Quicktime File Format (2012-08-14).pdf

Media Data Atom TypesObject TracksdefaultViewStateThe 1-based index of the default view state. The default view state image for a given view is displayedwhen the mouse button is not down.mouseDownViewStateThe 1-based index of the mouse-down view state. The mouse-down view state image for a given viewis displayed while the user holds the mouse button down and the cursor is over an object movie.viewDurationThe total movie duration of all image frames contained in an object’s view. In an object that uses a singleframe to represent a view, the duration is the image track’s sample duration time.columnsThe number of columns in the object image array (that is, the number of horizontal positions or incrementsin the range defined by the minimum and maximum pan values). The value of this field must be positive.rowsThe number of rows in the object image array (that is, the number of vertical positions or increments inthe range defined by the minimum and maximum tilt values). The value of this field must be positive.mouseMotionScaleThe mouse motion scale factor (that is, the number of degrees that an object is panned or tilted whenthe cursor is dragged the entire width of the VR movie image). The default value is 180.0.minPanThe minimum pan angle, in degrees. The value of this field must be less than the value of the maxPanfield.maxPanThe maximum pan angle, in degrees. The value of this field must be greater than the value of the minPanfield.defaultPanThe default pan angle, in degrees. This is the pan angle used when the object is first displayed. The valueof this field must be greater than or equal to the value of the minPan field and less than or equal to thevalue of the maxPan field.minTiltThe minimum tilt angle, in degrees. The default value is +90.0. The value of this field must be less thanthe value of the maxTilt field.maxTiltThe maximum tilt angle, in degrees. The default value is –90.0. The value of this field must be greaterthan the value of the minTilt field.2012-08-14 | © 2004, 2012 Apple Inc. All Rights Reserved.304