Planning Animation 3


13 separate small files (displayed above)
(sizes 158 bytes --> 239 bytes) total size 13 files = 2744 bytes

Bits & Pieces

Suppose we took each of the original frames (Example C Planning Animations 1), and chopped out the excess background area. There are 13 small images as shown ABOVE. They range in size from 158 bytes to 239 bytes.

Example A shows the best result from the previous page, where a background was combined with the whole (but transparent) frames from the earlier example. Notice it is 7,468 bytes, about 20,000 bytes smaller than the flipbook model.

Use the background frame figure (1) from example A, and place each of the small individual frames (top of page or figure(2)) on top of this background. Make BLACK the transparent color, OFFSET each small frame from within the animation package (supported by 89a format), and finally use the correct disposal mechanism. The result is shown in example B. Notice, the size is now 4,264 bytes, a 3,204 byte savings over example A. This represents an additional 45% savings over A.



Best from previous page
(A.) One background
14 frames
- 7468 bytes


(1) Background image
1 frame
- 2776 bytes

---> ---> --->

(2) 13 small pix
13 frames (using offset)
total 2744 bytes


(B.) combining 1 & 2
14 frames
total 4264 bytes

The top and bottom example will not look correct from within NetScape due to the disposal method used. They will look very similar, just not as intended.

Review (animations with backgrounds):

Flip book 13 frames - 28,948 bytes

Background + 13 full frames -- overlay - 7,468 bytes

Background + 13 small frames -- (offset) - 4,264 bytes

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