Implementing stack extension in a modifier stack
US6714194B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 21, 2001 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Aug 2, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2219/2021
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for implementing stack extensions in a modifier stack that is associated with a plurality of components that are sequentially applied to a geometry object when the modifier stack is evaluated. According to one aspect of the invention, an extension channel object is attached to the geometry object. The extension channel object is associated with a notification mechanism that notifies the extension channel object if a particular event occurs while the modifier stack is being evaluating. In response to receiving a notification that one of the plurality of components has caused a particular event to occur while the modifier stack is being evaluated, the extension channel object influences how the geometry object is modified by the component within the modifier stack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.