Re: A [partial] alternative to animated GIf ( was UNISYS latest licence nonsense)
On Tue, Aug 31, 1999 at 10:46:33AM +0200, goswin.brederlow@student.uni-tuebingen.de wrote:
> Thierry LARONDE <thierry.laronde@polynum.com> writes:
>
> > Hello,
> >
> > There is the possibility to do animations - yes, in black and white - without
> > the GIF format, and with saving download time.
> > The technique consists of programming in JavaScript ( the whole images are
> > generated within the source - that's the gain) and using the old xbm format.
> > With some tricks, this works with both IE and Navigator supporting JavaScript
> > 1.1 ( i.e. compatible Mozilla/3.0 at least).
>
> You can easily make an animation using multiple images combined with a
> javascript. No need to put them into the source. You can even mix png,
> jpg,... in one animation. Just be sure you use correct timings to
> delay the anim on fast maschines.
>
Of course, but what I mean is that you can do animations from a *single* file : there is no need to send a ton of requests.
The technique is also useful, for example when you want to put buttons for the navigation : if you want to simulate the ON, and CLICK events, you need to download different images. This is very slow. Here, you can create, in a *unique* and *small* file basic images that are good enough.
I'm writing a small JavaScript "library" with functions to rotate, mirror, negativize or buttonize a single image described in an ascii format ( with "RLE" basic compression).
In order for the people interested in this, I will translate the explanations ( my english is not great, but obviously more easy to understand for a lot of people than the single french version).
Best regs.
--
Thierry LARONDE
thierry.laronde@polynum.com
website : http://www.polynum.com
"unctuous : used about somebody who pretends to put balm on your wounds, when,
at the very time, by way of preliminaries, he's just oiling your arse."
Adrien Herryolt, "Le glossaire des Précieuses"
Reply to: