Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Patent
1998-03-05
2000-06-13
Powell, Mark R.
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
345423, G06T 1700
Patent
active
060755407
ABSTRACT:
A mesh data model efficiently represents the appearance of the modeled object by storing scalar appearance attributes, such as may be used as parameters of a shading function applied to faces of a mesh, in association with wedges. The wedges are sets of contiguous vertex-adjacent corners having identical scalar appearance attributes. The mesh data model thus stores the scalar appearance attributes once for each wedge, rather than per corner of the mesh. The mesh data model can be structured as arrays of face, wedge and vertex records, where each face record contains references to the wedge records of the wedges in which the face's corners belong. The mesh data model can be used in a progressive mesh representation.
REFERENCES:
"Object Files," section B1, pp. 1-46 (prior to Mar. 5, 1998).
Wernecke, "Programming Object-Oriented 3D Graphics with Open Inventor, Release 2," The Inventor Mentor chapter 5, pp. 126-132 (1994).
"3D Graphics Programming with QuickDraw 3D," chapter 4, pp.3-23, (1995).
Schmalstieg and Schaufler, "Smooth Levels of Detail," (1997).
Hoppe, "Progressive Meshes," Computer Graphics (SigGRAPH 96 Proceedings) (1996).
Microsoft Corporation
Powell Mark R.
Sealey Lance W.
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