Real time light tracing method of non linear refraction and reflection on plane and spherical surfaces |
Title： |
| Real time light tracing method of non linear refraction and reflection on plane and spherical surfaces |
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Application Number： |
02130945 |
Application Date： |
2002/09/23 |
Announcement Date： |
2003/04/16 |
Pub. Date： |
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Publication Number： |
1410948 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
G06T 17/00 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Qin Kaihuai |
Key Words： |
Real time, light tracing method, non linear, refraction, reflection, plane, spherical surfaces |
Abstract： |
The optical mapped virtual vertex for each vertex of the polyhedron to be refracted or reflected is calculated. Based on the topological relation of the polyhedron, each virtual vertex is connected to form the virtual object composed of several virtual faces. In rendering, the virtual object is projected to the relevant refraction or reflection surfaces by using recursive algorithm. With being mixed with the color value of the surface, the reality graphics, similar to the graphics obtained by the ray tracing method, is obtained. The invention gives the formula to calculate the virtual vertex P' for any point P in five circumstances: the object inside or outside the plane refractive body, the three-dimension refraction, the spherical surface reflection and refraction as well as the algorithm and drawing procedure. |
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| Last Update |
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2008-4-17 |
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Selected patents owned by Tsinghua University filed in 2005 are loaded. |
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2008-3-31 |
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Selected patents owned by Tsinghua University filed in 2006 and 2007 are load. |
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