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Composing a description of a virtual 3D world from values stored in a database and generated by decomposing another description of a virtual 3D world
| Details |
Inventors: Lipkin, Daniel;
Assignee:
Primary Examiner: Vo; Cliff N.
Assistant Examiner:
Attorney, Agent or Firm:
Mechanisms and methods for storing, dynamically reconstructing, and navigating a three-dimensional virtual world using a database are disclosed. A virtual world is described in a source text according to the grammar of a modeling language. The source text is read, parsed, and decomposed into a database schema in which characteristics of the world are represented in database tables. In an embodiment, nodes and fields of the world are associated with database queries. When the world is to be displayed, values in the database schema are recomposed into a source text. The database queries are executed against a database, yielding on-the-fly values for the nodes associated with the queries. In another embodiment, the world is segmented into regions, and proximity sensors are defined around the virtual position of a client that is viewing the world. When the virtual position of the client changes, visible adjacent regions of the world are selectively loaded, recomposed, and displayed. Thus, large virtual worlds are efficiently displayed and easily modified. |
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DETAILED DESCRIPTION The foregoing needs, and other needs that will become apparent in the following description, are fulfilled by embodiments of the invention, which comprises, in one aspect, a method of generating a display of a virtual world from a first source definition of the virtual world, the method comprising the steps of reading a description of each of a plurality of nodes that are in the virtual world; decomposing the description of each of the plurality of nodes and storing values identified from the description in a database; recomposing a second source definition of the virtual world using the values in the database; and delivering the second source definition to a display client that is configured to display the virtual world using the second source definition.
One feature of this aspect is that the step of decomposing the description further comprises the steps of storing the values for each of the nodes in one table of the database.
Another feature is that the step of recomposing further comprises the step of retrieving the description of each of the nodes from the table.
Still another feature involves the steps of inserting in the second source definition a reference to a data value for each of the nodes.
According to another feature, the step of storing a description further comprises the step of storing, in a node table of the database, an identifier of the node, an identifier of a parent node to which the node is related subordinately, and an order value defining an order of the node in relation to a second node subordinately related to the parent node.
Another feature involves storing a plurality of fields in the first source definition, each of the fields being associated with one of the nodes; and for each of the fields, storing a field identifier, a field value, and a node identifier in a field table of the database.
Yet another feature involves the steps of storing in the first source definition a reference to an external source definition of a second virtual world; and inserting in the second source definition a second description of the second virtual world composed from the external source definition
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