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

Media Data Atom TypesNode Information Atom ContainerNote In QuickTime VR movie files, all angular values are stored as 32-bit floating-point values thatspecify degrees. In addition, all floating-point values conform to the IEEE Standard 754 for binaryfloating-point arithmetic, in big-endian format.Specific Information AtomsDepending on the value of the hotSpotType field in the hot spot info atom there may also be a type specificinformation atom. The atom type of the type-specific atom is the hot spot type.Link Hot Spot AtomThe link hot spot atom specifies information for hot spots of type kQTVRHotSpotLinkType ('link'). Itsatom type is thus 'link'. The link hot spot atom contains specific information about a link hot spot.The structure of a link hot spot atom is defined by the QTVRLinkHotSpotAtom data type:typedef struct VRLinkHotSpotAtom {UInt16UInt16UInt32UInt32Float32Float32Float32FloatPointUInt32Float32Float32Float32FloatPointFloat32UInt32UInt32UInt32majorVersion;minorVersion;toNodeID;fromValidFlags;fromPan;fromTilt;fromFOV;fromViewCenter;toValidFlags;toPan;toTilt;toFOV;toViewCenter;distance;flags;reserved1;reserved2;} VRLinkHotSpotAtom, *VRLinkHotSpotAtomPtr;2012-08-14 | © 2004, 2012 Apple Inc. All Rights Reserved.280