发明名称 |
Efficient rendering utilizing user defined shields and windows |
摘要 |
A shield is a piece of geometry, such as a rectangle, that defines active/inactive regions in the world coordinate system that depend upon the position and orientation of the camera with respect to the shield. The shield is distinct from the objects that represent the scene. A preprocessing step determines those objects (or portions of objects) of the scene that lie in the inactive region defined by each of the shields. Those objects (or portions of objects) that lie in the inactive region defined by each of the shields are forwarded to the graphics subsystem wherein the objects are rendered for display. On the other hand, those objects (or portions of objects) that lie in the active region defined by each of the shields are not forwarded to the graphics subsystem.
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申请公布号 |
US5926182(A) |
申请公布日期 |
1999.07.20 |
申请号 |
US19960752138 |
申请日期 |
1996.11.19 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
MENON, JAI P.;ROSSIGNAC, JAREK ROMAN |
分类号 |
G06T15/40;(IPC1-7):G06F15/00 |
主分类号 |
G06T15/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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