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

Media Data Atom TypesVR MediaThe structure of the VR world atom container is shown in Figure 4-21 (page 269). The component atoms aredefined and their structures are shown in the sections that follow.Figure 4-21Structure of the VR world atom containerVR worldVR world headerName stringImaging parentPanorama imagingPanorama imagingNode parentNode IDNode locationNode IDNode locationCursor parentCursorColor cursorVR World Header Atom StructureThe VR world header atom is a leaf atom. Its atom type is kQTVRWorldHeaderAtomType ('vrsc'). It containsthe name of the scene and the default node ID to be used when the file is first opened as well as fields reservedfor future use.The structure of a VR world header atom is defined by the QTVRWorldHeaderAtom data type.typedef struct VRWorldHeaderAtom {UInt16UInt16QTAtomIDUInt32UInt32UInt32majorVersion;minorVersion;nameAtomID;defaultNodeID;vrWorldFlags;reserved1;2012-08-14 | © 2004, 2012 Apple Inc. All Rights Reserved.269