VR Toolbox, Inc. - QuickTime VR Glossary V-Z

Technical Support - Glossary

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vertical field of view	The vertical angular expanse, visible through a camera. Compare horizontal field of view.
view	Indicates a single, static state of an object movie. See object view, panorama view.
view animation	An animation through all views in the current row of a particular object.
view angle	See pan angle, tilt angle.
view animation	An animation through all views in the current row of a particular object. Compare frame animation.
view animation rate	See view rate.
view array	See object image array.
view center	The pixel in the image of a view that appears at the center of an object’s bounding box.
viewing constraint	A limit on the current viewing characteristics (pan angle, tilt angle, or field of view) for a panorama or object. A constraint is imposed at run time, and must always lie in the node’s viewing limits. Compare viewing limit.
viewing constraint atom	An atom in a QuickTime VR file that contains information about the initial viewing constraints for a panorama. Compare field-of-view constraint atom, pan constraint atom, tilt constraint atom.
view duration	The amount of time in an object node's video track that is occupied by a particular view of an object.
view rate	The rate at which the view animation in an object is played. Compare frame rate. view setting See control setting.
view state	A state that selects an alternate set of images for an object’s views. For instance, holding down the mouse button might change an object from one view state to another, causing a different set of images to be displayed.
viewing limit	A physical limit on the allowable viewing characteristics (pan angle, tilt angle, or field of view) for a panorama or object. A viewing limit is imposed by the panoramic or object data stored in the movie file. Compare viewing constraint.
virtual reality (VR)	The experience of exploring and interacting with a spatial environment, using a computer.
virtual world	A spatial environment that can be explored and interacted with, using a computer.
VR	See QuickTime VR, virtual reality.
VR movie	See QuickTime VR movie.
VR movie instance	See QuickTime VR movie instance.
VR object	See object node.
VR panorama	See panoramic node.
VR world	(1) See virtual world. (2) A data structure that contains general information about a QuickTime VR movie. A movie's VR world is contained in the QTVR track's sample description header, defined by the QTVRSampleDescription data type.
VR world header atom	An atom in a QuickTime VR file that contains the name of the scene and the default node ID to be used when the file is first opened. warp See correct.
warping correction mode	See correction mode.
warp space buffer	See back buffer.
zoom	To enlarge or reduce the magnification of an image, while maintaining the current point of interest.
zoom-in button	A button in the controller bar that allows the user to zoom in.
zooming speed	The relative speed of zooming in and out. This speed should be from 1 (the slowest speed) through 10 (the fastest speed); the default zooming speed is 5.
zoom-out button	A button in the controller bar that allows the user to zoom out.

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