br =========================================================================== 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".
