Silicon Graphics, Incorporated

Platinum Technology Ip, Inc.

David C Mott

Christopher F Marrin

Richard J Carey

Glenn C Shute

Daniel J Woods

Richard S Pasetto

A collaborative work environment supports manipulating an object defined by a three-dimensional model by multiple remote participants. A three-dimensional model of the object is able to be translated, rotated and scaled in a work area of a whiteboard associated with the collaborative work environment. Each of the remote participants is able to view, manipulate, and mark-up the three-dimensional model of the object so that the remote participants can work collaboratively together.

Collaborative work environment supporting three-dimensional objects and multiple, remote participants

A system and method for increasing the performance associated with creating simulated 3D worlds from a network. The system and method provides a means for increasing the performance by fetching objects in the order of their importance. A priority scheme is used to determine the fetching, pre-fetching, and caching of URLs. The operations of assigning priorities, making prefetch requests and cache management is driven by data in an asset database table. The database contains information pertaining to each asset within the current scene such as the priority, status, region, type bounds, and retrieval time. The asset database table is updated based on fetching activities, camera position, and the positions of moving assets. A world scene is subdivided into appropriately sized regions when a scene is first downloaded. Asset type origins are defined and moved, based on the position, orientation, and velocity of the camera. Regions are assigned priorities based on their distance from the asset origin. Assets within particular regions are assigned priorities based on the region priorities and the asset type.

System and method for increasing performance by efficient use of limited

Collaborative work environment supporting three-dimensional objects and

A method for selecting a three-dimensional object in a three-dimensional environment improves a speed and efficiency of a lassoing technique. The method reduces the number of objects that have to be rendered into images in order to determine whether the object is included within an area selected by the lasso. The method selects objects intersected by the lasso using ray picking. These selected objects are not rendered into images. The method determines those objects whose bounding boxes do not intersect a bounding box of the area selected by the lasso. These objects are also not rendered into images. The method renders the remaining objects into images to determine which are included with the area selected by the lasso.

Method for selecting a three-dimensional object from a graphical user

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Mountain View, CA, United States of America

David C Mott