G. Bell, R. Carey, and C. Marrin. The Virtual Reality Modeling Language Specification. Tech- nical report, August 1996. Version 2.0, ISO/IEC CD 14772.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....world. If a user interacts with an object in the virtual world, e.g. a virtual whiteboard, events are notified to interested parties. This is analogous to interacting with the UI of a traditional application. We have built an event based VR system (see figure 2) We used the Java VRML2 toolkit [4] to im plement the graphical aspects of the world and the entities populating it. Our prototype world is a representation of our Laboratory. Avatars, representing various members of the department, as well as objects to interact with, are also implemented. In response to injected actions, avatars ....

G. Bell, R. Carey, and C. Marrin. The Virtual Reality Modeling Language Specification. Tech- nical report, August 1996. Version 2.0, ISO/IEC CD 14772.

.... t (a track) and z , a list of numbers. t has as default value a track with x=8, y=23, and z=0. type line t: track= track x=8 ,z:number creates an object t1 , of type track t1 = track y = 9, x = 10, z= hi creates a line l , with t= track x=9, y=10 , and z=[2,3,4] (a list) l = line t= track x=t1.y, y=t1.x , z= 2,3,4] The syntax of Sol was strongly influenced by BiBTeX [21] and UIL (User Interface Language) a language for describing user interfaces in Motif [24] In March 1993 we finished a first implementation of the Sol language, but we never ....

....as default value a track with x=8, y=23, and z=0. type line t: track= track x=8 ,z:number creates an object t1 , of type track t1 = track y = 9, x = 10, z= hi creates a line l , with t= track x=9, y=10 , and z= 2,3,4] a list) l = line t= track x=t1.y, y=t1.x , z=[2,3,4] The syntax of Sol was strongly influenced by BiBTeX [21] and UIL (User Interface Language) a language for describing user interfaces in Motif [24] In March 1993 we finished a first implementation of the Sol language, but we never delivered it. By mid 1993, we realized that both DEL and Sol ....

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G. Bell, R. Carey, and C. Marrin. The Virtual Reality Modeling Language Specification--- Version 2.0. http://www.vrml.org/VRML2.0/FINAL/, Aug. 1996. (ISO/IEC CD 14772).

....in 2D browsers or are launched as helper applications when connecting to a 3D site. VRML specification development has been effectively coordinated by mail list, occasional meetings and a self selected VRML Architecture Group (VAG) enabling consensus by a large, active and open membership [7] [8]. The VRML 1.0 standard has been in use for over a year and lessons learned have already been incorporated in the next version of VRML. Complex issues surrounding real time animation in next generation VRML (version 2.0) include entity behaviors, user entity interaction and entity coordination. ....

....behaviors, user entity interaction and entity coordination. Many factors are involved. In order to scale to many simultaneous users, peer to peer interactions are necessary in addition to client server query response. An approved specification for the internal and external behaviors is complete [8]. VRML 2.0 will provide local and remote hooks (i.e. an applications programming interface or API) to graphical scene descriptions. Dynamic scene changes will be stimulated by any combination of scripted actions, message passing, user commands or behavior protocols (such as DIS or Java) Thus the ....

Bell, Gavin, Carey, Rikk, Marrin, Chris et al., "The Virtual Reality Modeling Language Specification," Version 2.0, August 4 1996. Available at http://vrml.sgi.com/movingworlds /

....VRML Project Proposal Chan Ming Fei Hung Kei Keung Tam Tsz Shing 97160930 97060940 97011600 mfchan1 cse kkhung cse tstam cse 15 February 1998 1 Introduction VRML 2. 0[1] (Virtual Reality Modeling Language) is attracting a tremendous attention within the Internet Community lately. The ease of use and expressive power is the key of success of VRML. In the course of Virtual Reality (CSC5460) we are going to work with a VR project using VRML 2.0. This is a short ....

Gavin Bell, Rikk Carey and Chris Marrin, The Virtual Reality Modeling Language Specification Version 2.0, ISO/IEC CD 14772, http://vrml.sgi.com/moving-worlds/spec/

....feedback mechanisms. Our results show that audio feedback leads to better performance than other alternatives. Visual feedback produces more consistent performance, but its use did introduce a negative effect on playing the virtual ping pong game in our experiments. 1 Introduction VRML 2. 0[1] is attracting a tremendous amount of attention recently, especially within the Virtual Reality Research Community. The ease of use and expressive power are the key success of VRML. However, very little work has been done to evaluate the feedback mechanisms on this new programming paradigm. This ....

....of our Virtual Ping Pong System, starting from the platform to various modular components of the system, then further to the input method of playing the virtual game. 3.1 Programming Environment The Virtual Ping Pong System is developed in the Virtual Reality Modeling Language (VRML) 2. 0 [1] and Java language[2] Basically, the VRML portion of our project is for the description of 3D world as well as the control of input interface. A Java program is built to keep track of the state information of the dynamic objects within the environment. The ease of use and the expressive power of ....

Gavin Bell, Rikk Carey and Chris Marrin, The Virtual Reality Modeling Language Specification Version 2.0, ISO/IEC CD 14772, http://vrml.sgi.com/moving-worlds/spec/

....such a scene graph can be found in the sample program in Appendix A. Root Spaceball Camera Transform Vehicle Transform Transform Transform Shape Shape Material Cube Material Fig. 3. A Scene DAG Viewed Schematically and by the User 3.2. Constraints While standard graphics formats such as VRML 1. 0 [Bell95] simply provide static scene rendering descriptions, Metis allows much of the interactive and dynamic behavior of the virtual environment to be defined in the scene graph itself. This is useful for implementing simulation based VR applications where the interaction and simulation event response ....

Bell G., Parisi A., Pesce M. (1995) The Virtual Reality Modeling Language Specification, Version 1.0.

....Virtual Reality Modeling Language (VRML) has introduced a new concept to the Internet and the World Wide Web (WWW) three dimensional (3D) graphical visualization and interactivity. The first definition of the Virtual Reality Modeling Language (VRML) is given in the VRML Architecture Group (VAG) [8] Mission Statement: The Virtual Reality Modeling Language (VRML) is a language for describing multiparticipant interactive simulations virtual worlds networked via the global Internet and hyper linked with the World Wide Web. VRML started in 1994 and the first official VRML 1.0 specification ....

....language for describing multiparticipant interactive simulations virtual worlds networked via the global Internet and hyper linked with the World Wide Web. VRML started in 1994 and the first official VRML 1.0 specification was released in May, 1995. The final and clarified version of VRML 1. 0C [8], released in January, 1996, was based on the the OpenInventor ASCII File Format from Silicon Graphics, Inc. It allowed for the creation of virtual worlds with limited interactive behavior. These worlds could contain objects which had hyper links to other worlds, HTML documents or other valid MIME ....

G. Bell (Silicon Graphics Inc.), A. Parisi (Intervista Software), and M. Pesce (VRML List Moderator). The Virtual Reality Modeling Language Specification - Version 1.0C, January 1996. (http://vag.vrml.org/vrml10c.html).

.... of such languages are: ffl the language used by BibT E X to specify bibliographic references [6] ffl UIL (User Interface Language) used to describe graphical user interfaces in Motif [4] ffl VRML (Virtual Reality Modeling Language) used to describe three dimensional objects and views [1]. Although such languages are used mainly to describe structures and values, they usually provide some weak abstraction (i.e. programming) facilities. For instance, BibT E X allows the naming of strings, and UIL supports simple arithmetic calculations. However, if a language is at all successful, ....

Gavin Bell, Rikk Carey, and Chris Marrin. The Virtual Reality Modeling Language Specification---Version 2.0. http://vag.vrml.org/VRML2.0/FINAL/, August 1996. (ISO/IEC CD 14772).

....collision detection among arbitrary polygonal models undergoing rigid motion in VRML environments. We unify several techniques from previous work in large scale collision detection and hierarchical data structures [4, 5] and propose a clean integration of the resulting libraries with VRML 2. 0 [2]. Our system offers a practical toolkit for performing interactive and robust collision detection in VRML environments. Organization: In Section 2 of this paper, we describe the desired characteristics of a collision detection system for VRML applications. Section 3 presents the overall system ....

G. Bell, R. Carey, and C. Marrin. The Virtual Reality Modeling Language Specification Version 2.0. http://vag.vrml.org/VRML2.0/FINAL/, August 1996.

....environments fit within it. 4.1 Virtual Reality Modeling Language VRML The Virtual Reality Modeling Language (VRML) has introduced a new concept to the Internet and the World Wide Web (WWW) three dimensional (3D) graphical visualization and interactivity. In the first VRML specification [5], a descriptive definition of VRML is given: The Virtual Reality Modeling Language (VRML) is a language for describing multiparticipant interactive simulations virtual worlds networked via the global Internet and hyper linked with the World Wide Web. A nonprofit corporation VRML Consortium, ....

G. Bell, A. Parisi, and M. Pesce. The virtual reality modeling language specification - Version 1.0C, Jan. 1996.

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G. Bell, A. Parisi, and M. Pesce, "The Virtual Reality Modeling Language Specification," available on the Internet at http://vrml.wired.com (November 1994).

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G. Bell, R. Carey, and C. Marrin. The Virtual Reality Modeling Language Specification, Version 2.0, http://vag.vrml.org/ VRML2.0/FINAL, August 1996

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G. Bell, R. Carey, and C. Marrin. The Virtual Reality Modeling Language Specification, Version 2.0, http://vag.vrml.org/ VRML2.0/FINAL, August 1996

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