Environmental Engineering Reference
In-Depth Information
collaborative applications. Croquet provides rich tutorials, resources and videos as
educational materials for developers (Onyesolu & Eze, 2011).
5.3.5 Ogoglio
Ogoglio is an open source 3D graphical platform like Croquet. The main goal of the Ogoglio
is to build an online urban style space for creative collaboration. Ogoglio platform is built
from the languages and protocols of the web. Therefore, it's scripting language is javascript;
it's main data transfer protocol is hypertext transfer protocol (HTTP), it's 2D layout is
hypertext markup language (HTML) and cascading style sheet (CSS), and it has lightwave
object geometry format for its 3D (http://foo.secondlifeherald.com/slh/2007/01/
interview_with_.html). Ogoglio is very different from the other virtual reality world
development platforms because it uses Windows, Linux, Solaris operating system platforms
and runs on web browsers such as Internet Explorer, Firefox, and Safari.
5.3.6 Syzygy
This is a cross-platform, distributed operating system for PC-cluster-based VR. Syzygy is a
programming toolkit for writing virtual reality or other graphical applications. Syzygy
applications can run on a single computer, but Syzygy is especially designed for the creation
of applications to run on clusters of networked computers. Programs or instances of the
same program running on different computers in the cluster communicate with one another
and share data. The cluster as a whole effectively becomes a single computer with multiple
screens and input devices. The rendering of your virtual world is synchronized on all of the
computers (to within a few milliseconds), so different screens in the cluster give you
different simultaneous views on the virtual world. Included utilities handle communication
with 6DOF trackers and other input devices. Spatially-localized sound is supported using
the
FMOD
libraries
and
non-localized
text-to-speech
on
Windows
(http://www.isl.uiuc.edu/syzygy.htm).
5.4 Digital sound editing software
Digital sound editing software is used to mix and edit sounds that objects make within the
virtual environment. There are so many digital sound editors. Some are presented in table 1.
6. Conclusion
There are so many VR resources and tools from industry providers. Some companies
specialize in providing hardware components for use in VR system such as accelerator
cards, pointing and manipulation devices, helmets, shutter glasses, motion platforms,
projection system and spatial position and detection systems. There some others companies
that specialize in software tools such as 2D software tools, 3D software tools and VR
simulation tools. There are a quite handful of companies and institutions that specialize in
providing VR applications for manufacturing, education, simulation, design evaluation
(virtual prototyping), architectural walk-through, ergonomic studies, simulation of
assembly sequences and maintenance tasks, assistance for the handicapped, study and
treatment of phobias, entertainment, rapid prototyping and much more.
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