Node Location Atom Structure5

Programming With QuickTime VR

Node Location Atom Structure

Currently the node location atom is the only child atom defined for the node ID atom. Its atom type iskQTVRNodeLocationAtomType ('nloc'). A node location atom describes the type of a node and its location.

The structure of a node location atom is defined by the VRNodeLocationAtom data type:



 
typedef struct VRNodeLocationAtom {

    UInt16                              majorVersion;

    UInt16                              minorVersion;

    OSType                              nodeType;

    UInt32                              locationFlags;

    UInt32                              locationData;

    UInt32                              reserved1;

    UInt32                              reserved2;

} VRNodeLocationAtom, *VRNodeLocationAtomPtr;

majorVersion: The major version number of the file format.
minorVersion: The minor version number of the file format.
nodeType: The node type. See "Node Types" in Chapter 2, "QuickTime VR Manager," for a description of the available node types. Currently, this field should contain either kQTVRPanoramaType or kQTVRObjectType .
locationFlags: The location flags. Currently, this field must contain the value kQTVRSameFile , indicating that the node is to be found in the current file. In future, these flags may indicate that the node is in a different file or at some URL location.
locationData: The location of the node data. When the locationFlags field is kQTVRSameFile , this field should be 0. The nodes are found in the file in the same order that they are found in the node list.
reserved1: Reserved. This field must be 0.
reserved2: Reserved. This field must be 0.