VR Toolbox, Inc. - QuickTime VR Glossary J-M

Technical Support - Glossary

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key node	An important node in a scene.
label display area	An area in the controller bar, in which information can be displayed. For instance, when the cursor is over one of the buttons, the button’s name appears in the label display area.
leaf atom	A QuickTime atom that contains no other atoms. Compare container atom. limit See viewing limit.
link	A connection between two nodes in a QuickTime VR movie.
link hot spot	A hot spot that allows a user to navigate from one node in a scene to another.
lossless compression	A compression scheme that preserves all the original data.
low-resolution image track	A video track that contains a diced lowresolution version of a panoramic image.
mouse-click hysteresis	The distance, in pixels, from the location of a mouse-down event to the limit in which the cursor is considered not to have moved.
mouse-click timeout	The number of ticks, after which a mouse click times out, and is automatically switched from a hot spot selection, into a pan.
mouse-down tracking	The process of tracking the state of the mouse button when it is clicked in a QuickTime VR movie. Compare mouse-over tracking.
mouse-motion scale	A value that indicates the number of degrees or radians that an object or panorama is panned or tilted, when the cursor is dragged the entire width of the VR movie image.
mouse over hot spot procedure	An application-defined procedure that is executed whenever the cursor moves over, remains above, or leaves a hot spot.
mouse-over tracking	The process of tracking the location of the cursor when it is in a QuickTime VR movie and changing the shape of the cursor as appropriate. Compare mouse-down tracking.
movie	A set of time-based data that is managed by the Movie Toolbox. A QuickTime movie may contain sound, video, animation, laboratory results, financial data, or a combination of any of these types of time-based data. A QuickTime movie contains one or more tracks; each track represents a single data stream in the movie.
movie controller	See movie controller component, QuickTime VR movie controller.
movie controller action	A constant (of type mcAction ) used by QuickTime movie controller components in the MCDoAction function. Applications that include action filters can receive any of these actions.
movie controller component	A component that manages the user interface for playing and editing movies.
movie image	The image currently displayed in a QuickTime VR movie.
movie instance	See QuickTime VR movie instance.
multi node movie	A QuickTime VR movie that includes more than one node.Compare single-node movie.

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