Technical Reference/terms

From OpenSimulator

Revision as of 10:37, 24 May 2009 by Mark.malewski (Talk | contribs)

Jump to: navigation, search

Technical Reference -> Terms -> Overview

Technical Reference

This is a set of software technical reference pages that include definitions and describe how the simulator works from invocation, initialization, main loop and various services.

What do all these terms mean?

Technical Reference Terms and Definitions

Definition of some common terms:

A region has an (x/y) position in a grid, and a region-handle calculated from the position. A region can also be defined as an IP Endpoint that the Viewer can establish a client connection to. The unique id of a region is a uuid, this means that a region can change position, and because of that position change, it the handle will be recalculated. The handle will uniquely identify a position in a grid.

A region contains a number of sub components:

  • Scene
  • Client/Viewer circuits

A scene is part of a region, currently there is a one to one relationship, i.e. one region has one scene. A scene contains all the 3d objects, called Entities, entities can either be ScenePresences or SceneObjectGroups. A ScenePresence can be represented by an avatar, if it is a root scene presence. SceneObjectGroups consists of a number of SceneObjectParts.

Each viewer is represented by one or more avatars. The Root avatar or ScenePresense functions as a kind of cursor, into the grid. Where the region will keep the viewer updated on the state of the simulation, taking place in the scene. Besides the root presence, a number of child presences will exist in the neighboring regions, enabling the viewer to know what is going on in the neighboring regions.

An application which is used to view the state of the simulation. Currently only three different viewers are known: the LL viewer, the OpenSL test client and AjaxLife.

Each connection between a viewer and a region, regardless if the avatar is the root or a child, is a session.

A program which can manage several Regions

See Also

Personal tools
About This Wiki