Programming with QuickTime VR

Geometry Selectors

The geometry parameter used in the procedures QTVRSetBackBufferPrefs , QTVRGetBackBufferSettings , and QTVRGetBackBufferMemInfo specifies the type and orientation of the panorama data. Only the vertical cylinder geometry is used in the current version of QuickTime VR; calls to QTVRGetBackBufferSettings and QTVRGetBackBufferMemInfo always return the value kQTVRVerticalCylinder. The parameter is present to provide a means of expansion to new panoramic geometries in the future.



 
enum {

    kQTVRUseMovieGeometry                           = 0,

    kQTVRVerticalCylinder                           = 'vcyl'

};

For a description of the orientation of the panorama data, see "QuickTime VR File Format/QuickTime VR version 2.0 requires the original panoramic image to be rotated 90 degrees counterclockwise."