Vector eye2/15/2023 ![]() Or, to put it another way, the view-up vector is how you tell your camera system what direction "up" is, for purposes of orienting the camera. Short answer: the view-up vector is not derived from other components: instead, it is a user input, chosen so as to ensure the camera is right-side up. I tried it on some examples but it didn't quite match up with the given solutions (though it came close sometimes). Unfortunately the book provides only very basic and crude diagrams and doesn't provide any examples.ĭoes this sentence mean that all view-up vectors are simply (0, 1, 0)? The bold sentence is the one confusing me the most. With enough information to set up a coordinate system with origin e The sky" for a person standing on the ground. The view-up vector is any vector in the plane that bothīisects the viewer's head into right and left halves and points "to The gaze direction is any vector in the direction that the viewer is Of graphics as a photographic process, it is the center of the lens. The eye position is a location that the eye "sees from". There are a multitude of conventions for specifying viewer We'd like to be able to change the viewpoint in 3D and look in anyĭirection. This is an excerpt from Fundamentals of Computer Graphics by Peter Shirley. ![]()
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