Dean,
I’ve not done much tweening, but the little amount that I have still suggests that your latter question is the answer…you will need to draw at least some of the intermediate frames if you want anything close to a realistic appearance. After all, how would tweening know what area of the image to manipulate and in what direction? I know tweening has options that control more than just opacities, but I still tend to think of it primarily as a technique for fading out one image and the next subsequent image is faded in.
Regards,
Daryl
You can get a nice tween of a door opening in Flash by shape-tween transforming a rectangle shape into a trapezoid(?) of a nearly wide open door. However, I can’t remember IR well enough to know if that kind of transformation is allowed.
I do know that in Flash the file will be 50 times smaller, because even if you don’t have to draw each frame individually, the GIF makes bitmaps of each frame. In Flash only one door is drawn, as a vector, and then the shape is manipulated mathematically, making a much smaller file.
