JSR 184 Mobile 3D Graphics API for J2ME TM .....
2.4 Why isn't this need met by existing specifications? Current proposals for integration of 3D into a Java environment are unsuitable for constrained devices due to ROM footprint, RAM size, or processor power requirements. They cannot be adopted as such for embedded devices. Instead, one must either design a new API for the embedded environment, or modify a subset of an existing API. Specific ongoing JSRs in the J2ME arena which are related include: JSR-134 - Gaming API is designed and optimised for gaming, targeting the CDC platform. While 3D is useful for games, it is not useful only for games and thus we view JSR-134 as complementary, not competing. By concentrating on interactive 3D graphics only, rather than on game-specific mechanisms, we hope to keep this JSR small, focussed, and independent of the feature set implemented in JSR-134. JSR-135 - Mobile Media API is a high-level control API for different media types, and it does not address interactive 3D graphics. We feel that although high-level playback control of 3D content could be provided by JSR-135 in the future, that specification is not suitable for providing core 3D graphics functionality. Therefore, a separate JSR is needed. Outside the J2ME arena, the following JSRs are related: JSR-148 - 3D Media Utilities addresses volumetric imaging and 3D vector math. The volumetric imaging part of the JSR are not relevant to this JSR, because lightweight 3D content will be represented as polygonal data rather than volumetric data. The vector math package of JSR-148 should be used at least as a reference if similar functionality is to be defined within the proposed JSR. However, on the target platform the vector operations will in practice be mostly embedded within the implementation?s native code, for speed reasons. JSR-912 - Java 3D is very large by J2ME standards. It is unclear whether even a ?cut down? version of JSR-912 would perform efficiently on the smallest platforms, given the design assumptions made for Java 3D. Cheers, Florin -----Urspr�ngliche Nachricht----- Von: karen smetana [mailto:[EMAIL PROTECTED] Gesendet: Dienstag, 10. Juni 2003 23:10 An: [EMAIL PROTECTED] Betreff: Re: [JAVA3D] j2me+java 3d as i understand it, JSR-184 the soon to be released 3d graphics API for J2Me, uses a subset of (Java 3D?) scenegraph linguistics with opengl bindings. is there any proof that java 3d can NOT be run on an emulator or embedded device? i haven't figured it out, and i have never seen it done before, but is there proof positive that it can't/can be done? thank you everyone:) Several applications have been identified for the Java Mobile 3D Graphics API (JSR-184), including games, map visualization, user interfaces, animated messages, product visualization, and screen savers. Each of these has different needs: some require simple content creation, some require high polygon throughput, yet others require high quality still images with special effects. To meet this wide spectrum of different needs, the API supports both high-level scene graph based rendering as well as immediate mode rendering in the API. You can use either one, or both at the same time, depending on the task at hand. The features of the immediate mode (or low-level) part of the API are aligned with the OpenGL ES API (standardized by Khronos). (http://servlet.java.sun.com/javaone/sf2003/conf/sessions/display-2472.en.js p) >From: Phil Chu <[EMAIL PROTECTED]> >Reply-To: Discussion list for Java 3D API <[EMAIL PROTECTED]> >To: [EMAIL PROTECTED] >Subject: Re: [JAVA3D] j2me+java 3d >Date: Tue, 10 Jun 2003 12:02:37 -0700 > >J2ME is a subset of J2SE and is missing facilities like floating-point >support. So I seriously doubt it. > >-Phil > >karen smetana wrote: >>i realize that the new jsr-184 java library soon to come is the solution >>for >>3d graphics on wireless/embedded devices, but, and maybe this is super >>dumb >>to ask, but can i run a java 3d application on the j2me wireless emulator? >>i was thinking that theoretically as long as you had java and the java 3d >>library present, you could do it. what does everyone think? can you run >>java 3d on any wireless devices? >>thanks, >>karen >> >>_________________________________________________________________ >>Protect your PC - get McAfee.com VirusScan Online >>http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963 >> >>========================================================================== = >>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". >> > > >-- >Phil Chu >[EMAIL PROTECTED] >http://www.technicat.com/ > >=========================================================================== >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". _________________________________________________________________ The new MSN 8: smart spam protection and 2 months FREE* http://join.msn.com/?page=features/junkmail =========================================================================== 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". ==========================================================================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".
