Method and apparatus for creating a wireframe and polygon virtual world

• US 5,559,995 A
• Filed: 09/02/1992
• Issued: 09/24/1996
• Est. Priority Date: 11/30/1990
• Status: Expired

• Current Assignee: Sun Microsystems Incorporated (Oracle Corporation)
• Original Assignee: VPL Research, Inc.
• Inventors: Joffe, Ethan D., Browning, Dan D., Lanier, Jaron Z.
• Primary Examiner(s): Treat, William M.
• Application Number:
  US07/939,834
• Time in Patent Office: 1,483 Days
• Field of Search: 395/500, 395/600, 395/700, 395/100, 395/119, 395/133
• US Class Current: 1/1
• CPC Class Codes: A63F 13/60 Generating or modifying game content before or while executing the game program, e.g. authoring tools specially adapted for game development or game-integrated level editor
• CPC Class Codes: Y10S 707/99931 Database or file accessing

Abstract

A method and apparatus for creating virtual worlds wherein a user may begin with a database containing a limited pictorial representation of a desired virtual world and then edit the database to specify the remaining data needed to create the actual virtual world. In one embodiment of the present invention, a database containing a limited pictorial representation of a virtual world is communicated to a receiving unit, and a grouping unit collects various descriptions of the pictorial representation into selected groups. An attribute assigning unit then assigns attributes to the groups. The attributes may include group hierarchy, constraints of motion, color, texture or other features. The modified database is then communicated to a data coupling unit which couples real world data to the groups. Finally, a rendering unit renders the virtual world which looks and functions according to the specified attributes and the real world data.

Claims

1. An apparatus for creating a virtual world data base, comprising:

receiving means for receiving first, second and third polygon representations of respective first, second and third virtual objects in a virtual world;

selecting means, coupled to said receiving means, for selecting a first edge of said first virtual object and for selecting a second edge of said second virtual object; and

grouping means, coupled to the receiving means and the selecting means, for grouping said first and second virtual objects in the virtual world into a grouped object comprising said first and second virtual objects joined at an intersection of the first and second edges, the grouped object represented by at least one of a three-dimensional and rotatable wireframe object and a three-dimensional and rotatable sweep polygon.

2. The apparatus according to claim 1 further comprising attribute assigning means, coupled to the grouping means, for assigning an attribute to the first and second edges of the first and second virtual objects, the attribute means including hierarchy means for assigning a grouping hierarchy for the first and second virtual objects wherein the second virtual object is assigned as a child object of the first virtual object and wherein an orientation and a position of the child object is calculated relative to the first virtual object.

3. The apparatus according to claim 2 wherein the attribute assigning means further comprises:

origin assigning means for assigning an origin on the first virtual object around which the third virtual object can rotate; and

constraint assigning means for assigning a three-dimensional constraint of motion to the the third virtual object to constrain how the third virtual object can rotate with respect to the first virtual object.

4. The apparatus of claim 3, wherein the constraint assigning means comprises means for specifying a minimum angle and a maximum angle that said third virtual object can rotate with respect to said origin.

5. The apparatus according to claim 3 wherein the attribute assigning means further comprises color assigning means for assigning color values to the grouped object.

6. The apparatus according to claim 5 wherein the attribute assigning means further comprises texture assigning means for assigning texture values to the grouped object.

7. The apparatus according to claim 2 further comprising data coupling means, coupled to the grouping means, for coupling real world data to the grouped object.

8. An apparatus for creating a virtual world comprising:

receiving means for receiving first, second and third polygon representations of respective first, second and third virtual objects in a virtual world;

selecting means, coupled to said receiving means, for selecting a first edge of a first virtual object and for selecting a second edge of a second virtual object; and

grouping means, coupled to the receiving means and the selecting means, for grouping said first and second virtual objects in the virtual world into a grouped object comprising said first and second virtual objects joined at an intersection of the first and second edges, the grouped object represented by at least one of a three-dimensional and rotatable wireframe object and a three-dimensional and rotatable sweep polygon;

attribute assigning means, coupled to the grouping means, for assigning an attribute to the first and second edges of the first and second virtual objects, the attribute assigning means including;

hierarchy means for assigning a grouping hierarchy for the first and second virtual objects wherein the second virtual object is assigned as a child object of the first virtual object and an orientation and a position of the child object is calculated relative to the first virtual object; and

origin assigning means for assigning an origin on the first virtual object around which the third virtual object can rotate; and

constraint assigning means for assigning a three-dimensional constraint of motion to the the third virtual object to constrain how the third virtual object can rotate with respect to the first virtual object; and

rendering means for rendering the virtual world including the grouped object.

9. The apparatus of claim 8, wherein the constraint assigning means comprises means for specifying a minimum angle and a maximum angle that said third virtual object can rotate with respect to said origin.