Abstract:
A new extension package entitled WALK-KIN has been integrated into the existing WALKTHRU/WALKEDIT system. It provides three separate elements that combine to create a more interesting and engaging virtual environment. The first element is the introduction of the GLIDE compiled-code paradigm for behavior scripting. In UniGrafix, the parsed scripting mechanism has a limited expression semantics allowing only primitive behavior to be defined. The new system is both faster and more expressive since it is compiled and uses C as a full scripting language. The new extension allows authors to create content objects capable of performing limited simulations in real-time within the virtual environment. The second element is the integration of this scripting mechanism into the WALKTHRU / WALKEDIT environment. Using the new WALK-KIN extensions, kinematic objects, which are more complex than previously possible and operate faster, can be placed within the virtual WALKTHRU environment and manipulated using the existing WALKEDIT object association primitives. The third element is a pair of interaction event handlers. The first is an interactive script execution mechanism that enables time-varying objects to respond to user interaction. An execution context has
Citations
|
1172
|
Tcl and the Tk toolkit
– Ousterhout
- 1994
|
|
374
|
Adaptive display algorithm for interactive frame rates during visualization of complex virtual environments
– Funkhouser, Sequin
- 1993
|
|
277
|
Visibility Preprocessing for Interactive Walkthroughs
– Teller, Sequin
- 1991
|
|
129
|
RealityEngine graphics
– Akeley
- 1993
|
|
116
|
Visibility Computations in Densely Occluded Polyhedral Environments
– Teller
- 1992
|
|
116
|
The Inventor Mentor
– Wernecke
|
|
39
|
The VRML 2.0 handbook: building moving worlds on the Web. (Mass
– Hartman, Wernecke
- 1996
|
|
31
|
Database and Display Algorithms for Interactive Visualization of Architectural Models
– Funkhouser
- 1993
|
|
31
|
CHRYSANTHOU Y.: The influence of dynamic shadows on presence in immersive virtual environments
– SLATER, USOH
- 1995
|
|
26
|
Interactive simulation of fire in virtual building environments
– Bukowski, Séquin
- 1997
|
|
21
|
The VRML Sourcebook
– Ames, Nadeau, et al.
|
|
17
|
Autonomy, interaction and presence
– Zeltzer
- 1992
|
|
12
|
Java Language Reference
– Grand
- 1997
|
|
6
|
the Consolidated Model of Fire Growth and Smoke Transport. NIST technical note 1299
– Peacock, Forney, et al.
- 1993
|
|
5
|
A Motion Description and Animation Package
– BUMP
- 1987
|
|
3
|
et al. MPEG video: compression standard
– Mitchell
- 1996
|
|
2
|
UNIGRAFIX 3.1-data structure and language
– Couch
- 1994
|
|
1
|
Object Associations: A Simple and Practical Approach to Virtual 3D Manipulation
– Bukowksi, Séquin
- 1995
|
|
1
|
The WALKTHRU Editor: Towards Realistic and Effective Interaction with Virtual Building Environments
– Bukowksi
- 1995
|
|
1
|
UNIGRAFIX 3.1 and the Ugmovie animation previewer
– Couch
- 1994
|
|
1
|
Motif Reference Manual
– Ferguson
- 1993
|
|
1
|
SDL: Scene Description Language
– Séquin
- 1991
|
|
