Interaction demonstration using the Colosseum3D framework

Copyright VRlab Umeå Sweden

In short

Colosseum3D is a framework for building interactive 3D simulation with 3D graphics, spatial sound, rigid body dynamics, character animation and AI characters.

It utilizes existing toolkits such as:

The authoring process consists of a structured file format for describing sound, 3D graphics and physical attributes; a Lua scripting interface for building structures, handling collisions, playing sounds and accessing the scenegraph; and a C++ interface.

Read more about the integration between osg and vortex here.

Interaction demo

• Xvid format (10.1Mb)
• DivX format (11.7Mb)
• Microsoft MPEG4 format (22.6Mb)

The vide demonstrates some of the direct manipulation that is possible by using a dynamic simulation connected with motion trackers attached to a users hand. The wheelchair is also simulated using rigid-body simulations. This opens up possibilities of exploring problems of using wheelchairs in non handicap adapted environments and such.

The environment are built using the following tools:

• Multigen Creator
  • Most of the visual scene is modelled Multigen Creator
  • Most of the physical scene (walls, doors, table) is also modelled in Multigen Creator by specifying physical attributes for scene objects. This description is parsed by the framework and the corresponding visual/physical scene is created and simulated.
• 3DStudio Max
  • By using the OsgExp exporter from 3D Studio Max objects such as the wheelchair, and other parts of the scene is exported into the naitive osg format.
• Other objects in the scene are described in the structured file format available, which makes it easy to describe objects with both Visual as well as Physical attributes.
• Sound is also specified in the structured file format (example of a description file)
• The interaction with the crane and the water, is an example of Lua scripting. By defining collision eventhandlers in Lua, the actions taken during contact, release and continous contact can be developed rapidly in an interpretating scripting language. In Lua everything from manipulating the OSG scene to accessing the physical simulation can be done. (sample lua scripting file)

(10.1Mb, avi movie, requires DivX 5.1)

Last updated: 2004-03-26 8:13 by Anders Backman (andersb@hpc2n.umu.se)