README - QT3DTween

QT3DTween is a sample application that creates a QuickTime movie 

containing both a 3D track and a tween track. The 3D track is created 

by reading data from any 3DMF file. The tween track contains 

QuickDraw3D camera data. The camera data in the tween track 

specifies both an initial position for the camera and a final 

position for the camera. The result of the tween track can be 

seen as the movie is played: the objects in the scene will appear 

to move. 

The code is based on the QuickTime 3.0 APIs. Please note that 

all QuickTime atom data must be in big-endian format. The code 

makes use of the QuickTime 3.0 endian format conversion routines 

contained in the interface file Endian.h to do any required 

translations.

Note also the code contains very limited error checking. 

It's up to you to add the appropriate error-handling routines.

QT3DTween can be compiled and run under the MacOS and under Windows. 

The main tweening code is found in the file QT3DTween.c. 

The remaining files in this folder are part of the general 

Mac and Windows support code.

USING QT3DTween

Launch the application and select either "Use Camera Tweening" 

or "Use Rotation Tweening" (or both) from the Test menu. 

Then select the menu item "Create 3D Tween Movie". 

A window will appear asking you to select a 3DMF file 

(a sample 3DMF file is included, but you can choose any 3DMF file). 

Once a 3DMF file is selected, the selection window will go away; 

you'll then be asked to select a destination for the new movie. 

Open the newly created movie and play the movie.

Enjoy,

QuickTime Team