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Ray Tracing Review Slides - RayTracing RAYTRACING 03 Ray...

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10/15/2009 1 RAY TRACING Ray Tracing 10/15/2009 2 03 Ray Tracing Internet Raytracing Competition http://www.irtc.org/ September-October 2006 10/15/2009 3 03 Ray Tracing Virtual Camera Definition View direction Virtual Camera Model 1. The camera location 2. view or gaze direction 3. Orientation of camera relative to the object 4. Frustum. 10/15/2009 4 03 Ray Tracing View Specification View Specification: Eye location of eye point At a point along view direction vector Up a vector defining an arbitrary vector that will remain upright after projection to view plane Z w u v e Y X 10/15/2009 5 03 Ray Tracing Location and Orientation (vectors): Eye location of eye point At a point along view direction vector Up a vector that helps defining the Y axis Viewing Extent User Parameters Shape (scalars): fov field of view angle aspect view plane aspect ratio near perpendicular distance to near plane far perpendicular distance to far plane At Up Eye aspect = width / height near far fov 10/15/2009 6 03 Ray Tracing
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