QTVR
QTVR Online
Tutor Menu
- Under the
Covers
QTVR Panoramas -
|
|
QTVR Panoramas are centered on a single point of observation, called a node. In essence, the view of 3D space from the point of observation is mapped onto a cylindrical image which surrounds the point.
A QTVR panorama can represent either a full or partial horizontal view from the point of observation. Full panoramas encompass a seamless cylinder which allows unrestricted horizontal movement. A certain amount of vertical movement is also possible, limited only by the height of the cylinder. Partial panoramas are a subset of a full panorama as they have only a limited horizontal range of motion.
Full Panorama |
Partial Panorama |
From the central observation point (the node), a viewer may zoom into or out from a particular view by changing the zoom angle of their view. The zoom angle thus represents the mapping of the cylindrical image into the viewing window on a user's monitor. As a user zooms into a panorama, the viewing window on their monitor remains the same size but shows an increasingly smaller area of the cylindrical image.
Large zoom angle |
Small zoom angle |
The ability to zoom into the panorama can lead to a user seeing enlarged individual pixels at very small zoom angle settings. For this reason, most developers will set a minimum and/or maximum value for the zoom angle to prevent either too wide an angle of view, or a view that becomes too pixelated.
 Prev Page |
 Panoramas Menu |
 Next Page |