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

Media Data Atom TypesNonstandard CubesFloat32Float32defaultTilt;defaultFieldOfView;};typedef struct QTVRCubicViewAtomQTVRCubicViewAtom;The fields are filled in as desired for the cubic image. This atom is ignored by older versions of QuickTime VR.Typical minimum and maximum field values are shown in Table 4-27 (page 299).Table 4-27FieldminPanmaxPanminTiltmaxTiltValues for min and max fieldsValue0.0360.0-90.090.0minFieldOfViewmaxFieldOfView5.0120.0You add the cubic view atom to the pano sample atom container (after adding the pano sample data atom).Then use AddMediaSample to add the atom container to the panorama track.Nonstandard CubesNote VR Media is deprecated in the QuickTime file format. The information that follows is intendedto document existing content containing VR Media and should not be used for new development.Although the default representation for a cubic panorama is that of six square faces of a cube, it is possible todepart from this standard representation. When doing so, a new atom must be added to the pano sampleatom container. The atom type is 'cufa'. The atom is an array of data structures of type QTVRCubicFaceData.Each entry in the array describes one face of whatever polyhedron is being defined. QTVRCubicFaceData isdefined as follows:2012-08-14 | © 2004, 2012 Apple Inc. All Rights Reserved.299