Programming with QuickTime VR

Downloading Panoramas

The application can allow the user to interact with a downloading panorama in the following ways.

If the QuickTime VR panorama movie was saved using QuickTime version 2.1, the placeholder will be seen the whole time the movie is being downloaded, the same way it was done in QuickTime VR 1.0.x.
If the QuickTime VR panorama movie was saved using QuickTime version 2.5, then during the downloading of the panorama QuickTime VR 2.1 shows a black background with a grid showing the locations of the tiles. As each tile becomes available, the software updates the movie to the highest resolution of the tile. The user can manipulated the movie as normal while the movie is being loaded. The hotspots are not active while the movie is being downloaded.
The application also has the option to display a version of the panorama in a lower resolusion or with fewer colors so the user can see the whole picture. A multinode movie has active hotspots available while being downloaded.